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Sample records for surgery cohort study

  1. Case-Cohort Studies: Design and Applicability to Hand Surgery.

    Science.gov (United States)

    Vojvodic, Miliana; Shafarenko, Mark; McCabe, Steven J

    2018-04-24

    Observational studies are common research strategies in hand surgery. The case-cohort design offers an efficient and resource-friendly method for risk assessment and outcomes analysis. Case-cohorts remain underrepresented in upper extremity research despite several practical and economic advantages over case-control studies. This report outlines the purpose, utility, and structure of the case-cohort design and offers a sample research question to demonstrate its value to risk estimation for adverse surgical outcomes. The application of well-designed case-cohort studies is advocated in an effort to improve the quality and quantity of observational research evidence in hand and upper extremity surgery. Copyright © 2018 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.

  2. Mortality after surgery in Europe: a 7 day cohort study

    NARCIS (Netherlands)

    Pearse, Rupert M.; Moreno, Rui P.; Bauer, Peter; Pelosi, Paolo; Metnitz, Philipp; Spies, Claudia; Vallet, Benoit; Vincent, Jean-Louis; Hoeft, Andreas; Rhodes, Andrew; Moreno, Rui; Pearse, Rupert; Damster, Sandrine; Golder, Kim; Hewson, Russell; Januszewska, Marta; Leva, Brigitte; Ramos, Vasco; Hoste, Eric; Huyghens, Luc; Jacobs, Rita; van Mossevelde, Veerle; Opdenacker, Godelieve; Poelaert, Jan; Spapen, Herbert; Leleu, Kris; Rijckaert, Dirk; de Decker, Koen; Foubert, Luc; de Neve, Nikolaas; Biston, Patrick; Piagnerelli, Michael; Collin, Vincent; Blauwen, Nadia den; Clauwaert, Charlotte; de Crop, Luc; Verbeke, An; Roeselare, Heilige Hartziekenhuis; Derumeaux, Pieter; Gardin, Christophe; Kindt, Sebastiaan; Louage, Sofie; Verhamme, Bruno; Druwé, Patrick; Lahaye, Ingrid; Rosseel, Francis; Rutsaert, Robert; Vanlinthout, Luc; de Kock, Marc; Forget, Patrice; Georges, Pascal; Grosu, Irina; Kahn, David; Lois, Fernande; Momeni, Mona; Pospiech, Audrey; Yemnga, Bernadette; Jadoul, Jean-Luc; Malbrain, Manu; Bosinceanu, Dana; Collard, Edith; Jorens, Philippe; Reyntiens, Dirk; Smitz, Carine; Vercauteren, Marcel; Fagnoul, David; van Obbergh, Luc; Goranović, Tatjana; Mazul-Sunko, Branka; Toplice, Krapinske; Oremuš, Krešimir; Bešlić, Gabrijela; Duzel, Viktor; Hauptman, Ada; Peremin, Sanja; Šribar, Andrej; Župčić, Miroslav; Brod, Slavonski; Mirković, Ivan; Bauer, Zlata Šarić; Belavić, Matija; Blažanin, Božidar; Katušin, Mirjana Lončarić; Krijan, Antonija Brozović; Mišković, Petar; Šimić-Korać, Nataša; Topić, Jasna; Žilić, Antonio; Žuni, Josip; Acan, Ivana; Adanić, Mirta; Ivanov, Nikola; Šarić, Jadranka Pavičić; Tomulić, Katarina; Visković, Nataša; Bošnjak, Silvana; Drenjančevic, Ivana Haršanji; Kristek, Gordana; Kvolik, Slavica; Markić, Stela; Rakipovic, Andreja Stojanovic; Tot, Ozana Katarina; Venzera- Azenic, Darija; Fabris, Lada Kalagac; Bačak-Kocman, Iva; Balenović, Igor; Bandić, Daniela; Deutsch, Patricia Adrianne Judith; Divjak, Loredana; Filipović, Ina Grčić; Gužvinec, Zvonka; Krznarić, Zrinka; Lončarić, Yvonne; Magaš, Jelena Vadlja; Mitrović, Marek; Okić, Marija; Pavlek, Mario; Ramov, Elza; Rezek, Karolina; Sekulić, Ante; Tomasevic, Boris; Mirić, Mirjana; Tomašević, Anita; Mahečić, Tina Tomić; Vrbanović, Vilena; Bobinac, Mirna; Božić, Alfred; Debelic, Danijela; Frkovic, Vedran; Batinica, Inga Mladić; Baranović, Senka; Gavranović, Željka; Kikec, Mirna; Maldini, Branka; Marić, Stela; Agnić, Ivan; Delić, Nikola; Dropulić, Nataša; Gašpić, Toni Kljaković; Ilić, Darko; Ivančev, Božena; Karanović, Nenad; Kuščević, Dorjan; Marović, Zlatko; Milić, Matija; Nevešćanin, Ana; Petković, Tatjana; Smoje, Mario; Brozović, Gordana; Jelisavac, Milana; Matolić, Martina; Oberhofer, Dagmar; Pavičić, Ana Marija; Šakić, Kata; Bozovic, Margarita Delija; Krecek, Zvjezdana Kotorac; Krobot, Renata; Andabaka, Tatjana; Bratanić, Mislav; Dzepina, Orjana; Kraljev, Martina; Šeric, Julija; Šimurina, Tatjana; Grujić, Rosa; Nacevski-Bulaja, Biljana; Barižon, Mirna; Danira, Vrančić; Dražen, Bulaja; Dušanka, Kimer; Halužan, Marijana Bašić; Joško, Žaja; Katica, Roca; Labor, Magda; Marinković, Tea Grgurević; Mihovilčević, Danči; Marija, Bego; Srečko, Marinković; Vranković, Srđan; Kyprianou, Theodoros; Neophytou, Kyriakos; Cerny, Vladimir; Cvachovec, Karel; Belikova, Barbora; Drab, Michal; Hudacek, Kamil; Krikava, Ivo; Stourac, Petr; Zadrazilova, Katarina; Bicek, Vladimír; Brabcová, Milena; Klozová, Radka; Vajter, Jaromír; Vymazal, Tomáš; Toft, Palle; Blichfeldt, Louise; Hansen, Bo Dilling; Moller, Kirsten; Nielsen, Jeppe Sylvest; Frederiksen, Joachim; Andersen, Johnny Dohn; Kühne, Jan Peter; Leivdal, Siv; Stendell, Line; Simonsen, Martin; Zoltowski, Marcin Konrad; Ali, Zahida Salman; Freundlich, Morten; Pilypaite, Jurgita; Clausen, Nicola Groes; Thorup, Line; Hansen, Frank; Bestle, Morten; Hansen, Christian Steen; Afshari, Arash; Bille, Anders Bastholm; Lefort, Michele; Secher, Erik L.; Liboriussen, Lisbeth; Herodes, Veiko; Härma, Eve; Marvet, Kadri; Pool, Kristiina; Kallas, Pille; Mägi, Triinu-Kreete; Sütt, Jaan; Vijar, Kerli; Visk, Evelin; Vinnal, Mare; Ellermaa, Jaanus; Liibusk, Liia; Tikkerberi, Artur; Falk, Ilme; Mällo, Esta; Talving, Jaak; Pettilä, Ville; Hovilehto, Seppo; Kirsi, Anne; Mustola, Seppo; Tiainen, Pekka; Toivonen, Juhani; Dabnell, Sandra; Kaminski, Tadeusz; Sysimetsa, Anu; Kaukonen, Maija; Silvasti, Päivi; Vainio, Kaisa; Lund, Vesa; Sjövall, Sari; Saarinen, Kari; Viitanen, Matti; Ahonen, Tommi; Alaspää, Ari; Zittling, Ritva; Saarinen, Aarne; Moisander, Annette; Wagner, Bodo; Laru-Sompa, Raili; Elomaa, Esa; Lavonen, Leena; Nevantaus, Juha; Geier, Klaus; Kavasmaa, Tomi; Koorits, Ursula; Kubjas, Mare; Lauritsalo, Seppo; Ottelin, Lauri; Palve, Markki; Pynnönen, Jari; Rääbis, Inga; Saarelainen, Minna; Heikkilä, Tapani; Kontula, Timo; Lehtimäki, Markku; Liimatainen, Jari; Moilanen-Oikarinen, Mari; Pakarinen, Marika; Palanne, Riku; Seppänen, Hanna; Pulkkinen, Anni; Vääräniemi, Heikki; Paananen, Sami; Koskenkari, Juha; Sälkiö, Sinikka; Vakkala, Merja; Koskue, Talvikki; Loisa, Pekka; Laitio, Ruut; Hautamäki, Raku; Koivisto, Simo-Pekka; Futier, Emmanuel; Lefrant, Jean-Yves; Leon, Alain; Bonnet, Francis; Marret, Emmanuel; Spielvogel, Catherine; Papageorgiou, Chryssa; Szymkiewicz, Olga; Tounou-Akue, Felix; Aubrun, Frederic; Bonnet, Aurélie; Gazon, Mathieu; Guiraud, Michel; Laurent, Virginie; Béclère, Antoine; Tachon, Guillaume; Demars, Nadège; Dumenil, Anne-Sylvie; Mercier, Frederic; Landais, Alain; Mentec, Herve; Bazin, Marie; Gonnu, Sophie; Petit, Antoine; Albaladejo, Pierre; Almeras, Luc; Bataillard, Amélie; Rossi-Blancher, Marine; Lefrant, Jean Yves; Barthel, Florian; Hallel, Dan; Sbai, Hicham; Khalifeh, Pamela; Lidzborski, Lionel; Jully, Marion; Platon, Ecaterina; Pottecher, Julien; Baumgarten, Romain; Schultz, Christel; ElMiloudi, Fayçal; Lefebvre, Julie; Waton, Karen; Sprunck, Adrien; Steib, Annick; Thibaud, Adrien; Thuet, Vincent; Kieffer, Vianney; Dubois-Vallaud, Delphine; Jacob, Laurent; Becanne, Xavier; Cherfaoui, Salim; Gauzit, Remy; Godier, Anne; Lakhdari, Mourad; Samma, Charles; Bigeon, Jean-Yves; Burtin, Philippe; Halchini, Constantin; Lacroix, Magali; Pinna, Frederic; Barbes, Aurélie; Just, Bernard; Mateu, Philippe; Benayoun, Laurent; Berger, Philippe; Granier, Nathalie; Perrigault, Pierre Francois; Libert, Nicolas; de Rudnicki, Stephan; Merat, Stéphane; Bourdet, Benoit; Ferré, Fabrice; Minville, Vincent; Piriou, Vincent; Rague, Philippe; Wallet, Florent; Lebuffe, Gilles; Desbordes, Jacques; Robin, Emmanuel; Ichai, Carole; Orban, Jean-Christophe; Marx, Gernot; Sander, Michael; Gottschalk, André; Piontek, André; Unterberg, Matthias; Hilpert, Justus; Kees, Martin; Triltsch, Andreas; Wiegand-Löhnert, Carola; Glöckner, Christiane; Hohn, Andreas; Rose, Elmar; Schröder, Stefan; Wiese, Oliver; Awlakpui, Eli; Scheidemann, Mona; Wittmann, Maria; Ramminger, Axel; Dresden, Carus; Gama de Abreu, Marcelo; Heller, Axel; Marx, Christine; Neidel, Julia; Goldmann, Anton; von Heymann, Christian; Laetsch, Beatrix; Maahs, Esther; Scholz, Lars; Frenzel, Dirk; Massarat, Kyros; Lenhart, Franz-Peter; Reichle, Florian; Rudlof, Kristina; Borchers, Friedrich; Buettner, Christoph; Schmutzler, Martin; Burgard, Gerald; Lucht, Alexander; Wagner, Jan; Pilge, Stefanie; Schneider, Gerhard; Untergehrer, Gisela; Bis, Beata; Krassler, Jens; Dittmann, Jan; Haberkorn, Jörg; Eberitsch, Jürgen; Eberitsch, Karola; Nippraschk, Thomas; Wepler, Ulrich; Engelen, Wolf-Christian; Nau, Carla; Scholler, Axel; Schüttler, Jürgen; Wintzheimer, Simone; Bloos, Frank; Braune, Anke; Fergen, Daniela; Ludewig, Katrin; Paxian, Markus; Reinhart, Konrad; Graf, Nikolaus; Schwarzkopf, Konrad; Berger, Katharina; Habicher, Marit; Kasperiunaite, Ruta; Savelsberg, Sabine; Krep, Henning; Reindl, Michael; Weber, Matthias; Bauer, Wolfgang; Bingold, Florian; Christ, Saskia; Friederich, Patrick; Kaviani, Reza; Auer, Patrick; Bonnländer, Georg; Drescher, Jürgen; Braun, Roland; Eichenauer, Tim; Kerner, John; Bierbaum, Kathrin; Brünner, Horst; Grond, Stefan; Perez-Platz, Ursula; Andresen, Bent; Linstedt, Ulf; Stegmann, Nils; Erkens, Uwe; Kopcke, Jens; Meyer, Andreas; Brestrich, Hartmut; Ernst, Sandra; Merkel, Stella; Krieger, Lena; Luers, Frank; Weyland, Andreas; Noeldge-Schomburg, Gabriele; Menckie, Thomas; Wasmund, Christina; Bredtmann, Ralph-Dieter; Erler, Ines; Raufhake, Carsten; Haumann, Christine; Möllemann, Angela; Oehmichen, Uwe; Sergejewa, Olga; Lehning, Brigitte; Czeslick, Elke; Geyer, Michaela; Malcharek, Michael; Sablotzki, Armin; Stier, Marina; Feld, Florian; Rossaint, Rolf; Simon, Verena; Armaganidis, Apostolos; Koulenti, Despoina; Kotanidou, Anastasia; Nanas, Serafim; Papastylianou, Androula; Psevdi, Aikaterini; Stathopoulos, Anastasios; Voulas, Asklepieion; Kanna, Efthymia; Koutsikou, Anastasia; Moustaka, Alexandra; Chovas, Achilleas; Komnos, Apostolos; Zafiridis, Tilemachos; Franses, Josef; Lavrentieva, Athena; Koraki, Eleni; Katsenos, Chrysostomos; Kasianidou, Maria Flora; Nasopoulou, Pantelia; Spyropoulou, Eleni; Gousia, Chrysoula; Katsanoulas, Constantine; Lathyris, Dimitrios; Kyriazopoulos, George; Sfyras, Dimitrios; Tsirogianni, Athanasia; Kostopanagiotou, Georgia; Lignos, Mihail; Matsota, Paraskevi; Christopoulos, Christos; Mouratidou, Alexandra; Vrettou, Efstratia; Boufidis, Spyros; Moka, Eleni; Arnaoutoglou, Eleni; Koulouras, Vasileios; Nakos, George; Papathanakos, Georgios; Anthopoulos, Georgios; Choutas, Georgios; Karapanos, Dimitrios; Tzani, Vaso; Gkiokas, Georgios; Nastos, Konstantinos; Nikolakopoulos, Fotios; Dragoumanis, Christos; Nikitidis, Nikos; Pneumatikos, Ioannis; Theodorou, Vassiliki; Zacharouli, Danai; Kandi, Stella; Tasopoulos, Konstantinos; Arvaniti, Kostoula; Matamis, Dimitrios; Mplougoura, Eva; Petropoulou, Polixeni; Soumpasis, Ioannis; Amaniti, Ekaterini; Giannakou-Peftoulidou, Maria; Gkeka, Eleni; Soultati, Ioanna; Kokinou, Maria; Papatheodorou, Lambrini; Stafylaraki, Maria; Giasnetsova, Tatiana; Gritsi-Gerogianni, Nikoleta; Kydona, Christina; Kiskira, Olga; Koulentis, Ioannis; Apsokardos, Alexandros; Dimitropoulos, Konstantinos; Soldatou, Ourania; Nathanail, Christodoulos; Papazotos, Alexios; Tsakas, Pirros; Clouva-Molyvdas, Phyllis-Maria; Kolotoura, Athina; Sartzi, Monika; Papanikolaou, Spiros; Polakis, Pavlos; Karatzas, Stylianos; Kyparissi, Aikaterini; Papavasilopoulou, Theonymfi; Koukoubani, Triantafillia; Mastora, Evangelia; Spyropoulou-Pagdatoglou, Kyriaki; Nyktari, Vasileia; Malliotakis, Polychronis; Papaioannou, Alexandra; Bekos, Vasileios; Maragkou, Elisavet; Spring, Anna; Evagelatos, Stavros; Ioakeimidou, Aikaterini; Noulas, Nikos; Molnár, Zsolt; Csüllög, Emese; Elekes, Enikő; Molnár, Tamás; Katona, Zsuzsana; Kremer, Ildiko; Miko, Angela; Csomos, Akos; Galambos, Zsuzsanna; Szucs, Akos; Nyikos, Gyorgy; Szekeres, Gabor; Szabo, Ervin; Kranitz, Katalin; Simon, Melinda; Szigeti, Janos; Gaál, Emánuel; Havas, Attila; Ille, Alexandru; Bráz, Krisztina; Nagy, Geza; Sigurdsson, Gisli; Sigurbjörnsson, Fridrik T.; Sigurdsson, Gisli H.; Kárason, Sigurbergur; Sigurdardottir, Elin Edda; Blöndal, Ásbjörn; Gunnarsson, Björn; Westbrook, Andrew; Broderick, Alan; Hafeez, Parvaiz; Hanumanthaiah, Deepak; Brohan, Janette; O'Chroinin, Donal; Bailey, Kevin; Ramamoorthy, Karthik; Doyle, Yvonne; Freir, Noelle; O'Rourke, James; Jonson, Philip; Saeed, Sabir; Hayes, Ivan; Loughrey, John; Frohlich, Stephen; McCauley, Nuala; Ryan, Donal; Fitzpatrick, Gerry; Kevin, Leo; Thomas, Jubil; Warde, Barry; Woolhead, Alan; Duggan, Michelle; Egan, Cara; Crowley, Seamus; Lebese, Soloman; Bergin, Anne; Page, Rory; Collins, Daniel; McKenny, Michael; Della Rocca, Giorgio; Grasso, Salvatore; Bresciani, Anna; Carmino, Livio; Ghelfi, Silvia; Lorenzelli, Laura; Novelli, Maria Teresa; Pescarmona, Chiara; Roasio, Agostino; Gatta, Alessandro; Nastasi, Mauro; Sanseverino, Manlio; Tinti, Carla; Bianchin, Andrea; Tormena, Maria; Franco, Antonio; Marini, Federica; Di Mauro, Piero; Rapido, Francesca; Tommasino, Concezione; Bellotti, Ferdinando; Boninsegna, Daniele; Castellani, Gianluca; Sances, Daniele; Spano, Gianluca; Tredici, Stefano; Vezzoli, Dario; Fucecchio, Igneo; Bacci, Alessandro; Coppini, Roberta; Dell'unto, Sandro; Mori, Emanuele; Stanzani, Maria Rosa; Tosi, Monica; Collareta, Michele; Forfori, Francesco; Franchi, Matteo; Mancino, Giuseppe; Battistella, Massimo; Baricocchi, Elisa; Bona, Francesco; Debernardi, Felicino; Giacoletto, Gianmarco; Iacobellis, Antonio; Massucco, Paolo; Moselli, Nora; Muratore, Andrea; Palomba, Graziella; Sardo, Elena; de Simone, Michele; Suita, Luisa; Zocca, Edoardo; Bucci, Barbara; Della Corte, Francesco; Piciucco, Tiziana; Viarengo, Valeria; Bettelli, Gabriella; Cantarini, Eugenia; Giampieri, Marina; Tanfani, Alessandra; Recchia, Eugenio; Milano, S. Raffaele; Bignami, Elena; Bruno, Giovanna; Costagliola, Roberto; Gandolfi, Azzurra; Greco, Massimiliano; Lembo, Rosalba; Monti, Giacomo; Nicelli, Elisa; Pasculli, Nicola; Turi, Stefano; Baroselli, Antonio; Brazzoni, Marcella; Buttazzoni, Mattia; Buttera, Stefania; Centonze, Carlo; Serena, Giovanni; Spagnesi, Lorenzo; Toretti, Ilaria; Vilardi, Anna; Zearo, Ester; Arpino, Ines; Baraldi, Sara; Guarnerio, Chiara; Molene, Vincenzo; Monea, Maria Concetta; Vaccarisi, Enrico; Vicari, Luigi; Albante, Alida; Aversano, Marco; Loiacono, Cinzia; Marandola, Maurizio; Fusari, Maurizio; Petrucci, Nicola; Galla, Amerigo; Mascia, Antonio; Primieri, Paolo; Di Noto, Anna; Gratarola, Angelo; Molin, Alessandro; Spagnolo, Luigi; Spena, Claudio; Calligaro, Plinio; Marchiotto, Simonetta; Merlini, Alberto; Pedrazzoli, Eleonora; Perina, Giulia; Visentin, Renea; Fumagalli, Roberto; Garbagnati, Andrea; Manetti, Bruna; Snaier, Chiara; Somaini, Marta; Farnia, Antonio; Nani, Roberto; Pierantonio, Novello; de Michele, Michele; Gazzanelli, Sergio; Pugliese, Francesco; Ruberto, Franco; Anna, Universitaria S.; Bergamini, Elena; Tassinati, Tania; Capuzzo, Maurizia; Cirillo, Vera; Tufano, Rosalba; Oggioni, Roberto; Parrini, Vieri; Brunori, Emanuela; Capone, Micaela; Carbone, Luigi; Corradetti, Francesco; Elisei, Daniele; Fiorentino, Stefano; Francesconi, Maurizio; Gattari, Diego; Gorgoglione, Maria; Lacobone, Emanuele; Minnucci, Francesco; Montironi, Claudio; Riccioni, Gianrenato; Tappata, Giuseppe; Zompanti, Valeria; Verdenelli, Paola; Cerutti, Elisabetta; Ranieri, Vito Marco; Golubovska, Iveta; Grigorjevs, Sergejs; Rikmane, Maija; Rozkalne, Daina; Stepanovs, Jevgenijs; Suba, Olegs; Kazune, Sigita; Miscuk, Aleksej; Nemme, Janis; Oss, Peteris; Sipylaite, Jurate; Macas, Andrius; Ragaisis, Vytautas; Kontrimaviciute, Egle; Tomkute, Gabija; Boerma, Christiaan; Kramer, Irene Fleur; Poeze, Martijn; Ziekenhuis, Antonius; Maria, John; Pelzer, Gerardus; Winsser, Lex; Nijsten, Maarten; Schoorl, Michiel; Spanjersberg, Rob; Buhre, Wolfgang; Dieleman, Stefan; van Klei, Wilton; Bouw, Martijn; Pickkers, Peter; van der A, Marieke; Schreiner, Frodo; Zandvliet, Ria; van den Berg, Roy; de Wit, Esther; Keijzer, Christaan; Hollmann, Markus; Preckel, Benedikt; van Acker, Gijs; Dennesen, Paul; Veld, Bas; Kuijpers-Visser, Agnes; Inan, T.; Koopman-van Gemert, A.; Ponssen, Huibert; Brouwer, Tammo; Koopmans, Matty; van Bommel, Jasper; van Duijn, Ditty; van der Hoven, Ben; Ormskerk, Patricia; Beck, Oliver; Schiere, Sjouke; Reidinga, Auke; Venema, Allart; Hoogendoorn, Marga; Olthof, Kees; Flaatten, Hans; Jammer, Ib; Dokka, Vegard; Monsen, Svein Arne; Ytrebo, Lars Marius; Noursadeghi, Mostafa; Shahzad, Ahmed; Boksasp, Ola Dagfinn; Roiss, Christoph; Strietzel, Hans Frank; Gina, Anne; Berntsen, Schie; Haugland, Helge; Vingsnes, Svein Ove; Axelsson, Patric; Olsen, Thomas; Katre, Sanjay; Aakeroey, Kristin; Mikstacki, Adam; Tamowicz, Barbara; Bożiłow, Dominika; Goch, Robert; Grabowski, Piotr; Kupisiak, Jacek; Małłek, Małgorzata; Szyca, Robert; Kostyrka, Włodzimierz; Choma, Robert; Jankowski, Grzegorz; Kościelniak, Władysław; Pietraszek, Paweł; Szarowar, Bartosz; Matos, Ricardo; França, Carlos; Lacerda, António Pais; Ormonde, Lucindo; Rosa, Rosário; Pereira, Inês; Vitor, Paula; Bento, Henrique Completo; Lopes, Maria Raquel; Carvalho, Marques; Faria, Manuela; de Sousa, Ana Cláudia; de Freitas, Pereira; Almeida, Eduardo; Mealha, Rui; Vicente, Rachel; Monte, Raquel; Rua, Fernando; Barros, Nelson; Esteves, Francisco; Gouveia Pinheiro, Célia Maria; Real, Vila; Oliveira, Vítor Miguel; Oliveira, Maria Fátima; Martins, Isabel; Saraiva, José Pedro; Assunção, José Pedro; Bártolo, Anabela; Carvalho, Anabela; Correia, Carlos; Martins, Salomé; Milheiro, Ruth; Diaz, Alejandro; Gonçalves, Maria Imelda; Ribeiro, Rosa; Estilita, Joana; Glória, Carlos; de Almeida, José; Barros, Filipa; Ramos, Armindo; Camara, Margarida; Maul, Edward Richard; Nobrega, Julio; Langner, Anuscka; Maia, Dionísio; Afonso, Ofélia; Faria, Filomena; Serra, Sofia; Botelho, Maria Manuela; Ferreira, Pedro; Mourão, Luís; Oliveira, Ana Vintém; Resende, Margarida; Aleman, Miguel; Fonseca, Jorge; Isidoro, Marta; de Meneses, Helena; Pêgas, António; Pereira, José; Pereira, Luis; Ramos, Bárbara; Matos, Francisco; Castro, Maria de Lurdes Gonçalves; Martins, Ana; Ramos, Cristina; de Sousa, Manuel; Bento, Luís; Botas, Conceição; Lopes, Vitor; Mendes, Rosa; Grigoras, Ioana; Blaj, Mihaela; Damian, Mihaela; Lupusoru, Andreea; Ristescu, Irina; Codreanu, Monica; Diaconescu, Ciresica; Nistor, Alina; Stelian, Dorin Stanescu; Streanga, Livia; Berneanu, Maria; Bordeianu, Cristina; Florenta, Calarasu; Iacob, Alina; Lupu, Mary Nicoleta; Mocanu, Iulian; Moraru, Coca; Meran, Carleta; Nicolae, Bacalbasa; Sandu, Madalina; Turcanu, Roxana; Epure, Florina; Grigore, Monica; Hotaranu, Cristina; Popescu, Nicoleta; Baban, Oleg; Baciu, Manuela; Ciobanu, Aurica; Denciu, Catalin Ioan; Gurau, Vitalie; Maftei, Ion; Moldovan, Ion; Ungureanu, Liviu; Bogdan, Prodan; Corneci, Dan; Dinu, Melania; Madalina, Dutu; Rely, Manolescu; Silvius, Negoita; Tomescu, Dana; Gabriela, Droc; Dinescu, Stelian Adrian; Calin, Mitre; Ionescu, Daniela; Margarit, Simona; Vasian, Horatiu; Albu, Corina; Balasa, Carmen; Cadrigati, Alina; Dragulescu, Dorian; Gavra, Loredana; Hentia, Ciprian; Macarie, Claudiu; Manescu, Mihaela; Nediglea, Ioan; Ocica, Dana; Ovidiu, Bedreag; Papurica, Marius; Plavat, Cosmin; Popa, Claudia; Ramneantu, Mihaela; Sandesc, Dorel; Sandici, Zoran; Sarandan, Mihaela; Belciu, Ioana; Tincu, Eugen; Ursu, Irina; Aignatoaie, Mariana; Huzuneanu, Mariana; Cocu, Simona; Hagau, Natalia; Ciubotaru, Roxana; Copotoiu, Sanda-Maria; Copotoiu, Ruxandra; Ioana, Ghitescu; Kovacs, Judit; Leonard, Azamfirei; Szederjesi, Ianos; Genoveva, Vanvu; Mosnegutu, Simona; Surbatovic, Maja; Djordjevic, Dragan; Djordjevic, Biljana; Grujic, Krasimirka; Jovanovic, Dusko; Krstic-Lecic, Ivana; Obradovic, Jovana; Zeba, Snjezana; Jevdjic, Jasna; Miletic, Milos; Zunic, Filip; Bulasevic, Aleksandra; Brko, Radoslava; Gazibegovic, Narcisa; Kendrisic, Mirjana; Vojinovic, Radisa; Firment, Jozef; Zahorec, Roman; Capková, Judita; Grochova, Monika; Trenkler, Stefan; Griger, Martin; Bakosova, Erika; Kvasnica, Martin; Saniova, Beata; Sulaj, Miroslav; Zacharovska, Andrea; Simkova, Alexandra; Číková, Andrea; Gebhardtova, Andrea; Hanuljaková, Slávka; Koutun, Juraj; Martonová, Andrea; Žilinčárová, Veronika; Galkova, Katarína; Krbila, Stefan; Sobona, Viliam; Ocenasova, Marieta; Novak-Jankovic, Vesna; Stecher, Adela; Stivan, Feri; Grynyuk, Andriy; Damjanovska, Marija; Kostadinov, Ivan; Knezevic, Mile; Malivojevic, Marko; Borovsak, Zvonko; Kamenik, Mirt; Mekiš, Dušan; Osojnik, Irena; Kosec, Lučka; Kapš, Silva Ostojič; Aleksic, Dragoslav; Gerjevič, Božena; Kalan, Katja; Ursic, Tomaz; Aldecoa, Cesar; González, Juan Montejo; Artigas, Anna; Garcia, Andres; Lisi, Alberto; Perez, Isabel; Perez, Gisela; Poch, Nuria; Vaquer, Sergi; Balciscueta, Goiatz; Barrasa, Helena; Cabanes, Sara; Maynar, Javier; Poveda, Yolanda; Rodero, Amaia Quintano; Vallejo, Ana; Duque, Patricia; Garcia-Bunger, Beatriz; Elvira, Maria Adoracion; Lajara, Ana María; Palencia, María; Ramos, Rafael; Fernandez, Ana Saez; León, Juan Tirapu; López, Jaione Iza; Murillo, Francisco Yoldi; Ramirez, Eva Turumbay; Rico, Patricia Unzué; Patricia, Marta; Vizcaíno, Martín; Bernat Álvarez, Maria José; Real, Kenneth Planas; Serra, Arantxa Mas; Aracil, Norma; Bodega, Begoña Menendez; García, Raquel Fernández; García, Marivi Álvarez; Gordon, Borja de la Quintana; Jodrá, Alicia Gutiérrez; López, Angela De Santos; Ros, Juan José Llavador; Soto, Rocío Ayala; Sepúlveda, Isabel; Díez, Esperanza Pascual; Fernández, Luisa Fernández; Gulina, Carlos Soria; Arviza, Laura Pérez; Fernandez, Lorena Mouriz; Gómez, Antía Río; Martínez, Concepción Alonso; Rodríguez, Ana Belén Rodríguez; Soto, Carmen Lopez; Garcia, Clara; Lorenzo, Mario; Pinilla, Elena; Rico, Jesus; Ruperez, Irene; Alonso, Eduardo; Leira, Fernando; Maseda, David Pestaña Emilio; Royo, Concepcion; Villagran, Jose; Candi, Giralt Murillo; Esteva, Garcia Eduardo; Folgado, Raquel Mansilla; Fornaguera, Nadal Joan; Montse, Pijoan Calonge; Prat, Anna Sape; Sintes, Dolores; Arteta, Donaldo Arteta; Delgado, Horacio García; López-Cuervo, Juan Fajardo; López, Mikel Celaya; Ramírez, Alejandro; Saldaña, Francisco José; Aliste, Pilar; Anchuelo, Ana Hermira; Campos, Ascensión García; Catalán, Mercedes; Gómez, Mónica García; Gonzalaez, Olga Gonzalez; López, Eloísa López; Navacerrada, Isabel Real; de Quevedo, Sara Arlanzón; Serrano, Matilde Gonzalez; Silvestre, Francisco Perez-Cerdá; Torrente, Francisco Martinez; Arocas, Blanca; Martinez, Ernesto Pastor; Soro, Marina; Maroto, Fernando; Algarra, Ruth Robledo; Aleixandre, Inés Silla; Argente, Gemma Rodriguez; Lleó, Ana Broseta; Rubio, Antonio Vela; Sánchez, José Luis Vicente; Valcárcel, Irene Enríquez; Balust, Clara; Balust, Jaume; Borrat, Xavier; Carretero, Maria Jose; Gracia, Isabel; Matute, Purificacion; Mercadal, Jordi; Pujol, Roger; Tena, Beatriz; Ubre, Marta; Albalad, Dolores Dorda; Alcaide, Concepción Muñoz; Caballero, Jesus; Cervantes, Angels Camps; Clanchet, Miriam de Nadal; Estruch, Nuria Montferrer; Ferrer, Mercè Ballvé; Fornells, Albert Lacasta; Galera, Eduard Terrer; Martinez, Irene Garcia; Muñoz, Susana Manrique; Pelavski, Andres; Perez, Pilar Tormos; Posada, Miguel Angel Gonzalez; de Prat, Ivette Chocron; Rello, Jordi; Serrano, Llum García; Sieiro, José Manuel Naya; Silva, Lorena; Sole, Maria Jose Colomina; Suñé, Alfons Biarnes; Villach, Isabel Rochera; Herreras, José Ignacio Gómez; Poves, Rodrigo; Rafael, Beatriz Martinez; Almeida, Icier Martinez; Collates, Angel Fernandez; Bartolomé, Maria Jose; Cimadevilla, Bonifacio; González, Antonio Manuel González; Llevot, Jose Manuel Rabanal; Mira, Juan Carlos Diaz de Terán; Molina, Begoña González; Pardo, Sara; Sánchez, Carlos López; Williams, Monica; Zaldibar, Estibaliz; Corsini, Lourdes Muñoz; Fraile, José Ramón Rodríguez; de la Lastra, Maria; Sacramento, Monir Kabiri; Saña, Francisco Javier López; Ålvarez, Josep Trenado; Bulnes, Maria Luisa Cantón; Carrasco, Violeta Gándara; Crespo, María del Rocío Míguez; Cubillos, Diana Narváez; Laza, Enrique Laza; Pérez, María del Pino Heredia; Seisdedos, Ángel Arenzana; Torres, Bartolomé Fernández; Ampuero, Marian Santos; Llano, Marta Chicot; Mata, Esperanza; Munoz, Manuel; Orts, Mar; Planas, Antonio; Ramasco, Fernando; Roman, Carlos; Durán, Marina Varela; Fernandez, Sabela del Río; Otero, Yolanda Sanduende; Pineiro, Susana Lopez; Pardal, Cristina Barreiro; Alcantud, Jesús Fernández; Antolinos, Mercedes Ayuso; Barrios, Francisco; Casanova, Ana Collantes; Castro, Manuel Ruiz; Crespo, Beatriz Infantes; Felipe, Uzuri Lancha; Fuster, Marta Liceras; García, Máximo Sanz; Garrote, Begoña Herrero; Gonzalez, Ricardo Moreno; Granero, Maria José Montes; de la Guía, Carlos Lloreda; López, Raquel Chaves; López, Santiago de Frutos; Martinez, Jose Javier Marco; Mostaza, Angel Garcia; Moreno, Antonio Jiménez; Osado, Irene Riquelme; Pastor, Ana Bardina; Peña, Rosa; Pérez, Mónica Rustarazo; Piña, María Aliaño; Romero, Carlos Aranda; Rodríguez, Elena Rodríguez; Sáez, Vicente Pedroviejo; Safatle, Fernando; Salvan, Javier Hernández; Sampedro, Mar Galán; de la Torre, Patricia Alfaro; Toro, Jonatan Pérez; Unzúe, Crsitina Lasa; Vargas, Maria José; Bernal, David Garcia; Echevarria, Mercedes; Iglesias, Alejandro Ubeda; Loza, Ana; Morillo, Araceli Rodriguez; Serrano, Pedro Diaz; Sevilla, Fernando Caba Barrientos; Cacho, Elena; Calderón, Ricardo; Dufur, Mercedes; Marginet, Carolina; Monedero, Pablo; Yepes, Maria José; Alvarez, Luzdivina Rellán; Carballal, Francisca Fernández; Castiñeiras, Alberto Pensado; García, Paula Dieguez; López, Lorena Ramos; Maceiras, Pablo Rama; Puente, María Socorro Martínez; Rilo, Maria Teresa Rey; Alonso, Ana Esther Trujillo; Fernández, Sonia Rodríguez; García, Rafael Omaña; García, Aníbal Pérez; Puentes, Rafael Bello; Aguado, Domingo Nunez; Carballo, Carlos Lopez; Fernandez, Ricardo Fernandez; Presedo, Amadeo Toledo; de Rabago, Ricardo Bermejo Diaz; Velasco, Ana Rodriguez; Capel, Yolanda Jiménez; Cortés, Ana Fernández; García, Esther Martínez; Gimeno, Laura Martinez; Klamburg, Jordi; Omedas, Rosa Castillo; Núñez, Miriam González; Maristany, Clara Llubià; Ruiz, Enrique Moret; Artigas, Xavier; Castrillón, Sebastian; Espinosa, Nieves; Gomez-Caro, Ana María; Illa, Susana; India, Inmaculada; Martín-Huerta, Beatriz; Moral, Victoria; Moreno, Marisa; Fernández, Cristina Iglesias; García, Violeta Fernández; Hernández, Pedro Picatto; Checa, Angel Alberto Honrubia; Diaz, David Salvatierra; Noguera, Manuel Linero; Varela, Ignacio Pujol; Gallego, Miguel González; García, Oscar Martínez; Irujo, José Javier Ariño; Perrino, Carlos González; Picazo, Julio Rey; Timoneda, Francisco López; Arroyo, María Manzanero; Blanco, Isabel Albalá; Borja, Marcos Martínez; Burcio, Sara Martín; Castro, Nilda Martinez; Cerdeiriña, Aránzazu Puente; Concostrina, Marta de la Torre; Cristina, Medrano Viñas; Díaz, Trinidad Dorado; Esteruelas, Juan Avellanosa; Ingelmo, Ildefonso Ingelmo; Insuga, Paco Duran; Llamas, Elisabeth Claros; Lopez, Jose Juan Martín; Martín, María Beltran; Martín, Elena Elías; Mesa, Eva Ureta; Monterde, Manuela Loren; Montoiro, Paloma Alonso; Móstoles, Maria Luisa Gonzalez; Olarte, Eva Velasco; Pérez, Adolfo Martínez; Perez, Fernando Domínguez; Romero, Ana Serrano; Rous, Diego Parise; Ruiz, Nuria Mané; Ruiz, Jose Angel Palomo; Saiz, Alvaro Ruigomez; Terol, Alvaro de la Vega; Toha, Angel Candela; Utrera, Fernando Alvarez; Alberdi, Fermín; Elósegui, Itxaso; García, Javier; Garde, Pilar Marco; Mintegui, Escudero Itziar; Sáez, Iker García; Salas, Estibaliz; Zabarte, Mercedes; Diaz-Boladeras, Rosa-Maria; Mora-Guevara, Emilio; Zamora, Julia Ferreras; Bonet, Alfons; Salo, Lidia; Salinas, Unai; Zaballos, Juan; Alvarez, Ana Abella; Garrido, Carlos Jimenez; Roa, Juan Ramón Hita; Vidal, Federico Gordo; Garcia-Egea, Jorge; Elson, Monica Zamora; Seron-Arbeloa, Carlos; Asensio, Miguel Angel Mendiola; Simeón, Rosa Gastaldo; Alameda, Luis Enrique Muñoz; Angulo, Guillermo Oeding; Aranzubia, Monserrat; Arcas, Jose Juan; Arevalo, Julian; Belvert, Belén Quesada; Calvo, César Pérez; Cremades, Marta; Crespo, Pascual; Cuarental, Ana; del Olmo, Mercedes; Fernández, Pablo Turrión; Vega, José Luis Franqueza García Isabel Garcia; Herrera, Elena II; Llorente, Miguel Angel Alcala; Rabes, Cecilia Martin; de Maeyer, Ana Gamo; Marquez, Manuel Pérez; Mendoza, Diego López; Muñoz, José María Milicua; Martínez, Natividad Arias; Oviedo, Arnoldo Santos; Garrigues, Pau Benavent; Íñigo, José Alonso; Ferrandiz, Sergi Tormo; Sanchez-Morcillo, Silvia; Sánchez, Matilde Lafuente; Parra, Asunción Marqués; Vidal, Sonia Gomar; Allué, Raquel Montoiro; Etayo, Begoña Zalba; Rodriguez, Raquel Bustamante; Villen, Luis Martin; Jimenez, Cristina Molla; de Zayas, Ricardo Salas; Moreno, Cristina Dolera; Pacheco, Fernando SanJose; Pascual, Jose Luis Anton; Gude, Fernando Tejera; Riestra, Eva Manteiga; Delgado, Francisco Cota; Prados, Maria Victoria de la Torre; Barrios, Javier; Cervera-Montes, Manuel; García-Sanz, Mercedes; García, Vicente; Sanmiguel, Guillermo; Álvaro, Julian López; Barrachima, Beatriz Bornay; Bermejo, Francisco Jose Romero; Pilar, Alberto Garcia Fernandez; Garcia, Martinez; Ramírez, Carolina Navarro; Ramos, Jorge Gómez; Samaniego, Luis Angel; Belenguer-Muncharaz, Alberto; Ferrándiz-Selles, Amparo; Mateu-Campos, Maria-Lidon; Domínguez, David; Espinosa, Elena; León, Teresa; Betancor, Nazario Ojeda; Cortes, Javier Garcia; Díaz, Juan José Díaz; Canalechevarria, Ana Manzano; Novales, Beatriz Fores; Peña, Jose Manuel Garcia; Delgado, Tomas Rodriguez; Roquerio, Beatriz Santamaria; Sainz, Juan Jose Gomez; Soto, Teresa Tebar; Chew, Michelle; Seeman-Lodding, Heléne; Dahm, Peter; Hergès, Helena Odenstedt; Lundborg, Christoffer; Söndergaard, Sören; Rylander, Christian; Sari, Ferenc; Tibblin, Anna Oscarsson; Adolfsson, Anne; Klarin, Bengt; Schrey, Susann; Merisson, Edyta; Rydén, Jörgen; Divander, Mona Britt; Hedin, Annika; Hedlund, Daniel; Lindkvist, Mikael Axelsson; Jawad, Monir; Layous, Lona; Wernerman, Jan; Björne, Håkan; Brattström, Olof; Olheden, Staffan; Oldner, Anders; Sellden, Eva; Walder, Bernhard; Wickboldt, Nadine; Rossi, Ariane; Steiner, Luzius; Djurdjevic, Mirjana; Lussmann, Roger; Geisen, Martin; Hofer, Christoph; Turina, Matthias; Grocott, Mike; Goldhill, David; Everett, Lynn; Harris, Katy; Wright, Maggie; Adams, David; Alderson, Lorraine; Baker, Julie; Christie, Iain; Ferguson, Colin; Hill, Matthew; Holmes, Kate; Hutton, Andrew; Minto, Gary; Moor, Paul; Porter, Andrew; Struthers, Richard; Akotia, Niven; Belhaj, Alaa; Chang, Serene; Collantes, Enrique; Eigener, Katrin; Husband, Michael; Khan, Ahsun; Kong, Ming-Li; McAlees, Eleanor Jane; MacDonald, Neil; Niebrzegowska, Edyta; Parnell, Wendy; Smith, Amanda; Chhatwal, Ally; Jhingan, Smriti; Muswell, Richard; Poon, Yoyo; Singh, Nidhita; Stephens, Robert; Vasan, Robin; Waife, Nicola; Weda, Tahmina; Clarke, Adrian; Szakmany, Tamas; Fletcher, Simon; Rosbergen, Melissa; Blunt, Mark; Prince, Liz; Wong, Kate; Kumar, Ram; Stilwell, Sarah; Couper, Keith; Crooks, Neil; Gao-Smith, Fang; Melody, Teresa; Snaith, Catherine; Patel, Jaimin; Parekh, Dhruv; Yeung, Joyce; Loughnan, Bernadette; Moosajee, Vas; Rope, Tamsin; Edger, Lliam; Dawson, Julie; Hadfield, Daniel; Hopkins, Phil; McDonald, Lisa; Willars, Chris; Campbell, Gillian; Craig, Jayne; Smith, Andrew; Ladipo, Karleen; Lockwood, Geoff; Moreno, Juan; Ballington, Ruth; Hamandishe, Sibongilele; Rogerson, David; Cowman, Sarah; Hayden, Paul; Pinto, Nuno; Sandhar, Taj; Arawwawala, Dilshan; Brotherston, Lauren; Mitchell-Inwang, Christine; Walsh, Helena; Alagarsamy, Famila; Goon, Serena; Karcheva, Sylvia; Krepska, Amy; McKinney, Brian; Patil, Vishal; Batchelor, Nicholas; Day, Christopher; Finch, Louise; Gibson, Charlie; Grayling, Matthew; Hubble, Sheena; Key, William; Knight, Thomas; Loosley, Alexander; Margetts, Paul; Stewart, Hannah; Bewley, Jeremy; Hurley, Katrina; Murphy, Ruth; Philpott, Catherine; Pollock, Kathryn; Sweet, Katie; Thomas, Matthew; Tucker, Katy; Windsor, David; Conway, Daniel; Gold, Steve; Quraishi, Tanviha; Cupitt, Jason; Baddeley, Sally; Brown, John David; Foo, Irwin; Mantle, Damien; Carvalho, Peter; Huddart, Sam; Kirk-Bayley, Justin; Smith, Rebecca; Milligan, Lisa; Poulose, Sonia; Sarkar, Som; Nolan, Jerry; Pedley, Emma; Padkin, Andrew; Pesian, Siamak; Rajamanickam, Satish; Ramkumar, Konnur; Thomas, Jerry; Crayford, Alison; Turner, Angus; Bottrill, Fiona; Webb, Stephen; Jhanji, Shaman; MacCallum, Niall; Wessels, Kate; Wigmore, Tim; Meikle, Alistair; Wilson, Stephen; White, Stuart; Bonnett, Andrew; Rushton, Andrew; Williams, Colin; Zuzan, Oliver; Hall, Andrew; Montgomery, Jane; Piggot, Ailie; Read, Richard; Stocker, Mary; Tamm, Tiina; Agarwal, Banwari; Ward, Stephen; Brown, Lucy; Joy, Manju; Venkatesh, Suresh; Hughes, Thomas; Zsisku, Lajos; Roy, Alistair; Hooper, Victoria; Mouland, Johanna; Nightingale, Jeremy; Rose, Steve; Chiam, Patrick; Chohan, Harnita; Dickson, Chris; Gibb, Sarah; Higham, Charley; Harvey, Caroline; Janarthanan, Chandra; Jones, Laura; Kapoor, Avinash; Moll, Mark; Roberts, Louise; Saunders, David; Arnold, Glenn; Gibbs, Claire; Jhurgursing, Mhairi; Pierro, Dena; Pritchard, Frances; Doyle, Patrick; Templeton, Maie; Wilson, Robert; Zantua, Kim; Collyer, Thomas; Featherstone, James; Worton, Rachael; Bruce, Jane; McGuigan, Kate; Price, Grant; Moreton, Sarah; Pulletz, Mark; Anderson, Helen; Baxter, Ian; Beckingsale, Alex; Callaghan, Mark; Datta, Ansu; Dawson, Jo; Gollogly, Jackit; Izod, Chris; Lobaz, Steve; MacFie, Caroline; Patel, Manju; Payne, Heather; Singh, Raj; Timms, Gemma; McLeod, Shaun; O'Brian, Peter; Horner, Elspeth; Joshi, Vivekananda; Stuart-Smith, Karen; Seale, Tania; Bolger, Clare; Collins, Hannah; Ekins, Emma; Hawkins, Lesley; Jonas, Max; Linford, Karen; Wadams, Beverley; Beach, Madeleine; Vizcaychipi, Marcela; Jewsbury, William; Davies, Simon; Balaji, Packianathaswamy; Kangaraj, Muthuraj; Pissay, Nagesh; Smith, Neil; Gopalakrishnan, Senthilkumar; MacKinnon, John; Strandvik, Gustav; Francis, Ruth; Jennings, Adrian; Keating, Matthew; Kumar, Sajith; Leese, Sarah; Magee, Cliona; Pilsbury, Jane; Ralph, James; Riddington, David; Sachdeva, Rajneesh; Snelson, Catherine; Vasanth, Suresh; Wilde, Judith; Lavender, Beth; Lyons, Rachel; Watters, Malcolm; Adams, Tim; Dyer, Simon; Tindall, Lucy; Claxton, Andrew; Netke, Meenu; Akouds, Esam; Bates, Debrah; Gallagher, Heather; Hatton, Jonathan; Holroyd, William; Mitra, Atideb; Nurse, Trudy; Reed, Deborah; Desikan, Somi; Barber, Russell; Childs, Sophie; O'Carroll-Kuehn, Britta; Wyldbore, Mark; Al-Abdaly, Ayad; Amatya, Suman; Bhaskaran, Sherly; Chandan, Garud; Chaudhry, Suman; Chikungwa, Moses; Earnshaw, Greg; Grewal, Moni; Haque, Shamimul; Hawkins, John; Javaid, Ahmed; Jackson, Clare; Kamel, Miriam; Marla, Ruchira; Mculloch, Dori-Ann; Parker, Tom; Salib, Yussof; Saravanmuthu, Ramesh; Secker, Chris; Sockalingam, Siva; Taylor, Anne; Austine, Pauline; Kanade, Vrushali; Paal, Dora; Mok, May Un Sam; Burtenshaw, Andrew; Davis, Laura; Ellahee, Parvez; Freeman, David; Pierson, Richard; Wollaston, Julie; Karmarkar, Amara; Ball, Clare; Calton, Emily; Maxwell, Louise; Walker, Rachel; Bland, Martin; Bullock, Lynne; Harrison-Briggs, Donna; Hodge, Paul; Krige, Anton; Dempsey, Ged; Hammell, Claire; Loveridge, Robert; Parker, Robert; Snell, Jane; Wright, Carl; Baker, Andy; Barr, Katharine; Belcher, Alex; Bonnington, Sam; Bougeard, Anne-Marie; Fitzgerald, Emma; Ford, Rachael; Gillard, Chantal; Griffiths, Liz; Greenberg, Lizzie; Huber, Jonathan; Mathieu, Steve; Richardson, Neil; Tompsett, Laura; White, Nigel; Patel, Santosh; Corner, Victoria; Thomas, Richard; Trodd, Dawn; Wilson, Jennifer; Copley, Ed; Flutter, Laura; Hulme, Jonathan; Susarla, Jay; Thwaites, Alison; Jayasundera, Suraj; McAfee, Sean; Chantler, Jonathan; McKechnie, Stuart; Neely, Julia; Mouton, Ronelle; Scarth, Edward; Soar, Jasmeet; Buss, Joanne; Currie, Vicki; Sange, Mansoor; Kuttler, Anja; Power, Fiona; Alexander, David; Dunne, Kevin; Shinner, Guy; Black, Euan; Haldane, Grant; Kerr, Jennie; Saran, Taj; Ward, Geraldine; Jefferies, Fiona; Alexander, Peter; Royle, Alison; Nahla, Farid; Bowles, Tim; Gregory, Maggie; Ahern, Rebecca; Cartlidge, David; Craker, Lloyd; Thompson, Christopher; Bidd, Heena; Giles, Julian; Manser, Amanda; Parry, Gareth; Chan, Peter; Das, Dinesh; Fahmy, Nisreen; Higgins, David; Khader, Ahmed; Stone, Alex; Leonardi, Silvia; Rose, Oliver; Bright, Elizabeth; Ercole, Ari; Rafi, Muhammed Amir; Ramasamy, Radhika; Sheshgiri, Bengeri; Merrill, Colin; Page, Valerie; Walker, Elaine; Harris, Stephen; Hughes, Sarah; Morrison, Alan; Razouk, Khaled; Ayman, Mustafa; al-Subaie, Nawaf; Arif, Fuhazia; Cashman, Jeremy; Cecconi, Maurizio; Edsell, Mark; Fossati, Nicoletta; Hammond, Sarah Jane; Hamilton, Mark; Lonsdale, Dagan; Moran, Carl; Siegmueller, Claas; Velzeboer, Freya; Wong, Patrick; Jakeman, Alicia; Mowatt, Chris

    2012-01-01

    Clinical outcomes after major surgery are poorly described at the national level. Evidence of heterogeneity between hospitals and health-care systems suggests potential to improve care for patients but this potential remains unconfirmed. The European Surgical Outcomes Study was an international

  3. Incidence and prognostic factors for postoperative frozen shoulder after shoulder surgery: a prospective cohort study.

    Science.gov (United States)

    Koorevaar, Rinco C T; Van't Riet, Esther; Ipskamp, Marcel; Bulstra, Sjoerd K

    2017-03-01

    Frozen shoulder is a potential complication after shoulder surgery. It is a clinical condition that is often associated with marked disability and can have a profound effect on the patient's quality of life. The incidence, etiology, pathology and prognostic factors of postoperative frozen shoulder after shoulder surgery are not known. The purpose of this explorative study was to determine the incidence of postoperative frozen shoulder after various operative shoulder procedures. A second aim was to identify prognostic factors for postoperative frozen shoulder after shoulder surgery. 505 consecutive patients undergoing elective shoulder surgery were included in this prospective cohort study. Follow-up was 6 months after surgery. A prediction model was developed to identify prognostic factors for postoperative frozen shoulder after shoulder surgery using the TRIPOD guidelines. We nominated five potential predictors: gender, diabetes mellitus, type of physiotherapy, arthroscopic surgery and DASH score. Frozen shoulder was identified in 11% of the patients after shoulder surgery and was more common in females (15%) than in males (8%). Frozen shoulder was encountered after all types of operative procedures. A prediction model based on four variables (diabetes mellitus, specialized shoulder physiotherapy, arthroscopic surgery and DASH score) discriminated reasonably well with an AUC of 0.712. Postoperative frozen shoulder is a serious complication after shoulder surgery, with an incidence of 11%. Four prognostic factors were identified for postoperative frozen shoulder: diabetes mellitus, arthroscopic surgery, specialized shoulder physiotherapy and DASH score. The combination of these four variables provided a prediction rule for postoperative frozen shoulder with reasonable fit. Level II, prospective cohort study.

  4. Quality of life after surgery for intractable partial epilepsy in children: a cohort study with controls.

    Science.gov (United States)

    Mikati, Mohamad A; Ataya, Nour; Ferzli, Jessica; Kurdi, Rana; El-Banna, Diana; Rahi, Amal; Shamseddine, Alhan; Sinno, Durriyah; Comair, Youssef

    2010-08-01

    Investigate if quality of life (QOL) normalizes on long-term follow-up after surgery for partial epilepsy in children. This is a cohort study with controls in which a consecutive cohort of nineteen 2-14-year-old children who underwent focal resections for intractable partial seizures between 1996 and 2006, were matched with 19 non-surgery intractable partial epilepsy patients, and with 19 healthy subjects. The two epilepsy groups were matched for age, sex, socio-economic status (SES), cognitive level, seizure type, and seizure frequency. The healthy group was matched with the two epilepsy groups for age, sex, SES, and cognitive level. QOL was assessed using the QOLCE (Quality of Life in Childhood Epilepsy Questionnaire). In the surgery group (follow-up 3.84+/-2.26 years), 78.9% had Engel class-I versus 21.1% in non-surgery (p=0.01) (follow-up 3.44+/-2.95 years). Surgery patients were similar to healthy subjects in the social, emotional, cognitive, behavioral, and overall QOL (p>0.05) but had lower scores in the total QOL, physical, and health domains (p0.05, power>0.8). Our data indicate that epilepsy surgery for partial seizures in children is associated with better QOL as compared to children with intractable epilepsy who are not operated on, and suggest that in those who achieve seizure freedom normal QOL may at least potentially be possible.

  5. Metabolic Syndrome Prevalence and Associations in a Bariatric Surgery Cohort from the Longitudinal Assessment of Bariatric Surgery-2 Study

    Science.gov (United States)

    Selzer, Faith; Smith, Mark D.; Berk, Paul D.; Courcoulas, Anita P.; Inabnet, William B.; King, Wendy C.; Pender, John; Pomp, Alfons; Raum, William J.; Schrope, Beth; Steffen, Kristine J.; Wolfe, Bruce M.; Patterson, Emma J.

    2014-01-01

    Abstract Background: Metabolic syndrome is associated with higher risk for cardiovascular disease, sleep apnea, and nonalcoholic steatohepatitis, all common conditions in patients referred for bariatric surgery, and it may predict early postoperative complications. The objective of this study was to determine the prevalence of metabolic syndrome, defined using updated National Cholesterol Education Program criteria, in adults undergoing bariatric surgery and compare the prevalence of baseline co-morbid conditions and select operative and 30-day postoperative outcomes by metabolic syndrome status. Methods: Complete metabolic syndrome data were available for 2275 of 2458 participants enrolled in the Longitudinal Assessment of Bariatric Surgery-2 (LABS-2), an observational cohort study designed to evaluate long-term safety and efficacy of bariatric surgery in obese adults. Results: The prevalence of metabolic syndrome was 79.9%. Compared to those without metabolic syndrome, those with metabolic syndrome were significantly more likely to be men, to have a higher prevalence of diabetes and prior cardiac events, to have enlarged livers and higher median levels of liver enzymes, a history of sleep apnea, and a longer length of stay after surgery following laparoscopic Roux-en-Y gastric bypass (RYGB) and gastric sleeves but not open RYGB or laparoscopic adjustable gastric banding. Metabolic syndrome status was not significantly related to duration of surgery or rates of composite end points of intraoperative events and 30-day major adverse surgical outcomes. Conclusions: Nearly four in five participants undergoing bariatric surgery presented with metabolic syndrome. Establishing a diagnosis of metabolic syndrome in bariatric surgery patients may identify a high-risk patient profile, but does not in itself confer a higher risk for short-term adverse postsurgery outcomes. PMID:24380645

  6. Prognosis of oesophageal adenocarcinoma and squamous cell carcinoma following surgery and no surgery in a nationwide Swedish cohort study

    Science.gov (United States)

    Mattsson, Fredrik

    2018-01-01

    Objectives To assess the recent prognostic trends in oesophageal adenocarcinoma and oesophageal squamous cell carcinoma undergoing resectional surgery and no such surgery. Additionally, risk factors for death were assessed in each of these patient groups. Design Cohort study. Setting A population-based, nationwide study in Sweden. Participants All patients diagnosed with oesophageal adenocarcinoma and oesophageal squamous cell carcinoma in Sweden from 1 January 1990 to 31 December 2013, with follow-up until 14 May 2017. Outcome measures Observed and relative (to the background population) 1-year, 3-year and 5-year survivals were analysed using life table method. Multivariable Cox regression provided HR with 95% CI for risk factors of death. Results Among 3794 patients with oesophageal adenocarcinoma and 4631 with oesophageal squamous cell carcinoma, 82% and 63% were men, respectively. From 1990–1994 to 2010–2013, the relative 5-year survival increased from 12% to 15% for oesophageal adenocarcinoma and from 9% to 12% for oesophageal squamous cell carcinoma. The corresponding survival following surgery increased from 27% to 45% in oesophageal adenocarcinoma and from 24% to 43% in oesophageal squamous cell carcinoma. In patients not undergoing surgery, the survival increased from 3% to 4% for oesophageal adenocarcinoma and from 3% to 6% for oesophageal squamous cell carcinoma. Women with oesophageal squamous cell carcinoma had better prognosis than men both following surgery (HR 0.71, 95% CI 0.61 to 0.83) and no surgery (HR 0.86, 95% CI 0.81 to 0.93). Conclusions The prognosis has improved over calendar time both in oesophageal adenocarcinoma and oesophageal squamous cell carcinoma in Sweden that did and did not undergo surgery. Women appear to have better prognosis in oesophageal squamous cell carcinoma than men, independent of treatment. PMID:29748347

  7. Early Oral Feeding After Surgery for Upper Gastrointestinal Malignancies: A Prospective Cohort Study

    Directory of Open Access Journals (Sweden)

    Saeed Shoar

    2016-05-01

    Full Text Available Objectives: Poor nutritional status following abdominal surgeries for esophageal and gastric cancers remains a major challenge in postoperative care. Our study aimed to investigate the efficacy of starting early oral feeding (EOF in patients undergoing surgical resection of upper gastrointestinal malignancies. Methods: A total of 180 consecutive patients with a diagnosis of esophageal or gastric malignancies undergoing elective surgical resection between January 2008 and February 2011 were enrolled in this prospective cohort study. Seventy-two patients were assigned to the EOF group, and 108 patients received late oral feeding (LOF. Postoperative endpoints were compared between the two groups. Results: Nasogastric tubes were removed from patients on average 3.3±1.6 days after the surgery in the EOF group and 5.2±2.5 days in the LOF group (p 0.050. Conclusions: EOF is safe following esophageal and gastric cancer surgery and results in faster recovery and hospital discharge.

  8. Associations of Bariatric Surgery With Changes in Interpersonal Relationship Status: Results From 2 Swedish Cohort Studies.

    Science.gov (United States)

    Bruze, Gustaf; Holmin, Tobias E; Peltonen, Markku; Ottosson, Johan; Sjöholm, Kajsa; Näslund, Ingmar; Neovius, Martin; Carlsson, Lena M S; Svensson, Per-Arne

    2018-03-28

    Bariatric surgery is a life-changing treatment for patients with severe obesity, but little is known about its association with interpersonal relationships. To investigate if relationship status is altered after bariatric surgery. Changes in relationship status after bariatric surgery were examined in 2 cohorts: (1) the prospective Swedish Obese Subjects (SOS) study, which recruited patients undergoing bariatric surgery from September 1, 1987, to January 31, 2001, and compared their care with usual nonsurgical care in matched obese control participants; and (2) participants from the Scandinavian Obesity Surgery Registry (SOReg), a prospective, electronically captured register that recruited patients from January 2007 through December 2012 and selected comparator participants from the general population matched on age, sex, and place of residence. Data was collected in surgical departments and primary health care centers in Sweden. The current analysis includes data collected up until July 2015 (SOS) and December 2012 (SOReg). Data analysis was completed from June 2016 to December 2017. In the SOS study, information on relationship status was obtained from questionnaires. In the SOReg and general population cohort, information on marriage and divorce was obtained from the Swedish Total Population Registry. The SOS study included 1958 patients who had bariatric surgery (of whom 1389 [70.9%] were female) and 1912 matched obese controls (of whom 1354 [70.8%] were female) and had a median (range) follow-up of 10 (0.5-20) years. The SOReg cohort included 29 234 patients who had gastric bypass surgery (of whom 22 131 [75.6%] were female) and 283 748 comparators from the general population (of whom 214 342 [75.5%] were female), and had a median (range) follow-up of 2.9 (0.003-7.0) years. In the SOS study, the surgical patients received gastric banding (n = 368; 18.8%), vertical banded gastroplasty (n = 1331; 68.0%), or gastric bypass (n = 259; 13

  9. Lower Risk of Stroke after Deformity Surgery: Long Term Benefit Demonstrated by a National Cohort Study

    Directory of Open Access Journals (Sweden)

    Liang-Chung Huang

    2015-10-01

    Full Text Available Objectives: This study aimed to investigate the long-term risk of stroke in adult patients with spinal deformity. Specifically, the study addressed the possible protective effect of surgery for spinal deformity against stroke. Methods: Using the National Health Insurance Research Database (NHIRD, a monopolistic national database in Taiwan, this retrospective cohort study analyzed the incidence of stroke in patients with adult spinal deformity (ASD in a 11-year period. A total of 13,503 patients, between 55 and 75 years old, were identified for the diagnosis of ASD. The patients were grouped into two: the surgical group (n = 10,439 who received spinal fusion surgery, and the control group (n = 2124 who received other medical treatment. The incidence rates of all subsequent cerebrovascular accidents, including ischemic and hemorrhagic strokes, were calculated. Hazard ratios for stroke were calculated use a full cohort and a propensity score matched cohort. Adjustments for co-morbidities that may predispose to stroke, including hypertension, diabetes mellitus, arrhythmia and coronary heart disease were conducted. Kaplan-Meier and Cox regression analyses were performed to compare the risk of stroke between the two groups. Results: During the total observation period of 50,450 person-years, the incidence rate of stroke in the surgical group (15.55 per 1000 person-years was significantly lower than that of the control group (20.89 per 1000 person-years, p < 0.001. Stroke was more likely to occur in the control group than in the surgical group (crude hazard ratio 1.34, p < 0.001; adjusted HR 1.28, p < 0.001, by a propensity score matched model. Conclusions: In this national cohort of more than 13,000 ASD patients covering 10 years, stroke was approximately 25% less likely to happen in patients who underwent spinal fusion surgery than those who received medical management. Therefore, spinal fusion surgery may provide a protective effect against stroke

  10. The advantages of carbon dioxide laser applications in paediatric oral surgery. A prospective cohort study.

    Science.gov (United States)

    Hanna, R; Parker, S

    2016-11-01

    The aim of this study is to evaluate and demonstrate the advantages of the carbon dioxide laser in paediatric oral surgery patients in terms of less post-operative complications, healing without scaring, functional benefits, positive patient perception and acceptance of the treatment. One hundred fit and healthy paediatric patients (aged 4-15 years) were recruited to undergo laser surgery for different soft tissue conditions. The outcome of these laser treatments was examined. The Wong-Baker Faces Pain Rating Scale was employed to evaluate the pain before, immediately after laser treatment in the clinic and 1 day after post-operatively at home. Post-operative complications and patients' perception and satisfaction were self-reported during a review telephone call the day after treatment. The patients were reviewed 2 weeks after surgery. Laser parameter was 1.62 W, measured by power meter, continuous wave mode with 50 % emission cycle. The beam spot size at the target tissue was 0.8 mm. The pain score pre-operative, during and immediately after laser treatment was rated 0. Whilst the pain score 1 day after surgery was rated between 0 and 2, the healing time was measured over 2 weeks. None of the patients reported post-operative complications after surgery. Patients' perception and acceptance were rated very good. Laser dentistry is a promising field in modern minimally invasive dentistry, which enables provision of better care for children and adolescents. In this cohort study, the use of the carbon dioxide laser therapy offers a desirable, acceptable and minimally invasive technique in the surgical management of soft tissues in paediatric oral surgery with minimal post-operative complications.

  11. Predictors of red blood cell transfusion after cardiac surgery: a prospective cohort study

    Directory of Open Access Journals (Sweden)

    Camila Takao Lopes

    2015-12-01

    Full Text Available Abstract OBJECTIVE To identify predictors of red blood cell transfusion (RBCT after cardiac surgery. METHOD A prospective cohort study performed with 323 adults after cardiac surgery, from April to December of 2013. A data collection instrument was constructed by the researchers containing factors associated with excessive bleeding after cardiac surgery, as found in the literature, for investigation in the immediate postoperative period. The relationship between risk factors and the outcome was assessed by univariate analysis and logistic regression. RESULTS The factors associated with RBCT in the immediate postoperative period included lower height and weight, decreased platelet count, lower hemoglobin level, higher prevalence of platelet count <150x10 3/mm3, lower volume of protamine, longer duration of anesthesia, higher prevalence of intraoperative RBCT, lower body temperature, higher heart rate and higher positive end-expiratory pressure. The independent predictor was weight <66.5Kg. CONCLUSION Factors associated with RBCT in the immediate postoperative period of cardiac surgery were found. The independent predictor was weight.

  12. The Zelnorm epidemiologic study (ZEST: a cohort study evaluating incidence of abdominal and pelvic surgery related to tegaserod treatment

    Directory of Open Access Journals (Sweden)

    Seeger John D

    2012-11-01

    Full Text Available Abstract Background Pre-marketing clinical studies of tegaserod suggested an increased risk of abdominal surgery, particularly cholecystectomy. We sought to quantify the association between tegaserod use and the occurrence of abdominal or pelvic surgery, including cholecystectomy. Methods This cohort study was conducted within an insured population. Tegaserod initiators and similar persons who did not initiate tegaserod were followed for up to six months for the occurrence of abdominal or pelvic surgery. Surgical procedures were identified from health insurance claims validated by review of medical records. The incidence of confirmed outcomes was compared using both as-matched and as-treated analyses. Results Among 2,762 tegaserod initiators, there were 94 abdominal or pelvic surgeries (36 gallbladder: among 2,762 comparators there were 134 abdominal or pelvic surgeries (37 gallbladder (hazard ratio HR] = 0.70, 95% confidence interval [C.I.] = 0.54-0.91 overall, HR = 0.98, 95% C.I. = 0.62-1.55 for gallbladder. Current tegaserod exposure compared to nonexposure was associated with a rate ratio [RR] of 0.68 (95% C.I. = 0.48-0.95 overall, while the RR was 0.99 (95% C.I. = 0.56-1.77 for gallbladder surgery. Conclusions In this study, tegaserod use was not found to increase the risk of abdominal or pelvic surgery nor the specific subset of gallbladder surgery.

  13. Timing of renal replacement therapy after cardiac surgery: a retrospective multicenter Spanish cohort study.

    Science.gov (United States)

    García-Fernández, Nuria; Pérez-Valdivieso, José Ramón; Bes-Rastrollo, Maira; Vives, Marc; Lavilla, Javier; Herreros, Jesús; Monedero, Pablo

    2011-01-01

    The optimal time to initiate renal replacement therapy (RRT) in cardiac surgery-associated acute kidney injury (CSA-AKI) is unknown. Evidence suggests that the early use of RRT in critically ill patients is associated with improved outcomes. We studied the effects of time to initiation of RRT on outcome in patients with CSA-AKI. This was a retrospective observational multicenter study (24 Spanish hospitals). We analyzed data on 203 patients who required RRT after cardiac surgery in 2007. The cohort was divided into 2 groups based on the time at which RRT was initiated: in the early RRT group, therapy was initiated within the first 3 days after cardiac surgery; in the late group, RRT was begun after the 3rd day. Multivariate nonconditional logistic and linear regression models were used to adjust for potential confounders. In-hospital mortality was significantly higher in the late RRT group compared with early RRT patients (80.4 vs. 53.2%; p < 0.001; adjusted odds ratio of 4.1, 95% CI: 1.6-10.0). Also, patients in the late RRT group had longer adjusted hospital stays by 11.6 days (95% CI: 1.4-21.9) and higher adjusted percentage increases in creatinine at discharge compared with baseline by 67.7% (95% CI: 28.5-106.4). Patients who undergo early initiation of RRT after CSA-AKI have improved survival rates and renal function at discharge and decreased lengths of hospital stay. Copyright © 2011 S. Karger AG, Basel.

  14. Organizational Factors and Long-Term Mortality after Hip Fracture Surgery. A Cohort Study of 6143 Consecutive Patients Undergoing Hip Fracture Surgery

    DEFF Research Database (Denmark)

    Lund, Caterina A; Møller, Ann M; Wetterslev, Jørn

    2014-01-01

    OBJECTIVE: In hospital and health care organizational factors may be changed to reduce postoperative mortality. The aim of this study is to evaluate a possible association between mortality and 'length of hospital stay', 'priority of surgery', 'time of surgery', or 'surgical delay' in hip fracture...... surgery. DESIGN: Observational cohort study. SETTING: Prospectively and consecutively reported data from the Danish Anaesthesia Database were linked to The Danish National Registry of Patients and The Civil Registration System. Records on vital status, admittance, discharges, codes of diagnosis......; therefore cluster randomized clinical trials comparing different clinical set ups may be warranted evaluating health care organizational factors....

  15. The Influence of Preoperative and Postoperative Psychological Symptoms on Clinical Outcome after Shoulder Surgery: A Prospective Longitudinal Cohort Study.

    Science.gov (United States)

    Koorevaar, Rinco C T; van 't Riet, Esther; Gerritsen, Marleen J J; Madden, Kim; Bulstra, Sjoerd K

    2016-01-01

    Psychological symptoms are highly prevalent in patients with shoulder complaints. Psychological symptoms in patients with shoulder complaints might play a role in the aetiology, perceived disability and pain and clinical outcome of treatment. The aim of this study was to assess whether preoperative symptoms of distress, depression, anxiety and somatisation were associated with a change in function after shoulder surgery and postoperative patient perceived improvement of pain and function. In addition, the change of psychological symptoms after shoulder surgery was analyzed and the influence of postoperative symptoms of psychological disorders after surgery on the change in function after shoulder surgery and perceived postoperative improvement of pain and function. A prospective longitudinal cohort study was performed in a general teaching hospital. 315 consecutive patients planned for elective shoulder surgery were included. Outcome measures included change of Disabilities of the Arm, Shoulder and Hand (DASH) score and anchor questions about improvement in pain and function after surgery. Psychological symptoms were identified before and 12 months after surgery with the validated Four-Dimensional Symptom Questionnaire (4DSQ). Psychological symptoms were encountered in all the various shoulder diagnoses. Preoperative symptoms of psychological disorders persisted after surgery in 56% of patients, 10% of patients with no symptoms of psychological disorders before surgery developed new psychological symptoms. Preoperative symptoms of psychological disorders were not associated with the change of DASH score and perceived improvement of pain and function after shoulder surgery. Patients with symptoms of psychological disorders after surgery were less likely to improve on the DASH score. Postoperative symptoms of distress and depression were associated with worse perceived improvement of pain. Postoperative symptoms of distress, depression and somatisation were

  16. Early symptoms in the prodromal phase of delirium: a prospective cohort study in elderly patients undergoing hip surgery

    NARCIS (Netherlands)

    de Jonghe, Jos F. M.; Kalisvaart, Kees J.; Dijkstra, Marty; van Dis, Huib; Vreeswijk, Ralph; Kat, Martin G.; Eikelenboom, Piet; van der Ploeg, Tjeerd; van Goo, Willem A.

    2007-01-01

    OBJECTIVES: The authors investigated prodromal delirium symptoms in elderly patients undergoing hip surgery. METHODS: This was a prospective cohort study in the setting of a large medical school-affiliated general hospital in Alkmaar, The Netherlands. Participants were patients undergoing hip

  17. Variation among cleft centres in the use of secondary surgery for children with cleft palate: a retrospective cohort study

    Science.gov (United States)

    Sitzman, Thomas J; Hossain, Monir; Carle, Adam C; Heaton, Pamela C; Britto, Maria T

    2017-01-01

    Objectives To test whether cleft centres vary in their use of secondary cleft palate surgery, also known as revision palate surgery, and if so to identify modifiable hospital factors and surgeon factors that are associated with use of secondary surgery. Design Retrospective cohort study. Setting Forty-three paediatric hospitals across the USA. Patients Children with cleft lip and palate who underwent primary cleft palate repair from 1999 to 2013. Main outcome measures Time from primary cleft palate repair to secondary palate surgery. Results We identified 4939 children who underwent primary cleft palate repair. At 10 years after primary palate repair, 44% of children had undergone secondary palate surgery. Significant variation existed among hospitals (ppalate repair before 9 months of age was associated with an increased hazard of secondary palate surgery (initial HR 6.74, 95% CI 5.30 to 8.73). Postoperative antibiotics, surgeon procedure volume and hospital procedure volume were not associated with time to secondary surgery (p>0.05). Of the outcome variation attributable to hospitals and surgeons, between-hospital differences accounted for 59% (ppalate surgery exists depending on a child’s age at primary palate repair and the hospital and surgeon performing their repair. Performing primary palate repair before 9 months of age substantially increases the hazard of secondary surgery. Further research is needed to identify other factors contributing to variation in palate surgery outcomes among hospitals and surgeons. PMID:29479567

  18. Use of antibiotics for urinary tract infection in women undergoing surgery for urinary incontinence: a cohort study.

    Science.gov (United States)

    Guldberg, Rikke; Kesmodel, Ulrik Schiøler; Brostrøm, Søren; Kærlev, Linda; Hansen, Jesper Kjær; Hallas, Jesper; Nørgård, Bente Mertz

    2014-02-04

    To describe the use of antibiotics for urinary tract infection (UTI) before and after surgery for urinary incontinence (UI); and for those with use of antibiotics before surgery, to estimate the risk of treatment for a postoperative UTI, relative to those without use of antibiotics before surgery. A historical population-based cohort study. Denmark. Women (age ≥18 years) with a primary surgical procedure for UI from the county of Funen and the Region of Southern Denmark from 1996 throughout 2010. Data on redeemed prescriptions of antibiotics ±365 days from the date of surgery were extracted from a prescription database. Use of antibiotics for UTI in relation to UI surgery, and the risk of being a postoperative user of antibiotics for UTI among preoperative users. A total of 2151 women had a primary surgical procedure for UI; of these 496 (23.1%) were preoperative users of antibiotics for UTI. Among preoperative users, 129 (26%) and 215 (43.3%) also redeemed prescriptions of antibiotics for UTI within 0-60 and 61-365 days after surgery, respectively. Among preoperative non-users, 182 (11.0%) and 235 (14.2%) redeemed prescriptions within 0-60 and 61-365 days after surgery, respectively. Presurgery exposure to antibiotics for UTI was a strong risk factor for postoperative treatment for UTI, both within 0-60 days (adjusted OR, aOR=2.6 (95% CI 2.0 to 3.5)) and within 61-365 days (aOR=4.5 (95% CI 3.5 to 5.7)). 1 in 4 women undergoing surgery for UI was treated for UTI before surgery, and half of them had a continuing tendency to UTIs after surgery. Use of antibiotics for UTI before surgery was a strong risk factor for antibiotic use after surgery. In women not using antibiotics for UTI before surgery only a minor proportion initiated use after surgery.

  19. Statin use and vitreoretinal surgery: Findings from a Finnish population-based cohort study.

    Science.gov (United States)

    Loukovaara, Sirpa; Sahanne, Sari; Takala, Annika; Haukka, Jari

    2018-01-16

    Vitreoretinal (VR) surgery is the third most common intraocular surgery after refractive and cataract surgery. The impact of statin therapy on VR surgery outcomes remains unclear, despite a potentially beneficial effect. We explored the association of preoperative statin therapy and the need for revitrectomy after primary vitrectomy. Our historical, population-based, register-based, VR surgery cohort consisted of 5709 patients operated in a tertiary, academic referral hospital in Finland, during 2008-2014, covering 6.5 years. Subgroup analysis was performed as follows: eyes operated due to (i) rhegmatogenous retinal detachment (RRD), (ii) VR interface diseases (macular pucker/hole), (iii) diabetic maculopathy or proliferative retinopathy, (iv) vitreous haemorrhage, (v) lens subluxation, (vi) vitreous opacities or (vii) other VR indication. The primary end-point event was revitrectomy during a postoperative follow-up period of 1 year due to retinal redetachment, vitreous rehaemorrhage, postoperative endophthalmitis, recurrent pucker or unclosed macular hole. Rhegmatogenous retinal detachment (RRD) was the second most frequent indication of VR surgery, including 1916 patients, with 305 re-operations with rate 0.20 (95% CI 0.18-0.23) per person-year. Statin treatment in time of operation was associated with lower risk of re-operation according to relative scale (incidence rate ratio 0.72, 95% CI 0.53-0.97), but not in absolute scale (incidence rate difference -0.58, 95% CI -4.30 to 3.15 for 100 person-years). No association with statin therapy and vitrectomy outcome was observed in the other VR subgroups. Use of statin treatment was associated with a 28% lower risk of revitrectomy in patients operated due to RRD. Further randomized clinical trials are highly warranted. © 2018 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

  20. Symptomatic venous thromboembolism in orthognathic surgery and distraction osteogenesis: a retrospective cohort study of 4127 patients

    NARCIS (Netherlands)

    Verlinden, C.R.A.; Tuinzing, D.B.; Forouzanfar, T.

    2014-01-01

    Venous thromboembolism is a common postoperative complication, and orthopaedic procedures are particularly at risk. We designed a retrospective, single centre, observational, cohort study of 4127 patients (mean (SD) age 27 (11) years) who had elective orthognathic operations or distraction

  1. Carotid Artery Injury in Anterior Cervical Spine Surgery: Multicenter Cohort Study and Literature Review

    OpenAIRE

    H?rtl, Roger; Alimi, Marjan; Abdelatif Boukebir, Mohamed; Berlin, Connor D.; Navarro-Ramirez, Rodrigo; Arnold, Paul M.; Fehlings, Michael G.; Mroz, Thomas E.; Riew, K. Daniel

    2017-01-01

    Study Design: Retrospective study and literature review. Objective: To provide more comprehensive data about carotid artery injury (CAI) or cerebrovascular accident (CVA) related to anterior cervical spine surgery. Methods: We conducted a retrospective, multicenter, case series study involving 21 high-volume surgical centers from the AOSpine North America Clinical Research Network. Medical records of 17?625 patients who went through cervical spine surgery (levels from C2 to C7) between Januar...

  2. Surgical reintervention after antireflux surgery for gastroesophageal reflux disease: a prospective cohort study in 130 patients

    NARCIS (Netherlands)

    Furnée, Edgar J. B.; Draaisma, Werner A.; Broeders, Ivo A. M. J.; Smout, Andre J. P. M.; Gooszen, Hein G.

    2008-01-01

    HYPOTHESIS: Surgical reintervention after antireflux surgery for gastroesophageal reflux disease is required in 3% to 6% of patients. The subjective outcome after reintervention has been reported in several studies, but objective results after these subsequent operations have rarely been published.

  3. Preoperative predictive model for acute kidney injury after elective cardiac surgery: a prospective multicentre cohort study.

    Science.gov (United States)

    Callejas, Raquel; Panadero, Alfredo; Vives, Marc; Duque, Paula; Echarri, Gemma; Monedero, Pablo

    2018-05-11

    Predictive models of CS-AKI include emergency surgery and patients with haemodynamic instability. Our objective was to evaluate the performance of validated predictive models (Thakar and Demirjian) in elective cardiac surgery and to propose a better score in the case of poor performance. A prospective, multicentre, observational study was designed. Data were collected from 942 patients undergoing cardiac surgery, after excluding emergency surgery and patients with an intraaortic balloon pump. The main outcome measure was CS-AKI defined by the composite of requiring dialysis or doubling baseline creatinine values. Both models showed poor discrimination in elective surgery (Thakar's model, AUROC = 0.57, 95% CI = 0.50-0.64 and Demirjian's model, AUROC= 0.64, 95% CI = 0.58-0.71). We generated a new model whose significant independent predictors were: anaemia, age, hypertension, obesity, congestive heart failure, previous cardiac surgery and type of surgery. It classifies patients with scores 0-3 as low risk ( 8 as high risk (>30%) of developing CS-AKI with a statistically significant correlation (p <0.001). Our model reflects acceptable discriminatory ability (AUC = 0.72, 95% CI = 0.66-0.78) which is significantly better than Thakar and Demirjian's models (p<0.01). We developed a new simple predictive model of CS-AKI in elective surgery based on available preoperative information. Our new model is easy to calculate and can be an effective tool for communicating risk to patients and guiding decision-making in the perioperative period. The study requires external validation.

  4. Risk of autistic disorder after exposure to general anaesthesia and surgery: a nationwide, retrospective matched cohort study.

    Science.gov (United States)

    Ko, Wen-Ru; Huang, Jing-Yang; Chiang, Yi-Chen; Nfor, Oswald Ndi; Ko, Pei-Chieh; Jan, Shiou-Rung; Lung, Chia-Chi; Chang, Hui-Chin; Lin, Long-Yau; Liaw, Yung-Po

    2015-05-01

    Deficits of learning, memory and cognition have been observed in newborn animals exposed to general anaesthetics. However, conclusions from clinical studies conducted in humans to investigate the relationship between anaesthesia and neurodevelopmental disorders have been inconsistent. Autistic disorder is typically recognised earlier than other neurobehavioural disorders. Although certain genes apparently contribute to autistic disorder susceptibility, other factors such as perinatal insults and exposure to neurotoxic agents may play a crucial role in gene-environmental interaction. This study was designed to investigate the association of exposure to general anaesthesia/surgery with autistic disorder. We hypothesised that exposure to general anaesthesia and surgery before 2 years of age is associated with an increased risk of developing autistic disorder. A retrospective matched-cohort study. A medical university. Data from the National Health Insurance Research Database of Taiwan from 2001 to 2010 were analysed. The birth cohort included 114,435 children, among whom 5197 were exposed to general anaesthesia and surgery before the age of 2 years. The 1 : 4 matched controls comprised 20,788 children. The primary endpoint was the diagnosis of autistic disorder after the first exposure to general anaesthesia and surgery. No differences were found in the incidence of autistic disorder between the exposed group (0.96%) and the unexposed controls (0.89%) (P = 0.62). Cox proportional regression showed that the hazard ratio of exposure to general anaesthesia and surgery was 0.93 [95% confidence interval (95% CI) 0.57 to 1.53] after adjusting for potential confounders. Age at first exposure did not influence the risk of autistic disorder. No relationship was found between the total number of exposures and the risk of autistic disorder. Exposure to general anaesthesia and surgery before the age of 2 years age at first exposure and number of exposures were not

  5. Carotid Artery Injury in Anterior Cervical Spine Surgery: Multicenter Cohort Study and Literature Review.

    Science.gov (United States)

    Härtl, Roger; Alimi, Marjan; Abdelatif Boukebir, Mohamed; Berlin, Connor D; Navarro-Ramirez, Rodrigo; Arnold, Paul M; Fehlings, Michael G; Mroz, Thomas E; Riew, K Daniel

    2017-04-01

    Retrospective study and literature review. To provide more comprehensive data about carotid artery injury (CAI) or cerebrovascular accident (CVA) related to anterior cervical spine surgery. We conducted a retrospective, multicenter, case series study involving 21 high-volume surgical centers from the AOSpine North America Clinical Research Network. Medical records of 17 625 patients who went through cervical spine surgery (levels from C2 to C7) between January 1, 2005, and December 31, 2011, were analyzed. Also, we performed a literature review using Medline and PubMed databases. The following terms were used alone, and in combination, to search for relevant articles: cervical, spine, surgery, complication, iatrogenic, carotid artery, injury, cerebrovascular accident, CVA, and carotid stenosis. Among 17 625 patients that were analyzed, no cases were reported to experienced CAI or CVA after cervical spine surgery. Nevertheless, in our PubMed search we found 157 articles, but only 5 articles matched our study objective criteria; 2 cases were reported to present CAI and 3 cases presented CVA. CAI and CVA related to anterior cervical spine surgeries are extremely rare. We were not able to find neither in our retrospective study nor in our literature research a correlation between the type or length of anterior cervical spine procedure with CVA or CAI complications. However, surgeons should be aware of the possibility of vascular complications and minimize intraoperative direct vascular manipulations or retraction. Preoperative screening for underlying vascular pathology and risk factors is also important.

  6. Employment status and sick-leave following obesity surgery: a five-year prospective cohort study.

    Science.gov (United States)

    Andersen, John Roger; Hernæs, Ulrikke J V; Hufthammer, Karl Ove; Våge, Villy

    2015-01-01

    Background. Severe obesity is a risk factor for lower participation in paid work, but whether employment increases and sick leave decreases after obesity surgery is not well documented. Methods. We assessed 224 Norwegian patients with severe obesity (mean age: 40; mean BMI: 49; 61% female) regarding employment status (working versus not working) and the number of days of sick leave during the preceding 12 months, before and five years after obesity surgery (75% follow-up rate). Logistic regression analysis was used to study preoperative predictors of employment status after surgery. Results. There were no change in the employment rate over time (54% versus 58%), but the number of days of sick leave per year was significantly reduced, from a mean of 63 to a mean of 26, and from a median of 36 to a median of 4. Most of this change was attributable to patients with zero days of sick leave, which increased from 25% to 41%. Being female, older, having low education level, receiving disability pension and not being employed before obesity surgery were important risk factors for not being employed after obesity surgery. The type of obesity surgery, BMI and marital status were not useful predictors. Conclusions. Our findings suggest that undergoing obesity surgery is not associated with a higher rate of employment, although it may reduce the number of days of sick leave. Additional interventions are likely needed to influence the employment status of these patients. The significant preoperative predictors of not being employed in this study provide suggestions for further research.

  7. Employment status and sick-leave following obesity surgery: a five-year prospective cohort study

    Directory of Open Access Journals (Sweden)

    John Roger Andersen

    2015-09-01

    Full Text Available Background. Severe obesity is a risk factor for lower participation in paid work, but whether employment increases and sick leave decreases after obesity surgery is not well documented.Methods. We assessed 224 Norwegian patients with severe obesity (mean age: 40; mean BMI: 49; 61% female regarding employment status (working versus not working and the number of days of sick leave during the preceding 12 months, before and five years after obesity surgery (75% follow-up rate. Logistic regression analysis was used to study preoperative predictors of employment status after surgery.Results. There were no change in the employment rate over time (54% versus 58%, but the number of days of sick leave per year was significantly reduced, from a mean of 63 to a mean of 26, and from a median of 36 to a median of 4. Most of this change was attributable to patients with zero days of sick leave, which increased from 25% to 41%. Being female, older, having low education level, receiving disability pension and not being employed before obesity surgery were important risk factors for not being employed after obesity surgery. The type of obesity surgery, BMI and marital status were not useful predictors.Conclusions. Our findings suggest that undergoing obesity surgery is not associated with a higher rate of employment, although it may reduce the number of days of sick leave. Additional interventions are likely needed to influence the employment status of these patients. The significant preoperative predictors of not being employed in this study provide suggestions for further research.

  8. Cardiac-surgery associated acute kidney injury requiring renal replacement therapy. A Spanish retrospective case-cohort study

    Directory of Open Access Journals (Sweden)

    Garcia-Fernandez Nuria

    2009-09-01

    Full Text Available Abstract Background Acute kidney injury is among the most serious complications after cardiac surgery and is associated with an impaired outcome. Multiple factors may concur in the development of this disease. Moreover, severe renal failure requiring renal replacement therapy (RRT presents a high mortality rate. Consequently, we studied a Spanish cohort of patients to assess the risk factors for RRT in cardiac surgery-associated acute kidney injury (CSA-AKI. Methods A retrospective case-cohort study in 24 Spanish hospitals. All cases of RRT after cardiac surgery in 2007 were matched in a crude ratio of 1:4 consecutive patients based on age, sex, treated in the same year, at the same hospital and by the same group of surgeons. Results We analyzed the data from 864 patients enrolled in 2007. In multivariate analysis, severe acute kidney injury requiring postoperative RRT was significantly associated with the following variables: lower glomerular filtration rates, less basal haemoglobin, lower left ventricular ejection fraction, diabetes, prior diuretic treatment, urgent surgery, longer aortic cross clamp times, intraoperative administration of aprotinin, and increased number of packed red blood cells (PRBC transfused. When we conducted a propensity analysis using best-matched of 137 available pairs of patients, prior diuretic treatment, longer aortic cross clamp times and number of PRBC transfused were significantly associated with CSA-AKI. Patients requiring RRT needed longer hospital stays, and suffered higher mortality rates. Conclusion Cardiac-surgery associated acute kidney injury requiring RRT is associated with worse outcomes. For this reason, modifiable risk factors should be optimised and higher risk patients for acute kidney injury should be identified before undertaking cardiac surgery.

  9. Fetal growth in pregnancies conceived after gastric bypass surgery in relation to surgery-to-conception interval: a Danish national cohort study.

    Directory of Open Access Journals (Sweden)

    Lone Nikoline Nørgaard

    Full Text Available OBJECTIVE: To describe early and late fetal growth in pregnancies conceived after gastric bypass surgery in relation to time from surgery to conception of pregnancy. METHODS: National cohort study on 387 Danish women, who had laparoscopic or open gastric bypass surgery prior to a singleton pregnancy in which first trimester screening was performed between January 2008 and June 2011. Data were derived from national registers (Danish National Registry of Patients and Danish National Birth Registry, Pregnancy Complications and Abortion-clinical quality database (PreCAb and the Danish Fetal Medicine Database. Main outcome measures were early and late fetal growth in relation to time from bariatric surgery to conception of the pregnancy. Early fetal growth was expressed as "Fetal Growth Index": the ratio between the estimated number of days from first trimester ultrasound to second trimester ultrasound biometries and the actual calender time elapsed in days. Late fetal growth was expressed as the observed versus expected birthweight according to gestational age (GA. RESULTS: The surgery-to-conception interval ranged from 3 to 1851 days with a mean value of 502 (SD, 351 days. The mean "fetal growth index" was 0.99 (SD, 0.02 days/day and thus significantly lower than in the background population (mean, 1.04 (SD, 0.09 days/day, p<0.0001. The proportion of infants being small for gestational age was 18.8% and the proportion of large for gestational age infants was 6.7%. The correlation coefficients between surgery-to-conception time and "fetal growth index" and birthweight according to GA were 0.01 (p = 0.8 and 0.04 (p = 0.4, respectively. CONCLUSION: Fetal growth index was lower than reported in the background population. No correlation was found between the surgery-to-conception interval and early or late fetal growth in pregnancies conceived after gastric bypass surgery.

  10. Early career choices and successful career progression in surgery in the UK: prospective cohort studies

    Directory of Open Access Journals (Sweden)

    Richards Jennifer MJ

    2010-11-01

    Full Text Available Abstract Background Changes to the structure of medical training worldwide require doctors to decide on their career specialty at an increasingly early stage after graduation. We studied trends in career choices for surgery, and the eventual career destinations, of UK graduates who declared an early preference for surgery. Methods Postal questionnaires were sent, at regular time intervals after qualification, to all medical qualifiers from all UK medical schools in selected qualification years between 1974 and 2005. They were sent in the first year after qualification, at year three and five years after qualification, and at longer time intervals thereafter. Results Responses were received from 27 749 of 38 280 doctors (73% at year one, 23 468 of 33151 (71% at year three, and 17 689 of 24 870 (71% at year five. Early career preferences showed that surgery has become more popular over the past two decades. Looking forward from early career choice, 60% of respondents (64% of men, 48% of women with a first preference for a surgical specialty at year one eventually worked in surgery (p Conclusions Surgery is a popular specialty choice in the UK. The great majority of doctors who progressed in a surgical career made an early and definitive decision to do so.

  11. Impact of Early Valve Surgery on Outcome of Staphylococcus aureus Prosthetic Valve Infective Endocarditis: Analysis in the International Collaboration of Endocarditis–Prospective Cohort Study

    OpenAIRE

    Chirouze, Catherine; Alla, François; Fowler, Vance G.; Sexton, Daniel J.; Corey, G. Ralph; Chu, Vivian H.; Wang, Andrew; Erpelding, Marie-Line; Durante-Mangoni, Emanuele; Fernández-Hidalgo, Nuria; Giannitsioti, Efthymia; Hannan, Margaret M.; Lejko-Zupanc, Tatjana; Miró, José M.; Muñoz, Patricia

    2014-01-01

    Using appropriate analytical methods to examine data from the International Collaboration on Endocarditis–Prospective Cohort Study, we found that early valve surgery was not associated with reduced 1-year mortality in Staphylococcus aureus prosthetic valve infective endocarditis.

  12. Multicentre prospective cohort study of body mass index and postoperative complications following gastrointestinal surgery

    OpenAIRE

    Drake, T. M.; Nepogodiev, D.; Chapman, S. J.; Glasbey, J. C.; Khatri, C.; Kong, C. Y.; Claireaux, H. A.; Bath, M. F.; Mohan, M.; McNamee, L.; Kelly, M.; Mitchell, H.; Fitzgerald, J. E.; Harrison, E. M.; Bhangu, A.

    2016-01-01

    BackgroundThere is currently conflicting evidence surrounding the effects of obesity on postoperative outcomes. Previous studies have found obesity to be associated with adverse events, but others have found no association. The aim of this study was to determine whether increasing body mass index (BMI) is an independent risk factor for development of major postoperative complications.MethodsThis was a multicentre prospective cohort study across the UK and Republic of Ireland. Consecutive pati...

  13. Influences on choice of surgery as a career: a study of consecutive cohorts in a medical school.

    Science.gov (United States)

    Sobral, Dejano T

    2006-06-01

    To examine the differential impact of person-based and programme-related features on graduates' dichotomous choice between surgical or non-surgical field specialties for first-year residency. A 10-year cohort study was conducted, following 578 students (55.4% male) who graduated from a university medical school during 1994-2003. Data were collected as follows: at the beginning of medical studies, on career preference and learning frame; during medical studies, on academic achievement, cross-year peer tutoring and selective clinical traineeship, and at graduation, on the first-year residency selected. Contingency and logistic regression analyses were performed, with graduates grouped by the dichotomous choice of surgery or not. Overall, 23% of graduates selected a first-year residency in surgery. Seven time-steady features related to this choice: male sex, high self-confidence, option of surgery at admission, active learning style, preference for surgery after Year 1, peer tutoring on clinical surgery, and selective training in clinical surgery. Logistic regression analysis, including all features, predicted 87.1% of the graduates' choices. Male sex, updated preference, peer tutoring and selective training were the most significant predictors in the pathway to choice. The relative roles of person-based and programme-related factors in the choice process are discussed. The findings suggest that for most students the choice of surgery derives from a temporal summation of influences that encompass entry and post-entry factors blended in variable patterns. It is likely that sex-unbiased peer tutoring and selective training supported the students' search process for personal compatibility with specialty-related domains of content and process.

  14. Mental illness in bariatric surgery: A cohort study from the PORTAL network.

    Science.gov (United States)

    Fisher, David; Coleman, Karen J; Arterburn, David E; Fischer, Heidi; Yamamoto, Ayae; Young, Deborah R; Sherwood, Nancy E; Trinacty, Connie Mah; Lewis, Kristina H

    2017-05-01

    To compare bariatric surgery outcomes according to preoperative mental illness category. Electronic health record data from several US healthcare systems were used to compare outcomes of four groups of patients who underwent bariatric surgery in 2012 and 2013. These included the following: people with (1) no mental illness, (2) mild-to-moderate depression or anxiety, (3) severe depression or anxiety, and (4) bipolar, psychosis, or schizophrenia spectrum disorders. Groups were compared on weight loss trajectory using generalized estimating equations using B-spline bases and on all-cause emergency department visits and hospital days using zero-inflated Poisson and negative binomial regression up to 2 years after surgery. Models were adjusted for demographic and health covariates, including baseline healthcare use. Among 8,192 patients, mean age was 44.3 (10.7) years, 79.9% were female, and 45.6% were white. Fifty-seven percent had preoperative mental illness. There were no differences between groups for weight loss, but patients with preoperative severe depression or anxiety or bipolar, psychosis, or schizophrenia spectrum disorders had higher follow-up levels of emergency department visits and hospital days compared to those with no mental illness. In this multicenter study, mental illness was not associated with differential weight loss after bariatric surgery, but additional research could focus on reducing acute care use among these patients. © 2017 The Obesity Society.

  15. Costs and Outcomes of Increasing Access to Bariatric Surgery: Cohort Study and Cost-Effectiveness Analysis Using Electronic Health Records.

    Science.gov (United States)

    Gulliford, Martin C; Charlton, Judith; Prevost, Toby; Booth, Helen; Fildes, Alison; Ashworth, Mark; Littlejohns, Peter; Reddy, Marcus; Khan, Omar; Rudisill, Caroline

    2017-01-01

    To estimate costs and outcomes of increasing access to bariatric surgery in obese adults and in population subgroups of age, sex, deprivation, comorbidity, and obesity category. A cohort study was conducted using primary care electronic health records, with linked hospital utilization data, for 3,045 participants who underwent bariatric surgery and 247,537 participants who did not undergo bariatric surgery. Epidemiological analyses informed a probabilistic Markov model to compare bariatric surgery, including equal proportions with adjustable gastric banding, gastric bypass, and sleeve gastrectomy, with standard nonsurgical management of obesity. Outcomes were quality-adjusted life-years (QALYs) and net monetary benefits at a threshold of £30,000 per QALY. In a UK population of 250,000 adults, there may be 7,163 people with morbid obesity including 1,406 with diabetes. The immediate cost of 1,000 bariatric surgical procedures is £9.16 million, with incremental discounted lifetime health care costs of £15.26 million (95% confidence interval £15.18-£15.36 million). Patient-years with diabetes mellitus will decrease by 8,320 (range 8,123-8,502). Incremental QALYs will increase by 2,142 (range 2,032-2,256). The estimated cost per QALY gained is £7,129 (range £6,775-£7,506). Net monetary benefits will be £49.02 million (range £45.72-£52.41 million). Estimates are similar for subgroups of age, sex, and deprivation. Bariatric surgery remains cost-effective if the procedure is twice as costly, or if intervention effect declines over time. Diverse obese individuals may benefit from bariatric surgery at acceptable cost. Bariatric surgery is not cost-saving, but increased health care costs are exceeded by health benefits to obese individuals. Copyright © 2017 International Society for Pharmacoeconomics and Outcomes Research (ISPOR). Published by Elsevier Inc. All rights reserved.

  16. Effect of socioeconomic deprivation on waiting time for cardiac surgery: retrospective cohort study

    Science.gov (United States)

    Pell, Jill P; Pell, Alastair C H; Norrie, John; Ford, Ian; Cobbe, Stuart M

    2000-01-01

    Objective To determine whether the priority given to patients referred for cardiac surgery is associated with socioeconomic status. Design Retrospective study with multivariate logistic regression analysis of the association between deprivation and classification of urgency with allowance for age, sex, and type of operation. Multivariate linear regression analysis was used to determine association between deprivation and waiting time within each category of urgency, with allowance for age, sex, and type of operation. Setting NHS waiting lists in Scotland. Participants 26 642 patients waiting for cardiac surgery, 1 January 1986 to 31 December 1997. Main outcome measures Deprivation as measured by Carstairs deprivation category. Time spent on NHS waiting list. Results Patients who were most deprived tended to be younger and were more likely to be female. Patients in deprivation categories 6 and 7 (most deprived) waited about three weeks longer for surgery than those in category 1 (mean difference 24 days, 95% confidence interval 15 to 32). Deprived patients had an odds ratio of 0.5 (0.46 to 0.61) for having their operations classified as urgent compared with the least deprived, after allowance for age, sex, and type of operation. When urgent and routine cases were considered separately, there was no significant difference in waiting times between the most and least deprived categories. Conclusions Socioeconomically deprived patients are thought to be more likely to develop coronary heart disease but are less likely to be investigated and offered surgery once it has developed. Such patients may be further disadvantaged by having to wait longer for surgery because of being given lower priority. PMID:10617517

  17. Cumulative occupational shoulder exposures and surgery for subacromial impingement syndrome: a nationwide Danish cohort study.

    Science.gov (United States)

    Dalbøge, Annett; Frost, Poul; Andersen, Johan Hviid; Svendsen, Susanne Wulff

    2014-11-01

    The primary aim was to examine exposure-response relationships between cumulative occupational shoulder exposures and surgery for subacromial impingement syndrome (SIS), and to compare sex-specific exposure-response relationships. The secondary aim was to examine the time window of relevant exposures. We conducted a nationwide register study of all persons born in Denmark (1933-1977), who had at least 5 years of full-time employment. In the follow-up period (2003-2008), we identified first-time events of surgery for SIS. Cumulative exposure estimates for a 10-year exposure time window with a 1-year lag time were obtained by linking occupational codes with a job exposure matrix. The exposure estimates were expressed as, for example, arm-elevation-years in accordance with the pack-year concept of tobacco consumption. We used a multivariable logistic regression technique equivalent to discrete survival analysis. The adjusted OR (ORadj) increased to a maximum of 2.1 for arm-elevation-years, repetition-years and force-years, and to 1.5 for hand-arm-vibration-years. Sex-specific exposure-response relationships were similar for men and women, when assessed using a relative risk scale. The ORadj increased gradually with the number of years contributing to the cumulative exposure estimates. The excess fraction was 24%. Cumulative occupational shoulder exposures carried an increase in risk of surgery for SIS with similar exposure-response curves for men and women. The risk of surgery for SIS increased gradually, when the period of exposure assessment was extended. In the general working population, a substantial fraction of all first-time operations for SIS could be related to occupational exposures. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  18. Effects of decompressive cervical surgery on blood pressure in cervical spondylosis patients with hypertension: a time series cohort study.

    Science.gov (United States)

    Liu, Hong; Wang, Hai-Bo; Wu, Lin; Wang, Shi-Jun; Yang, Ze-Chuan; Ma, Run-Yi; Reilly, Kathleen H; Yan, Xiao-Yan; Ji, Ping; Wu, Yang-feng

    2016-01-06

    Patients with cervical spondylosis myelopathy (CSM) and complicated with hypertension are often experiencing a blood pressure decrease after taking cervical decompressive surgery in clinical observations, but how this blood pressure reduction is associated with the surgery, which cut cervical sympathetic nervous, has never been rigorously assessed. Thus, the purpose of this study is to investigate the effect of cervical decompressive surgery on blood pressure among CSM patients with hypertension. The study will be a time series cohort study. Fifty eligible patients will be selected consecutively from the Peking University First Hospital. Two 24-h ambulatory blood pressure measurement (ABPM) will be taken before the surgery, apart by at least 3 days. The patients will be followed up for another two ABPMs at 1 and 3 months after the surgery. We will recruit subjects with cervical spondylosis myelopathy meeting operation indications and scheduled for receiving cervical decompressive surgery, aged 18-84 years, have a history of hypertension or office systolic blood pressure ≥140 mmHg on initial screening, and willing to participate in the study and provide informed consent. Exclusion criteria includes a history of known secondary hypertension, visual analogue scale (VAS) score ≥4, and unable to comply with study due to severe psychosis. The change in systolic ABPs over the four times will be analyzed to observe the overall pattern of the blood pressure change in relation to the surgery, but the primary analysis will be the comparison of systolic ABP between the 2(nd) and 3(rd), 4(th) measurements (before and after the surgery). We will also calculate the regression-to-the-mean adjusted changes in systolic ABP as sensitivity analysis. Secondary endpoints are the changes in 24 h ABPM diastolic blood pressure, blood pressure control status, the use and dose adjustment of antihypertensive medication, and the incidence of operative complications. Primary outcome

  19. Bariatric Surgery in the United Kingdom: A Cohort Study of Weight Loss and Clinical Outcomes in Routine Clinical Care

    Science.gov (United States)

    Douglas, Ian J.; Bhaskaran, Krishnan; Batterham, Rachel L.; Smeeth, Liam

    2015-01-01

    Background Bariatric surgery is becoming a more widespread treatment for obesity. Comprehensive evidence of the long-term effects of contemporary surgery on a broad range of clinical outcomes in large populations treated in routine clinical practice is lacking. The objective of this study was to measure the association between bariatric surgery, weight, body mass index, and obesity-related co-morbidities. Methods and Findings This was an observational retrospective cohort study using data from the United Kingdom Clinical Practice Research Datalink. All 3,882 patients registered in the database and with bariatric surgery on or before 31 December 2014 were included and matched by propensity score to 3,882 obese patients without surgery. The main outcome measures were change in weight and body mass index over 4 y; incident diagnoses of type 2 diabetes mellitus (T2DM), hypertension, angina, myocardial infarction (MI), stroke, fractures, obstructive sleep apnoea, and cancer; mortality; and resolution of hypertension and T2DM. Weight measures were available for 3,847 patients between 1 and 4 mo, 2,884 patients between 5 and 12 mo, and 2,258 patients between 13 and 48 mo post-procedure. Bariatric surgery patients exhibited rapid weight loss for the first four postoperative months, at a rate of 4.98 kg/mo (95% CI 4.88–5.08). Slower weight loss was sustained to the end of 4 y. Gastric bypass (6.56 kg/mo) and sleeve gastrectomy (6.29 kg/mo) were associated with greater initial weight reduction than gastric banding (2.77 kg/mo). Protective hazard ratios (HRs) were detected for bariatric surgery for incident T2DM, 0.68 (95% CI 0.55–0.83); hypertension, 0.35 (95% CI 0.27–0.45); angina, 0.59 (95% CI 0.40–0.87);MI, 0.28 (95% CI 0.10–0.74); and obstructive sleep apnoea, 0.55 (95% CI 0.40–0.87). Strong associations were found between bariatric surgery and the resolution of T2DM, with a HR of 9.29 (95% CI 6.84–12.62), and between bariatric surgery and the resolution of

  20. Risk stratification by pre-operative cardiopulmonary exercise testing improves outcomes following elective abdominal aortic aneurysm surgery: a cohort study.

    Science.gov (United States)

    Goodyear, Stephen J; Yow, Heng; Saedon, Mahmud; Shakespeare, Joanna; Hill, Christopher E; Watson, Duncan; Marshall, Colette; Mahmood, Asif; Higman, Daniel; Imray, Christopher He

    2013-05-19

    In 2009, the NHS evidence adoption center and National Institute for Health and Care Excellence (NICE) published a review of the use of endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms (AAAs). They recommended the development of a risk-assessment tool to help identify AAA patients with greater or lesser risk of operative mortality and to contribute to mortality prediction.A low anaerobic threshold (AT), which is a reliable, objective measure of pre-operative cardiorespiratory fitness, as determined by pre-operative cardiopulmonary exercise testing (CPET) is associated with poor surgical outcomes for major abdominal surgery. We aimed to assess the impact of a CPET-based risk-stratification strategy upon perioperative mortality, length of stay and non-operative costs for elective (open and endovascular) infra-renal AAA patients. A retrospective cohort study was undertaken. Pre-operative CPET-based selection for elective surgical intervention was introduced in 2007. An anonymized cohort of 230 consecutive infra-renal AAA patients (2007 to 2011) was studied. A historical control group of 128 consecutive infra-renal AAA patients (2003 to 2007) was identified for comparison.Comparative analysis of demographic and outcome data for CPET-pass (AT ≥ 11 ml/kg/min), CPET-fail (AT 11 ml/kg/min was associated with reduced perioperative mortality (open cases only), LOS, survival and inpatient costs (open and endovascular repair) for elective infra-renal AAA surgery.

  1. [Incidence of postoperative venous thromboembolism after thoracic surgery and its characteristic: a single center, prospective cohort study].

    Science.gov (United States)

    Song, C F; Li, H; Tian, B; Chen, S; Miao, J B; Fu, Y L; You, B; Chen, Q R; Li, T; Hu, X X; Zhang, W Q; Hu, B

    2018-04-01

    Objective: To evaluate the incidence of postoperative venous thromboembolism (VTE) after thoracic surgery and its characteristic. Methods: This was a single-center, prospective cohort study. Patients undergoing major thoracic surgeries between July 2016 and March 2017 at Department of Thoracic Surgery, Beijing Chaoyang Hospital Affiliated to Capital Medical University were enrolled in this study. Besides the routine examination, all patients were screened for deep venous thrombosis (DVT) by using noninvasive duplex lower-extremity ultrasonography after surgery. CT pulmonary angiography (CTPA) was carried out if patients had one of the following conditions including typical symptoms of PE, high Caprini score (>9 points) or new diagnosed postoperative DVT. Caprini risk assessment model was used to detect high risk patients. No patients received any prophylaxis of VTE before surgery. Further data was analyzed for identifying the incidence of postoperative VTE. The t -test, χ 2 test or Wilcoxon rank-sum test was used to analyze the quantitative data and classification data, respectively. Results: Totally 345 patients who undergoing major thoracic surgery were enrolled in this study including 145 benign diseases and 200 malignant diseases.There were 207 male and 138 female, aging from 15 to 85 years. Surgery procedures included 285 lung surgeries, 27 esophagectomies, 22 mediastinal surgeries and 11 other procedures. The overall incidence of VTE was 13.9% (48 of 345) after major thoracic surgery including 39 patients with newly diagnosed DVT (81.2%), 1 patient with PE (2.1%) and 8 patients with DVT+ PE (16.7%). The median time of VTE detected was 4.5 days postoperative. There were 89.6% (43/48) VTE cases diagnosed in 1 week. The incidence of VTE was 9.0% in patients with benign diseases, while 17.5% in malignant diseases (χ 2 =5.112, P patients with pulmonary diseases was 12.6%, among that, in patients with lung cancer and benign lung diseases was 16.4% and 7.5 % (χ 2

  2. Early symptoms in the prodromal phase of delirium: a prospective cohort study in elderly patients undergoing hip surgery.

    Science.gov (United States)

    de Jonghe, Jos F M; Kalisvaart, Kees J; Dijkstra, Marty; van Dis, Huib; Vreeswijk, Ralph; Kat, Martin G; Eikelenboom, Piet; van der Ploeg, Tjeerd; van Gool, Willem A

    2007-02-01

    The authors investigated prodromal delirium symptoms in elderly patients undergoing hip surgery. This was a prospective cohort study in the setting of a large medical school-affiliated general hospital in Alkmaar, The Netherlands. Participants were patients undergoing hip surgery aged 70 and older at risk for delirium. Before surgery, patients were randomized to low-dose prophylactic haloperidol treatment or placebo. Daily assessments were based on patient interviews with the Mini-Mental State Examination and Digit Span test. The Delirium Rating Scale-Revised (DRS-R-98) was used to measure early symptoms during the prodromal phase before the onset of delirium. Data of 66 patients with delirium were compared with those of 35 at-risk patients who did not develop delirium: 14 of 66 patients (21%) had delirium on the day of surgery or early the day after, 32 of 66 (48%) on the second day, 14 of 66 on the third, and six of 66 (9%) on the fourth. The average DRS-R-98 total scores on day -4 to day -1 before delirium were 1.9 for the comparison group patients and 5.0, 4.3, 5.8, and 10.7 for patients with postoperative delirium. Multivariate analysis showed that the early symptoms memory impairments, incoherence, disorientation, and underlying somatic illness predict delirium. Most elderly patients undergoing hip surgery with postoperative delirium already have early symptoms in the prodromal phase of delirium. These findings are potentially useful for screening purposes and for optimizing prevention strategies targeted at reducing the incidence of postoperative delirium.

  3. Health-Related Quality of Life, Cachexia and Overall Survival After Major Upper Abdominal Surgery: A Prospective Cohort Study.

    Science.gov (United States)

    Aahlin, E K; Tranø, G; Johns, N; Horn, A; Søreide, J A; Fearon, K C; Revhaug, A; Lassen, K

    2017-03-01

    Major upper abdominal surgery is often associated with reduced health-related quality of life and reduced survival. Patients with upper abdominal malignancies often suffer from cachexia, represented by preoperative weight loss and sarcopenia (low skeletal muscle mass) and this might affect both health-related quality of life and survival. We aimed to investigate how health-related quality of life is affected by cachexia and how health-related quality of life relates to long-term survival after major upper abdominal surgery. From 2001 to 2006, 447 patients were included in a Norwegian multicenter randomized controlled trial in major upper abdominal surgery. In this study, six years later, these patients were analyzed as a single prospective cohort and survival data were retrieved from the National Population Registry. Cachexia was derived from patient-reported preoperative weight loss and sarcopenia as assessed from computed tomography images taken within three months preoperatively. In the original trial, self-reported health-related quality of life was assessed preoperatively at trial enrollment and eight weeks postoperatively with the health-related quality of life questionnaire Short Form 36. A majority of the patients experienced improved mental health-related quality of life and, to a lesser extent, deteriorated physical health-related quality of life following surgery. There was a significant association between preoperative weight loss and reduced physical health-related quality of life. No association between sarcopenia and health-related quality of life was observed. Overall survival was significantly associated with physical health-related quality of life both pre- and postoperatively, and with postoperative mental health-related quality of life. The association between health-related quality of life and survival was particularly strong for postoperative physical health-related quality of life. Postoperative physical health-related quality of life

  4. Health locus of control in patients undergoing coronary artery surgery - changes and associated outcomes: a seven-year cohort study.

    Science.gov (United States)

    Rideout, Andrew; Tolmie, Elizabeth; Lindsay, Grace

    2017-01-01

    Health locus of control is a measure of an individual's beliefs in factors that are thought to determine health experiences. Scores are generated and form a graduated linear scale from external to internal control, with respect to their views on health causality. Health locus of control has been considered to be a relatively stable entity. However, it is not clear if this status changes in the advent of serious health challenges, such as coronary artery bypass graft surgery. The aim of this study is to explore the variability of health locus of control and its association with postoperative health in this context. In a longitudinal cohort study of patients undergoing coronary artery bypass graft surgery, a purposive sample ( n=215) were recruited from the waiting list and followed up postoperatively, at approximately one year and seven years later. Patients undergoing coronary artery bypass graft surgery demonstrated marked fluctuations in health locus of control in their peri-operative and rehabilitative phases. Mean health locus of control became more external (often associated with poorer outcomes) peri-operatively, and more internal (generally associated with better health outcomes) in the rehabilitative period. Health locus of control scores were shown to be changeable during a major health care intervention, with possible consequences for patient outcomes and care needs. The significant health belief upheaval demonstrated in this cohort should be considered in assessing patients preoperatively, and managed as part of the patients' clinical journey by both acute and rehabilitation staff. It is likely to have particular importance in individualised assessment and management of future prevention advice for patients.

  5. Surgery during holiday periods and prognosis in oesophageal cancer: a population-based nationwide Swedish cohort study.

    Science.gov (United States)

    Markar, Sheraz R; Wahlin, Karl; Mattsson, Fredrik; Lagergren, Pernilla; Lagergren, Jesper

    2016-09-06

    Previous studies indicate an increased short-term and long-term mortality from major cancer surgery performed towards the end of the working week or during the weekend. We hypothesised that the prognosis after major cancer surgery is also negatively influenced by surgery conducted during holiday periods. Population-based nationwide Swedish cohort study. Patients undergoing oesophagectomy for oesophageal cancer between 1987 and 2010. Among 1820 included patients, 206 (11.3%) and 373 (20.5%) patients were operated on during narrow and wide holiday periods, respectively. Narrow (7 weeks) and wide (14 weeks) Swedish holiday periods. 90-day all-cause, 5-year all-cause and 5-year disease-specific mortality. Narrow holiday period did not increase all-cause 90-day (HR=0.84, 95% CI 0.53 to 1.33), all-cause 5-year (HR=1.01, 95% CI 0.85 to 1.21) or disease-specific 5-year mortality (HR=1.04, 95% CI 0.87 to 1.26). Similarly, wide holiday period did not increase the risk of 90-day (HR=0.79, 95% CI 0.55 to 1.13), all-cause 5-year (HR=0.96, 95% CI 0.84 to 1.1) or disease-specific 5-year mortality (HR=1.03, 95% CI 0.89 to 1.19). No measurable effects of holiday periods on short-term or longer term mortality following surgery for oesophageal cancer were observed in this population-based study, indicating that an adequate surgical experience was maintained during holiday periods. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/

  6. Association of Hospital-level Neuraxial Anesthesia Use for Hip Fracture Surgery with Outcomes: A Population-based Cohort Study.

    Science.gov (United States)

    McIsaac, Daniel I; Wijeysundera, Duminda N; Huang, Allen; Bryson, Gregory L; van Walraven, Carl

    2018-03-01

    There is consistent and significant variation in neuraxial anesthesia use for hip fracture surgery across jurisdictions. We measured the association of hospital-level utilization of neuraxial anesthesia, independent of patient-level use, with 30-day survival (primary outcome) and length of stay and costs (secondary outcomes). We conducted a population-based cohort study using linked administrative data in Ontario, Canada. We identified all hip fracture patients more than 65 yr of age from 2002 to 2014. For each patient, we measured the proportion of hip fracture patients at their hospital who received neuraxial anesthesia in the year before their surgery. Multilevel, multivariable regression was used to measure the association of log-transformed hospital-level neuraxial anesthetic-use proportion with outcomes, controlling for patient-level anesthesia type and confounders. Of 107,317 patients, 57,080 (53.2%) had a neuraxial anesthetic; utilization varied from 0 to 100% between hospitals. In total, 9,122 (8.5%) of patients died within 30 days of surgery. Survival independently improved as hospital-level neuraxial use increased (P = 0.009). Primary and sensitivity analyses demonstrated that most of the survival benefit was realized with increase in hospital-level neuraxial use above 20 to 25%; there did not appear to be a substantial increase in survival above this point. No significant associations between hospital neuraxial anesthesia-use and other outcomes existed. Hip fracture surgery patients at hospitals that use more than 20 to 25% neuraxial anesthesia have improved survival independent of patient-level anesthesia type and other confounders. The underlying causal mechanism for this association requires a prospective study to guide improvements in perioperative care and outcomes of hip fracture patients. An online visual overview is available for this article at http://links.lww.com/ALN/B634.

  7. Do we at all need surgery to treat thrombosed external hemorrhoids? Results of a prospective cohort study

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    Ole Gebbensleben

    2009-06-01

    Full Text Available Ole Gebbensleben1, York Hilger2, Henning Rohde31Park-Klinik Berlin-Weissensee, Berlin, Germany; 2Institut für Biostatistik, Freiburg im Breisgau, Germany; 3Praxis für Endoskopie und Proktologie, Berlin, GermanyBackground: It is unknown whether surgery is the gold standard for therapy of thrombosed external hemorrhoids (TEH.Methods: A prospective cohort study of 72 adults with TEH was conducted: no surgery, no sitz baths but gentle dry cleaning with smooth toilet paper after defecation. Follow-up information was collected six months after admission by questionnaire.Results: Despite our strict conservative management policy 62.5% (45/72 of patients (95% confidence interval [CI]: 51.0–74.0 described themselves as “healed” or “ameliorated”, and 61.1% (44/72, 95% CI: 49.6–72.6 found our management policy as “valuable to test” or “impracticable”. 13.9% (10/72, 95% CI: 5.7–22.1 of patients suspected to have recurrences. 4.2% did not know. Twenty-two of the 48 responding patients reported symptoms such as itching (18.8%, soiling (12.5%, pricking (10.4%, or a sore bottom (8.3% once a month (59.1%, 13/22, once a week (27.3%, 6/22, or every day (13.6%, 3/22. Conclusions: The dictum that surgery is the gold standard for therapy for TEH should be checked by randomized controlled trials.Keywords: hemorrhoids, acute hemorrhoidal disease, thrombosed external hemorrhoid, perianal thrombosis, conservative therapy, surgery

  8. Effect of bariatric surgery on adiposity and metabolic profiles: A prospective cohort study in Middle-Eastern patients.

    Science.gov (United States)

    Mazidi, Mohsen; Rezaie, Peyman; Jangjoo, Ali; Tavassoli, Alireza; Rajabi, Mohammad Taghi; Kengne, Andre Pascal; Nematy, Mohsen

    2017-07-15

    To investigate changes in adiposity and cardio-metabolic risk profile following Roux-en-Y gastric bypass in patients of Middle Eastern ethnicity with severe obesity. This prospective cohort study involved 92 patients who met the indications of bariatric surgery. Post-procedure markers of obesity and cardiometabolic profile were monitored regularly for a year. Mean body mass index decreased by 29.5% from 41.9 to 29.5 kg/m 2 between baseline and 12-mo follow-up, while mean fat mass decreased by 45.9% from 64.2 kg to 34.7 kg. An improvement was also observed in the gluco-metabolic profile with both fasting glucose and HbA1c substantially decreasing ( P Middle Eastern ethnicity.

  9. The surgical safety checklist and patient outcomes after surgery: a prospective observational cohort study, systematic review and meta-analysis.

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    Abbott, T E F; Ahmad, T; Phull, M K; Fowler, A J; Hewson, R; Biccard, B M; Chew, M S; Gillies, M; Pearse, R M

    2018-01-01

    The surgical safety checklist is widely used to improve the quality of perioperative care. However, clinicians continue to debate the clinical effectiveness of this tool. Prospective analysis of data from the International Surgical Outcomes Study (ISOS), an international observational study of elective in-patient surgery, accompanied by a systematic review and meta-analysis of published literature. The exposure was surgical safety checklist use. The primary outcome was in-hospital mortality and the secondary outcome was postoperative complications. In the ISOS cohort, a multivariable multi-level generalized linear model was used to test associations. To further contextualise these findings, we included the results from the ISOS cohort in a meta-analysis. Results are reported as odds ratios (OR) with 95% confidence intervals. We included 44 814 patients from 497 hospitals in 27 countries in the ISOS analysis. There were 40 245 (89.8%) patients exposed to the checklist, whilst 7508 (16.8%) sustained ≥1 postoperative complications and 207 (0.5%) died before hospital discharge. Checklist exposure was associated with reduced mortality [odds ratio (OR) 0.49 (0.32-0.77); P<0.01], but no difference in complication rates [OR 1.02 (0.88-1.19); P=0.75]. In a systematic review, we screened 3732 records and identified 11 eligible studies of 453 292 patients including the ISOS cohort. Checklist exposure was associated with both reduced postoperative mortality [OR 0.75 (0.62-0.92); P<0.01; I 2 =87%] and reduced complication rates [OR 0.73 (0.61-0.88); P<0.01; I 2 =89%). Patients exposed to a surgical safety checklist experience better postoperative outcomes, but this could simply reflect wider quality of care in hospitals where checklist use is routine. Copyright © 2017 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.

  10. Quality of life improvement in patients with Hashimoto thyroiditis and other goiters after surgery: A prospective cohort study.

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    Zivaljevic, Vladan R; Bukvic Bacotic, Branka R; Sipetic, Sandra B; Stanisavljevic, Dejana M; Maksimovic, Jadranka M; Diklic, Aleksandar D; Paunovic, Ivan R

    2015-09-01

    Hashimoto thyroiditis (HT) and other benign goiters (BG) might influence patients' quality of life (QoL). The objective of this study was to analyze influence of surgery on these patients' QoL. A prospective cohort study was conducted. The ThyPRO questionnaire was used in the QoL assessment. The HT patients experienced significantly worse hypothyroid symptoms and sex life than the BG patients. The improvement in QoL in the BG patients was significant after surgery in all ThyPRO domains. In the HT patients, the improvement was significant in all but two domains, eye symptoms and cognitive impairment. The best improvement in both groups was in overall QoL. None of the patients developed permanent consequences. The QoL of HT and BG patients is impaired and improves significantly after surgical treatment. Thyroidectomy should be considered as a treatment option in the HT patients more often as in the BG patients. Copyright © 2015 IJS Publishing Group Limited. Published by Elsevier Ltd. All rights reserved.

  11. Incidence and prognostic factors for postoperative frozen shoulder after shoulder surgery : a prospective cohort study

    NARCIS (Netherlands)

    Koorevaar, Rinco C. T.; van't Riet, Esther; Ipskamp, Marcel; Bulstra, Sjoerd K.

    Frozen shoulder is a potential complication after shoulder surgery. It is a clinical condition that is often associated with marked disability and can have a profound effect on the patient's quality of life. The incidence, etiology, pathology and prognostic factors of postoperative frozen shoulder

  12. The Association of Frailty With Outcomes and Resource Use After Emergency General Surgery: A Population-Based Cohort Study.

    Science.gov (United States)

    McIsaac, Daniel I; Moloo, Husein; Bryson, Gregory L; van Walraven, Carl

    2017-05-01

    Older patients undergoing emergency general surgery (EGS) experience high rates of postoperative morbidity and mortality. Studies focused primarily on elective surgery indicate that frailty is an important predictor of adverse outcomes in older surgical patients. The population-level effect of frailty on EGS is poorly described. Therefore, our objective was to measure the association of preoperative frailty with outcomes in a population of older patients undergoing EGS. We created a population-based cohort study using linked administrative data in Ontario, Canada, that included community-dwelling individuals aged >65 years having EGS. Our main exposure was preoperative frailty, as defined by the Johns Hopkins Adjusted Clinical Groups frailty-defining diagnoses indicator. The Adjusted Clinical Groups frailty-defining diagnoses indicator is a binary variable that uses 12 clusters of frailty-defining diagnoses. Our main outcome measures were 1-year all-cause mortality (primary), intensive care unit admission, length of stay, institutional discharge, and costs of care (secondary). Of 77,184 patients, 19,779 (25.6%) were frail. Death within 1 year occurred in 6626 (33.5%) frail patients compared with 11,366 (19.8%) nonfrail patients. After adjustment for sociodemographic and surgical confounders, this resulted in a hazard ratio of 1.29 (95% confidence interval [CI] 1.25-1.33). The risk of death for frail patients varied significantly across the postoperative period and was particularly high immediately after surgery (hazard ratio on postoperative day 1 = 23.1, 95% CI 22.3-24.1). Frailty was adversely associated with all secondary outcomes, including a 5.82-fold increase in the adjusted odds of institutional discharge (95% CI 5.53-6.12). After EGS, frailty is associated with increased rates of mortality, institutional discharge, and resource use. Strategies that might improve perioperative outcomes in frail EGS patients need to be developed and tested.

  13. Early versus late Gamma Knife radiosurgery following transsphenoidal surgery for nonfunctioning pituitary macroadenomas: a multicenter matched-cohort study.

    Science.gov (United States)

    Pomeraniec, I Jonathan; Kano, Hideyuki; Xu, Zhiyuan; Nguyen, Brandon; Siddiqui, Zaid A; Silva, Danilo; Sharma, Mayur; Radwan, Hesham; Cohen, Jonathan A; Dallapiazza, Robert F; Iorio-Morin, Christian; Wolf, Amparo; Jane, John A; Grills, Inga S; Mathieu, David; Kondziolka, Douglas; Lee, Cheng-Chia; Wu, Chih-Chun; Cifarelli, Christopher P; Chytka, Tomas; Barnett, Gene H; Lunsford, L Dade; Sheehan, Jason P

    2017-10-27

    OBJECTIVE Gamma Knife radiosurgery (GKRS) is frequently used to treat residual or recurrent nonfunctioning pituitary macroadenomas. There is no consensus as to whether GKRS should be used early after surgery or if radiosurgery should be withheld until there is evidence of imaging-defined progression of tumor. Given the high incidence of adenoma progression after subtotal resection over time, the present study intended to evaluate the effect of timing of radiosurgery on outcome. METHODS This is a multicenter retrospective review of patients with nonfunctioning pituitary macroadenomas who underwent transsphenoidal surgery followed by GKRS from 1987 to 2015 at 9 institutions affiliated with the International Gamma Knife Research Foundation. Patients were matched by adenoma and radiosurgical parameters and stratified based on the interval between last resection and radiosurgery. Operative results, imaging data, and clinical outcomes were compared across groups following early (≤ 6 months after resection) or late (> 6 months after resection) radiosurgery. RESULTS After matching, 222 patients met the authors' study criteria (from an initial collection of 496 patients) and were grouped based on early (n = 111) or late (n = 111) GKRS following transsphenoidal surgery. There was a greater risk of tumor progression after GKRS (p = 0.013) and residual tumor (p = 0.038) in the late radiosurgical group over a median imaging follow-up period of 68.5 months. No significant difference in the occurrence of post-GKRS endocrinopathy was observed (p = 0.68). Thirty percent of patients without endocrinopathy in the early cohort developed new endocrinopathies during the follow-up period versus 27% in the late cohort (p = 0.84). Fourteen percent of the patients in the early group and 25% of the patients in the late group experienced the resolution of endocrine dysfunction after original presentation (p = 0.32). CONCLUSIONS In this study, early GKRS was associated with a lower risk of

  14. Mortality in tongue cancer patients treated by curative surgery: a retrospective cohort study from CGRD

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    Ming-Shao Tsai

    2016-12-01

    Full Text Available Background Our study aimed to compare the outcomes of surgical treatment of tongue cancer patients in three different age groups. Methods From 2004 to 2013, we retrospectively analyzed the clinical data of 1,712 patients who were treated in the four institutions constituting the Chang Gung Memorial Hospitals (CGMH. We divided and studied the patients in three age groups: Group 1, younger (<65 years; Group 2, young old (65 to <75; and Group 3, older old patients (≥75 years. Results Multivariate analyses determined the unfavorable, independent prognostic factors of overall survival to be male sex, older age, advanced stage, advanced T, N classifications, and surgery plus chemotherapy. No significant differences were found in adjusted hazard ratios (HR of death in early-stage disease (stage I–II among Group 1 (HR 1.0, Group 2 (HR 1.43, 95% confidence interval (CI [0.87–2.34], p = 0.158, and Group 3 (HR 1.22, 95% CI [0.49–3.03], p = 0.664 patients. However, amongst advanced-stage patients (stage (III–IV, Group 3 (HR 2.53, 95% CI [1.46–4.38], p  = 0.001 showed significantly worse survival than the other two groups after other variables were adjusted for. Fourteen out of 21 older old, advanced-staged patients finally died, and most of the mortalities were non-cancerogenic (9/14, 64.3%, and mostly occurred within one year (12/14, 85% after cancer diagnosis. These non-cancer cause of death included underlying diseases in combination with infection, pneumonia, poor nutrition status, and trauma. Conclusions Our study showed that advanced T classification (T3–4, positive nodal metastasis (N1–3 and poorly differentiated tumor predicted poor survival for all patients. Outcome of early-stage patients (stage I–II among three age groups were not significantly different. However, for advanced-stage patients (stage III–IV, the older old patients (≥75 had significantly worse survival than the other two patient groups. Therefore, for early

  15. Novel approach of single-port laparoscopic appendectomy as a solo surgery: A prospective cohort study.

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    Kim, Say-June; Choi, Byung-Jo; Lee, Sang Chul

    2015-09-01

    Recent advances in medical equipment and surgical techniques have enabled solo surgery, wherein a surgeon operates alone without the participation of other surgical members. However, the application of solo surgery in single-port laparoscopic surgery (SPLS) has been rarely reported. Prospectively collected databases of 60 patients who underwent solo-SPLS for appendicitis between March 2013 and June 2014 were retrospectively reviewed. Making a transumbilical incision into the peritoneal cavity was facilitated by using a Lone Star self-retaining retractor. After the establishment of a single port through the umbilicus, we installed a mechanical adjustable camera holder (Endoworld®LAP53 Holding Systems). It was anchored to the operating table rail and firmly held the laparoscope with a possibility to adjust the same as required by the operator. The operative method was identical to the SPLS appendectomy, except for the use of these instruments. The median operation time was 50 min (25-120). None of the patients required open conversion, insertion of an additional port or help of a human assistant. The median length of hospital stay for all patients was 1.0 day (range: 1-3 days). The median dosage of required intravenous analgesics (ketorolac, 0.1 mg/kg of body weight) was 0.0 ampoule (0-4). The median interval to initiation of solid diet was 1 day (1-2). The incidence of postoperative complications was 8.3% (5/60). Our results shows that solo-SPLS appendectomy could be performed without increasing operation time or postoperative complications when performed by a surgeon competent in performing SPLS appendectomy. Copyright © 2015. Published by Elsevier Ltd.

  16. The impact of complications on quality of life following colorectal surgery : A prospective cohort study to evaluate the Clavien-Dindo classification system

    NARCIS (Netherlands)

    Bosma, E.; Pullens, M.J.J.; de Vries, J.; Roukema, J.A.

    2016-01-01

    Aim This prospective cohort study was performed to evaluate the impact of complications on quality of life (QOL) in colorectal surgery. The Clavien–Dindo complication classification (CDCC) is promising, but has not been evaluated by relating the classification to patient-reported outcome measures.

  17. Serum Cystatin C– Versus Creatinine-Based Definitions of Acute Kidney Injury Following Cardiac Surgery: A Prospective Cohort Study

    Science.gov (United States)

    Spahillari, Aferdita; Parikh, Chirag R.; Sint, Kyaw; Koyner, Jay L.; Patel, Uptal D.; Edelstein, Charles L.; Passik, Cary S.; Thiessen-Philbrook, Heather; Swaminathan, Madhav; Shlipak, Michael G.

    2012-01-01

    Background The primary aim of this study was to compare the sensitivity and rapidity of AKI detection by cystatin C relative to creatinine following cardiac surgery. Study Design Prospective cohort study Settings and Participants 1,150 high-risk, adult cardiac surgery patients in the TRIBE-AKI (Translational Research Investigating Biomarker Endpoints for Acute Kidney Injury) Consortium. Predictor Changes in serum creatinine and cystatin C Outcome Post-surgical incidence of AKI Measurements Serum creatinine and cystatin C were measured at the preoperative visit and daily on postoperative days 1–5. To allow comparisons between changes in creatinine and cystatin C, AKI endpoints were defined by the relative increases in each marker from baseline (25, 50 and 100%) and the incidence of AKI was compared based upon each marker. Secondary aims were to compare clinical outcomes among patients defined as having AKI by cystatin C and/or creatinine. Results Overall, serum creatinine detected more cases of AKI than cystatin C: 35% developed a ≥25% increase in serum creatinine, whereas only 23% had ≥25% increase in cystatin C (p Creatinine also had higher proportions meeting the 50% (14% and 8%, pcreatinine or cystatin C. However, for each AKI threshold, patients with AKI confirmed by both markers had significantly higher risk of the combined mortality/dialysis outcome compared with patients with AKI detected by creatinine alone (p=0.002). Limitations There were few adverse clinical outcomes, limiting our ability to detect differences in outcomes between subgroups of patients based upon their definitions of AKI. Conclusion In this large multicenter study, we found that cystatin C was less sensitive for AKI detection compared with creatinine. However, confirmation by cystatin C appeared to identify a subset of AKI patients with substantially higher risk of adverse outcomes. PMID:22809763

  18. Influence of bariatric surgery on quality of life, body image, and general self-efficacy within 6 and 24 months-a prospective cohort study.

    Science.gov (United States)

    Nickel, Felix; Schmidt, Lukas; Bruckner, Thomas; Büchler, Markus W; Müller-Stich, Beat-Peter; Fischer, Lars

    2017-02-01

    It has been proven that bariatric surgery affects weight loss. Patients with morbid obesity have a significantly lower quality of life (QOL) and body image compared with the general population. To evaluate QOL, body image, and general self-efficacy (GSE) in patients with morbid obesity undergoing bariatric surgery within clinical parameters. Monocentric, prospective, longitudinal cohort study. Patients completed the short form 36 (SF-36) for QOL, body image questionnaire, and GSE scale 3 times: before surgery and within 6 months and 24 months after surgery. Influence of gender, age, and type of procedure, either laparoscopic sleeve gastrectomy (SG) or laparoscopic Roux-en-Y gastric bypass, were analyzed. Thirty patients completed the questionnaires before and within 6 and 24 months after surgery. SF-36 physical summary score improved significantly from 34.3±11.0 before surgery to 46.0±10.4 within 6 months (Psurgery. SF-36 mental summary score improved significantly from 42.1±14.7 before surgery to 52.3±8.4 within 6 months (Psurgery. There were no significant differences between gender, age, and type of operation. Body image and GSE improved significantly after bariatric surgery (Pbariatric surgery. Improvements were independent of gender, age, and type of operation. Mental QOL was influenced by body image and GSE. Copyright © 2017 American Society for Bariatric Surgery. Published by Elsevier Inc. All rights reserved.

  19. A multicenter prospective cohort study on camera navigation training for key user groups in minimally invasive surgery.

    Science.gov (United States)

    Graafland, Maurits; Bok, Kiki; Schreuder, Henk W R; Schijven, Marlies P

    2014-06-01

    Untrained laparoscopic camera assistants in minimally invasive surgery (MIS) may cause suboptimal view of the operating field, thereby increasing risk for errors. Camera navigation is often performed by the least experienced member of the operating team, such as inexperienced surgical residents, operating room nurses, and medical students. The operating room nurses and medical students are currently not included as key user groups in structured laparoscopic training programs. A new virtual reality laparoscopic camera navigation (LCN) module was specifically developed for these key user groups. This multicenter prospective cohort study assesses face validity and construct validity of the LCN module on the Simendo virtual reality simulator. Face validity was assessed through a questionnaire on resemblance to reality and perceived usability of the instrument among experts and trainees. Construct validity was assessed by comparing scores of groups with different levels of experience on outcome parameters of speed and movement proficiency. The results obtained show uniform and positive evaluation of the LCN module among expert users and trainees, signifying face validity. Experts and intermediate experience groups performed significantly better in task time and camera stability during three repetitions, compared to the less experienced user groups (P < .007). Comparison of learning curves showed significant improvement of proficiency in time and camera stability for all groups during three repetitions (P < .007). The results of this study show face validity and construct validity of the LCN module. The module is suitable for use in training curricula for operating room nurses and novice surgical trainees, aimed at improving team performance in minimally invasive surgery. © The Author(s) 2013.

  20. Oncological outcome following laparoscopic versus open surgery for cancer in the transverse colon: a nationwide cohort study.

    Science.gov (United States)

    Nordholm-Carstensen, Andreas; Jensen, Kristian Kiim; Krarup, Peter-Martin

    2018-03-30

    The literature on transverse colonic cancer resection is sparse. The optimal surgical approach for this disease is thus unknown. This study aimed to examine laparoscopic versus open surgery for transverse colonic cancer. This study was a nationwide, retrospective cohort study of all patients registered with a transverse colonic cancer in Denmark between 2010 and 2013. Data were obtained from the Danish Colorectal Cancer Group, the Danish Pathology Registry, Danish National Patient Registry, and patients' records. Main outcome measures were surgical resection plane, lymph node yield, and long-term cancer recurrence and survival. In total, 357 patients were included. Non-mesocolic resection was more frequent with laparoscopic compared with open resection (adjusted odds ratio 2.44, 95% CI 1.29-4.60, P = 0.006). Median number of harvested lymph nodes was higher after open compared with laparoscopic resection (22 versus 19, P = 0.03). Non-mesocolic resection (adjusted hazard ratio 2.45, 95% CI 1.25-4.79, P = 0.01) and increasing tumor stage (P transverse colonic cancers led to similar long-term results compared with open resection.

  1. Cohort profile: the Nordic Antireflux Surgery Cohort (NordASCo).

    Science.gov (United States)

    Maret-Ouda, John; Wahlin, Karl; Artama, Miia; Brusselaers, Nele; Färkkilä, Martti; Lynge, Elsebeth; Mattsson, Fredrik; Pukkala, Eero; Romundstad, Pål; Tryggvadóttir, Laufey; Euler-Chelpin, My von; Lagergren, Jesper

    2017-06-08

    To describe a newly created all-Nordic cohort of patients with gastro-oesophageal reflux disease (GORD), entitled the Nordic Antireflux Surgery Cohort (NordASCo), which will be used to compare participants having undergone antireflux surgery with those who have not regarding risk of cancers, other diseases and mortality. Included were individuals with a GORD diagnosis recorded in any of the nationwide patient registries in the Nordic countries (Denmark, Finland, Iceland, Norway and Sweden) in 1964-2014 (with various start and end years in different countries). Data regarding cancer, other diseases and mortality were retrieved from the nationwide registries for cancer, patients and causes of death, respectively. The NordASCo includes 945 153 individuals with a diagnosis of GORD. Of these, 48 433 (5.1%) have undergone primary antireflux surgery. Median age at primary antireflux surgery ranged from 47 to 52 years in the different countries. The coding practices of GORD seem to have differed between the Nordic countries. The NordASCo will initially be used to analyse the risk of developing known or potential GORD-related cancers, that is, tumours of the oesophagus, stomach, larynx, pharynx and lung, and to evaluate the mortality in the short-term and long-term perspectives. Additionally, the cohort will be used to evaluate the risk of non-malignant respiratory conditions that might be caused by aspiration of gastric contents. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  2. Comparing the Quality and Complications of Tube Thoracostomy by Emergency Medicine and Surgery Residents; a Cohort Study

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    Parvin Kashani

    2017-01-01

    Full Text Available Introduction: Tube thoracostomy complications depend on the operator’s skill, patients’ general condition and the place in which the procedure is done. The present study aimed to compare the quality and complications of tube thoracostomy carried out by emergency medicine residents (EMRs and surgery residents (SRs.Methods: This cohort study was conducted on 18-60 years old trauma patients in need of tube thoracostomy presenting to two academic emergency departments. Quality of tube placement and its subsequent complications until tube removal were compared between SRs and EMRs using SPSS 20.Results: 72 patients with the mean age of 37.1±14.1 years were studied (86.1% male. 23 (63.8% cases were complicated in SRs and 22 (61.1% cases in EMRs group (total= 62.5%. Chest drain dislodgement (22.2% in SRs vs. 22.2% EMRs; p>0.99, drainage failure (19.4% in SRs vs. 16.7% EMRs; p=0.50, and surgical site infection (11.1% in SRs vs. 19.4% EMRs; p=0.25 were among the most common observed complications. The overall odds ratio of complication development was 0.89 (95% CI: 0.35-2.25, p = 0.814 for SRs and 1.12 (95% CI: 0.28-4.53, p = 0.867 for EMRs.Conclusion: The findings of the present study showed no significant difference between SRs and EMRs regarding quality of tube thoracostomy placement and its subsequent complications for trauma patients. The rate of complications were interestingly high (>60% for both groups.

  3. The risk of acquiring bacterial meningitis following surgery in Denmark, 1996-2009: a nationwide retrospective cohort study with emphasis on ear, nose and throat (ENT) and neurosurgery.

    Science.gov (United States)

    Howitz, M F; Homøe, P

    2014-06-01

    This paper estimates the risk of bacterial meningitis following surgery between 1996 and 2009 in Denmark. We conducted two retrospective nationwide cohort studies; first by linking notified bacterial meningitis cases to the National Patient Registry to see how many had undergone a surgical procedure; second, we scrutinized notified bacterial meningitis cases to see if the clinician suspected a surgical procedure to be the aetiology. We found that ear, nose and throat surgery had an 11-fold, and neurosurgery a sevenfold, increased risk compared to the reference group in the first 10 days following surgery. Streptococcus pneumoniae was the pathogen most often involved. Operation procedures involving penetration of dura mater was associated with increased risk for post-operative bacterial meningitis. In absolute numbers we found few bacterial meningitis cases after surgery; however, patients undergoing certain surgical procedures are at-risk and should be considered when national vaccination guidelines are revised.

  4. The cost-effectiveness of an outpatient anesthesia consultation clinic before surgery: a matched Hong Kong cohort study

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    Lee Anna

    2012-06-01

    Full Text Available Abstract Background Outpatient anesthesia clinics are well established in North America, Europe and Australia, but few economic evaluations have been published. The Perioperative Systems in Hong Kong are best described as a hybrid model of the new and old systems of surgical care. In this matched cohort study, we compared the costs and effects of an outpatient anesthesia clinic (OPAC with the conventional system of admitting patients to the ward a day before surgery for their pre-anesthesia consultation. A second objective of the study was to determine the patient’s median Willingness To Pay (WTP value for an OPAC. Methods A total of 352 patients were matched (1:1 on their elective surgical procedure to either the clinic group or to the conventional group. The primary outcome was quality of recovery score and overall perioperative treatment cost (US$. To detect a difference in the joint cost-effect relationship between groups, a cost-effectiveness acceptability curve (CEAC was drawn. A modified Poisson regression model was used to examine the factors associated with patients willing to pay more than the median WTP value for an OPAC. Results The quality of recovery scores on the first day after surgery between the clinic and conventional groups were similar (mean difference, -0.1; 95% confidence interval (CI, -0.6 to 0.3; P = 0.57. Although the preoperative costs were less in the clinic group (mean difference, -$463, 95% CI, -$648 to -$278 per patient; P P = 0.51. The CEAC showed that we could not be 95% confident that the clinic was cost-effective. Compared to the conventional group, clinic patients were three times more likely to prefer OPAC care (relative risk (RR 2.75, 95% CI, 2.13 to 3.55; P P Conclusions There is uncertainty about the cost-effectiveness of an OPAC in the Hong Kong setting. Most clinic patients were willing to pay a small amount for an anesthesia clinic consultation.

  5. Remission of Type 2 Diabetes Mellitus in Patients After Different Types of Bariatric Surgery: A Population-Based Cohort Study in the United Kingdom.

    Science.gov (United States)

    Yska, Jan Peter; van Roon, Eric N; de Boer, Anthonius; Leufkens, Hubert G M; Wilffert, Bob; de Heide, Loek J M; de Vries, Frank; Lalmohamed, Arief

    2015-12-01

    To our knowledge, an observational study on the remission of type 2 diabetes mellitus (T2DM) after different types of bariatric surgery based on data from general practice has not been carried out. To assess the effect of different types of bariatric surgery in patients with T2DM on diabetes remission compared with matched control patients, and the effect of the type of bariatric surgery on improvement of glycemic control and related clinical parameters. A retrospective cohort study conducted from May 2013 to May 2014 within the Clinical Practice Research Datalink involving 2978 patients with a record of bariatric surgery (2005-2012) and a body mass index (calculated as weight in kilograms divided by height in meters squared) of 35 or greater. We identified 569 patients with T2DM and matched them to 1881 patients with diabetes without bariatric surgery. Data on the use of medication and laboratory results were evaluated. Bariatric surgery, stratified by type of surgery (gastric banding, Roux-en-Y gastric bypass, sleeve gastrectomy, or other/unknown). Remission of T2DM (complete discontinuation of glycemic therapy, accompanied with a subsequently recorded hemoglobin A1c levelpatients undergoing bariatric surgery, we found a prevalence of 19.1% for T2DM. Per 1000 person-years, 94.5 diabetes mellitus remissions were found in patients who underwent bariatric surgery compared with 4.9 diabetes mellitus remissions in matched control patients. Patients with diabetes who underwent bariatric surgery had an 18-fold increased chance for T2DM remission (adjusted relative rate [RR], 17.8; 95% CI, 11.2-28.4) compared with matched control patients. The greatest effect size was observed for gastric bypass (adjusted RR, 43.1; 95% CI, 19.7-94.5), followed by sleeve gastrectomy (adjusted RR, 16.6; 95% CI, 4.7-58.4) and gastric banding (adjusted RR, 6.9; 95% CI, 3.1-15.2). Body mass index and triglyceride, blood glucose, and hemoglobin A1c levels sharply decreased during the first 2

  6. Neer Award 2016: Outpatient total shoulder arthroplasty in an ambulatory surgery center is a safe alternative to inpatient total shoulder arthroplasty in a hospital: a matched cohort study.

    Science.gov (United States)

    Brolin, Tyler J; Mulligan, Ryan P; Azar, Frederick M; Throckmorton, Thomas W

    2017-02-01

    Recent emphasis on safe and efficient delivery of high-quality health care has increased interest in outpatient total joint arthroplasty. The purpose of this study was to evaluate the safety of outpatient total shoulder arthroplasty (TSA) by comparing episode-of-care complications in matched cohorts of patients with anatomic TSA as an outpatient or inpatient procedure. Thirty patients with outpatient TSA at a freestanding ambulatory surgery center (ASC) were compared with an age- and comorbidities-matched cohort of 30 patients with traditional inpatient TSA to evaluate 90-day episode-of-care complications, including hospital admissions or readmissions and reoperations. Two-tailed t-tests were used to evaluate differences, and differences of P surgery and disrupted his subscapularis repair. Three minor complications in the hospital cohort were mild asymptomatic anterior subluxation, blood transfusion, and superficial venous thrombosis. The complication rates (13% vs. 10%) were not significantly different. Outpatient TSA is a safe alternative to hospital admission in appropriately selected patients. Further investigation is warranted to evaluate the longer term outcomes and cost-effectiveness of outpatient TSA. Copyright © 2017 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

  7. Long-term follow-up of transsexual persons undergoing sex reassignment surgery: cohort study in Sweden.

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    Cecilia Dhejne

    Full Text Available CONTEXT: The treatment for transsexualism is sex reassignment, including hormonal treatment and surgery aimed at making the person's body as congruent with the opposite sex as possible. There is a dearth of long term, follow-up studies after sex reassignment. OBJECTIVE: To estimate mortality, morbidity, and criminal rate after surgical sex reassignment of transsexual persons. DESIGN: A population-based matched cohort study. SETTING: Sweden, 1973-2003. PARTICIPANTS: All 324 sex-reassigned persons (191 male-to-females, 133 female-to-males in Sweden, 1973-2003. Random population controls (10:1 were matched by birth year and birth sex or reassigned (final sex, respectively. MAIN OUTCOME MEASURES: Hazard ratios (HR with 95% confidence intervals (CI for mortality and psychiatric morbidity were obtained with Cox regression models, which were adjusted for immigrant status and psychiatric morbidity prior to sex reassignment (adjusted HR [aHR]. RESULTS: The overall mortality for sex-reassigned persons was higher during follow-up (aHR 2.8; 95% CI 1.8-4.3 than for controls of the same birth sex, particularly death from suicide (aHR 19.1; 95% CI 5.8-62.9. Sex-reassigned persons also had an increased risk for suicide attempts (aHR 4.9; 95% CI 2.9-8.5 and psychiatric inpatient care (aHR 2.8; 95% CI 2.0-3.9. Comparisons with controls matched on reassigned sex yielded similar results. Female-to-males, but not male-to-females, had a higher risk for criminal convictions than their respective birth sex controls. CONCLUSIONS: Persons with transsexualism, after sex reassignment, have considerably higher risks for mortality, suicidal behaviour, and psychiatric morbidity than the general population. Our findings suggest that sex reassignment, although alleviating gender dysphoria, may not suffice as treatment for transsexualism, and should inspire improved psychiatric and somatic care after sex reassignment for this patient group.

  8. Bariatric Surgery in Obese Women of Reproductive Age Improves Conditions That Underlie Fertility and Pregnancy Outcomes: Retrospective Cohort Study of UK National Bariatric Surgery Registry (NBSR).

    Science.gov (United States)

    Edison, Eric; Whyte, Martin; van Vlymen, Jeremy; Jones, Simon; Gatenby, Piers; de Lusignan, Simon; Shawe, Jill

    2016-12-01

    The aims of this study are the following: to describe the female population of reproductive age having bariatric surgery in the UK, to assess the age and ethnicity of women accessing surgery, and to assess the effect of bariatric surgery on factors that underlie fertility and pregnancy outcomes. Demographic details, comorbidities, and operative type of women aged 18-45 years were extracted from the National Bariatric Surgery Registry (NBSR). A comparison was made with non-operative cases (aged 18-45 and BMI ≥40 kg/m 2 ) from the Health Survey for England (HSE, 2007-2013). Analyses were performed using "R" software. Data were extracted on 15,222 women from NBSR and 1073 from HSE. Women aged 18-45 comprised 53 % of operations. Non-Caucasians were under-represented in NBSR compared to HSE (10 vs 16 % respectively, p years (Wilcoxon test p year postoperatively from 48.2 ± 8.3 to 37.4 ± 7.5 kg/m 2 (t test, p fertility and pregnancy outcomes. A prospective study is required to verify these effects.

  9. Effects of preventive surgery for unruptured intracranial aneurysms on attention, executive function, learning and memory: a prospective cohort study.

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    Chung, Joonho; Seok, Jeong-Ho; Kwon, Min A; Kim, Yong Bae; Joo, Jin-Yang; Hong, Chang-Ki

    2016-01-01

    We prospectively evaluated the effects of preventive surgery for unruptured intracranial aneurysms on attention, executive function, learning and memory. Between March 2012 and June 2013, 56 patients were recruited for this study. Fifty-one patients met the inclusion criteria and were enrolled. Inclusion criteria were as follows: (1) age ≤65 years and (2) planned microsurgery or endovascular surgery for unruptured intracranial aneurysm. Exclusion criteria were as follows: (1) preoperative intelligence quotient attention), WCT (executive function) and VLT (learning and memory) scores did not change significantly between the pre- and postoperative evaluations. The ACCPT, WCT, total VLT scores (verbal learning) and delayed VLT scores (memory) did not differ significantly between patients undergoing microsurgery and those undergoing endovascular surgery. However, ACCPT, WCT and delayed VLT scores decreased postoperatively in patients with leukoaraiosis on preoperative FLAIR images (OR 9.899, p = 0.041; OR 11.421, p = 0.006; OR 2.952, p = 0.024, respectively). Preventive surgery for unruptured intracranial aneurysms did not affect attention, executive function, learning or memory. However, patients with leukoaraiosis on FLAIR images might be prone to deficits in attention, executive function and memory postoperatively, whereas learning might not be affected.

  10. Prevalence and risk of depressive symptoms 3-4 months post-surgery in a nationwide cohort study of Danish women treated for early stage breast-cancer

    DEFF Research Database (Denmark)

    Christensen, Søren; Zachariae, Robert; Jensen, Anders Bonde

    2009-01-01

    surgery for breast cancer, and to identify clinical risk factors while adjusting for pre-cancer sociodemographic factors, comorbidity, and psychiatric history. PATIENTS AND METHODS: The study cohort consists of 4917 Danish women, aged 18-70 years, receiving standardized treatment for early stage invasive...... breast cancer during the 2 1/2 year study period. Of these, 3343 women (68%) participated in a questionnaire study 12-16 weeks following surgery. Depressive symptoms (Beck's Depression Inventory II) and health-related behaviors were assessed by questionnaire. The Danish Breast Cancer Cooperative Group...... prognostic information. Physical functioning, smoking, alcohol use, and BMI were also independently associated with depressive symptoms. CONCLUSION: Risk factors for depressive symptoms were primarily restricted to pre-cancer conditions rather than disease-specific conditions. Special attention should...

  11. Dexmedetomidine as an adjuvant for perioperative pain management in adolescents undergoing bariatric surgery: An observational cohort study.

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    Vaughns, Janelle D; Martin, Celeste; Nelson, Jonathon; Nadler, Evan; Quezado, Zenaide M

    2017-11-01

    The anesthetic management of adolescents undergoing bariatric surgery presents a number of challenges, including increased risk of postoperative opioid-related respiratory depression. These patients could benefit from adjunctive analgesics with opioid-sparring effects to optimize perioperative pain control. Dexmedetomidine, a selective α2-adrenoreceptor agonist, has sedative and analgesic properties with no respiratory depressant effects. To determine the effect of intraoperative dexmedetomidine on opioid requirement and perioperative pain management in obese adolescents undergoing bariatric surgery. An observational study of 26 consecutive patients treated with and without dexmedetomidine during the intraoperative period was conducted. The dexmedetomidine treated patients received a loading dose over 30min and a continuous infusion thereafter. The standard group represented patients who received an institutional standard anesthetic without dexmedetomidine. The primary outcome was total perioperative intravenous morphine equivalent (MEq). We also examined reported pain scores during the perioperative period. While there were no significant differences in age, height and weight category, there were imbalances on race distribution between the two groups. Both groups received similar doses of ketorolac and acetaminophen perioperatively. Overall, during 48h postoperatively, the dexmedetomidine group received significantly less total MEq administration compared with the standard group. Three patients in the dexmedetomidine group required ephedrine to treat an episode of hypotension. These results suggest that the use of dexmedetomidine during bariatric surgery in the morbidly obese adolescent population is associated with decreased opioid utilization during the perioperative period. Future randomized studies will determine the role of dexmedetomidine in the pain management of obese adolescents undergoing bariatric surgery. Therapeutic, Level III. Copyright © 2017

  12. Patients with sciatica still experience pain and disability 5 years after surgery: A systematic review with meta-analysis of cohort studies.

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    Machado, G C; Witzleb, A J; Fritsch, C; Maher, C G; Ferreira, P H; Ferreira, M L

    2016-11-01

    The clinical course of patients with sciatica is believed to be favourable, but there is conflicting evidence on the postoperative course of this condition. We aimed to investigate the clinical course of sciatica following surgery. An electronic search was conducted on MEDLINE, EMBASE and CINAHL from inception to April 2015. We screened for prospective cohort studies investigating pain or disability outcomes for patients with sciatica treated surgically. Fractional polynomial regression analysis was used to generate pooled means and 95% confidence intervals (CI) of pain and disability up to 5 years after surgery. Estimates of pain and disability (converted to a 0-100 scale) were plotted over time, from inception to last available follow-up time. Forty records (39 cohort studies) were included with a total of 13,883 patients with sciatica. Before surgery, the pooled mean leg pain score was 75.2 (95% CI 68.1-82.4) which reduced to 15.3 (95% CI 8.5-22.1) at 3 months. Patients were never fully recovered in the long-term and pain increased to 21.0 (95% CI 12.5-29.5) at 5 years. The pooled mean disability score before surgery was 55.1 (95% CI 52.3-58.0) and this decreased to 15.5 (95% CI 13.3-17.6) at 3 months, and further reduced to 13.1 (95% CI 10.6-15.5) at 5 years. Although surgery is followed by a rapid decrease in pain and disability by 3 months, patients still experience mild to moderate pain and disability 5 years after surgery. WHAT DOES THIS REVIEW ADD?: This review provides a quantitative summary of the postoperative course of patients with sciatica. Patients with sciatica experienced a rapid reduction in pain and disability in the first 3 months, but still had mild to moderate symptoms 5 years after surgery. Although no significant differences were found, microdiscectomy showed larger improvements compared to other surgical techniques. © 2016 European Pain Federation - EFIC®.

  13. Timing of surgery for hip fracture and in-hospital mortality: a retrospective population-based cohort study in the Spanish National Health System

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    Librero Julián

    2012-01-01

    Full Text Available Abstract Background While the benefits or otherwise of early hip fracture repair is a long-running controversy with studies showing contradictory results, this practice is being adopted as a quality indicator in several health care organizations. The aim of this study is to analyze the association between early hip fracture repair and in-hospital mortality in elderly people attending public hospitals in the Spanish National Health System and, additionally, to explore factors associated with the decision to perform early hip fracture repair. Methods A cohort of 56,500 patients of 60-years-old and over, hospitalized for hip fracture during the period 2002 to 2005 in all the public hospitals in 8 Spanish regions, were followed up using administrative databases to identify the time to surgical repair and in-hospital mortality. We used a multivariate logistic regression model to analyze the relationship between the timing of surgery ( Results Early surgery was performed on 25% of the patients. In the unadjusted analysis early surgery showed an absolute difference in risk of mortality of 0.57 (from 4.42% to 3.85%. However, patients undergoing delayed surgery were older and had higher comorbidity and severity of illness. Timeliness for surgery was not found to be related to in-hospital mortality once confounding factors such as age, sex, chronic comorbidities as well as the severity of illness were controlled for in the multivariate analysis. Conclusions Older age, male gender, higher chronic comorbidity and higher severity measured by the Risk Mortality Index were associated with higher mortality, but the time to surgery was not.

  14. Increased permeability-oedema and atelectasis in pulmonary dysfunction after trauma and surgery: a prospective cohort study

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    Groeneveld AB Johan

    2007-07-01

    Full Text Available Abstract Background Trauma and surgery may be complicated by pulmonary dysfunction, acute lung injury (ALI and acute respiratory distress syndrome (ARDS, but the mechanisms are incompletely understood. Methods We evaluated lung capillary protein permeability non-invasively with help of the 67Ga-transferrin pulmonary leak index (PLI technique and extravascular lung water (EVLW by the transpulmonary thermal-dye dilution technique in consecutive, mechanically ventilated patients in the intensive care unit within 24 h of direct, blunt thoracic trauma (n = 5, 2 with ARDS, and within 12 h of indirect trauma by transhiatal oesophagectomy (n = 8, abdominal surgery for cancer (n = 6 and bone surgery (n = 4. We studied transfusion history, haemodynamics, oxygenation and mechanics of the lungs. The lung injury score (LIS, 0–4 was calculated. Plain radiography was also done to judge densities and atelectasis. Results The PLI and EVLW were elevated above normal in 61 and 30% of patients, respectively, and the PLI directly related to the number of red cell concentrates given (rs = 0.69, P s = 0.55, P = 0.007. Thoracic trauma patients had a worse oxygenation requiring higher airway pressures and thus higher LIS than the other patient groups, unrelated to PLI and EVLW but attributable to a higher cardiac output and thereby venous admixture. Finally, patients with radiographic signs of atelectasis had more impaired oxygenation and more densities than those without. Conclusion The oxygenation defect and radiographic densities in mechanically ventilated patients with pulmonary dysfunction and ALI/ARDS after trauma and surgery are likely caused by atelectasis rather than by increased permeability-oedema related to red cell transfusion.

  15. Global incidence and case fatality rate of pulmonary embolism following major surgery: a protocol for a systematic review and meta-analysis of cohort studies.

    Science.gov (United States)

    Temgoua, Mazou N; Tochie, Joel Noutakdie; Noubiap, Jean Jacques; Agbor, Valirie Ndip; Danwang, Celestin; Endomba, Francky Teddy A; Nkemngu, Njinkeng J

    2017-12-04

    Pulmonary embolism (PE) is a life-threatening condition common after major surgery. Although the high incidence (0.3-30%) and mortality rate (16.9-31%) of PE in patients undergoing major surgical procedures is apparent from findings of contemporary observational studies, there is a lack of a summary and meta-analysis data on the epidemiology of postoperative PE in this same regard. Hence, we propose to conduct the first systematic review to summarise existing data on the global incidence, determinants and case fatality rate of PE following major surgery. Electronic databases including MEDLINE, EMBASE, SCOPUS, WHO global health library (including LILACS), Web of Science and Google scholar from inception to April 30, 2017, will be searched for cohort studies reporting on the incidence, determinants and case fatality rate of PE occurring after major surgery. Data from grey literature will also be assessed. Two investigators will independently perform study selection and data extraction. Included studies will be evaluated for risk of bias. Appropriate meta-analytic methods will be used to pool incidence and case fatality rate estimates from studies with identical features, globally and by subgroups of major surgical procedures. Random-effects and risk ratio with 95% confidence interval will be used to summarise determinants and predictors of mortality of PE in patients undergoing major surgery. This systematic review and meta-analysis will provide the most up-to-date epidemiology of PE in patients undergoing major surgery to inform health authorities and identify further research topics based on the remaining knowledge gaps. PROSPERO CRD42017065126.

  16. Unexpected findings after surgery for suspected appendicitis rarely change treatment in pediatric patients; Results from a cohort study.

    Science.gov (United States)

    Gorter, Ramon R; van Amstel, Paul; van der Lee, Johanna H; van der Voorn, Patick; Bakx, Roel; Heij, Hugo A

    2017-08-01

    To determine if non-operative treatment is safe in children with acute appendicitis, we evaluated the incidence of unexpected findings after an appendectomy in children, and the influence they have on subsequent treatment. A historical cohort study (January 2004-December 2014) was performed including children, aged 0-17 years, who underwent an appendectomy for the suspicion of acute appendicitis. Patients were divided based upon histopathological examination. Unexpected findings were reviewed, as well as the subsequent treatment plan. In total 484 patients were included in this study. In the overall group, unexpected findings were noted in 10 (2.1%) patients of which two patients intra-operatively with a non-inflamed appendix (Ileitis terminalis N=1 and ovarian torsion N=1) and in 8 patients on histopathological examination. The latter group consisted of 4 patients with concomitant simple appendicitis (parasitic infection N=3 and Walthard cell rest N=1), two with concomitant complex appendicitis (carcinoid N=1 and parasitic infection N=1) and two patients with a non-inflamed appendix (endometriosis N=1 and parasitic infection N=1). Treatment was changed in 4 patients (appendicitis, as the occurrence of unexpected findings was low, with extremely few necessary changes of the treatment plan because of serious findings. Prognosis study. Level 2 (retrospective cohort study). Copyright © 2017 Elsevier Inc. All rights reserved.

  17. Apical surgery vs apical surgery with simultaneous orthograde retreatment: A prospective cohort clinical study of teeth affected by persistent periapical lesion

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    Carlo Prati

    2018-06-01

    Full Text Available Aim: This prospective clinical study analyzed the 24-month outcome of conventional apical surgery retro-filled with calcium-silicate cement versus apical surgery with simultaneous orthograde retreatment by means of clinical and radiographic criteria. Materials and methods: This study included 83 teeth affected by persistent periapical lesions in 68 patients. Mean age was 52 years (median = 51 years; range 19–81 years. Twenty-eight cases were treated with apical surgery, 16 cases with apical surgery with simultaneous orthograde retreatment and 39 cases with orthograde retreatment in previously treated teeth established as control group. Periapical index score (PAI was used as radiographic criteria. Teeth were examined at 6 months, 1 and 2 years and classified as healed (without any symptoms and PAI ≤ 2, healing (without any symptoms and PAI = 3 or diseased (with symptoms or PAI ≥ 4 and not functional on the basis of radiographic and clinical criteria. At 24 months evaluation, healed and healing were considered as success and diseased and fracture as failure. Multilevel GLM model and an ordered logistic regression as statistical analysis was made with level of significance set at p < 0.05. Results: Total drop-out was 7% (n = 6. After 6–9 months, 6 teeth (3 from apical surgery, 2 from simultaneous treatment and 1 from orthograde retreatment were extracted for root fracture. Twenty-four-month success rate of apical surgery group was 78% (n = 17, apical surgery with simultaneous orthograde retreatment presented 81% (n = 10 and orthograde retreatment success was 80% (n = 24. There was no statistically difference between the groups at 24 months (p = 0.890. Conclusions: Both surgical techniques revealed a high percentage of healing, similar to that reported by previous studies. Apical surgery with simultaneous orthograde retreatment showed a faster healing after 12 months comparing to the control group. Riassunto: Scopo: In

  18. Hand-Assisted Robotic Surgery for Staging of Ovarian Cancer and Uterine Cancers With High Risk of Peritoneal Spread: A Retrospective Cohort Study.

    Science.gov (United States)

    Fornalik, Hubert; Brooks, Hannah; Moore, Elizabeth S; Flanders, Nicole L; Callahan, Michael J; Sutton, Gregory P

    2015-10-01

    This study aimed to determine surgical outcomes related to hand-assisted robotic surgery (HARS) for staging of ovarian cancer and uterine cancers with high risk of peritoneal spread and compare them to laparotomy and standard robotic-assisted surgery. A retrospective cohort study of women undergoing staging for uterine and ovarian cancer between January 2011 and July 2013 at a major metropolitan teaching hospital was reviewed. Patients undergoing HARS were matched with patients undergoing staging laparotomy [exploratory laparotomy (XLAP)] for the same indications and with patients undergoing traditional robotic surgery (RS) for staging of endometrioid endometrial cancer. In HARS, a longer incision is used to allow palpation of the peritoneal surfaces, to exteriorize the small bowel, to examine the mesentery, and to perform omentectomy. One hundred five patients were analyzed (15 HARS, 45 RS, 45 XLAP). Compared with XLAP, HARS was associated with decreased blood loss (200 vs 400 mL, P = 0.011) and shorter hospital stay (1 vs 4 days, P < 0.001). Patients who had undergone HARS had fewer major complications, but those results did not reach statistical significance (0% vs 27%, P = 0.063). Hand-assisted robotic surgery was associated with higher blood loss and length of stay as compared to robotic staging of endometrioid endometrial cancer (RS). Minor wound complications were also more common (27% vs 2%, P = 0.012). Hand-assisted robotic surgery allows for thorough visual and tactile assessment of peritoneal surfaces. It represents a safe alternative to laparotomy for staging of ovarian and uterine cancers with high risk of peritoneal spread. Long-term follow-up study is needed to determine oncologic adequacy of HARS.

  19. Comparison of sinonasal quality of life and health status in patients undergoing microscopic and endoscopic transsphenoidal surgery for pituitary lesions: a prospective cohort study.

    Science.gov (United States)

    Little, Andrew S; Kelly, Daniel F; Milligan, John; Griffiths, Chester; Prevedello, Daniel M; Carrau, Ricardo L; Rosseau, Gail; Barkhoudarian, Garni; Jahnke, Heidi; Chaloner, Charlene; Jelinek, Kathryn L; Chapple, Kristina; White, William L

    2015-09-01

    Despite the widespread adoption of endoscopic transsphenoidal surgery for pituitary adenomas, the sinonasal quality of life (QOL) and health status in patients who have undergone this technique have not been compared with these findings in patients who have undergone the traditional direct uninostril microsurgical technique. In this study, the authors compared the sinonasal QOL and patient-reported health status after use of these 2 surgical techniques. The study design was a nonblinded prospective cohort study. Adult patients with sellar pathology and planned transsphenoidal surgery were screened at 4 pituitary centers in the US between October 2011 and August 2013. The primary end point of the study was postoperative patient-reported sinonasal QOL as measured by the Anterior Skull Base Nasal Inventory-12 (ASK Nasal-12). Supplementary end points included patient-reported health status estimated by the 8-Item Short Form Health Survey (SF-8) and EuroQol (EQ)-5D-5L instruments, and sinonasal complications. Patients were followed for 6 months after surgery. A total of 301 patients were screened and 235 were enrolled in the study. Of these, 218 were analyzed (111 microsurgery patients, 107 endoscopic surgery patients). Demographic and tumor characteristics were similar between groups (p ≥ 0.12 for all comparisons). The most common complication in both groups was sinusitis (7% in the microsurgery group, 13% in the endoscopic surgery group; p = 0.15). Patients treated with the endoscopic technique were more likely to have postoperative nasal debridements (p surgery, but then returned to baseline at 3 months. At 3 months after surgery, patients treated with endoscopy reported statistically better sinonasal QOL compared with patients treated using the microscopic technique (p = 0.02), but there were no significant differences at any of the other postoperative time points. This is the first multicenter study to examine the effect of the transsphenoidal surgical technique

  20. Laparoscopic colorectal surgery in learning curve: Role of implementation of a standardized technique and recovery protocol. A cohort study

    Science.gov (United States)

    Luglio, Gaetano; De Palma, Giovanni Domenico; Tarquini, Rachele; Giglio, Mariano Cesare; Sollazzo, Viviana; Esposito, Emanuela; Spadarella, Emanuela; Peltrini, Roberto; Liccardo, Filomena; Bucci, Luigi

    2015-01-01

    Background Despite the proven benefits, laparoscopic colorectal surgery is still under utilized among surgeons. A steep learning is one of the causes of its limited adoption. Aim of the study is to determine the feasibility and morbidity rate after laparoscopic colorectal surgery in a single institution, “learning curve” experience, implementing a well standardized operative technique and recovery protocol. Methods The first 50 patients treated laparoscopically were included. All the procedures were performed by a trainee surgeon, supervised by a consultant surgeon, according to the principle of complete mesocolic excision with central vascular ligation or TME. Patients underwent a fast track recovery programme. Recovery parameters, short-term outcomes, morbidity and mortality have been assessed. Results Type of resections: 20 left side resections, 8 right side resections, 14 low anterior resection/TME, 5 total colectomy and IRA, 3 total panproctocolectomy and pouch. Mean operative time: 227 min; mean number of lymph-nodes: 18.7. Conversion rate: 8%. Mean time to flatus: 1.3 days; Mean time to solid stool: 2.3 days. Mean length of hospital stay: 7.2 days. Overall morbidity: 24%; major morbidity (Dindo–Clavien III): 4%. No anastomotic leak, no mortality, no 30-days readmission. Conclusion Proper laparoscopic colorectal surgery is safe and leads to excellent results in terms of recovery and short term outcomes, even in a learning curve setting. Key factors for better outcomes and shortening the learning curve seem to be the adoption of a standardized technique and training model along with the strict supervision of an expert colorectal surgeon. PMID:25859386

  1. Acute kidney injury after cardiac surgery is associated with mid-term but not long-term mortality: A cohort-based study.

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    Alejandro Ferreiro

    Full Text Available Acute kidney injury (AKI in cardiac surgery is associated with complications, early and late mortality and increased health care expenditures. The overall dynamic comorbidity-adjusted contributions of an episode of AKI on mortality during long-term follow-up have not been fully explored. A longitudinal cohort of 7075 adult patients admitted for cardiac surgery were enrolled in the study. Follow-up data were obtained through telephonic survey after 1, 5, 10, and 15 years or from the National Mortality Registry. All-cause mortality was assessed at five time intervals: I 30 days after surgery to 1 year; II 1 to 3 years; III 3 to 5 years; IV 5 to 10 years; and V 10 to 15 years. For the adjustment of mortality for comorbidity and pre-, intra- and postoperative variables, Cox proportional hazard regression models were conducted within each period. The overall incidence of AKI was 36.1%. AKI was an independent predictor of death only during the first five years after surgery (30 days to 1 year: HR 1.834, 95% CI 1.459 to 2.306; 1 to 3 years: HR 1.285, 95% CI 1.023 to 1.610; and 3 to five years: HR 1.330, 95% CI 1.123 to 1.750. Only age, diabetes mellitus and CHF were associated with increased risk of death over the entire follow-up period. Our study demonstrates a transient association of AKI with long-term mortality that progressively decreases and vanishes five years after surgery. The knowledge of this dynamic is crucial to understanding this complex association, planning health care and allocating resources.

  2. Early return to baseline range of motion and strength after anterior shoulder instability surgery: a Multicenter Orthopaedic Outcomes Network (MOON) shoulder group cohort study.

    Science.gov (United States)

    Buckwalter V, Joseph A; Wolf, Brian R; Glass, Natalie; Bollier, Matt; Kuhn, John E; Hettrich, Carolyn M

    2018-03-23

    Patients often return to higher-level activities and sports at 4 to 8 months after anterior shoulder stabilization procedures. It is unknown what percentage of patients have regained normal function at this time frame and what factors predict residual deficits, range of motion (ROM), and strength after anterior shoulder instability surgery. Ten participating sites throughout the United States enrolled patients in a prospective cohort study including primary, revision, arthroscopic, and open anterior stabilization procedures. Baseline demographic data and patient outcomes questionnaires were collected with initial physical examination, treatment, surgical findings, and surgical repair details. At the 6-month follow-up visit, ROM and strength measurements were collected and compared with preoperative measurements. There were 348 patients identified who underwent surgical treatment for anterior shoulder instability. Of these, 259 patients (74.0%) returned to baseline, and 89 (26.0%) did not return to baseline shoulder ROM (≥20° loss of ROM) or strength. A higher Beighton score (P = .01) and number of dislocations (P baseline ROM and strength at early follow-up. No surgical variables were found to influence return to baseline function, including open vs. arthroscopic surgery, primary vs. revision surgery, and number of suture anchors. By 4 to 8 months postoperatively, 76% of patients return to baseline ROM, 98% return to baseline strength, and 74% return to both baseline ROM and strength. An increased number of dislocations and generalized joint laxity were associated with failure to return to baseline ROM and strength at early follow-up after anterior shoulder instability surgery. Copyright © 2018 Journal of Shoulder and Elbow Surgery Board of Trustees. Published by Elsevier Inc. All rights reserved.

  3. Impact of Early Valve Surgery on Outcome of Staphylococcus aureus Prosthetic Valve Infective Endocarditis: Analysis in the International Collaboration of Endocarditis–Prospective Cohort Study

    Science.gov (United States)

    Chirouze, Catherine; Alla, François; Fowler, Vance G.; Sexton, Daniel J.; Corey, G. Ralph; Chu, Vivian H.; Wang, Andrew; Erpelding, Marie-Line; Durante-Mangoni, Emanuele; Fernández-Hidalgo, Nuria; Giannitsioti, Efthymia; Hannan, Margaret M.; Lejko-Zupanc, Tatjana; Miró, José M.; Muñoz, Patricia; Murdoch, David R.; Tattevin, Pierre; Tribouilloy, Christophe; Hoen, Bruno; Clara, Liliana; Sanchez, Marisa; Nacinovich, Francisco; Oses, Pablo Fernandez; Ronderos, Ricardo; Sucari, Adriana; Thierer, Jorge; Casabé, José; Cortes, Claudia; Altclas, Javier; Kogan, Silvia; Spelman, Denis; Athan, Eugene; Harris, Owen; Kennedy, Karina; Tan, Ren; Gordon, David; Papanicolas, Lito; Eisen, Damon; Grigg, Leeanne; Street, Alan; Korman, Tony; Kotsanas, Despina; Dever, Robyn; Jones, Phillip; Konecny, Pam; Lawrence, Richard; Rees, David; Ryan, Suzanne; Feneley, Michael P.; Harkness, John; Jones, Phillip; Ryan, Suzanne; Jones, Phillip; Ryan, Suzanne; Jones, Phillip; Post, Jeffrey; Reinbott, Porl; Ryan, Suzanne; Gattringer, Rainer; Wiesbauer, Franz; Andrade, Adriana Ribas; de Brito, Ana Cláudia Passos; Guimarães, Armenio Costa; Grinberg, Max; Mansur, Alfredo José; Siciliano, Rinaldo Focaccia; Strabelli, Tania Mara Varejao; Vieira, Marcelo Luiz Campos; de Medeiros Tranchesi, Regina Aparecida; Paiva, Marcelo Goulart; Fortes, Claudio Querido; de Oliveira Ramos, Auristela; Ferraiuoli, Giovanna; Golebiovski, Wilma; Lamas, Cristiane; Santos, Marisa; Weksler, Clara; Karlowsky, James A.; Keynan, Yoav; Morris, Andrew M.; Rubinstein, Ethan; Jones, Sandra Braun; Garcia, Patricia; Cereceda, M; Fica, Alberto; Mella, Rodrigo Montagna; Barsic, Bruno; Bukovski, Suzana; Krajinovic, Vladimir; Pangercic, Ana; Rudez, Igor; Vincelj, Josip; Freiberger, Tomas; Pol, Jiri; Zaloudikova, Barbora; Ashour, Zainab; El Kholy, Amani; Mishaal, Marwa; Rizk, Hussien; Aissa, Neijla; Alauzet, Corentine; Alla, Francois; Campagnac, Catherine; Doco-Lecompte, Thanh; Selton-Suty, Christine; Casalta, Jean-Paul; Fournier, Pierre-Edouard; Habib, Gilbert; Raoult, Didier; Thuny, Franck; Delahaye, François; Delahaye, Armelle; Vandenesch, Francois; Donal, Erwan; Donnio, Pierre Yves; Michelet, Christian; Revest, Matthieu; Tattevin, Pierre; Violette, Jérémie; Chevalier, Florent; Jeu, Antoine; Sorel, Claire; Tribouilloy, Christophe; Bernard, Yvette; Chirouze, Catherine; Hoen, Bruno; Leroy, Joel; Plesiat, Patrick; Naber, Christoph; Neuerburg, Carl; Mazaheri, Bahram; Naber, Christoph; Neuerburg, Carl; Athanasia, Sofia; Giannitsioti, Efthymia; Mylona, Elena; Paniara, Olga; Papanicolaou, Konstantinos; Pyros, John; Skoutelis, Athanasios; Sharma, Gautam; Francis, Johnson; Nair, Lathi; Thomas, Vinod; Venugopal, Krishnan; Hannan, Margaret; Hurley, John; Gilon, Dan; Israel, Sarah; Korem, Maya; Strahilevitz, Jacob; Rubinstein, Ethan; Strahilevitz, Jacob; Casillo, Roberta; Cuccurullo, Susanna; Dialetto, Giovanni; Durante-Mangoni, Emanuele; Irene, Mattucci; Ragone, Enrico; Tripodi, Marie Françoise; Utili, Riccardo; Cecchi, Enrico; De Rosa, Francesco; Forno, Davide; Imazio, Massimo; Trinchero, Rita; Tebini, Alessandro; Grossi, Paolo; Lattanzio, Mariangela; Toniolo, Antonio; Goglio, Antonio; Raglio, Annibale; Ravasio, Veronica; Rizzi, Marco; Suter, Fredy; Carosi, Giampiero; Magri, Silvia; Signorini, Liana; Baban, Tania; Kanafani, Zeina; Kanj, Souha S.; Yasmine, Mohamad; Abidin, Imran; Tamin, Syahidah Syed; Martínez, Eduardo Rivera; Soto Nieto, Gabriel Israel; van der Meer, Jan T.M.; Chambers, Stephen; Holland, David; Morris, Arthur; Raymond, Nigel; Read, Kerry; Murdoch, David R.; Dragulescu, Stefan; Ionac, Adina; Mornos, Cristian; Butkevich, O.M.; Chipigina, Natalia; Kirill, Ozerecky; Vadim, Kulichenko; Vinogradova, Tatiana; Edathodu, Jameela; Halim, Magid; Lum, Luh-Nah; Tan, Ru-San; Lejko-Zupanc, Tatjana; Logar, Mateja; Mueller-Premru, Manica; Commerford, Patrick; Commerford, Anita; Deetlefs, Eduan; Hansa, Cass; Ntsekhe, Mpiko; Almela, Manuel; Armero, Yolanda; Azqueta, Manuel; Castañeda, Ximena; Cervera, Carlos; del Rio, Ana; Falces, Carlos; Garcia-de-la-Maria, Cristina; Fita, Guillermina; Gatell, Jose M.; Marco, Francesc; Mestres, Carlos A.; Miró, José M.; Moreno, Asuncion; Ninot, Salvador; Paré, Carlos; Pericas, Joan; Ramirez, Jose; Rovira, Irene; Sitges, Marta; Anguera, Ignasi; Font, Bernat; Guma, Joan Raimon; Bermejo, Javier; Bouza, Emilio; Fernández, Miguel Angel Garcia; Gonzalez-Ramallo, Victor; Marín, Mercedes; Muñoz, Patricia; Pedromingo, Miguel; Roda, Jorge; Rodríguez-Créixems, Marta; Solis, Jorge; Almirante, Benito; Fernandez-Hidalgo, Nuria; Tornos, Pilar; de Alarcón, Arístides; Parra, Ricardo; Alestig, Eric; Johansson, Magnus; Olaison, Lars; Snygg-Martin, Ulrika; Pachirat, Orathai; Pachirat, Pimchitra; Pussadhamma, Burabha; Senthong, Vichai; Casey, Anna; Elliott, Tom; Lambert, Peter; Watkin, Richard; Eyton, Christina; Klein, John L.; Bradley, Suzanne; Kauffman, Carol; Bedimo, Roger; Chu, Vivian H.; Corey, G. Ralph; Crowley, Anna Lisa; Douglas, Pamela; Drew, Laura; Fowler, Vance G.; Holland, Thomas; Lalani, Tahaniyat; Mudrick, Daniel; Samad, Zaniab; Sexton, Daniel; Stryjewski, Martin; Wang, Andrew; Woods, Christopher W.; Lerakis, Stamatios; Cantey, Robert; Steed, Lisa; Wray, Dannah; Dickerman, Stuart A.; Bonilla, Hector; DiPersio, Joseph; Salstrom, Sara-Jane; Baddley, John; Patel, Mukesh; Peterson, Gail; Stancoven, Amy; Afonso, Luis; Kulman, Theresa; Levine, Donald; Rybak, Michael; Cabell, Christopher H.; Baloch, Khaula; Chu, Vivian H.; Corey, G. Ralph; Dixon, Christy C.; Fowler, Vance G.; Harding, Tina; Jones-Richmond, Marian; Pappas, Paul; Park, Lawrence P.; Redick, Thomas; Stafford, Judy; Anstrom, Kevin; Athan, Eugene; Bayer, Arnold S.; Cabell, Christopher H.; Chu, Vivian H.; Corey, G. Ralph; Fowler, Vance G.; Hoen, Bruno; Karchmer, A. W.; Miró, José M.; Murdoch, David R.; Sexton, Daniel J.; Wang, Andrew; Bayer, Arnold S.; Cabell, Christopher H.; Chu, Vivian; Corey, G. Ralph; Durack, David T.; Eykyn, Susannah; Fowler, Vance G.; Hoen, Bruno; Miró, José M.; Moreillon, Phillipe; Olaison, Lars; Raoult, Didier; Rubinstein, Ethan; Sexton, Daniel J.

    2015-01-01

    Background. The impact of early valve surgery (EVS) on the outcome of Staphylococcus aureus (SA) prosthetic valve infective endocarditis (PVIE) is unresolved. The objective of this study was to evaluate the association between EVS, performed within the first 60 days of hospitalization, and outcome of SA PVIE within the International Collaboration on Endocarditis–Prospective Cohort Study. Methods. Participants were enrolled between June 2000 and December 2006. Cox proportional hazards modeling that included surgery as a time-dependent covariate and propensity adjustment for likelihood to receive cardiac surgery was used to evaluate the impact of EVS and 1-year all-cause mortality on patients with definite left-sided S. aureus PVIE and no history of injection drug use. Results. EVS was performed in 74 of the 168 (44.3%) patients. One-year mortality was significantly higher among patients with S. aureus PVIE than in patients with non–S. aureus PVIE (48.2% vs 32.9%; P = .003). Staphylococcus aureus PVIE patients who underwent EVS had a significantly lower 1-year mortality rate (33.8% vs 59.1%; P = .001). In multivariate, propensity-adjusted models, EVS was not associated with 1-year mortality (risk ratio, 0.67 [95% confidence interval, .39–1.15]; P = .15). Conclusions. In this prospective, multinational cohort of patients with S. aureus PVIE, EVS was not associated with reduced 1-year mortality. The decision to pursue EVS should be individualized for each patient, based upon infection-specific characteristics rather than solely upon the microbiology of the infection causing PVIE. PMID:25389255

  4. Use of symptom-relieving drugs before and after surgery for urinary incontinence in women: a cohort study

    DEFF Research Database (Denmark)

    Sørensen, Guldberg; Brostrøm, Søren; Kesmodel, Ulrik Schiøler

    2013-01-01

    To describe the use of symptom-relieving drugs (antimuscarinic drugs or duloxetine) before and after surgery for urinary incontinence (UI); and for those with use of antimuscarinic drugs or duloxetine before surgery, to estimate the risk of being a postoperative user, relative to those without use...

  5. Use of antibiotics for urinary tract infection in women undergoing surgery for urinary incontinence - a cohort study

    DEFF Research Database (Denmark)

    Sørensen, Rikke Guldberg; Kesmodel, Ulrik Schiøler; Brostrøm, Søren

    2014-01-01

    OBJECTIVE: To describe the use of antibiotics for urinary tract infection (UTI) before and after surgery for urinary incontinence (UI); and for those with use of antibiotics before surgery, to estimate the risk of treatment for a postoperative UTI, relative to those without use of antibiotics...... from the date of surgery were extracted from a prescription database. MAIN OUTCOME MEASURES: Use of antibiotics for UTI in relation to UI surgery, and the risk of being a postoperative user of antibiotics for UTI among preoperative users. RESULTS: A total of 2151 women had a primary surgical procedure...... for UI; of these 496 (23.1%) were preoperative users of antibiotics for UTI. Among preoperative users, 129 (26%) and 215 (43.3%) also redeemed prescriptions of antibiotics for UTI within 0-60 and 61-365 days after surgery, respectively. Among preoperative non-users, 182 (11.0%) and 235 (14.2%) redeemed...

  6. Socio-demographic and other patient characteristics associated with time between colonoscopy and surgery, and choice of treatment centre for colorectal cancer: a retrospective cohort study

    OpenAIRE

    Goldsbury, David; Harris, Mark Fort; Pascoe, Shane; Olver, Ian; Barton, Michael; Spigelman, Allan; O'Connell, Dianne

    2012-01-01

    Objectives To investigate key patient clinical and demographic characteristics associated with time between colonoscopy and surgery, and choice of treatment centre for colorectal cancer (CRC) patients. This will add to the little published research examining the pathway following CRC diagnosis and prior to surgery. Design Retrospective cohort analysis of linked data. Setting A population-based sample of people diagnosed August 2004 to December 2007 in New South Wales, Australia. Participants ...

  7. Self-reported physical activity and lung function two months after cardiac surgery--a prospective cohort study.

    Science.gov (United States)

    Jonsson, Marcus; Urell, Charlotte; Emtner, Margareta; Westerdahl, Elisabeth

    2014-03-28

    Physical activity has well-established positive health-related effects. Sedentary behaviour has been associated with postoperative complications and mortality after cardiac surgery. Patients undergoing cardiac surgery often suffer from impaired lung function postoperatively. The association between physical activity and lung function in cardiac surgery patients has not previously been reported. Patients undergoing cardiac surgery were followed up two months postoperatively. Physical activity was assessed on a four-category scale (sedentary, moderate activity, moderate regular exercise, and regular activity and exercise), modified from the Swedish National Institute of Public Health's national survey. Formal lung function testing was performed preoperatively and two months postoperatively. The sample included 283 patients (82% male). Two months after surgery, the level of physical activity had increased (p < 0.001) in the whole sample. Patients who remained active or increased their level of physical activity had significantly better recovery of lung function than patients who remained sedentary or had decreased their level of activity postoperatively in terms of vital capacity (94 ± 11% of preoperative value vs. 91 ± 9%; p = 0.03), inspiratory capacity (94 ± 14% vs. 88 ± 19%; p = 0.008), and total lung capacity (96 ± 11% vs. 90 ± 11%; p = 0.01). An increased level of physical activity, compared to preoperative level, was reported as early as two months after surgery. Our data shows that there could be a significant association between physical activity and recovery of lung function after cardiac surgery. The relationship between objectively measured physical activity and postoperative pulmonary recovery needs to be further examined to verify these results.

  8. Predictors, Prognosis, and Management of New Clinically Important Atrial Fibrillation After Noncardiac Surgery: A Prospective Cohort Study.

    Science.gov (United States)

    Alonso-Coello, Pablo; Cook, Deborah; Xu, Shou Chun; Sigamani, Alben; Berwanger, Otavio; Sivakumaran, Soori; Yang, Homer; Xavier, Denis; Martinez, Luz Ximena; Ibarra, Pedro; Rao-Melacini, Purnima; Pogue, Janice; Zarnke, Kelly; Paniagua, Pilar; Ostrander, Jack; Yusuf, Salim; Devereaux, P J

    2017-07-01

    Despite the frequency of new clinically important atrial fibrillation (AF) after noncardiac surgery and its increased association with the risk of stroke at 30 days, there are limited data informing their prediction, association with outcomes, and management. We used the data from the PeriOperative ISchemic Evaluation trial to determine, in patients undergoing noncardiac surgery, the association of new clinically important AF with 30-day outcomes, and to assess management of these patients. We also aimed to derive a clinical prediction rule for new clinically important AF in this population. We defined new clinically important AF as new AF that resulted in symptoms or required treatment. We recorded an electrocardiogram 6 to 12 hours postoperatively and on the 1st, 2nd, and 30th days after surgery. A total of 211 (2.5% [8351 patients]; 95% confidence interval, 2.2%-2.9%) patients developed new clinically important AF within 30 days of randomization (8140 did not develop new AF). AF was independently associated with an increased length of hospital stay by 6.0 days (95% confidence interval, 3.5-8.5 days) and vascular complications (eg, stroke or congestive heart failure). The usage of an oral anticoagulant at the time of hospital discharge among patients with new AF and a CHADS2 score of 0, 1, 2, 3, and ≥4 was 6.9%, 10.2%, 23.0%, 9.4%, and 33.3%, respectively. Two independent predictors of patients developing new clinically important AF were identified (ie, age and surgery). The prediction rule included the following factors and assigned weights: age ≥85 years (4 points), age 75 to 84 years (3 points), age 65 to 74 years (2 points), intrathoracic surgery (3 points), major vascular surgery (2 points), and intra-abdominal surgery (1 point). The incidence of new AF based on scores of 0 to 1, 2, 3 to 4, and 5 to 6 was 0.5%, 1.0%, 3.1%, and 5.3%, respectively. Age and surgery are independent predictors of new clinically important AF in the perioperative setting. A

  9. Long-term safety and efficacy of Gamma Knife surgery in classical trigeminal neuralgia: a 497-patient historical cohort study.

    Science.gov (United States)

    Régis, Jean; Tuleasca, Constantin; Resseguier, Noémie; Carron, Romain; Donnet, Anne; Gaudart, Jean; Levivier, Marc

    2016-04-01

    Gamma Knife surgery (GKS) is one of the surgical alternatives for the treatment of drug-resistant trigeminal neuralgia (TN). This study aims to evaluate the safety and efficacy of GKS in a large population of patients with TN with very long-term clinical follow-up. Between July 1992 and November 2010, 737 patients presenting with TN were treated using GKS. Data were collected prospectively and were further retrospectively evaluated at Timone University Hospital. The frequency and severity of pain, as well as trigeminal nerve function, were evaluated before GKS and regularly thereafter. Radiosurgery using the Gamma Knife (model B, C, 4C, or Perfexion) was performed with the help of both MR and CT targeting. A single 4-mm isocenter was positioned in the cisternal portion of the trigeminal nerve at a median distance of 7.6 mm (range 4-14 mm) anterior to the emergence of the nerve (retrogasserian target). A median maximum dose of 85 Gy (range 70-90 Gy) was prescribed. The safety and efficacy are reported for 497 patients with medically refractory classical TN who were never previously treated by GKS and had a follow-up of at least 1 year. The median age in this series was 68.3 years (range 28.1-93.2 years). The median follow-up period was 43.8 months (range 12-174.4 months). Overall, 456 patients (91.75%) were initially pain free in a median time of 10 days (range 1-180 days). Their actuarial probabilities of remaining pain free without medication at 3, 5, 7, and 10 years were 71.8%, 64.9%, 59.7%, and 45.3%, respectively. One hundred fifty-seven patients (34.4%) who were initially pain free experienced at least 1 recurrence, with a median delay of onset of 24 months (range 0.6-150.1 months). However, the actuarial rate of maintaining pain relief without further surgery was 67.8% at 10 years. The hypesthesia actuarial rate at 5 years was 20.4% and at 7 years reached 21.1%, but remained stable until 14 years with a median delay of onset of 12 months (range 1-65 months

  10. Bronchial obstruction syndrome as a predictor of mortality in cardiac surgery: interim results of prospective cohort study

    Directory of Open Access Journals (Sweden)

    Д. Н. Пономарев

    2016-01-01

    Full Text Available Objective. To investigate the effect of bronchial obstruction syndrome on perioperative characteristics in patients undergoing coronary artery bypass grafting (CABG.Methods. Body plethysmography and spiroergometry at rest were used to study respiratory function and consumption of O2. To evaluate the effectiveness of pulmonary ventilation, the oxygen utilization coefficient of (O2CU was calculated in 178 patients prior to scheduled surgery. The relationship of external ventilation parameters and perioperative clinical characteristics was analyzed. Results. A bronchial obstruction syndrome was detected in 30 (16.9% patients, with 21 (11.2% of them having no chronic obstructive pulmonary disease diagnosis. 4 patients (2.3% with obstructive pulmonary disease had no bronchial obstruction. Thus, chronic obstructive pulmonary disease was misdiagnosed in 13.5% cases. In patients undergoing isolated CABG, negative relationship was revealed between the Tiffno index and hospital stay (regression coefficient –6.9, 95%, confidence interval –14.4… 0.6; p = 0.07. In patients operated with the myocardium stabilized, bimammary grafting tended to increase hospital stay by an average of 4.3 days (95% CI 1.5–7.1; p=0.003. The majority of patients had a low O2CU. O2CU lower than 16.2 ml/l is associated with an increased risk of postoperative atrial fibrillation (AF in the postoperative period (OR 2.96; 95% CI 1.01–9.83; p = 0.04. No significant associations were observed between the degree of bronchial obstruction and the number of perioperative complications. Conclusion. The degree of bronchial obstruction could be positively associated with the length of hospital stay. A critically low level of O2CU is explained by an increased risk of postoperative AF. Further research might result in the identification of predictors for respiratory complications and long-term mortality in patients after CABG.

  11. Laparoscopic colorectal surgery in learning curve: Role of implementation of a standardized technique and recovery protocol. A cohort study

    Directory of Open Access Journals (Sweden)

    Gaetano Luglio

    2015-06-01

    Conclusion: Proper laparoscopic colorectal surgery is safe and leads to excellent results in terms of recovery and short term outcomes, even in a learning curve setting. Key factors for better outcomes and shortening the learning curve seem to be the adoption of a standardized technique and training model along with the strict supervision of an expert colorectal surgeon.

  12. A multicenter prospective cohort study on camera navigation training for key user groups in minimally invasive surgery

    NARCIS (Netherlands)

    Graafland, Maurits; Bok, Kiki; Schreuder, Henk W. R.; Schijven, Marlies P.

    2014-01-01

    Untrained laparoscopic camera assistants in minimally invasive surgery (MIS) may cause suboptimal view of the operating field, thereby increasing risk for errors. Camera navigation is often performed by the least experienced member of the operating team, such as inexperienced surgical residents,

  13. Risk of Post-Discharge Venous Thromboembolism and Associated Mortality in General Surgery: A Population-Based Cohort Study Using Linked Hospital and Primary Care Data in England.

    Science.gov (United States)

    Bouras, George; Burns, Elaine Marie; Howell, Ann-Marie; Bottle, Alex; Athanasiou, Thanos; Darzi, Ara

    2015-01-01

    Trends towards day case surgery and enhanced recovery mean that postoperative venous thromboembolism (VTE) may increasingly arise after hospital discharge. However, hospital data alone are unable to capture adverse events that occur outside of the hospital setting. The National Institute for Health and Care Excellence has suggested the use of primary care data to quantify hospital care-related VTE. Data in surgical patients using these resources is lacking. The aim of this study was to measure VTE risk and associated mortality in general surgery using linked primary care and hospital databases, to improve our understanding of harm from VTE that arises beyond hospital stay. This was a longitudinal cohort study using nationally linked primary care (Clinical Practice Research Datalink, CPRD), hospital administrative (Hospital Episodes Statistics, HES), population statistics (Office of National Statistics, ONS) and National Cancer Intelligence Network databases. Routinely collected information was used to quantify 90-day in-hospital VTE, 90-day post-discharge VTE and 90-day mortality in adults undergoing one of twelve general surgical procedures between 1st April 1997 and 31st March 2012. The earliest postoperative recording of deep vein thrombosis or pulmonary embolism in CPRD, HES and ONS was counted in each patient. Covariates from multiple datasets were combined to derive detailed prediction models for VTE and mortality. Limitation included the capture of VTE presenting to healthcare only and the lack of information on adherence to pharmacological thromboprophylaxis as there was no data linkage to hospital pharmacy records. There were 981 VTE events captured within 90 days of surgery in 168005 procedures (23.7/1000 patient-years). Overall, primary care data increased the detection of postoperative VTE by a factor of 1.38 (981/710) when compared with using HES and ONS only. Total VTE rates ranged between 3.2/1000 patient-years in haemorrhoidectomy to 118

  14. Two-stage revision surgery with preformed spacers and cementless implants for septic hip arthritis: a prospective, non-randomized cohort study

    Directory of Open Access Journals (Sweden)

    Logoluso Nicola

    2011-05-01

    Full Text Available Abstract Background Outcome data on two-stage revision surgery for deep infection after septic hip arthritis are limited and inconsistent. This study presents the medium-term results of a new, standardized two-stage arthroplasty with preformed hip spacers and cementless implants in a consecutive series of adult patients with septic arthritis of the hip treated according to a same protocol. Methods Nineteen patients (20 hips were enrolled in this prospective, non-randomized cohort study between 2000 and 2008. The first stage comprised femoral head resection, debridement, and insertion of a preformed, commercially available, antibiotic-loaded cement hip spacer. After eradication of infection, a cementless total hip arthroplasty was implanted in the second stage. Patients were assessed for infection recurrence, pain (visual analog scale [VAS] and hip joint function (Harris Hip score. Results The mean time between first diagnosis of infection and revision surgery was 5.8 ± 9.0 months; the average duration of follow up was 56.6 (range, 24 - 104 months; all 20 hips were successfully converted to prosthesis an average 22 ± 5.1 weeks after spacer implantation. Reinfection after total hip joint replacement occurred in 1 patient. The mean VAS pain score improved from 48 (range, 35 - 84 pre-operatively to 18 (range, 0 - 38 prior to spacer removal and to 8 (range, 0 - 15 at the last follow-up assessment after prosthesis implantation. The average Harris Hip score improved from 27.5 before surgery to 61.8 between the two stages to 92.3 at the final follow-up assessment. Conclusions Satisfactory outcomes can be obtained with two-stage revision hip arthroplasty using preformed spacers and cementless implants for prosthetic hip joint infections of various etiologies.

  15. Six-Month Outcomes After High-Risk Coronary Artery Bypass Graft Surgery and Preoperative Intra-aortic Balloon Counterpulsation Use: An Inception Cohort Study.

    Science.gov (United States)

    Litton, Edward; Bass, Frances; Delaney, Anthony; Hillis, Graham; Marasco, Silvana; McGuinness, Shay; Myles, Paul S; Reid, Christopher M; Smith, Julian A

    2018-01-05

    To inform the design of a pivotal randomized controlled trial of prophylactic intra-aortic balloon counterpulsation (IABC) in patients undergoing coronary artery bypass graft (CABG) at high risk of postoperative low cardiac output syndrome (LCOS). Inception cohort study. A total of 13 established cardiac centers in Australia, Canada, New Zealand, and the United Kingdom. Adult patients were eligible for inclusion if they were listed for CABG surgery and had 2 or more LCOS risk factors (low ejection fraction, severe left main coronary artery disease, redo sternotomy, unstable angina). Outcomes of interest were a composite outcome of in-hospital mortality, postoperative acute myocardial infarction (AMI), acute kidney injury (AKI), or stroke as well as 6-month vital status and quality of life using the EuroQol 5-dimensional questionnaire (EQ5D). The study included 136 participants over a 29-month period. Overall, in-hospital and 6-month mortality occurred in 7 (5%) and 11 (8%) participants, respectively. The composite outcome occurred in 60 (44%). The mean increase in EQ5D summary index at 6 months was 0.10 (standard deviation 0.24, p = 0.01). Perioperative AMI, AKI, or stroke significantly decreased the odds of a clinically meaningful improvement in quality of life (odds ratio 0.32; 95% confidence interval 0.13-0.79; p = 0.014). Preoperative IABC was used in 39 participants and did not predict postoperative outcomes. The study identified a group of patients at risk of LCOS in whom CABG surgery was associated with a substantial burden of perioperative morbidity. Preoperative IABC use was variable, supporting the need for further research. Copyright © 2018 Elsevier Ltd. All rights reserved.

  16. 1970 British Cohort Study

    Directory of Open Access Journals (Sweden)

    Matt Brown

    2014-10-01

    Full Text Available The 1970 British Cohort Study (BCS70 is one of Britain’s world famous national longitudinal birth cohort studies, three of which are run by the Centre for Longitudinal Studies at the Institute of Education, University of London.  BCS70 follows the lives of more than 17,000 people born in England, Scotland and Wales in a single week of 1970. Over the course of cohort members lives, the BCS70 has collected information on health, physical, educational and social development, and economic circumstances among other factors. Since the birth survey in 1970, there have been nine ‘sweeps’ of all cohort members at ages 5, 10, 16, 26, 30, 34, 38 and most recently at 42. Data has been collected from a number of different sources (the midwife present at birth, parents of the cohort members, head and class teachers, school health service personnel and the cohort members themselves. The data has been collected in a variety of ways including via paper and electronic questionnaires, clinical records, medical examinations, physical measurements, tests of ability, educational assessments and diaries. The majority of BCS70 survey data can be accessed by bona fide researchers through the UK Data Service at the University of Essex.

  17. Pediatric inflammatory bowel disease: Increasing incidence, decreasing surgery rate, and compromised nutritional status: A prospective population-based cohort study 2007-2009

    DEFF Research Database (Denmark)

    Jakobsen, Christian; Paerregaard, Anders; Munkholm, Pia

    2011-01-01

    Background: The aim was to evaluate the incidence, treatment, surgery rate, and anthropometry at diagnosis of children with inflammatory bowel disease (IBD). Methods: Patients diagnosed between January 1, 2007 to December 31, 2009 in Eastern Denmark, Funen, and Aarhus were included from a backgro......Background: The aim was to evaluate the incidence, treatment, surgery rate, and anthropometry at diagnosis of children with inflammatory bowel disease (IBD). Methods: Patients diagnosed between January 1, 2007 to December 31, 2009 in Eastern Denmark, Funen, and Aarhus were included from...... a background population of 668,056 children evaluation of incidence, treatment, and surgery rate, a subcohort from Eastern Denmark was extracted for comparison with a previously published population-based cohort from the same geographical area (1998–2006). Results: In all, 130 children...... in the rate of initiating immunomodulators (IM) within the first year (29.0/100 person-years versus 69.2, P nutritional status at diagnosis compared with the general...

  18. Risk of Post-Discharge Venous Thromboembolism and Associated Mortality in General Surgery: A Population-Based Cohort Study Using Linked Hospital and Primary Care Data in England.

    Directory of Open Access Journals (Sweden)

    George Bouras

    Full Text Available Trends towards day case surgery and enhanced recovery mean that postoperative venous thromboembolism (VTE may increasingly arise after hospital discharge. However, hospital data alone are unable to capture adverse events that occur outside of the hospital setting. The National Institute for Health and Care Excellence has suggested the use of primary care data to quantify hospital care-related VTE. Data in surgical patients using these resources is lacking. The aim of this study was to measure VTE risk and associated mortality in general surgery using linked primary care and hospital databases, to improve our understanding of harm from VTE that arises beyond hospital stay.This was a longitudinal cohort study using nationally linked primary care (Clinical Practice Research Datalink, CPRD, hospital administrative (Hospital Episodes Statistics, HES, population statistics (Office of National Statistics, ONS and National Cancer Intelligence Network databases. Routinely collected information was used to quantify 90-day in-hospital VTE, 90-day post-discharge VTE and 90-day mortality in adults undergoing one of twelve general surgical procedures between 1st April 1997 and 31st March 2012. The earliest postoperative recording of deep vein thrombosis or pulmonary embolism in CPRD, HES and ONS was counted in each patient. Covariates from multiple datasets were combined to derive detailed prediction models for VTE and mortality. Limitation included the capture of VTE presenting to healthcare only and the lack of information on adherence to pharmacological thromboprophylaxis as there was no data linkage to hospital pharmacy records.There were 981 VTE events captured within 90 days of surgery in 168005 procedures (23.7/1000 patient-years. Overall, primary care data increased the detection of postoperative VTE by a factor of 1.38 (981/710 when compared with using HES and ONS only. Total VTE rates ranged between 3.2/1000 patient-years in haemorrhoidectomy to 118

  19. The surgical safety checklist and patient outcomes after surgery: a prospective observational cohort study, systematic review and meta-analysis

    NARCIS (Netherlands)

    Abbott, T. E. F.; Ahmad, T.; Phull, M. K.; Fowler, A. J.; Hewson, R.; Biccard, B. M.; Chew, M. S.; Gillies, M.; Pearse, R. M.; Pearse, Rupert M.; Beattie, Scott; Clavien, Pierre-Alain; Demartines, Nicolas; Fleisher, Lee A.; Grocott, Mike; Haddow, James; Hoeft, Andreas; Holt, Peter; Moreno, Rui; Pritchard, Naomi; Rhodes, Andrew; Wijeysundera, Duminda; Wilson, Matt; Ahmed, Tahania; Everingham, Kirsty; Hewson, Russell; Januszewska, Marta; Phull, Mandeep-Kaur; Halliwell, Richard; Shulman, Mark; Myles, Paul; Schmid, Werner; Hiesmayr, Michael; Wouters, Patrick; de Hert, Stefan; Lobo, Suzana; Fang, Xiangming; Rasmussen, Lars; Futier, Emmanuel; Biais, Matthieu; Venara, Aurélien; Slim, Karem; Sander, Michael; Koulenti, Despoina; Arvaniti, Kostoula; Chan, Mathew; Kulkarni, Atul; Chandra, Susilo; Tantri, Aida; Geddoa, Emad; Abbas, Muntadhar; Della Rocca, Giorgio; Sivasakthi, Datin; Mansor, Marzida; Luna, Pastor; Bouwman, Arthur; Buhre, Wolfgang; Beavis, Vanessa; Campbell, Douglas; Short, Tim; Osinaike, Tunde; Matos, Ricardo; Grigoras, Ioana; Kirov, Mikhail; Protsenko, Denis; Biccard, Bruce; Aldecoa, Cesar; Chew, Michelle; Hofer, Christoph; Hubner, Martin; Ditai, James; Szakmany, Tamas; Fleisher, Lee; Ferguson, Marissa; MacMahon, Michael; Cherian, Ritchie; Currow, Helen; Kanathiban, Kathirgamanathan; Gillespie, David; Pathmanathan, Edward; Phillips, Katherine; Reynolds, Jenifer; Rowley, Joanne; Douglas, Jeanene; Kerridge, Ross; Garg, Sameer; Bennett, Michael; Jain, Megha; Alcock, David; Terblanche, Nico; Cotter, Rochelle; Leslie, Kate; Stewart, Marcelle; Zingerle, Nicolette; Clyde, Antony; Hambidge, Oliver; Rehak, Adam; Cotterell, Sharon; Huynh, Wilson Binh Quan; McCulloch, Timothy; Ben-Menachem, Erez; Egan, Thomas; Cope, Jennifer; Fellinger, Paul; Haisjackl, Markus; Haselberger, Simone; Holaubek, Caroline; Lichtenegger, Paul; Scherz, Florian; Hoffer, Franz; Cakova, Veronika; Eichwalder, Andreas; Fischbach, Norbert; Klug, Reinhold; Schneider, Elisabeth; Vesely, Martin; Wickenhauser, Reinhart; Grubmueller, Karl Gernot; Leitgeb, Marion; Lang, Friedrich; Toro, Nancy; Bauer, Marlene; Laengle, Friedrich; Haberl, Claudia; Mayrhofer, Thomas; Trybus, Christoph; Buerkle, Christian; Forstner, Karin; Germann, Reinhard; Rinoesl, Harald; Schindler, Elke; Trampitsch, Ernst; Bogner, Gerhard; Dankl, Daniel; Duenser, Martin; Fritsch, Gerhard; Gradwohl-Matis, Ilse; Hartmann, Andreas; Hoelzenbein, Thomas; Jaeger, Tarkan; Landauer, Franz; Lindl, Gregor; Lux, Michael; Steindl, Johannes; Stundner, Ottokar; Szabo, Christian; Bidgoli, Jawad; Verdoodt, Hans; Forget, Patrice; Kahn, David; Lois, Fernande; Momeni, Mona; Prégardien, Caroline; Pospiech, Audrey; Steyaert, Arnaud; Veevaete, Laurent; de Kegel, Dirk; de Jongh, Karen; Foubert, Luc; Smitz, Carine; Vercauteren, Marcel; Poelaert, Jan; van Mossevelde, Veerle; Abeloos, Jacques; Bouchez, Stefaan; Coppens, Marc; de Baerdemaeker, Luc; Deblaere, Isabel; de Bruyne, Ann; Fonck, Kristine; Heyse, Bjorn; Jacobs, Tom; Lapage, Koen; Moerman, Anneliese; Neckebroek, Martine; Parashchanka, Aliaksandra; Roels, Nathalie; van den Eynde, Nancy; Vandenheuvel, Michael; Limmen, JurgenVan; Vanluchene, Ann; Vanpeteghem, Caroline; Wyffels, Piet; Huygens, Christel; Vandenbempt, Punitha; van de Velde, Marc; Dylst, Dimitri; Janssen, Bruno; Schreurs, Evelien; Aleixo, Fábia Berganton; Candido, Keulle; Batista, Hugo Dias; Guimarães, Mario; Guizeline, Jaqueline; Hoffmann, João; Lobo, Francisco Ricardo Marques; Nascimento, Vinícius; Nishiyama, Katia; Pazetto, Lucas; Souza, Daniela; Rodrigues, Rodrigo Souza; Vilela Dos Santos, Ana Maria; Jardim, Jaquelline; Sá Malbouisson, Luiz Marcelo; Silva, Joao; Nascimento Junior, Paulo do; Baio, Thalissa Hermínia; Pereira de Castro, Gabriel Isaac; Watanabe Oliveira, Henri Roger; Amendola, Cristina Prata; Cardoso, Gutemberg; Ortega, Daniela; Brotto, Ana Flavia; de Oliveira, Mirella Cristine; Réa-Neto, Álvaro; Dias, Fernando; Travi, Maria Eduarda; Zerman, Luiza; Azambuja, Pedro; Knibel, Marcos Freitas; Martins, Antonio; Almeida, William; Neto, Calim Neder; Tardelli, Maria Angela; Caser, Eliana; Machado, Marcio; Aguzzoli, Crisitiano; Baldisserotto, Sérgio; Tabajara, Fernanda Beck; Bettega, Fernanda; Rodrigues Júnior, La Hore Correa; de Gasperi, Julia; Faina, Lais; Nolasco, Marcos Farias; Ferreira da Costa Fischer, Bruna; Fosch de Campos Ferreira, Mariana; Hartmann, Cristina; Kliemann, Marta; Hubert Ribeiro, Gustavo Luis; Fraga, Julia Merladete; Netto, Thiago Motta; Pozza, Laura Valduga; Wendling, Paulo Rafael; Azevedo, Caroline; Garcia, Juliana; Lopes, Marcel; Maia, Bernardo; Maselli, Paula; Melo, Ralph; Mendes, Weslley; Neves, Matheus; Ney, Jacqueline; Piras, Claudio; Applewhaite, Christopher; Carr, Adrienne; Chow, Lorraine; Duttchen, Kaylene; Foglia, Julena; Greene, Michael; Hinther, Ashley; Houston, Kendra; McCormick, Thomas Jared; Mikhayel, Jennifer; Montasser, Sam; Ragan, Alex; Suen, Andrew; Woolsey, Adrianna; Yu, Hai Chuan; Funk, Duane; Kowalski, Stephen; Legaspi, Regina; McDonald, Heather; Siddiqui, Faisal; Pridham, Jeremy; Rowe, Bernadette; Sampson, Sonia; Thiessen, Barton; Zbitnew, Geoff; Bernard, Andre; George, Ronald; Jones, Philip; Moor, Rita; Siddiqui, Naveed; Wolfer, Alexandra; Tran, Diem; Winch, Denyse; Dobson, Gary; McCormick, Thomas; Montasser, Osama; Hall, Richard; Baghirzada, Leyla; Curley, Gerard; Dai, Si Yuan; Hare, Gregory; Lee, Esther; Shastri, Uma; Tsui, Albert; Yagnik, Anmol; Alvares, Danielle; Choi, Stephen; Dwyer, Heather; Flores, Kathrina; McCartney, Colin; Somascanthan, Priya; Carroll, Jo; Pazmino-Canizares, Janneth; Ami, Noam; Chan, Vincent; Perlas, Anahi; Argue, Ruth; Huang, Yang; Lavis, Katie; Mayson, Kelly; Cao, Ying; Gao, Hong; Hu, Tingju; Lv, Jie; Yang, Jian; Yang, Yang; Zhong, Yi; Zhou, Jing; Zou, Xiaohua; He, Miao; Li, Xiaoying; Luo, Dihuan; Wang, Haiying; Yu, Tian; Chen, Liyong; Wang, Lijun; Cai, Yunfei; Cao, Zhongming; Li, Yanling; Lian, Jiaxin; Sun, Haiyun; Wang, Sheng; Wang, Zhipeng; Wang, Kenru; Zhu, Yi; Du, Xindan; Fan, Hao; Fu, Yunbin; Huang, Lixia; Huang, Yanming; Hwan, Haifang; Luo, Hong; Qu, Pi-Sheng; Tao, Fan; Wang, Zhen; Wang, Guoxiang; Wang, Shun; Zhang, Yan; Zhang, Xiaolin; Chen, Chao; Wang, Weixing; Liu, Zhengyuan; Fan, Lihua; Tang, Jing; Chen, Yijun; Chen, Yongjie; Han, Yangyang; Huang, Changshun; Liang, Guojin; Shen, Jing; Wang, Jun; Yang, Qiuhong; Zhen, Jungang; Zhou, Haidong; Chen, Junping; Chen, Zhang; Li, Xiaoyu; Meng, Bo; Ye, Haiwang; Zhang, Xiaoyan; Bi, Yanbing; Cao, Jianqiao; Guo, Fengying; Lin, Hong; Liu, Yang; Lv, Meng; Shi, Pengcai; Song, Xiumei; Sun, Chuanyu; Sun, Yongtao; Wang, Yuelan; Wang, Shenhui; Zhang, Min; Chen, Rong; Hou, Jiabao; Leng, Yan; Meng, Qing-Tao; Qian, Li; Shen, Zi-Ying; Xia, Zhong-Yuan; Xue, Rui; Zhang, Yuan; Zhao, Bo; Zhou, Xian-Jin; Chen, Qiang; Guo, Huinan; Guo, Yongqing; Qi, Yuehong; Wang, Zhi; Wei, Jianfeng; Zhang, Weiwei; Zheng, Lina; Bao, Qi; Chen, Yaqiu; Chen, Yijiao; Fei, Yue; Hu, Nianqiang; Hu, Xuming; Lei, Min; Li, Xiaoqin; Lv, Xiaocui; Miao, Fangfang; Ouyang, Lingling; Qian, Lu; Shen, Conyu; Sun, Yu; Wang, Yuting; Wang, Dong; Wu, Chao; Xu, Liyuan; Yuan, Jiaqi; Zhang, Lina; Zhang, Huan; Zhang, Yapping; Zhao, Jinning; Zhao, Chong; Zhao, Lei; Zheng, Tianzhao; Zhou, Dachun; Zhou, Haiyan; Zhou, Ce; Lu, Kaizhi; Zhao, Ting; He, Changlin; Chen, Hong; Chen, Shasha; Cheng, Baoli; He, Jie; Jin, Lin; Li, Caixia; Li, Hui; Pan, Yuanming; Shi, Yugang; Wen, Xiao Hong; Wu, Shuijing; Xie, Guohao; Zhang, Kai; Zhao, Bing; Lu, Xianfu; Chen, Feifei; Liang, Qisheng; Lin, Xuewu; Ling, Yunzhi; Liu, Gang; Tao, Jing; Yang, Lu; Zhou, Jialong; Chen, Fumei; Cheng, Zhonggui; Dai, Hanying; Feng, Yunlin; Hou, Benchao; Gong, Haixia; Hu, Chun Hua; Huang, Haijin; Huang, Jian; Jiang, Zhangjie; Li, Mengyuan; Lin, Jiamei; Liu, Mei; Liu, Weicheng; Liu, Zhen; Liu, Zhiyi; Luo, Foquan; Ma, Longxian; Min, Jia; Shi, Xiaoyun; Song, Zhiping; Wan, Xianwen; Xiong, Yingfen; Xu, Lin; Yang, Shuangjia; Zhang, Qin; Zhang, Hongyan; Zhang, Huaigen; Zhang, Xuekang; Zhao, Lili; Zhao, Weihong; Zhao, Weilu; Zhu, Xiaoping; Bai, Yun; Chen, Linbi; Chen, Sijia; Dai, Qinxue; Geng, Wujun; Han, Kunyuan; He, Xin; Huang, Luping; Ji, Binbin; Jia, Danyun; Jin, Shenhui; Li, Qianjun; Liang, Dongdong; Luo, Shan; Lwang, Lulu; Mo, Yunchang; Pan, Yuanyuan; Qi, Xinyu; Qian, Meizi; Qin, Jinling; Ren, Yelong; Shi, Yiyi; Wang, Junlu; Wang, Junkai; Wang, Leilei; Xie, Junjie; Yan, Yixiu; Yao, Yurui; Zhang, Mingxiao; Zhao, Jiashi; Zhuang, Xiuxiu; Ai, Yanqiu; Du, Fang; He, Long; Huang, Ledan; Li, Zhisong; Li, Huijuan; Li, Yetong; Li, Liwei; Meng, Su; Yuan, Yazhuo; Zhang, Enman; Zhang, Jie; Zhao, Shuna; Ji, Zhenrong; Pei, Ling; Wang, Li; Chen, Chen; Dong, Beibei; Li, Jing; Miao, Ziqiang; Mu, Hongying; Qin, Chao; Su, Lin; Wen, Zhiting; Xie, Keliang; Yu, Yonghao; Yuan, Fang; Hu, Xianwen; Zhang, Ye; Xiao, Wangpin; Zhu, Zhipeng; Dai, Qingqing; Fu, Kaiwen; Hu, Rong; Hu, Xiaolan; Huang, Song; Li, Yaqi; Liang, Yingping; Yu, Shuchun; Guo, Zheng; Jing, Yan; Tang, Na; Wu, Jie; Yuan, Dajiang; Zhang, Ruilin; Zhao, Xiaoying; Li, Yuhong; Bai, Hui-Ping; Liu, Chun-Xiao; Liu, Fei-Fei; Ren, Wei; Wang, Xiu-Li; Xu, Guan-Jie; Hu, Na; Li, Bo; Ou, Yangwen; Tang, Yongzhong; Yao, Shanglong; Zhang, Shihai; Kong, Cui-Cui; Liu, Bei; Wang, Tianlong; Xiao, Wei; Lu, Bo; Xia, Yanfei; Zhou, Jiali; Cai, Fang; Chen, Pushan; Hu, Shuangfei; Wang, Hongfa; Xu, Qiong; Hu, Liu; Jing, Liang; Li, Bin; Liu, Qiang; Liu, Yuejiang; Lu, Xinjian; Peng, Zhen Dan; Qiu, Xiaodong; Ren, Quan; Tong, Youliang; Wang, Jin; Wen, Yazhou; Wu, Qiong; Xia, Jiangyan; Xie, Jue; Xiong, Xiapei; Xu, Shixia; Yang, Tianqin; Ye, Hui; Yin, Ning; Yuan, Jing; Zeng, Qiuting; Zhang, Baoling; Zheng, Kang; Cang, Jing; Chen, Shiyu; Fan, Yu; Fu, Shuying; Ge, Xiaodong; Guo, Baolei; Huang, Wenhui; Jiang, Linghui; Jiang, Xinmei; Liu, Yi; Pan, Yan; Ren, Yun; Shan, Qi; Wang, Jiaxing; Wang, Fei; Wu, Chi; Zhang, Xiaoguang; Christiansen, Ida Cecilie; Granum, Simon Nørgaard; Rasmussen, Bodil Steen; Daugaard, Morten; Gambhir, Rajiv; Brandsborg, Birgitte; Steingrímsdóttir, Guðný Erla; Jensen-Gadegaard, Peter; Olsen, Karsten Skovgaard; Siegel, Hanna; Eskildsen, Katrine Zwicky; Gätke, Mona Ring; Wibrandt, Ida; Heintzelmann, Simon Bisgaard; Wiborg Lange, Kai Henrik; Lundsgaard, Rune Sarauw; Amstrup-Hansen, Louise; Hovendal, Claus; Larsen, Michael; Lenstrup, Mette; Kobborg, Tina; Larsen, Jens Rolighed; Pedersen, Anette Barbre; Smith, Søren Hübertz; Oestervig, Rebecca Monett; Afshari, Arash; Andersen, Cheme; Ekelund, Kim; Secher, Erik Lilja; Beloeil, Helene; Lasocki, Sigismond; Ouattara, Alexandre; Sineus, Marlene; Molliex, Serge; Legouge, Marie Lim; Wallet, Florent; Tesniere, Antoine; Gaudin, Christophe; Lehur, Paul; Forsans, Emma; de Rudnicki, Stéphane; Maudet, Valerie Serra; Mutter, Didier; Sojod, Ghassan; Ouaissi, Mehdi; Regimbeau, Jean-Marc; Desbordes, Jacques; Comptaer, Nicolas; Manser, Diae El; Ethgen, Sabine; Lebuffe, Gilles; Auer, Patrick; Härtl, Christine; Deja, Maria; Legashov, Kirill; Sonnemann, Susanne; Wiegand-Loehnert, Carola; Falk, Elke; Habicher, Marit; Angermair, Stefan; Laetsch, Beatrix; Schmidt, Katrin; von Heymann, Christian; Ramminger, Axel; Jelschen, Florian; Pabel, Svenja; Weyland, Andreas; Czeslick, Elke; Gille, Jochen; Malcharek, Michael; Sablotzki, Armin; Lueke, Katharina; Wetzel, Peter; Weimann, Joerg; Lenhart, Franz-Peter; Reichle, Florian; Schirmer, Frederike; Hüppe, Michael; Klotz, Karl; Nau, Carla; Schön, Julika; Mencke, Thomas; Wasmund, Christina; Bankewitz, Carla; Baumgarten, Georg; Fleischer, Andreas; Guttenthaler, Vera; Hack, Yvonne; Kirchgaessner, Katharina; Männer, Olja; Schurig-Urbaniak, Marlen; Struck, Rafael; van Zyl, Rebekka; Wittmann, Maria; Goebel, Ulrich; Harris, Sarah; Veit, Siegfried; Andreadaki, Evangelia; Souri, Flora; Katsiadramis, Ioannis; Skoufi, Anthi; Vasileiou, Maria; Aimoniotou-Georgiou, Eleni; Katsourakis, Anastasios; Veroniki, Fotini; Vlachogianni, Glyceria; Petra, Konstantina; Chlorou, Dimitra; Oloktsidou, Eirini; Ourailoglou, Vasileios; Papapostolou, Konstantinos; Tsaousi, Georgia; Daikou, Panagoula; Dedemadi, Georgia; Kalaitzopoulos, Ioannis; Loumpias, Christos; Bristogiannis, Sotirios; Dafnios, Nikolaos; Gkiokas, Georgios; Kontis, Elissaios; Kozompoli, Dimitra; Papailia, Aspasia; Theodosopoulos, Theodosios; Bizios, Christol; Koutsikou, Anastasia; Moustaka, Aleaxandra; Plaitakis, Ioannis; Armaganidis, Apostolos; Christodoulopoulou, Theodora; Lignos, Mihail; Theodorakopoulou, Maria; Asimakos, Andreas; Ischaki, Eleni; Tsagkaraki, Angeliki; Zakynthinos, Spyros; Antoniadou, Eleni; Koutelidakis, Ioannis; Lathyris, Dimitrios; Pozidou, Irene; Voloudakis, Nikolaos; Dalamagka, Maria; Elena, Gkonezou; Chronis, Christos; Manolakaki, Dimitra; Mosxogiannidis, Dimitris; Slepova, Tatiana; Tsakiridou, Isaia-Sissy; Lampiri, Claire; Vachlioti, Anastasia; Panagiotakis, Christos; Sfyras, Dimitrios; Tsimpoukas, Fotios; Tsirogianni, Athanasia; Axioti, Elena; Filippopoulos, Andreas; Kalliafa, Elli; Kassavetis, George; Katralis, Petros; Komnos, Ioannis; Pilichos, Georgios; Ravani, Ifigenia; Totis, Antonis; Apagaki, Eymorfia; Efthymiadi, Andromachi; Kampagiannis, Nikolaos; Paraforou, Theoniki; Tsioka, Agoritsa; Georgiou, Georgios; Vakalos, Aristeidis; Bairaktari, Aggeliki; Charitos, Efthimios; Markou, George; Niforopoulou, Panagiota; Papakonstantinou, Nikolaos; Tsigou, Evdoxia; Xifara, Archontoula; Zoulamoglou, Menelaos; Gkioni, Panagiota; Karatzas, Stylianos; Kyparissi, Aikaterini; Mainas, Efstratios; Papapanagiotou, Ioannis; Papavasilopoulou, Theonymfi; Fragandreas, George; Georgopoulou, Eleni; Katsika, Eleni; Psarras, Kyriakos; Synekidou, Eirini; Verroiotou, Maria; Vetsiou, Evangelia; Zaimi, Donika; Anagnou, Athina; Apostolou, Konstantinos; Melissopoulou, Theodora; Rozenberg, Theophilos; Tsigris, Christos; Boutsikos, Georgios; Kalles, Vasileios; Kotsalas, Nikolaos; Lavdaiou, Christina; Paikou, Fotini; Panagou, Georgia-Laura; Spring, Anna; Botis, Ioannis; Drimala, Maria; Georgakakis, Georgios; Kiourtzieva, Ellada; Ntouma, Panagiota; Prionas, Apostolos; Xouplidis, Kyriakos; Dalampini, Eleftheria; Giannaki, Chrysavgi; Iasonidou, Christina; Ioannidis, Orestis; Lavrentieva, Athina; Lavrentieva, Athena; Papageorgiou, George; Kokkinoy, Maria; Stafylaraki, Maria; Gaitanakis, Stylianos; Karydakis, Periclis; Paltoglou, Josef; Ponireas, Panagiotis; Chaloulis, Panagiotis; Provatidis, Athanasios; Sousana, Anisoglou; Gardikou, Varvara Vanessa; Konstantivelli, Maria; Lataniotou, Olga; Lisari, Elisavet; Margaroni, Maria; Stamatiou, Konstantinos; Nikolaidis, Edouardos; Pnevmatikos, Ioannis; Sertaridou, Eleni; Andreou, Alexandros; Arkalaki, Eleni; Athanasakis, Elias; Chaniotaki, Fotini; Chatzimichali, Chatzimichali Aikaterini; Christofaki, Maria; Dermitzaki, Despina; Fiorentza, Klara; Frantzeskos, Georgios; Geromarkaki, Elisavet; Kafkalaki, Kalliopi; Kalogridaki, Marina; Karydi, Konstyllia; Kokkini, Sofia; Kougentakis, Georgios; Lefaki, Tatiana; Lilitsis, Emmanouhl; Makatounaki, Aikaterini; Malliotakis, Polychronis; Michelakis, Dimosthenis; Neonaki, Maria; Nyktari, Vasileia; Palikyra, Iliana; Papadakis, Eleftherios; Papaioannou, Alexandra; Sfakianakis, Konstantinos; Sgouraki, Maria; Souvatzis, Xenia; Spartinou, Anastasia; Stefanidou, Nefeli; Syrogianni, Paulina; Tsagkaraki, Georgia; Arnaoutoglou, Elena; Arnaoutoglou, Christina; Bali, Christina; Bouris, Vasilios; Doumos, Rodamanthos; Gkini, Konstantia-Paraskevi; Kapaktsi, Clio; Koulouras, Vasilios; Lena, Arian; Lepida, Dimitra; Michos, Evangelos; Papadopoulos, Dimitrios; Paschopoulos, Minas; Rompou, Vaia Aliki; Siouti, Ioanna; Tsampalas, Stavros; Ververidou, Ourania; Zilis, Georgios; Charlalampidoy, Alexandra; Christodoulidis, Gregory; Flossos, Andreas; Stamoulis, Konstantinos; Chan, Matthew; Tsang, Man Shing Caleb; Tsang, Man Shing; Lai, Man Ling; Yip, Chi Pang; Heymans Chan, Hey Man; Law, Bassanio; Li, Wing Sze; Chu, Hiu Man; Koo, Emily Gar Yee; Lam, Chi Cheong Joe; Cheng, Ka Ho; Lam, Tracy; Chu, Susanna; Lam, Wing Yan; Wong, Kin Wai Kevin; Kwok, Dilys; Hung, Ching Yue Janice; Chan, Wai Kit Jacky; Wong, Wing Lam; Chung, Chun Kwong Eric; Ma, Shu Kai; Kaushik, Shuchi; Shah, Bhagyesh; Shah, Dhiren; Shah, Sanjay; Ar, Praburaj; Muthuchellappan, Radhakrishnan; Agarwal, Vandana; Divatia, Jigeeshu; Mishra, Sanghamitra; Nimje, Ganesh; Pande, Swati; Savarkar, Sukhada; Shrivastava, Aditi; Thomas, Martin; Yegnaram, Shashikant; Hidayatullah, Rahmat; Puar, Nasman; Niman, Sumara; Indra, Imai; Hamzah, Zulkarnain; Yuliana, Annika; Abidin, Ucu Nurhadiat; Dursin, Ade Nurkacan; Kurnia, Andri; Susanti, Ade; Handayani, Dini; Alit, Mahaalit Aribawa; Arya, Aryabiantara; Senapathi, Tjokorda Gde Agung; Utara, Utara Hartawan; Wid, Widnyana Made; Wima, Semarawima; Wir, Wiryana Made; Jehosua, Brillyan; Kaunang, Jonathan; Lantang, Eka Yudha; Najoan, Rini; Waworuntu, Neil; Awad, Hadi; Fuad, Akram; Geddoa, Burair; Khalaf, Abdel Razzaq; Al Hussaini, Sabah; Albaj, Safauldeensalem; Kenber, Maithem; Bettinelli, Alessandra; Spadaro, Savino; AlbertoVolta, Carlo; Giancarlo, Luigi; Sottosanti, Vicari; Copetti, Elisa; Spagnesi, Lorenzo; Toretti, Ilaria; Alloj, Chiara; Cardellino, Silvano; Carmino, Livio; Costanzo, Eleonora; Fanfani, Lucia Caterina; Novelli, Maria Teresa; Roasio, Agostino; Bellandi, Mattia; Beretta, Luigi; Bignami, Elena; Bocchino, Speranza; Cabrini, Luca; Corti, Daniele; Landoni, Giovanni; Meroni, Roberta; Moizo, Elena; Monti, Giacomo; Pintaudi, Margherita; Plumari, Valentina Paola; Taddeo, Daiana; Testa, Valentina; Winterton, Dario; Zangrillo, Alberto; Cloro, Luigi Maria; Colangelo, Chiara; Colangelo, Antonio; Rotunno, Giuseppe; Paludi, Miguel Angel; Maria, Cloro Paolo; Pata, Antonio; Parrini, Vieri; Gatta, Alessandro; Nastasi, Mauro; Tinti, Carla; Baroselli, Antonio; Arrigo, Mario; Benevento, Angelo; Bottini, Corrado; Cannavo', Maurizio; Gastaldi, Christian; Marchesi, Alessandro; Pascazio, Angelantonio; Pata, Francesco; Pozzi, Emilio; Premoli, Alberto; Tessera, Gaetano; Boschi, Luca; D'Andrea, Rocco; Ghignone, Federico; Poggioli, Gilberto; Sibilio, Andrea; Taffurelli, Mario; Ugolini, Giampaolo; Ab Majid, Mohd Azuan; Ab Rahman, Rusnah; Joseph, James; Pathan, Furquan; Sybil Shah, Mohammad Hafizshah; Yap, Huey Ling; Cheah, Seleen; Chin, Im Im; Looi, Ji Keon; Tan, Siew Ching; Visvalingam, Sheshendrasurian; Kwok, Fan Yin; Lee, Chew Kiok; Tan, Tse Siang; Wong, Sze Meng; Abdullah, Noor Hairiza; Liew, Chiat Fong; Luxuman, Lovenia; Mohd Zin, Nor Hafizah; Norddin, Muhamad Faiz; Raja Alias, Raja Liza; Wong, Juan Yong; Yong, Johnny; Bin Mustapha, Mohd Tarmimi; Chan, Weng Ken; Dzulkipli, Norizawati; Kuan, Pei Xuan; Lee, Yew Ching; Alias, Anita; Guok, Eng Ching; Jee, Chiun Chen; Ramon, Brian Rhadamantyne; Wong, Cheng Weng; Abd Ghafar, Fara Nur Idayu; Aziz, Faizal Zuhri; Hussain, Nabilah; Lee, Hooi Sean; Sukawi, Ismawaty; Woon, Yuan Liang; Abd Hadi, Husni Zaeem; Ahmad Azam, Ummi Azmira; Alias, Abdul Hafiz; Kesut, Saiful Aizar; Lee, Jun May; Ooi, Dar Vin; Sulaiman, Hetty Ayuni; Lih, Tengku Alini Tengku; Veerakumaran, Jeyaganesh; Rojas, Eder; Resendiz, Gerardo Esteban Alvarez; Zapata, Darcy Danitza Mari; López, Julio Cesar Jesús Aguilar; Flores, Armando Adolfo Alvarez; Amador, Juan Carlos Bravo; Avila, Erendira Jocelin Dominguez; Aquino, Laura Patricia González; Rodriguez, Ricardo Lopez; Landa, Mariana Torres; Urias, Emma; Hollmann, Markus; Hulst, Abraham; Preckel, Benedikt; Koopman-van Gemert, Ankie; Buise, Marc; Tolenaar, Noortje; Weber, Eric; de Fretes, Jennifer; Houweling, Peter; Ormskerk, Patricia; van Bommel, Jasper; Lance, Marcus; Smit-Fun, Valerie; van Zundert, Tom; Baas, Peter; Donald de Boer, Hans; Sprakel, Joost; Elferink-Vonk, Renske; Noordzij, Peter; van Zeggeren, Laura; Brand, Bastiaan; Spanjersberg, Rob; ten Bokkel-Andela, Janneke; Numan, Sandra; van Klei, Wilton; van Zaane, Bas; Boer, Christa; van Duivenvoorde, Yoni; Hering, Jens Peter; van Rossum, Sylvia; Zonneveldt, Harry; Campbell, Doug; Hoare, Siobhan; Santa, Sahayam; Ali, Marlynn; Allen, Sara Jane; Bell, Rachel; Choi, Hyun-Min David; Drake, Matthew; Farrell, Helen; Hayes, Katia; Higgie, Kushlin; Holmes, Kerry; Jenkins, Nicole; Kim, Chang Joon; Kim, Steven; Law, Kiew Chai; McAllister, Davina; Park, Karen; Pedersen, Karen; Pfeifer, Leesa; Pozaroszczyk, Anna; Salmond, Timothy; Steynor, Martin; Tan, Michael; Waymouth, Ellen; Ab Rahman, Ahmad Sufian; Armstrong, John; Dudson, Rosie; Jenkins, Nia; Nilakant, Jayashree; Richard, Seigne; Virdi, Pardeep; Dixon, Liane; Donohue, Roana; Farrow, Mehreen; Kennedy, Ross; Marissa, Henderson; McKellow, Margie; Nicola, Delany; Pascoe, Rebecca; Roberts, Stephen John; Rowell, George; Sumner, Matthew; Templer, Paul; Chandrasekharan, Shardha; Fulton, Graham; Jammer, Ib; More, Richard; Wilson, Leona; Chang, Yuan Hsuan; Foley, Julia; Fowler, Carolyn; Panckhurst, Jonathan; Sara, Rachel; Stapelberg, Francois; Cherrett, Veronica; Ganter, Donna Louise; McCann, Lloyd; Gilmour, Fiona; Lumsden, Rachelle; Moores, Mark; Olliff, Sue; Sardareva, Elitza; Tai, Joyce; Wikner, Matthew; Wong, Christopher; Chaddock, Mark; Czepanski, Carolyn; McKendry, Patrick; Polakovic, Daniel; Polakovich, Daniel; Robert, Axe; Belda, Margarita Tormo; Norton, Tracy; Alherz, Fadhel; Barneto, Lisa; Ramirez, Alberto; Sayeed, Ahmed; Smith, Nicola; Bennett, Cambell; McQuoid, Shane; Jansen, Tracy-Lee; Nico, Zin; Scott, John; Freschini, David; Freschini, Angela; Hopkins, Brian; Manson, Lara; Stoltz, Deon; Bates, Alexander; Davis, Simon; Freeman, Victoria; McGaughran, Lynette; Williams, Maya; Sharma, Swarna Baskar; Burrows, Tom; Byrne, Kelly; English, Duane; Johnson, Robert; Manikkam, Brendon; Naidoo, Shaun; Rumball, Margot; Whittle, Nicola; Franks, Romilla; Gibson-Lapsley, Hannah; Salter, Ryan; Walsh, Dean; Cooper, Richard; Perry, Katherine; Obobolo, Amos; Sule, Umar Musa; Ahmad, Abdurrahman; Atiku, Mamuda; Mohammed, Alhassan Datti; Sarki, Adamu Muhammad; Adekola, Oyebola; Akanmu, Olanrewaju; Durodola, Adekunle; Olukoju, Olusegun; Raji, Victor; Olajumoke, Tokunbo; Oyebamiji, Emmanuel; Adenekan, Anthony; Adetoye, Adedapo; Faponle, Folayemi; Olateju, Simeon; Owojuyigbe, Afolabi; Talabi, Ademola; Adenike, Odewabi; Adewale, Badru; Collins, Nwokoro; Ezekiel, Emmanuel; Fatungase, Oluwabunmi Motunrayo; Grace, Anuforo; Sola, Sotannde; Stella, Ogunmuyiwa; Ademola, Adeyinka; Adeolu, Augustine A.; Adigun, Tinuola; Akinwale, Mukaila; Fasina, Oluyemi; Gbolahan, Olalere; Idowu, Olusola; Olonisakin, Rotimi Peter; Osinaike, Babatunde Babasola; Asudo, Felicia; Mshelia, Danladi; Abdur-Rahman, Lukman; Agodirin, Olayide; Bello, Jibril; Bolaji, Benjamin; Oyedepo, Olanrewaju Olubukola; Ezike, Humphrey; Iloabachie, Ikechukwu; Okonkwo, Ikemefuna; Onuora, Elias; Onyeka, Tonia; Ugwu, Innocent; Umeh, Friday; Alagbe-Briggs, Olubusola; Dodiyi-Manuel, Amabra; Echem, Richard; Obasuyi, Bright; Onajin-Obembe, Bisola; Bandeira, Maria Expedito; Martins, Alda; Tomé, Miguel; Costa, Ana Cristina Miranda Martins; Krystopchuk, Andriy; Branco, Teresa; Esteves, Simao; Melo, Marco António; Monte, Júlia; Rua, Fernando; Martins, Isabel; Pinho-Oliveira, Vítor Miguel; Rodrigues, Carla Maria; Cabral, Raquel; Marques, Sofia; Rêgo, Sara; Jesus, Joana Sofia Teixeira; Marques, Maria Conceição; Romao, Cristina; Dias, Sandra; Santos, Ana Margarida; Alves, Maria Joao; Salta, Cristina; Cruz, Salome; Duarte, Célia; Paiva, António Armando Furtado; Cabral, Tiago do Nascimento; Faria E Maia, Dionisio; Correia da Silva, Rui Freitas Mendonça; Langner, Anuschka; Resendes, Hernâni Oliveira; Soares, Maria da Conceição; Abrunhosa, Alexandra; Faria, Filomena; Miranda, Lina; Pereira, Helena; Serra, Sofia; Ionescu, Daniela; Margarit, Simona; Mitre, Calin; Vasian, Horatiu; Manga, Gratiela; Stefan, Andreea; Tomescu, Dana; Filipescu, Daniela; Paunescu, Marilena-Alina; Stefan, Mihai; Stoica, Radu; Gavril, Laura; Pătrășcanu, Emilia; Ristescu, Irina; Rusu, Daniel; Diaconescu, Ciresica; Iosep, Gabriel Florin; Pulbere, Dorin; Ursu, Irina; Balanescu, Andreea; Grintescu, Ioana; Mirea, Liliana; Rentea, Irina; Vartic, Mihaela; Lupu, Mary-Nicoleta; Stanescu, Dorin; Streanga, Lavinea; Antal, Oana; Hagau, Natalia; Patras, Dumitru; Petrisor, Cristina; Tosa, Flaviu; Tranca, Sebastian; Copotoiu, Sanda Maria; Ungureanu, Liviu Lucian; Harsan, Cristian Remus; Papurica, Marius; Cernea, Daniela Denisa; Dragoescu, Nicoleta Alice; CarmenVaida, Laura Aflori; Ciobotaru, Oana Roxana; Aignatoaie, Mariana; Carp, Cristina Paula; Cobzaru, Isabelle; Mardare, Oana; Purcarin, Bianca; Tutunaru, Valentin; Ionita, Victor; Arustei, Mirela; Codita, Anisoara; Busuioc, Mihai; Chilinciuc, Ion; Ciobanu, Cristina; Belciu, Ioana; Tincu, Eugen; Blaj, Mihaela; Grosu, Ramona-Mihaela; Sandu, Gigel; Bruma, Dana; Corneci, Dan; Dutu, Madalina; Krepil, Adriana; Copaciu, Elena; Dumitrascu, Clementina Oana; Jemna, Ramona; Mihaescu, Florentina; Petre, Raluca; Tudor, Cristina; Ursache, Elena; Kulikov, Alexander; Lubnin, Andrey; Grigoryev, Evgeny; Pugachev, Stanislav; Tolmasov, Alexander; Hussain, Ayyaz; Ilyina, Yana; Roshchina, Anna; Iurin, Aleksandr; Chazova, Elena; Dunay, Artem; Karelov, Alexey; Khvedelidze, Irina; Voldaeva, Olga; Belskiy, Vladislav; Dzhamullaev, Parvin; Grishkowez, Elena; Kretov, Vladimir; Levin, Valeriy; Molkov, Aleksandr; Puzanov, Sergey; Samoilenko, Aleksandr; Tchekulaev, Aleksandr; Tulupova, Valentina; Utkin, Ivan; Allorto, Nikki Leigh; Bishop, David Gray; Builu, Pierre Monji; Cairns, Carel; Dasrath, Ashish; de Wet, Jacques; Hoedt, Marielle den; Grey, Ben; Hayes, Morgan Philip; Küsel, Belinda Senta; Shangase, Nomcebo; Wise, Robert; Cacala, Sharon; Farina, Zane; Govindasamy, Vishendran; Kruse, Carl-Heinz; Lee, Carolyn; Marais, Leonard; Naidoo, Thinagrin Dhasarthun; Rajah, Chantal; Rodseth, Reitze Nils; Ryan, Lisa; von Rhaden, Richard; Adam, Suwayba; Alphonsus, Christella; Ameer, Yusuf; Anderson, Frank; Basanth, Sujith; Bechan, Sudha; Bhula, Chettan; Biccard, Bruce M.; Biyase, Thuli; Buccimazza, Ines; Cardosa, Jorge; Chen, James; Daya, Bhavika; Drummond, Leanne; Elabib, Ali; Abdel Goad, Ehab Helmy; Goga, Ismail E.; Goga, Riaz; Harrichandparsad, R.; Hodgson, Richard E.; Jordaan, J.; Kalafatis, Nicky; Kampik, Christian; Landers, A. T.; Loots, Emil; Madansein, Rajhmum; Madaree, Anil; Madiba, Thandinkosi E.; Manzini, Vukani T.; Mbuyisa, Mbali; Moodley, Rajan; Msomi, Mduduzi; Mukama, Innocent; Naidoo, Desigan; Naidoo, Rubeshan; Naidu, Tesuven K.; Ntloko, Sindiswa; Padayachee, Eneshia; Padayachee, Lucelle; Phaff, Martijn; Pillay, Bala; Pillay, Desigan; Pillay, Lutchmee; Ramnarain, Anupa; Ramphal, Suren R.; Ryan, Paul; Saloojee, Ahmed; Sebitloane, Motshedisi; Sigcu, Noluyolo; Taylor, Jenna L.; Torborg, Alexandra; Visser, Linda; Anderson, Philip; Conradie, Alae; de Swardt, Mathew; de Villiers, Martin; Eikman, Johan; Liebenberg, Riaan; Mouton, Johan; Paton, Abbey; van der Merwe, Louwrence; Wilscott-Davids, Candice; Barrett, Wendy Joan; Bester, Marlet; de Beer, Johan; Geldenhuys, Jacques; Gouws, Hanni; Potgieter, Jan-Hendrik; Strydom, Magdel; WilberforceTurton, Edwin; Chetty, Rubendraj R.; Chirkut, Subash; Cronje, Larissa; de Vasconcellos, Kim; Dube, Nokukhanya Z.; Gama, N. Sibusiso; Green, Garyth M.; Green-Thompson, Randolph; Kinoo, Suman Mewa; Kistnasami, Prenolin; Maharaj, Kapil; Moodley, Manogaran S.; Mothae, Sibongile J.; Naidoo, Ruvashni; Aslam F Noorbhai, M.; Rughubar, Vivesh; Reddy, Jenendhiran; Singh, Avesh; Skinner, David L.; Smith, Murray J.; Singh, Bhagwan; Misra, Ravi; Naidoo, Maheshwar; Ramdharee, Pireshin; Selibea, Yvonne; Sewpersad, Selina; Sham, Shailendra; Wessels, Joseph D.; Africander, Cucu; Bejia, Tarek; Blakemore, Stephen P.; Botes, Marisa; Bunwarie, Bimalshakth; Hernandez, Carlos B.; Jeeraz, Mohammud A.; Legutko, Dagmara A.; Lopez, Acela G.; de Meyer, Jenine N.; Muzenda, Tanaka; Naidoo, Noel; Patel, Maryam; Pentela, Rao; Junge, Marina; Mansoor, Naj; Rademan, Lana; Scislowski, Pawel; Seedat, Ismail; van den Berg, Bianca; van der Merwe, Doreen; van Wyk, Steyn; Govender, Komalan; Naicker, Darshan; Ramjee, Rajesh; Saley, Mueen; Kuhn, Warren Paul; Matos-Puig, Roel; Alberto Lisi, Zaheer Moolla; Perez, Gisela; Beltran, Anna Valle; Lozano, Angels; Navarro, Carlos Delgado; Duca, Alejandro; Ernesto, Ernesto Pastor Martinez; Ferrando, Carlos; Fuentes, Isabel; García-Pérez, Maria Luisa; Gracia, Estefania; Palomares, Ana Izquierdo; Katime, Antonio; Miñana, Amanda; Incertis, Raul Raul; Romero, Esther; Romero Garcia, Carolina Soledad; Rubio, Concepcion; Artiles, Tania Socorro; Soro, Marina; Valls, Paola; Laguarda, Gisela Alaman; Benavent, Pau; Cuenca, Vicente Chisbert; Cueva, Andreu; Lafuente, Matilde; Parra, Asuncion Marques; Rodrigo, Alejandra Romero; Sanchez-Morcillo, Silvia; Tormo, Sergi; Redondo, Francisco Javier; de Andrés Ibanez, José Antonio; Diago, Lorena Gómez; José Hernández Cádiz, Maria; Manuel, Granell Gil; Peris, Raquel; Saiz, Cristina; Vivo, Jose Tatay; Soto, Maria Teresa Tebar; Brunete, Tamara; Cancho, David; Delgado García, David R.; Zamudio, Diana; del Valle, Santiago Garcia; Serrano, M. Luz; Alonso, Eduardo; Anillo, Victor; Maseda, Emilio; Salgado, Patricia; Suarez, Luis; Suarez-de-la-Rica, Alejandro; Villagrán, María José; Alonso, José Ignacio; Cabezuelo, Estefania; Garcia-Saiz, Irene; Lopez del Moral, Olga; Martín, Silvia; Gonzalez, Alba Perez; Doncel, Ma Sherezade Tovar; Vera, Martin Agüero; José Ávila Sánchez, Francisco; Castaño, Beatriz; Moreira, Beatriz Castaño; Risco, Sahely Flores; Martín, Daniel Paz; Martín, Fernando Pérez; Poza, Paloma; Ruiz, Adela; Serna Martínez, Wilson Fabio; Vicente, Bárbara Vázquez; Dominguez, Saul Velaz; Fernández, Salvador; Munoz-López, Alfonso; Bernat, Maria Jose; Mas, Arantxa; Planas, Kenneth; Jawad, Monir; Saeed, Yousif; Hedin, Annika; Levander, Helena; Holmström, Sandra; Lönn, David; Zoerner, Frank; Åkring, Irene; Widmark, Carl; Zettergren, Jan; Liljequist, Victor Aspelund; Nystrom, Lena; Odeberg-Wernerman, Suzanne; Oldner, Anders; Fagerlund, Malin Jonsson; Reje, Patrik; Lyckner, Sara; Sperber, Jesper; Adolfsson, Anne; Klarin, Bengt; Ögren, Katrin; Barras, Jean-Pierre; Bührer, Thomas; Despotidis, Vasileios; Helmy, Naeder; Holliger, Stephan; Raptis, Dimitri Aristotle; Schmid, Roger; Meyer, Antoine; Jaquet, Yves; Kessler, Ulf; Muradbegovic, Mirza; Nahum, Solange R.; Rotunno, Teresa; Schiltz, Boris; Voruz, François; Worreth, Marc; Christoforidis, Dimitri; Popeskou, Sotirios Georgios; Furrer, Markus; Prevost, Gian Andrea; Stocker, Andrea; Lang, Klaus; Breitenstein, Stefan; Ganter, Michael T.; Geisen, Martin; Soll, Christopher; Korkmaz, Michelle; Lubach, Iris; Schmitz, Michael; Meyer Zu Schwabedissen, Moritz; Moritz, Meyer Zu Schwabedissen; Zingg, Urs; Hillermann, Thomas; Wildi, Stefan; Pinto, Bernardo Bollen; Walder, Bernhard; Mariotti, Giustina; Slankamenac, Ksenija; Namuyuga, Mirioce; Kyomugisha, Edward; Kituuka, Olivia; Shikanda, Anne Wesonga; Kakembo, Nasser; Tom, Charles Otim; Antonina, Webombesa; Bua, Emmanuel; Ssettabi, Eden Michael; Epodoi, Joseph; Kabagenyi, Fiona; Kirya, Fred; Dempsey, Ged; Seasman, Colette; Nawaz Khan, Raja Basit; Kurasz, Claire; Macgregor, Mark; Shawki, Burhan; Francis, Daren; Hariharan, Vimal; Chau, Simon; Ellis, Kate; Butt, Georgina; Chicken, Dennis-Wayne; Christmas, Natasha; Allen, Samantha; Daniel, Gayatri Daniel; Dempster, Angie; Kemp, Juliette; Matthews, Lewis; Mcglone, Philip; Tambellini, Joanne; Trodd, Dawn; Freitas, Katie; Garg, Atul; Gupta, Janesh Kumar; Karpate, Shilpaja; Kulkarni, Aditi; O'Hara, Chloe; Troko, Jtroko; Angus, Kirsty; Bradley, Jacqueline; Brennan, Emma; Brooks, Carolyn; Brown, Janette; Brown, Gemma; Finch, Amanda; Gratrix, Karen; Hesketh, Sue; Hill, Gillian; Jeffs, Carol; Morgan, Maureen; Pemberton, Chris; Slawson, Nicola; Spickett, Helen; Swarbrick, Gemma; Thomas, Megan; van Duyvenvoorde, Greta; Brennan, Andrew; Briscoe, Richard; Cooper, Sarah; Lawton, Tom; Northey, Martin; Senaratne, Rashmi; Stanworth, Helen; Burrows, Lorna; Cain, Helen; Craven, Rachael; Davies, Keith; Jonas, Attila; Pachucki, Marcin; Walkden, Graham; Davies, Helen; Gudaca, Mariethel; Hobrok, Maria; Arawwawala, Dilshan; Fergey, Lauren; Gardiner, Matthew; Gunn, Jacqueline; Johnson, Lyndsay; Lofting, Amanda; Lyle, Amanda; Neela, Fiona Mc; Smolen, Susan; Topliffe, Joanne; Williams, Sarah; Bland, Martin; Balaji, Packianathaswamy; Kaura, Vikas; Lanka, Prasad; Smith, Neil; Ahmed, Ahmed; Myatt, John; Shenoy, Ravikiran; Soon, Wai Cheong; Tan, Jessica; Karadia, Sunny; Self, James; Durant, Emma; Tripathi, Shiva; Bullock, Clare; Campbell, Debbie; Ghosh, Alison; Hughes, Thomas; Zsisku, Lajos; Bengeri, Sheshagiri; Cowton, Amanda; Khalid, Mohammed Shazad; Limb, James; McAdam, Colin; Porritt, Mandy; Rafi, M. Amir; Shekar, Priya; Adams, David; Harden, Catherine; Hollands, Heidi; King, Angela; March, Linda; Minto, Gary; Patrick, Abigail; Squire, Rosalyn; Waugh, Darren; Kumara, Paramesh; Simeson, Karen; Yarwood, Jamie; Browning, Julie; Hatton, Jonathan; Julian, Howes; Mitra, Atideb; Newton, Maria; Pernu, Pawan Kootelu; Wilson, Alison; Commey, Thelma; Foot, Helen; Glover, Lyn; Gupta, Ajay; Lancaster, Nicola; Levin, Jill; Mackenzie, Felicity; Mestanza, Claire; Nofal, Emma; Pout, Lauren; Varden, Rosanna; Wild, Jonathan; Jones, Stephanie; Moreton, Sarah; Pulletz, Mark; Davies, Charlotte; Martin, Matthew; Thomas, Sian; Burns, Karen; McArthur, Carol; Patel, Panna; Lau, Gary; Rich, Natalie; Davis, Fiona; Lyons, Rachel; Port, Beth; Prout, Rachel; Smith, Christopher; Adelaja, Yemi; Bennett, Victoria; Bidd, Heena; Dumitrescu, Alexandra; Murphy, Jacqui Fox; Keen, Abigail; Mguni, Nhlanhla; Ong, Cheng; Adams, George; Boshier, Piers; Brown, Richard; Butryn, Izabella; Chatterjee, Jayanta; Freethy, Alexander; Lockwood, Geoffrey; Tsakok, Maria; Tsiligiannis, Sophia; Peat, William; Stephenson, Lorraine; Bradburn, Mike; Pick, Sara; Cunha, Pedro; Olagbaiye, Olufemi; Tayeh, Salim; Packianathaswamy, Balaji; Abernethy, Caroline; Balasubramaniam, Madhu; Bennett, Rachael; Bolton, David; Martinson, Victoria; Naylor, Charde; Bell, Stephanie; Heather, Blaylock; Kushakovsky, Vlad; Alcock, Liam; Alexander, Hazel; Anderson, Colette; Baker, Paul; Brookes, Morag; Cawthorn, Louise; Cirstea, Emanuel; Clarkson, Rachel; Colling, Kerry; Coulter, Ian; Das, Suparna; Haigh, Kathryn; Hamdan, Alhafidz; Hugill, Keith; Kottam, Lucksy; Lisseter, Emily; Mawdsley, Matthew; McGivern, Julie; Padala, Krishnaveni; Phelps, Victoria; Ramesh Kumar, Vineshykaa; Stewart, Kirsten; Towse, Kayley; Tregonning, Julie; Vahedi, Ali; Walker, Alycon; Baines, Duncan; Bilolikar, Anjali; Chande, Shiv; Copley, Edward; Dunk, Nigel; Kulkarni, Raghavendra; Kumar, Pawan; Metodiev, Yavor; Ncomanzi, Dumisani; Raithatha, Bhavesh; Raymode, Parizade; Szafranski, Jan; Twohey, Linda; Watt, Philip; Weatherall, Lucie; Weatherill, J.; Whitman, Zoe; Wighton, Elinor; Abayasinghe, Chamika; Chan, Alexander; Darwish, Sharif; Gill, James; Glasgow, Emma; Hadfield, Daniel; Harris, Clair; Hopkins, Phil; Kochhar, Arun; Kunst, Gudrun; Mellis, Clare; Pool, Andrew; Riozzi, Paul; Selman, Andrew; Smith, Emma-Jane; Vele, Liana; Gercek, Yuksel; Guy, Kramer; Holden, Douglas; Watson, Nicholas; Whysall, Karen; Andreou, Prematie; Hales, Dawn; Thompson, Jonathan; Bowrey, Sarah; McDonald, Shara; Gilmore, Jemma; Hills, Vicky; Kelly, Chan; Kelly, Sinead; Lloyd, Geraint; Abbott, Tom; Gall, Lewis; Torrance, Hew; Vivian, Mark; Berntsen, Emer; Nolan, Tracey; Turner, Angus; Vohra, Akbar; Brown, Andrew; Clark, Richard; Coughlan, Elaine; Daniel, Conway; Patvardhan, Chinmay; Pearson, Rachel; Predeep, Sheba; Saad, Hesham; Shanmugam, Mohanakrishnan; Varley, Simon; Wylie, Katharine; Cooper, Lucy; Makowski, Arystarch; Misztal, Beata; Moldovan, Eliza; Pegg, Claire; Donovan, Andrew; Foot, Jayne; Large, Simon; Claxton, Andrew; Netke, Bhagyashree; Armstrong, Richard; Calderwood, Claire; Kwok, Andy; Mohr, Otto; Oyeniyi, Peter; Patnaik, Lisa; Post, Benjamin; Ali, Sarah; Arshad, Homa; Baker, Gerard; Brenner, Laura; Brincat, Maximilian; Brunswicker, Annemarie; Cox, Hannah; Cozar, Octavian Ionut; Cheong, Edward; Durst, Alexander; Fengas, Lior; Flatt, Jim; Glister, Georgina; Narwani, Vishal; Photi, Evangelos; Rankin, Adeline; Rosbergen, Melissa; Tan, Mark; Beaton, Ceri; Horn, Rachel; Hunt, Jane; Rousseau, Guy; Stancombe, Lucia; Absar, Mohammed; Allsop, Joanne; Drinkwater, Zoe; Hodgkiss, Tracey; Smith, Kirsty; Brown, Jamie; Alexander-Sefre, Farhad; Campey, Lorraine; Dudgeon, Lucy; Hall, Kathryn; Hitchcock, Rachael; James, Lynne; Smith, Kate; Winstone, Ulrika; Ahmad, Norfaizan; Bauchmuller, Kris; Harrison, Jonathan; Jeffery, Holly; Miller, Duncan; Pinder, Angela; Pothuneedi, Sailaja; Rosser, Jonathan; Sanghera, Sumayer; Swift, Diane; Walker, Rachel; Bester, Delia; Cavanagh, Sarah; Cripps, Heather; Daniel, Harvey; Lynch, Julie; Paton, Alison; Pyke, Shirley; Scholefield, John; Whitworth, Helen; Bottrill, Fiona; Ramalingam, Ganesh; Webb, Stephen; Akerman, Nik; Antill, Philip; Bourner, Lynsey; Buckley, Sarah; Castle, Gail; Charles, Rob; Eggleston, Christopher; Foster, Rebecca; Gill, Satwant; Lindley, Kate; Lklouk, Mohamed; Lowery, Tracey; Martin, Oliver; Milne, David; O'Connor, Patrick; Ratcliffe, Andrew; Rose, Alastair; Smith, Annie; Varma, Sandeep; Ward, Jackie; Barcraft-Barnes, Helena; Camsooksai, Julie; Colvin, Carolyn; Reschreiter, Henrik; Tbaily, Lee; Venner, Nicola; Hamilton, Caroline; Kelly, Lewis; Toth-Tarsoly, Piroska; Dodsworth, Kerry; Foord, Denise; Gordon, Paul; Hawes, Elizabeth; Lamb, Nikki; Mouland, Johanna; Nightingale, Jeremy; Rose, Steve; Schrieber, Joe; Al'Amri, Khalid; Aladin, Hafiz; Arshad, Mohammed Asif; Barraclough, James; Bentley, Conor; Bergin, Colin; Carrera, Ronald; Clarkson, Aisling; Collins, Michelle; Cooper, Lauren; Denham, Samuel; Griffiths, Ewen; Ip, Peter; Jeyanthan, Somasundaram; Joory, Kavita; Kaur, Satwant; Marriott, Paul; Mitchell, Natalie; Nagaiah, Sukumar; Nilsson, Annette; Parekh, Nilesh; Pope, Martin; Seager, Joseph; Serag, Hosam; Tameem, Alifia; Thomas, Anna; Thunder, Joanne; Torrance, Andrew; Vohra, Ravinder; Whitehouse, Arlo; Wong, Tony; Blunt, Mark; Wong, Kate; Giles, Julian; Reed, Isabelle; Weller, Debbie; Bell, Gillian; Birch, Julie; Damant, Rose; Maiden, Jane; Mewies, Clare; Prince, Claire; Radford, Jane; Reynolds, Tim; Balain, Birender; Banerjee, Robin; Barnett, Andrew; Burston, Ben; Davies, Kirsty; Edwards, Jayne; Evans, Chris; Ford, David; Gallacher, Pete; Hill, Simon; Jaffray, David; Karlakki, Sudheer; Kelly, Cormac; Kennedy, Julia; Kiely, Nigel; Lewthwaite, Simon; Marquis, Chris; Ockendon, Matthew; Phillips, Stephen; Pickard, Simon; Richardson, James; Roach, Richard; Smith, Tony; Spencer-Jones, Richard; Steele, Niall; Steen, Julie; van Liefland, Marck; White, Steve; Faulds, Matthew; Harris, Meredyth; Kelly, Carrie; Nicol, Scott; Pearson, Sally Anne; Chukkambotla, Srikanth; Andrew, Alyson; Attrill, Elizabeth; Campbell, Graham; Datson, Amanda; Fouracres, Anna; Graterol, Juan; Graves, Lynne; Hong, Bosun; Ishimaru, Alexander; Karthikeyan, Arvind; King, Helen; Lawson, Tom; Lee, Gregory; Lyons, Saoirse; Hall, Andrew Macalister; Mathoulin, Sophie; Mcintyre, Eilidh; Mclaughlin, Danny; Mulcahy, Kathleen; Paddle, Jonathan; Ratcliffe, Anna; Robbins, James; Sung, Weilin; Tayo, Adeoluwa; Trembath, Lisa; Venugopal, Suneetha; Walker, Robert; Wigmore, Geoffrey; Boereboom, Catherine; Downes, Charlotte; Humphries, Ryan; Melbourne, Susan; Smith, Coral; Tou, Samson; Ullah, Shafa; Batchelor, Nick; Boxall, Leigh; Broomby, Rupert; Deen, Tariq; Hellewell, Alistair; Helliwell, Laurence; Hutchings, Melanie; Hutchins, David; Keenan, Samantha; Mackie, Donna; Potter, Alison; Smith, Frances; Stone, Lucy; Thorpe, Kevin; Wassall, Richard; Woodgate, Andrew; Baillie, Shelley; Campbell, Tara; James, Sarah; King, Chris; Marques de Araujo, Daniela; Martin, Daniel; Morkane, Clare; Neely, Julia; Rajendram, Rajkumar; Burton, Megan; James, Kathryn; Keevil, Edward; Minik, Orsolya; Morgan, Jenna; Musgrave, Anna; Rajanna, Harish; Roberts, Tracey; Adamson, Michael; Jumbe, Sandra; Kendall, Jennie; Muthuswamy, Mohan Babu; Anderson, Charlotte; Cruikshanks, Andrew; Wrench, Ian; Zeidan, Lisa; Ardern, Diane; Harris, Benjamin; Hellstrom, Johanna; Martin, Jane; Thomas, Richard; Varsani, Nimu; Brown, Caroline Wrey; Docherty, Philip; Gillies, Michael; McGregor, Euan; Usher, Helen; Craig, Jayne; Smith, Andrew; Ahmad, Tahania; Bodger, Phoebe; Creary, Thais; Fowler, Alexander; Hewson, Russ; Ijuo, Eke; Jones, Timothy; Kantsedikas, Ilya; Lahiri, Sumitra; McLean, Aaron Lawson; Niebrzegowska, Edyta; Phull, Mandeep; Wang, Difei; Wickboldt, Nadine; Baldwin, Jacqueline; Doyle, Donna; Mcmullan, Sean; Oladapo, Michelle; Owen, Thomas; Williams, Alexandra; Daniel, Hull; Gregory, Peter; Husain, Tauqeer; Kirk-Bayley, Justin; Mathers, Edward; Montague, Laura; Harper, Mark; White, Stuart; Jack, James; Ridley, Carrie; Avis, Joanne; Cook, Tim; Dali-Kemmery, Lola; Kerslake, Ian; Lambourne, Victoria; Pearson, Annabel; Boyd, Christine; Callaghan, Mark; Lawson, Cathy; McCrossan, Roopa; Nesbitt, Vanessa; O'connor, Laura; Scott, Julia; Sinclair, Rhona; Farid, Nahla; Morgese, Ciro; Bhatia, Kailash; Karmarkar, Swati; Ahmed, Jamil; Branagan, Graham; Hutton, Monica; Swain, Andrew; Brookes, Jamie; Cornell, Jonathan; Dolan, Rachael; Hulme, Jonathan; Jansen van Vuuren, Amanda; Jowitt, Tom; Kalashetty, Gunasheela; Lloyd, Fran; Patel, Kiran; Sherwood, Nicholas; Brown, Lynne; Chandler, Ben; Deighton, Kerry; Emma, Temlett; Haunch, Kirsty; Cheeseman, Michelle; Dent, Kathy; Garg, Sanjeev; Gray, Carol; Hood, Marion; Jones, Dawn; Juj, Joanne; Rao, Roshan; Walker, Tara; Al Anizi, Mashel; Cheah, Clarissa; Cheing, Yushio; Coutinho, Francisco; Gondo, Prisca; Hadebe, Bernard; Hove, Mazvangu Onie; Khader, Ahamed; Krishnachetty, Bobby; Rhodes, Karen; Sokhi, Jagdish; Baker, Katie-Anne; Bertram, Wendy; Looseley, Alex; Mouton, Ronelle; Hanna, George; Arnold, Glenn; Arya, Shobhit; Balfoussia, Danai; Baxter, Linden; Harris, James; Jones, Craig; Knaggs, Alison; Markar, Sheraz; Perera, Anisha; Scott, Alasdair; Shida, Asako; Sirha, Ravneet; Wright, Sally; Frost, Victoria; Gray, Catherine; Andrews, Emma; Arrandale, Lindsay; Barrett, Stephen; Cifra, Elna; Cooper, Mariese; Dragnea, Dragos; Elna, Cifra; Maclean, Jennifer; Meier, Sonja; Milliken, Donald; Munns, Christopher; Ratanshi, Nadir; Ramessur, Suneil; Salvana, Abegail; Watson, Anthony; Ali, Hani; Campbell, Gill; Critchley, Rebecca; Endersby, Simon; Hicks, Catherine; Liddle, Alison; Pass, Marc; Ritchie, Charlotte; Thomas, Charlotte; Too, Lingxi; Welsh, Sarah; Gill, Talvinder; Johnson, Joanne; Reed, Joanne; Davis, Edward; Papadopoullos, Sam; Attwood, Clare; Biffen, Andrew; Boulton, Kerenza; Gray, Sophie; Hay, David; Mills, Sarah; Montgomery, Jane; Riddell, Rory; Simpson, James; Bhardwaj, Neeraj; Paul, Elaine; Uwubamwen, Nosakhare; Alexander, Maini; Arrich, James; Arumugam, Swarna; Blackwood, Douglas; Boggiano, Victoria; Brown, Robyn; Chan, Yik Lam; Chatterjee, Devnandan; Chhabra, Ashok; Christian, Rachel; Costelloe, Hannah; Matthewman, Madeline Coxwell; Dalton, Emma; Darko, Julia; Davari, Maria; Dave, Tejal; Deacon, Matthew; Deepak, Shantal; Edmond, Holly; Ellis, Jessica; El-Sayed, Ahmed; Eneje, Philip; English, Rose; Ewe, Renee; Foers, William; Franklin, John; Gallego, Laura; Garrett, Emily; Goldberg, Olivia; Goss, Harry; Greaves, Rosanna; Harris, Rudy; Hennings, Charles; Jones, Eleanor; Kamali, Nelson; Kokkinos, Naomi; Lewis, Carys; Lignos, Leda; Malgapo, Evaleen Victoria; Malik, Rizwana; Milne, Andrew; Mulligan, John-Patrick; Nicklin, Philippa; Palipane, Natasha; Parsons, Thomas; Piper, Rebecca; Prakash, Rohan; Ramesh, Byron; Rasip, Sarah; Reading, Jacob; Rela, Mariam; Reyes, Anna; Stephens, Robert; Rooms, Martin; Shah, Karishma; Simons, Henry; Solanki, Shalil; Spowart, Emma; Stevens, Amy; Thomas, Christopher; Waggett, Helena; Yassaee, Arrash; Kennedy, Anthony; Scott, Sara; Somanath, Sameer; Berg, Andrew; Hernandez, Miguel; Nanda, Rajesh; Tank, Ghanshyambhai; Wilson, Natalie; Wilson, Debbie; Al-Soudaine, Yassr; Baldwin, Matthew; Cornish, Julie; Davies, Zoe; Davies, Leigh; Edwards, Marc; Frewer, Natasha; Gallard, Sian; Glasbey, James; Harries, Rhiannon; Hopkins, Luke; Kim, Taeyang; Koompirochana, Vilavan; Lawson, Simon; Lewis, Megan; Makzal, Zaid; Scourfield, Sarah; Ahmad, Yousra; Bates, Sarah; Blackwell, Clare; Bryant, Helen; Collins, Hannah; Coulter, Suzanne; Cruickshank, Ross; Daniel, Sonya; Daubeny, Thomas; Edwards, Mark; Golder, Kim; Hawkins, Lesley; Helen, Bryant; Hinxman, Honor; Levett, Denny; Salmon, Karen; Seaward, Leanne; Skinner, Ben; Tyrell, Bryony; Wadams, Beverley; Walsgrove, Joseph; Dickson, Jane; Constantin, Kathryn; Karen, Markwell; O'Brien, Peter; O'Donohoe, Lynn; Payne, Hannah; Sundayi, Saul; Walker, Elaine; Brooke, Jenny; Cardy, Jon; Humphreys, Sally; Kessack, Laura; Kubitzek, Christiane; Kumar, Suhas; Cotterill, Donna; Hodzovic, Emil; Hosdurga, Gurunath; Miles, Edward; Saunders, Glenn; Campbell, Marta; Chan, Peter; Jemmett, Kim; Raj, Ashok; Naik, Aditi; Oshowo, Ayo; Ramamoorthy, Rajarajan; Shah, Nimesh; Sylvan, Axel; Blyth, Katharine; Burtenshaw, Andrew; Freeman, David; Johnson, Emily; Lo, Philip; Martin, Terry; Plunkett, Emma; Wollaston, Julie; Allison, Joanna; Carroll, Christine; Craw, Nicholas; Craw, Sarah; Pitt-Kerby, Tressy; Rowland-Axe, Rebecca; Spurdle, Katie; McDonald, Andrew; Simon, Davies; Sinha, Vivek; Smith, Thomas; Banner-Goodspeed, Valerie; Boone, Myles; Campbell, Kathleen; Lu, Fengxin; Scannell, Joseph; Sobol, Julia; Balajonda, Naraida; Clemmons, Karen; Conde, Carlos; Elgasim, Magdi; Funk, Bonita; Hall, Roger; Hopkins, Thomas; Olaleye, Omowunmi; Omer, Omer; Pender, Michelle; Porto, Angelo; Stevens, Alice; Waweru, Peter; Yeh, Erlinda; Bodansky, Daniella; Evans, Adam; Kleopoulos, Steven; Maril, Robert; Mathney, Edward; Sanchez, Angela; Tinuoye, Elizabeth; Bateman, Brian; Eng, Kristen; Jiang, Ning; Ladha, Karim; Needleman, Joseph; Chen, Lee-Lynn; Lane, Rondall; Robinowitz, David; Ghushe, Neil; Irshad, Mariam; O'Connor, John; Patel, Samir; Takemoto, Steven; Wallace, Art; Mazzeffi, Michael; Rock, Peter; Wallace, Karin; Zhu, Xiaomao; Chua, Pandora; Mattera, Matthew; Sharar, Rebecca; Thilen, Stephan; Treggiari, Miriam; Morgan, Angela; Sofjan, Iwan; Subramaniam, Kathirvel; Avidan, Michael; Maybrier, Hannah; Muench, Maxwell; Wildes, Troy

    2018-01-01

    The surgical safety checklist is widely used to improve the quality of perioperative care. However, clinicians continue to debate the clinical effectiveness of this tool. Prospective analysis of data from the International Surgical Outcomes Study (ISOS), an international observational study of

  20. Remission of Type 2 Diabetes Mellitus in Patients After Different Types of Bariatric Surgery : A Population-Based Cohort Study in the United Kingdom

    NARCIS (Netherlands)

    Yska, Jan Peter; van Roon, Eric N; de Boer, Anthonius; Leufkens, Hubert G M; Wilffert, Bob; de Heide, Loek J M; de Vries, Frank; Lalmohamed, Arief

    2015-01-01

    Importance: To our knowledge, an observational study on the remission of type 2 diabetes mellitus (T2DM) after different types of bariatric surgery based on data from general practice has not been carried out. Objective: To assess the effect of different types of bariatric surgery in patients with

  1. Remission of type 2 diabetes mellitus in patients after different types of bariatric surgery : A population-based cohort study in the United Kingdom

    NARCIS (Netherlands)

    Yska, Jan Peter; Van Roon, Eric N.; De Boer, Anthonius; Leufkens, Hubert G M; Wilffert, Bob; De Heide, Loek J M; De Vries, Frank; Lalmohamed, Arief

    2015-01-01

    IMPORTANCE: To our knowledge, an observational study on the remission of type 2 diabetes mellitus (T2DM) after different types of bariatric surgery based on data from general practice has not been carried out. OBJECTIVE: To assess the effect of different types of bariatric surgery in patients with

  2. The outcome and survival of palliative surgery in thoraco-lumbar spinal metastases: contemporary retrospective cohort study

    NARCIS (Netherlands)

    Nemelc, R.M.; Stadhouder, A.; van Royen, B.J.; Jiya, T.U.

    2014-01-01

    Purpose To evaluate outcome and survival and to identify prognostic variables for patients surgically treated for spinal metastases. Methods A retrospective study was performed on 86 patients, surgically treated for spinal metastases. Preoperative analyses of the ASIA and spinal instability

  3. The Influence of Preoperative and Postoperative Psychological Symptoms on Clinical Outcome after Shoulder Surgery : A Prospective Longitudinal Cohort Study

    NARCIS (Netherlands)

    Koorevaar, Rinco C T; van 't Riet, Esther; Gerritsen, Marleen J J; Madden, Kim; Bulstra, Sjoerd K.

    2016-01-01

    BACKGROUND: Psychological symptoms are highly prevalent in patients with shoulder complaints. Psychological symptoms in patients with shoulder complaints might play a role in the aetiology, perceived disability and pain and clinical outcome of treatment. The aim of this study was to assess whether

  4. The Influence of Preoperative and Postoperative Psychological Symptoms on Clinical Outcome after Shoulder Surgery: A Prospective Longitudinal Cohort Study

    NARCIS (Netherlands)

    Koorevaar, R.C.; Riet, E. van 't; Gerritsen, M.J.P.; Madden, K.; Bulstra, S.K.

    2016-01-01

    BACKGROUND: Psychological symptoms are highly prevalent in patients with shoulder complaints. Psychological symptoms in patients with shoulder complaints might play a role in the aetiology, perceived disability and pain and clinical outcome of treatment. The aim of this study was to assess whether

  5. The outcome and survival of palliative surgery in thoraco-lumbar spinal metastases: contemporary retrospective cohort study.

    Science.gov (United States)

    Nemelc, R M; Stadhouder, A; van Royen, B J; Jiya, T U

    2014-11-01

    Purpose: To evaluate outcome and survival and to identify prognostic variables for patients surgically treated for spinal metastases. Methods: A retrospective study was performed on 86 patients, surgically treated for spinal metastases. Preoperative analyses of the ASIA and spinal instability neoplastic scores (SINS) were performed. Survival curves of different prognostic variables were made by Kaplan–Meier analysis and the variables entered in a Cox proportional hazards model to determine their significance on survival. The correlation between preoperative radiotherapy and postoperative wound infections was also evaluated. Results: Survival analysis was performed on 81 patients,37 women and 44 men. Five patients were excluded due to missing data. Median overall survival was 38 weeks [95 % confidence interval (CI) 27.5–48.5 weeks], with a 3-month survival rate of 81.5 %. Breast tumor had the best median survival of 127 weeks and lung tumor the worst survival of 18 weeks. Univariate analysis showed tumor type, preoperative ASIA score (p = 0.01) and visceral metastases(p = 0.18) were significant prognostic variables for survival.Colon tumors had 5.53 times hazard ratio compared to patients with breast tumor. ASIA-C score had more than 13.03 times the hazard ratio compared to patients with an ASIA-E score. Retrospective analysis of the SINS scores showed 34 patients with a score of 13–18 points, 44 patients with a score of 7–12 points, and 1 patient with a score of 6 points. Preoperative radiotherapy had no influence on the postoperative incidence of deep surgical wound infections (p = 0.37). Patients with spinal metastases had a median survival of 38 weeks postoperative. The primary tumor type and ASIA score were significant prognostic factors for survival. Preoperative radiotherapy neither had influence on survival nor did it constitute a risk for postoperative surgical wound infections.

  6. First and second eye cataract surgery and driver self-regulation among older drivers with bilateral cataract: a prospective cohort study.

    Science.gov (United States)

    Agramunt, Seraina; Meuleners, Lynn B; Fraser, Michelle L; Chow, Kyle C; Ng, Jonathon Q; Raja, Vignesh

    2018-02-17

    Driving a car is the most common form of transport among the older population. Common medical conditions such as cataract, increase with age and impact on the ability to drive. To compensate for visual decline, some cataract patients may self-regulate their driving while waiting for cataract surgery. However, little is known about the self-regulation practices of older drivers throughout the cataract surgery process. The aim of this study is to assess the impact of first and second eye cataract surgery on driver self-regulation practices, and to determine which objective measures of vision are associated with driver self-regulation. Fifty-five older drivers with bilateral cataract aged 55+ years were assessed using the self-reported Driving Habits Questionnaire, the Mini-Mental State Examination and three objective visual measures in the month before cataract surgery, at least one to three months after first eye cataract surgery and at least one month after second eye cataract surgery. Participants' natural driving behaviour in four driving situations was also examined for one week using an in-vehicle monitoring device. Two separate Generalised Estimating Equation logistic models were undertaken to assess the impact of first and second eye cataract surgery on driver-self-regulation status and which changes in visual measures were associated with driver self-regulation status. The odds of being a self-regulator in at least one driving situation significantly decreased by 70% after first eye cataract surgery (OR: 0.3, 95% CI: 0.1-0.7) and by 90% after second eye surgery (OR: 0.1, 95% CI: 0.1-0.4), compared to before first eye surgery. Improvement in contrast sensitivity after cataract surgery was significantly associated with decreased odds of self-regulation (OR: 0.02, 95% CI: 0.01-0.4). The findings provide a strong rationale for providing timely first and second eye cataract surgery for older drivers with bilateral cataract, in order to improve their mobility and

  7. Complexities of revision mastoid surgery in a migratory population cohort.

    LENUS (Irish Health Repository)

    Lennon, P

    2012-03-01

    We present a review of patients from Eastern Europe who have recently immigrated to Ireland with complicated otological disease. We carried out a retrospective chart review of these patients. These are a complicated cohort of 7 patients, 5 (71.4%) of whom had previous ear surgery, none had old notes and there was often a need for interpreters (3 or 42.8%) and challenging surgery. Follow up was also problematic with many of the patients. In summary this is a case series to highlight a relatively new group of patients to emphasize the need for pre-operative CT scans, facial nerve monitoring and the difficult nature of revision surgery with no old notes.

  8. Cocleostomia transcanal: resultados em longo prazo de um estudo de coorte Transcanal cochleostomy in cochlear implant surgery: long-term results of a cohort study

    Directory of Open Access Journals (Sweden)

    Michelle Lavinsky-Wolff

    2012-04-01

    Full Text Available A técnica de acesso combinado (TAC ao implante coclear (IC é uma variação da técnica clássica de mastoidectomia e timpanotomia posterior (MPTA. A TAC combina um acesso transcanal à cocleostomia com uma timpanotomia posterior reduzida para a inserção dos eletrodos. OBJETIVO: Avaliar e comparar a segurança e efetividade em longo prazo alcançados com a TAC e MPTA em pacientes submetidos a IC em um centro brasileiro. Desenho científico: Estudo de série. MATERIAL E MÉTODO: Pacientes submetidos a IC usando TAC e MPTA foram acompanhados em um estudo de coorte. Os desfechos avaliados foram complicações, avaliação audiométrica e radiológica pós-operatórias. RESULTADOS: Quarenta e quatro pacientes foram implantados usando a TAC e 31 usando MPTA. Não houve casos de paralisia facial, mastoidite, colesteatoma ou fístula após 3,4±1,0 anos. A avaliação radiológica da posição dos eletrodos a mediana de eletrodos fora da cóclea foi de 0 no grupo TAC e de 3 no MPTA (p The combined approach technique (CAT is a variation of the classical the mastoidectomy-posterior tympanotomy technique (MPTA that combines a transcanal approach to cochleostomy with a reduced posterior tympanotomy for insertion of electrodes. AIM: To compare and evaluate long-term safety and effectiveness outcomes obtained with the CAT and with MPTA approach in patients submitted to cochlear implant (CI surgery. Design: series study. METHODS: Patients who underwent CI using CAT or MPTA at a Brazilian center were followed in a cohort study. Main outcomes were complications,audiometric performance and radiological evaluation of electrode position. RESULTS: Fourty-four patients were implanted using CAT and 31 MPTA. There were no cases of facial nerve paralysis, mastoiditis, cholesteatoma or cerebrospinal fluid leaks after 3.4±1.0 years. Radiological evaluation of electrode position revealed that the median number of electrodes outside the cochlea was 0 in CAT and 3 in

  9. Quality of life following total mastectomy with and without reconstruction versus breast-conserving surgery for breast cancer: A case-controlled cohort study.

    Science.gov (United States)

    Howes, Benjamin H L; Watson, David I; Xu, Chris; Fosh, Beverley; Canepa, Maximiliano; Dean, Nicola R

    2016-09-01

    Patient-reported outcomes and quality of life following mastectomy are not well understood. This study evaluates the quality of life following surgery for breast cancer and compares outcomes following breast-conserving surgery versus total mastectomy with or without reconstruction. A case-controlled cross-sectional study was conducted using the validated BREAST-Q™ questionnaire and a study-specific questionnaire to determine patient's views about surgical outcomes. Questionnaires were completed by patients following breast-conserving surgery and total mastectomy with or without reconstruction and by controls without breast cancer. A one-way ANOVA was used to compare mean BREAST-Q™ scores between groups and post hoc analysis using Tukey's and Kruskal-Wallis tests. BREAST-Q™ questionnaires were completed by 400 women (123 controls, 97 breast conservations, 93 mastectomies without reconstruction, 87 mastectomies with reconstruction). Women who had undergone mastectomy and reconstruction had higher scores in satisfaction with breast and sexual well-being domains compared with women who had breast-conserving surgery, and women who had total mastectomy without reconstruction had the lowest scores in these two domains. There was no difference in psychosocial well-being between the groups. Women who had undergone breast-conserving surgery scored the lowest in the physical well-being chest domain and the majority reported breast asymmetry. Our study suggests that women who undergo total mastectomy and breast reconstruction for cancer achieve a quality-of-life outcome that is at least as good as that following breast-conserving surgery. Furthermore, breast conservation has been found to be associated with lower physical well-being (i.e., more pain and discomfort) in the chest area and poorer sexual well-being outcomes. Copyright © 2016 British Association of Plastic, Reconstructive and Aesthetic Surgeons. All rights reserved.

  10. Association between muscle atrophy/weakness and health care costs and utilization among patients receiving total knee replacement surgery: a retrospective cohort study

    Directory of Open Access Journals (Sweden)

    Chen SY

    2013-08-01

    Full Text Available Shih-Yin Chen,1 Ning Wu,1 Yuan-Chi Lee,1 Yang Zhao21Health Economics and Epidemiology, Evidera, Lexington, Massachusetts, 2Health Economics and Outcomes Research, Novartis Pharmaceuticals Corporation, East Hanover, New Jersey, USAPurpose: The aim of the study reported here was to examine health care resource utilization, costs, and risk of rehospitalization for total knee replacement (TKR patients with and without muscle atrophy/weakness (MAW.Patients and methods: Individuals aged 50–64 years with commercial insurance or 65+ years with Medicare Supplemental Insurance (Medicare who had a hospitalization for TKR between January 1, 2006 and September 30, 2009 were identified from a large US claims database. First hospitalization for TKR was defined as the index stay. All patients were classified into three cohorts according to when MAW was diagnosed relative to TKR: pre-MAW, post-MAW, and no MAW. The association between MAW and health care costs over the 12-month post-index period and the probability of rehospitalization were assessed via multivariate regressions.Results: The study sample included 53,696 Medicare and 46,058 commercial insurance TKR patients. Controlling for cross-cohort differences, both the pre- and post-MAW cohorts had significantly higher total health care costs (Medicare US$4,201 and US$9,404 higher, commercial insurance US$2,737 and US$6,640 higher, respectively than the no MAW cohort (all P < 0.05. The post-MAW cohort in both populations was also more likely to have any all-cause or replacement-related rehospitalization compared with the no MAW cohort.Conclusion: Among US patients undergoing TKR, those with MAW had higher health care utilization and costs than patients without MAW.Keywords: rehospitalization, resource utilization, Medicare, health insurance, USA

  11. Long-term follow-up after bariatric surgery in a national cohort.

    Science.gov (United States)

    Thereaux, J; Lesuffleur, T; Païta, M; Czernichow, S; Basdevant, A; Msika, S; Millat, B; Fagot-Campagna, A

    2017-09-01

    Lifelong medical follow-up is mandatory after bariatric surgery. The aim of this study was to assess the 5-year follow-up after bariatric surgery in a nationwide cohort of patients. All adult obese patients who had undergone primary bariatric surgery in 2009 in France were included. Data were extracted from the French national health insurance database. Medical follow-up (medical visits, micronutrient supplementation and blood tests) during the first 5 years after bariatric surgery was assessed, and compared with national and international guidelines. Some 16 620 patients were included in the study. The percentage of patients with at least one reimbursement for micronutrient supplements decreased between the first and fifth years for iron (from 27.7 to 24.5 per cent; P bariatric surgery is poor, especially for young men with poor early follow-up. © 2017 BJS Society Ltd Published by John Wiley & Sons Ltd.

  12. Arthroscopic Surgical Procedures Versus Sham Surgery for Patients With Femoroacetabular Impingement and/or Labral Tears: Study Protocol for a Randomized Controlled Trial (HIPARTI) and a Prospective Cohort Study (HARP).

    Science.gov (United States)

    Risberg, May Arna; Ageberg, Eva; Nilstad, Agnethe; Lund, Bent; Nordsletten, Lars; Løken, Sverre; Ludvigsen, Tom; Kierkegaard, Signe; Carsen, Sasha; Kostogiannis, Ioannis; Crossley, Kay M; Glyn-Jones, Sion; Kemp, Joanne L

    2018-04-01

    Study Design Study protocol for a randomized controlled trial and a prospective cohort. Background The number of arthroscopic surgical procedures for patients with femoroacetabular impingement syndrome (FAIS) has significantly increased worldwide, but high-quality evidence of the effect of such interventions is lacking. Objectives The primary objective will be to determine the efficacy of hip arthroscopic procedures compared to sham surgery on patient-reported outcomes for patients with FAIS (HIP ARThroscopy International [HIPARTI] Study). The secondary objective will be to evaluate prognostic factors for long-term outcome after arthroscopic surgical interventions in patients with FAIS (Hip ARthroscopy Prospective [HARP] Study). Methods The HIPARTI Study will include 140 patients and the HARP Study will include 100 patients. The international Hip Outcome Tool-33 will be the primary outcome measure at 1 year. Secondary outcome measures will be the Hip disability and Osteoarthritis Outcome Score, Arthritis Self-Efficacy Scale, fear of movement (Tampa Scale of Kinesiophobia), Patient-Specific Functional Scale, global rating of change score, and expectations. Other outcomes will include active hip range of motion, hip muscle strength tests, functional performance tests, as well as radiological assessments using radiographs and magnetic resonance imaging. Conclusion To determine the true effect of surgery, beyond that of placebo, double-blinded placebo-controlled trials including sham surgery are needed. The HIPARTI Study will direct future evidence-based treatment of FAIS. Predictors for long-term development and progression of degenerative changes in the hip are also needed for this young patient group with FAIS; hence, responders and nonresponders to treatment could be determined. J Orthop Sports Phys Ther 2018;48(4):325-335. doi:10.2519/jospt.2018.7931.

  13. Cost of treating ventilator-associated pneumonia post cardiac surgery in the National Health Service: Results from a propensity-matched cohort study.

    Science.gov (United States)

    Luckraz, Heyman; Manga, Na'ngono; Senanayake, Eshan L; Abdelaziz, Mahmoud; Gopal, Shameer; Charman, Susan C; Giri, Ramesh; Oppong, Raymond; Andronis, Lazaros

    2018-05-01

    Ventilator-associated pneumonia is associated with significant morbidity, mortality and healthcare costs. Most of the cost data that are available relate to general intensive care patients in privately remunerated institutions. This study assessed the cost of managing ventilator-associated pneumonia in a cardiac intensive care unit in the National Health Service in the United Kingdom. Propensity-matched study of prospectively collected data from the cardiac surgical database between April 2011 and December 2014 in all patients undergoing cardiac surgery (n = 3416). Patients who were diagnosed as developing ventilator-associated pneumonia, as per the surveillance definition for ventilator-associated pneumonia (n = 338), were propensity score matched with those who did not (n = 338). Costs of treating post-op cardiac surgery patients in intensive care and cost difference if ventilator-associated pneumonia occurred based on Healthcare Resource Group categories were assessed. Secondary outcomes included differences in morbidity, mortality and cardiac intensive care unit and in-hospital length of stay. There were no significant differences in the pre-operative characteristics or procedures between the groups. Ventilator-associated pneumonia developed in 10% of post-cardiac surgery patients. Post-operatively, the ventilator-associated pneumonia group required longer ventilation (p < 0.01), more respiratory support, longer cardiac intensive care unit (8 vs 3, p < 0.001) and in-hospital stay (16 vs 9) days. The overall cost for post-operative recovery after cardiac surgery for ventilator-associated pneumonia patients was £15,124 compared to £6295 for non-ventilator-associated pneumonia (p < 0.01). The additional cost of treating patients with ventilator-associated pneumonia was £8829. Ventilator-associated pneumonia was associated with significant morbidity to the patients, generating significant costs. This cost was nearer to the lower end for

  14. Goal-Directed Fluid Therapy Based on Stroke Volume Variation in Patients Undergoing Major Spine Surgery in the Prone Position: A Cohort Study.

    Science.gov (United States)

    Bacchin, Maria Renata; Ceria, Chiara Marta; Giannone, Sandra; Ghisi, Daniela; Stagni, Gaetano; Greggi, Tiziana; Bonarelli, Stefano

    2016-09-15

    A retrospective observational study. The aim of this study was to test whether a goal-directed fluid therapy (GDFT) protocol, based on stroke volume variation (SVV), applied in major spine surgery performed in the prone position, would be effective in reducing peri-operative red blood cells transfusions. Recent literature shows that optimizing perioperative fluid therapy is associated with lower complication rates and faster recovery. Data from 23 patients who underwent posterior spine arthrodesis surgery and whose intraoperative fluid administration were managed with the GDFT protocol were retrospectively collected and compared with data from 23 matched controls who underwent the same surgical procedure in the same timeframe, and who received a liberal intraoperative fluid therapy. Patients in the GDFT group received less units of transfused red blood cells (primary endpoint) in the intra (0 vs. 2.0, P = 0.0 4) and postoperative period (2.0 vs. 4.0, P = 0.003). They also received a lower amount of intraoperative crystalloids, had fewer blood losses, and lower intraoperative peak lactate. In the postoperative period, patients in the GDFT group had fewer pulmonary complications and blood losses from surgical drains, needed less blood product transfusions, had a shorter intensive care unit stay, and a faster return of bowel function. We found no difference in the total length of stay among the two groups. Our study shows that application of a GDFT based on SVV in major spine surgery is feasible and can lead to reduced blood losses and transfusions, better postoperative respiratory performance, shorter ICU stay, and faster return of bowel function. 3.

  15. Incidence, risk factors and the healthcare cost of falls postdischarge after elective total hip and total knee replacement surgery: protocol for a prospective observational cohort study

    Science.gov (United States)

    Hill, Anne-Marie; Ross-Adjie, Gail; McPhail, Steven M; Monterosso, Leanne; Bulsara, Max; Etherton-Beer, Christopher; Powell, Sarah-Jayne; Hardisty, Gerard

    2016-01-01

    Introduction The number of major joint replacement procedures continues to increase in Australia. The primary aim of this study is to determine the incidence of falls in the first 12 months after discharge from hospital in a cohort of older patients who undergo elective total hip or total knee replacement. Methods and analyses A prospective longitudinal observational cohort study starting in July 2015, enrolling patients aged ≥60 years who are admitted for elective major joint replacement (n=267 total hip replacement, n=267 total knee replacement) and are to be discharged to the community. Participants are followed up for 12 months after hospital discharge. The primary outcome measure is the rate of falls per thousand patient-days. Falls data will be collected by 2 methods: issuing a falls diary to each participant and telephoning participants monthly after discharge. Secondary outcomes include the rate of injurious falls and health-related quality of life. Patient-rated outcomes will be measured using the Oxford Hip or Oxford Knee score. Generalised linear mixed modelling will be used to examine the falls outcomes in the 12 months after discharge and to examine patient and clinical characteristics predictive of falls. An economic evaluation will be conducted to describe the nature of healthcare costs in the first 12 months after elective joint replacement and estimate costs directly attributable to fall events. Ethics and dissemination The results will be disseminated through local site networks and will inform future services to support older people undergoing hip or knee joint replacement and also through peer-reviewed publications and medical conferences. This study has been approved by The University of Notre Dame Australia and local hospital human research ethics committees. Trial registration number ACTRN12615000653561; Pre-results. PMID:27412102

  16. Incidence and Risk Factors of Coagulation Profile Derangement After Liver Surgery: Implications for the Use of Epidural Analgesia-A Retrospective Cohort Study.

    Science.gov (United States)

    Jacquenod, Pierre; Wallon, Grégoire; Gazon, Mathieu; Darnis, Benjamin; Pradat, Pierre; Virlogeux, Victor; Farges, Olivier; Aubrun, Frédéric

    2018-04-01

    Hepatic surgery is a major abdominal surgery. Epidural analgesia may decrease the incidence of postoperative morbidities. Hemostatic disorders frequently occur after hepatic resection. Insertion or withdrawal (whether accidental or not) of an epidural catheter during coagulopathic state may cause an epidural hematoma. The aim of the study is to determine the incidence of coagulopathy after hepatectomy, interfering with epidural catheter removal, and to identify the risk factors related to coagulopathy. We performed a retrospective review of a prospective, multicenter, observational database including patients over 18 years old with a history of liver resection. Main collected data were the following: age, preexisting cirrhosis, Child-Pugh class, preoperative and postoperative coagulation profiles, extent of liver resection, blood loss, blood products transfused during surgery. International normalized ratio (INR) ≥1.5 and/or platelet count <80,000/mm defined coagulopathy according to the neuraxial anesthesia guidelines. A logistic regression analysis was performed to assess the association between selected factors and a coagulopathic state after hepatic resection. One thousand three hundred seventy-one patients were assessed. Seven hundred fifty-nine patients had data available about postoperative coagulopathy, which was observed in 53.5% [95% confidence interval, 50.0-57.1]. Maximum derangement in INR occurred on the first postoperative day, and platelet count reached a trough peak on postoperative days 2 and 3. In the multivariable analysis, preexisting hepatic cirrhosis (odds ratio [OR] = 2.49 [1.38-4.51]; P = .003), preoperative INR ≥1.3 (OR = 2.39 [1.10-5.17]; P = .027), preoperative platelet count <150 G/L (OR = 3.03 [1.77-5.20]; P = .004), major hepatectomy (OR = 2.96 [2.07-4.23]; P < .001), and estimated intraoperative blood loss ≥1000 mL (OR = 1.85 [1.08-3.18]; P = .025) were associated with postoperative coagulopathy. Coagulopathy is frequent (53

  17. Does prior coronary artery bypass surgery alter the gender gap in patients presenting with acute coronary syndrome? A 20-year retrospective cohort study.

    Science.gov (United States)

    Al-Aqeedi, Rafid Fayadh; Al Suwaidi, Jassim; Singh, Rajvir; Al Binali, Hajar A

    2012-01-01

    Previous studies demonstrated women presenting with acute coronary syndrome (ACS) have poor outcomes when compared with men 'the gender gap phenomenon'. The impact of prior coronary artery bypass graft (CABG) on women presenting with ACS is unknown. We hypothesised that the gender gap is altered in ACS patients with prior CABG. The aim of this study was to evaluate patients presenting with ACS according to their gender and history of prior CABG. Retrospective, observational (cohort) study. Data were collected from hospital-based registry of patients hospitalised with ACS in Doha, Qatar, from 1991 through 2010. The data were analysed according to their gender and history of prior CABG. A total of 16 750 consecutive patients with ACS were studied. In total, 693 (4.3%) patients had prior CABG; among them 125 (18%) patients were women. Comparisons of clinical characteristics, inhospital treatment, and outcomes, including inhospital mortality and stroke were made. Women with or without prior CABG were older, less likely to be smokers, but more likely to have diabetes mellitus (DM), hypertension and renal impairment than men (p=0.001). Women were less likely to receive reperfusion and early invasive therapies. When compared with men, women without prior CABG carried higher inhospital mortality (11% vs 4.9%; p=0.001) and stroke rates (0.9% vs 0.3%; p=0.001). Female gender was independent predictor of poor outcome. Among prior CABG patients, despite the fact that women had worse baseline characteristics and were less likely to receive evidence-based therapy, there were no significant differences in mortality or stroke rates between the two groups. Consistent with the world literature, women presenting with ACS and without prior CABG had higher death rates compared with men. Patients with prior CABG had comparable death rates regardless of the gender status.

  18. Risk of acute renal failure and mortality after surgery for a fracture of the hip: a population-based cohort study.

    Science.gov (United States)

    Pedersen, A B; Christiansen, C F; Gammelager, H; Kahlert, J; Sørensen, H T

    2016-08-01

    We examined risk of developing acute renal failure and the associated mortality among patients aged > 65 years undergoing surgery for a fracture of the hip. We used medical databases to identify patients who underwent surgical treatment for a fracture of the hip in Northern Denmark between 2005 and 2011. Acute renal failure was classified as stage 1, 2 and 3 according to the Kidney Disease Improving Global Outcome criteria. We computed the risk of developing acute renal failure within five days after surgery with death as a competing risk, and the short-term (six to 30 days post-operatively) and long-term mortality (31 days to 365 days post-operatively). We calculated adjusted hazard ratios (HRs) for death with 95% confidence intervals (CIs). Among 13 529 patients who sustained a fracture of the hip, 1717 (12.7%) developed acute renal failure post-operatively, including 1218 (9.0%) with stage 1, 364 (2.7%) with stage 2, and 135 (1.0%) with stage 3 renal failure. The short-term mortality was 15.9% and 5.6% for patients with and without acute renal failure, respectively (HR 2.8, 95% CI 2.4 to 3.2). The long-term mortality was 25.0% and 18.3% for those with and without acute renal failure, respectively (HR 1.3, 95% CI 1.2 to 1.5). The mortality was higher in patients with an increased severity of renal failure. Acute renal failure is a common complication of surgery in elderly patients who sustain a fracture of the hip, and is associated with increased mortality up to one year after surgery despite adjustment for coexisting comorbidity and medication before surgery. Cite this article: Bone Joint J 2016;98-B:1112-18. ©2016 The British Editorial Society of Bone & Joint Surgery.

  19. Comparisons of Objective Sleep Quality Between Elderly Individuals With and Without Cataract Surgery: A Cross-Sectional Study of the HEIJO-KYO Cohort

    Directory of Open Access Journals (Sweden)

    Kenji Obayashi

    2015-08-01

    Full Text Available Background: Cataract surgery (CS drastically increases the capacity for light reception to the retina. Several previous studies have suggested the beneficial effect of CS on subjectively measured sleep quality; however, the association between CS and objectively measured sleep quality remains uncertain. Methods: To evaluate the association between CS and objectively measured sleep quality in home settings, we conducted a cross-sectional study in 1037 elderly individuals (mean age, 71.9 years. We evaluated actigraphically measured sleep quality, urinary 6-sulfatoxymelatonin excretion, and ambulatory light levels, in addition to CS status. Results: The CS group (n = 174 showed significantly higher sleep efficiency and shorter wake after sleep onset than the no CS group (n = 863, even after adjustment for age, gender, body mass index, current smoking status, alcohol consumption, hypertension, diabetes, sleep medication, bedtime, rising time, daytime physical activity, daytime and nighttime light exposure, and urinary 6-sulfatoxymelatonin excretion (sleep efficiency: 85.8% in the CS group vs 84.4% in the no CS group, P = 0.042; wake after sleep onset: 45.7 min vs 50.6 min, respectively, P = 0.033. In contrast, urinary 6-sulfatoxymelatonin excretion, sleep onset latency, total sleep time, and sleep-mid time did not differ significantly between the CS and no CS groups. Conclusions: Among a community-dwelling elderly population, CS is significantly associated with objectively measured sleep quality, but urinary levels of melatonin metabolite do not differ between individuals with and without CS. These associations are independent of daily light exposure profiles.

  20. Ketorolac and Other NSAIDs Increase the Risk of Anastomotic Leakage After Surgery for GEJ Cancers: a Cohort Study of 557 Patients

    DEFF Research Database (Denmark)

    Fjederholt, Kaare Terp; Okholm, Cecilie; Svendsen, Lars Bo

    2018-01-01

    in the western world and surgery is the curative treatment modality of choice. Anastomotic leakage is a feared complication of gastro-esophageal surgery, as it increases recurrence, morbidity, and mortality. Nonsteroidal anti-inflammatory drugs are widely used for postoperative pain relief. Nonsteroidal anti....... Data were collected from a prospective maintained database, the Danish National Patient Registry, and patient medical records. Data were analyzed using univariate and multivariate statistical models and were stratified for theoretical confounders. RESULTS: In univariate analysis, we did not observe any...

  1. Conditioned pain modulation and situational pain catastrophizing as preoperative predictors of pain following chest wall surgery: a prospective observational cohort study.

    Directory of Open Access Journals (Sweden)

    Kasper Grosen

    Full Text Available Variability in patients' postoperative pain experience and response to treatment challenges effective pain management. Variability in pain reflects individual differences in inhibitory pain modulation and psychological sensitivity, which in turn may be clinically relevant for the disposition to acquire pain. The aim of this study was to investigate the effects of conditioned pain modulation and situational pain catastrophizing on postoperative pain and pain persistency.Preoperatively, 42 healthy males undergoing funnel chest surgery completed the Spielberger's State-Trait Anxiety Inventory and Beck's Depression Inventory before undergoing a sequential conditioned pain modulation paradigm. Subsequently, the Pain Catastrophizing Scale was introduced and patients were instructed to reference the conditioning pain while answering. Ratings of movement-evoked pain and consumption of morphine equivalents were obtained during postoperative days 2-5. Pain was reevaluated at six months postoperatively.Patients reporting persistent pain at six months follow-up (n = 15 were not significantly different from pain-free patients (n = 16 concerning preoperative conditioned pain modulation response (Z = 1.0, P = 0.3 or level of catastrophizing (Z = 0.4, P = 1.0. In the acute postoperative phase, situational pain catastrophizing predicted movement-evoked pain, independently of anxiety and depression (β = 1.0, P = 0.007 whereas conditioned pain modulation predicted morphine consumption (β = -0.005, P = 0.001.Preoperative conditioned pain modulation and situational pain catastrophizing were not associated with the development of persistent postoperative pain following funnel chest repair. Secondary outcome analyses indicated that conditioned pain modulation predicted morphine consumption and situational pain catastrophizing predicted movement-evoked pain intensity in the acute postoperative phase. These findings may have

  2. Cataract surgery in a population-based cohort of patients with type 1 diabetes

    DEFF Research Database (Denmark)

    Grauslund, Jakob; Green, Anders; Sjølie, Anne K

    2011-01-01

    .05-3.40) were the only statistically significant predictors of cataract surgery. Duration of diabetes, gender, glycaemic regulation, proteinuria, smoking, blood pressure and level of retinopathy were not associated with cataract surgery. Conclusion: Type 1 diabetes is associated with a high long-term incidence......ABSTRACT. Purpose: To estimate the long-term cumulative incidence of cataract surgery and associated risk factors in a 25-year follow-up of a population-based cohort of patients with type 1 diabetes. Methods: Based on insulin prescriptions, a population-based cohort of 727 patients with type 1...... of surgery were 59.3 and 42 years, respectively. Cataract surgery in the cohort took place approximately 20 years earlier compared to non-diabetic persons. In a multivariate regression analysis, baseline age [hazard ratio (HR) 1.89 per 10 years, 95% CI 1.46-2.27] and maculopathy (HR 1.89, 95% CI 1...

  3. Perioperative change in creatinine following cardiac surgery with cardiopulmonary bypass is useful in predicting acute kidney injury: a single-centre retrospective cohort study.

    Science.gov (United States)

    Takaki, Shunsuke; Shehabi, Yahya; Pickering, John W; Endre, Zoltan; Miyashita, Tetsuya; Goto, Takahisa

    2015-10-01

    Acute kidney injury is common following cardiac surgery. Experimental models of acute kidney injury suggest that successful therapy should be implemented within 24-48 h of renal injury. However, it is difficult to detect acute kidney injury shortly after cardiac surgery, because creatinine concentration is diluted by cardiopulmonary bypass. We hypothesized that, following cardiopulmonary bypass, creatinine reduction ratios would correlate with haematocrit reduction ratios and would be associated with the incidence of acute kidney injury. We collected demographic and blood test data from consecutive patients (n = 1137) who had undergone cardiac surgery with cardiopulmonary bypass. The creatinine reduction ratio was calculated as follows: (preoperative creatinine-postoperative creatinine)/preoperative creatinine. Patients were assigned to either of two groups. The first group (Group 1) was used to determine the threshold for acute kidney injury, and the second group (Group 2) was used to assess diagnostic performance. Acute kidney injury was defined as an increase in serum creatinine level >0.3 mg/dl or >150% from baseline. The incidence of acute kidney injury was 14.5% (79/545) in Group 1 and 15.5% (92/592) in Group 2. Postoperatively, creatinine concentration correlated strongly with haematocrit concentration (Pearson's r(2): 0.91). In Group 1, the area under the receiver operating characteristic curve, sensitivity and specificity were 0.71, 64.1 and 66.4%, respectively, for creatinine reduction ratios of creatinine reduction ratio performance were 4.3 (95% confidence interval 2.6-7.0), 0.27 (0.21-0.32), 0.92 (0.89-0.95) and 3.42 (2.22-5.27), respectively. The creatinine reduction ratio may be associated with perioperative renal injury. Therefore, it is a good diagnostic indicator with high performance, and may be useful in detecting acute kidney injury at an earlier stage relative to conventional means. In addition, using creatinine reduction ratios in this manner

  4. Comparison of dissection with harmonic scalpel and conventional bipolar electrocautery in deep inferior epigastric perforator flap surgery: A consecutive cohort study.

    Science.gov (United States)

    Lee, Yoon Jae; Kim, Hak Young; Han, Hyun Ho; Moon, Suk-Ho; Byeon, Jun Hee; Rhie, Jong Won; Ahn, Sang Tae; Oh, Deuk Young

    2017-02-01

    Reduced tissue damage is a theoretical advantage of using an ultrasonic harmonic scalpel. We hypothesized that the harmonic scalpel would outperform electrocautery in deep inferior epigastric perforator flap surgery, possibly resulting in a shorter operative time and reduced postoperative drainage and pain. Between January and August 2015, 24 consecutive patients were assigned to immediate deep inferior epigastric perforator flap elevation (12 for bipolar electrocautery and 12 for harmonic scalpel). The main outcome variables were total operative time, flap elevation time (starting from the fascia incision), and drainage volume. We compared the number of perforators isolated and the Moon and Taylor classification of the pedicle. Data were tested for normality using the Kolmogorov-Smirnov test before analysis. Continuous variables were compared by Wilcoxon rank-sum test. Data were analyzed using the statistical software SAS, version 9.3 (SAS Institute, Cary, NC, USA). Both groups were comparable with respect to clinical characteristics (mean age, body mass index, and flap weights). There was a statistically significant difference in the operative time between dissection with the harmonic scalpel and electrocautery (305.2 vs. 380.3 min, respectively, p = 0.002). The flap elevation time was reduced, particularly when using the harmonic scalpel where its usage seems crucial for dissecting deep inferior epigastric perforators (59.8 vs. 145.9 min, respectively, p electrocautery. Copyright © 2016 British Association of Plastic, Reconstructive and Aesthetic Surgeons. Published by Elsevier Ltd. All rights reserved.

  5. CEA to peritoneal carcinomatosis index (PCI) ratio is prognostic in patients with colorectal cancer peritoneal carcinomatosis undergoing cytoreduction surgery and intraperitoneal chemotherapy: A retrospective cohort study.

    Science.gov (United States)

    Kozman, Mathew A; Fisher, Oliver M; Rebolledo, Bree-Anne J; Parikh, Roneil; Valle, Sarah J; Arrowaili, Arief; Alzahrani, Nayef; Liauw, Winston; Morris, David L

    2018-03-01

    Serum tumor markers are prognostic in patients with colorectal cancer peritoneal carcinomatosis (CRPC) undergoing cytoreductive surgery (CRS) and intraperitoneal chemotherapy (IPC). Assessment of the ratio of tumor marker to volume, as depicted by peritoneal carcinomatosis index (PCI), and how this may affect overall (OS) and recurrence free survival (RFS) has not been reported. Survival effect of this ratio was analyzed in patients with CRPC managed from 1996 to 2016 with CRS and IPC. Of 260 patients included, those with low CEA/PCI ratio (PCI ratio was most pronounced in patients with PCI ≤ 10 (OS of 72 vs 30 months, P PCI ratio was independently associated with poorer OS (adjusted HR 1.85, 95%CI 1.11-3.10, P = 0.02) and RFS (adjusted HR 1.58, 95%CI 1.04-2.41, P = 0.03). CEA/PCI ratio is an independent prognostic factor for OS and RFS in CRPC. This novel approach allows both tumor activity and volume to be accounted for in one index, thus potentially providing a more accurate indication of tumor biological behavior. © 2017 Wiley Periodicals, Inc.

  6. Methodology Series Module 1: Cohort Studies.

    Science.gov (United States)

    Setia, Maninder Singh

    2016-01-01

    Cohort design is a type of nonexperimental or observational study design. In a cohort study, the participants do not have the outcome of interest to begin with. They are selected based on the exposure status of the individual. They are then followed over time to evaluate for the occurrence of the outcome of interest. Some examples of cohort studies are (1) Framingham Cohort study, (2) Swiss HIV Cohort study, and (3) The Danish Cohort study of psoriasis and depression. These studies may be prospective, retrospective, or a combination of both of these types. Since at the time of entry into the cohort study, the individuals do not have outcome, the temporality between exposure and outcome is well defined in a cohort design. If the exposure is rare, then a cohort design is an efficient method to study the relation between exposure and outcomes. A retrospective cohort study can be completed fast and is relatively inexpensive compared with a prospective cohort study. Follow-up of the study participants is very important in a cohort study, and losses are an important source of bias in these types of studies. These studies are used to estimate the cumulative incidence and incidence rate. One of the main strengths of a cohort study is the longitudinal nature of the data. Some of the variables in the data will be time-varying and some may be time independent. Thus, advanced modeling techniques (such as fixed and random effects models) are useful in analysis of these studies.

  7. Methodology series module 1: Cohort studies

    Directory of Open Access Journals (Sweden)

    Maninder Singh Setia

    2016-01-01

    Full Text Available Cohort design is a type of nonexperimental or observational study design. In a cohort study, the participants do not have the outcome of interest to begin with. They are selected based on the exposure status of the individual. They are then followed over time to evaluate for the occurrence of the outcome of interest. Some examples of cohort studies are (1 Framingham Cohort study, (2 Swiss HIV Cohort study, and (3 The Danish Cohort study of psoriasis and depression. These studies may be prospective, retrospective, or a combination of both of these types. Since at the time of entry into the cohort study, the individuals do not have outcome, the temporality between exposure and outcome is well defined in a cohort design. If the exposure is rare, then a cohort design is an efficient method to study the relation between exposure and outcomes. A retrospective cohort study can be completed fast and is relatively inexpensive compared with a prospective cohort study. Follow-up of the study participants is very important in a cohort study, and losses are an important source of bias in these types of studies. These studies are used to estimate the cumulative incidence and incidence rate. One of the main strengths of a cohort study is the longitudinal nature of the data. Some of the variables in the data will be time-varying and some may be time independent. Thus, advanced modeling techniques (such as fixed and random effects models are useful in analysis of these studies.

  8. Surgery-induced changes and early recovery of hip-muscle strength, leg-press power, and functional performance after fast-track total hip arthroplasty: a prospective cohort study.

    Directory of Open Access Journals (Sweden)

    Bente Holm

    Full Text Available By measuring very early changes in muscle strength and functional performance after fast-track total hip arthroplasty (THA, post-operative rehabilitation, introduced soon after surgery, can be designed to specifically target identified deficits.Firstly, to quantify changes (compared to pre-operative values in hip muscle strength, leg-press power, and functional performance in the first week after THA, and secondly, to explore relationships between the muscle strength changes, and changes in hip pain, systemic inflammation, and thigh swelling.Prospective, cohort study.Convenience sample of patients receiving a THA at Copenhagen University Hospital, Hvidovre, Denmark, between March and December 2011.Thirty-five patients (65.9 ± 7.2 years undergoing THA.Hip muscle strength, leg-press power, performance-based function, and self-reported disability were determined prior to, and 2 and 8 days after, THA (Day 2 and 8, respectively. Hip pain, thigh swelling, and C-Reactive Protein were also determined.Five patients were lost to follow-up. Hip muscle strength and leg press power were substantially reduced at Day 2 (range of reductions: 41-58%, P<0.001, but less pronounced at Day 8 (range of reductions: 23-31%, P<0.017. Self-reported symptoms and function (HOOS: Pain, Symptoms, and ADL improved at Day 8 (P<0.014. Changes in hip pain, C-Reactive Protein, and thigh swelling were not related to the muscle strength and power losses.Hip muscle strength and leg-press power decreased substantially in the first week after THA - especially at Day 2 - with some recovery at Day 8. The muscle strength loss and power loss were not related to changes in hip pain, systemic inflammation, or thigh swelling. In contrast, self-reported symptoms and function improved. These data on surgery-induced changes in muscle strength may help design impairment-directed, post-operative rehabilitation to be introduced soon after surgery.ClinicalTrials.gov NCT01246674.

  9. Depression, anxiety and major adverse cardiovascular and cerebrovascular events in patients following coronary artery bypass graft surgery : A five year longitudinal cohort study

    NARCIS (Netherlands)

    Tully, P.J.; Winefield, H.R.; Baker, R.A.; Denollet, Johan; Pedersen, S.S.; Wittert, G.A.; Turnbull, D.

    2015-01-01

    Background Although depression and anxiety have been implicated in risk for major adverse cardiovascular and cerebrovascular events (MACCE), a theoretical approach to identifying such putative links is lacking. The objective of this study was to examine the association between theoretical

  10. Depression, anxiety and major adverse cardiovascular and cerebrovascular events in patients following coronary artery bypass graft surgery: A five year longitudinal cohort study

    NARCIS (Netherlands)

    P.J. Tully (Phillip); H.R. Winefield (Helen); R.A. Baker (Robert); J. Denollet (Johan); S.S. Pedersen (Susanne); G.A. Wittert (Gary); D.A. Turnbull (Deborah)

    2015-01-01

    textabstractBackground: Although depression and anxiety have been implicated in risk for major adverse cardiovascular and cerebrovascular events (MACCE), a theoretical approach to identifying such putative links is lacking. The objective of this study was to examine the association between

  11. Effectiveness of the Surgery Core Clerkship Flipped Classroom: a prospective cohort trial.

    Science.gov (United States)

    Liebert, Cara A; Lin, Dana T; Mazer, Laura M; Bereknyei, Sylvia; Lau, James N

    2016-02-01

    The flipped classroom has been proposed as an alternative curricular approach to traditional didactic lectures but has not been previously applied to a surgery clerkship. A 1-year prospective cohort of students (n = 89) enrolled in the surgery clerkship was taught using a flipped classroom approach. A historical cohort of students (n = 92) taught with a traditional lecture curriculum was used for comparison. Pretest and post-test performance, end-of-clerkship surveys, and National Board of Medical Examiners (NBME) scores were analyzed to assess effectiveness. Mean pretest and post-test scores increased across all modules (P flipped classroom contributed to this increase. Implementation of a flipped classroom in the surgery clerkship is feasible and results in high learner satisfaction, effective knowledge acquisition, and increased career interest in surgery with noninferior NBME performance. Copyright © 2016 Elsevier Inc. All rights reserved.

  12. Anterior or posterior surgery for right thoracic adolescent idiopathic scoliosis (AIS)? A prospective cohorts' comparison using radiologic and functional outcomes.

    Science.gov (United States)

    Rushton, Paul R P; Grevitt, Michael P; Sell, Philip J

    2015-04-01

    Prospective cohort study. Prospectively compare patient-reported as well as clinical and radiologic outcomes after anterior or posterior surgery for right thoracic adolescent idiopathic scoliosis (AIS) in a single center by the same surgeons. Anterior and posterior spinal instrumentation and arthrodesis are both well-established treatments of thoracic AIS. The majority of studies comparing the 2 approaches have focused on radiographic outcomes. There remains a paucity of prospectively gathered patient-reported outcomes comparing surgical approaches. Forty-two consecutive patients with right thoracic AIS were treated in a single center by one of 2 surgeons with either anterior (n=18) or posterior (n=24) approaches and followed up for over 2 years. Radiographic, clinical, and patient-reported outcomes of the Modified Scoliosis Research Society Outcome Instrument were gathered and analyzed by an independent surgeon. Patients reported significant improvements in all areas of the Modified Scoliosis Research Society Outcome Instrument, especially pain and self-image domains. There were no significant differences in the degree of improvement in any domains between the groups. Posterior and anterior surgery corrected rib hump by 53% and 61%, respectively (P=0.4). The Main thoracic curve Cobb angle was corrected from 69 to 26 degrees (62%) by posterior surgery and 61 to 23 degrees (64%) by anterior surgery (P=0.6). Posterior surgery significantly reduced kyphosis and lumbosacral lordosis. Anterior surgery had no overall affect of sagittal alignment but seemed able to correct those hypokyphotic preoperatively. Complications differed and were largely approach-related--intrathoracic in anterior and wound-related in posterior surgery. Patients with right thoracic AIS of differing curve types but otherwise similar preoperatively demonstrated that anterior and posterior surgery are largely equivalent. Patient-reported outcomes are improved similarly by either approach. Both offer

  13. A nationwide study on anastomotic leakage after colonic cancer surgery

    DEFF Research Database (Denmark)

    Krarup, Peter-Martin; Jorgensen, L N; Andreasen, A H

    2012-01-01

    Aim: Anastomotic leakage (AL) is a major challenge in colorectal cancer surgery due to increased morbidity and mortality. Possible risk factors should be investigated differentially, distinguishing between rectal and colonic surgery in large-scale studies to avoid selection bias and confounding....... Method: The incidence and risk factors associated with AL were analysed in an unselected nation-wide prospective cohort of patient subjected to curative colonic cancer surgery with primary anastomosis and entered into The Danish Colorectal Cancer Group database between May 2001 and December 2008. Results......: AL occurred in 593 (6.4%) of 9333 patients. Laparoscopic surgery (odds ratio [OR], 1.34; 95% confidence interval [CI], 1.05-1.70; P = 0.03); left hemicolectomy (OR, 2.02; 95% CI, 1.50-2.72) or sigmoid colectomy (OR, 1.69; 95% CI, 1.32-2.17; P = 0.01); intraoperative blood loss (OR, 1.04; 95% CI, 1...

  14. Management and outcomes in digestive cancer surgery: design and initial results of a multicenter cohort study Proceso asistencial y resultados en la cirugía de cáncer digestivo: diseño y resultados iniciales de un estudio de cohortes multicéntrico

    Directory of Open Access Journals (Sweden)

    M. Espallargues

    2009-10-01

    Full Text Available Background: most studies that analyze the influence of structure factors on clinical outcomes are retrospective, based on clinical-administrative databases, and mainly focusing on surgical volume. Objective: to study variations in the process and outcomes of oncologic surgery for esophagus, stomach, pancreas, liver metastases and rectum cancers in Catalonia, as well as the factors associated with these variations. Patients and method: a retrospective (2002 and prospective (2003-05 multicenter cohort study. Data forms were designed to collect patient, process, and care outcome characteristics before surgery, at hospital discharge, and at 3 and 6 months after discharge. Main outcome measures were hospital and follow-up mortality, complications, re-interventions, and relapse rates. Results: 49 hospitals (80% participated in the retrospective phase, 44 of which (90% also participated in the prospective phase: 3,038 patients (98% were included. No differences were observed in the profile of operated patients according to hospital level of complexity, but clinical-pathological staging and other functional status variables could not be assessed because of over 20% of missing values. There was significant variability in the volume of interventions as well as in certain aspects of the healthcare process depending on type of cancer and center complexity. High rates of esophageal cancer mortality (18.2% at discharge, 27.3% at 6 months and of complications and re-interventions for all cancers assessed, especially rectal cancer (18.4% re-interventions at 6 months, were identified. Conclusions: the study of the variability identified will require adequate risk-adjustment and should take into account different structure factors. It is necessary that information included in medical records be improved.Antecedentes: la mayoría de estudios que analizan la influencia de factores de estructura sobre los resultados son retrospectivos, realizados con bases de datos

  15. Riyadh Mother and Baby Multicenter Cohort Study: The Cohort Profile.

    Directory of Open Access Journals (Sweden)

    Hayfaa Wahabi

    Full Text Available To assess the effects of non-communicable diseases, such as diabetes, hypertension and obesity, on the mother and the infant.A multicentre cohort study was conducted in three hospitals in the city of Riyadh in Saudi Arabia. All Saudi women and their babies who delivered in participating hospitals were eligible for recruitment. Data on socio-demographic characteristics in addition to the maternal and neonatal outcomes of pregnancy were collected. The cohort demographic profile was recorded and the prevalence of maternal conditions including gestational diabetes, pre-gestational diabetes, hypertensive disorders in pregnancy and obesity were estimated.The total number of women who delivered in participating hospitals during the study period was 16,012 of which 14,568 women participated in the study. The mean age of the participants was 29 ± 5.9 years and over 40% were university graduates. Most of the participants were housewives, 70% were high or middle income and 22% were exposed to secondhand smoke. Of the total cohort, 24% were married to a first cousin. More than 68% of the participants were either overweight or obese. The preterm delivery rate was 9%, while 1.5% of the deliveries were postdate. The stillbirth rate was 13/1000 live birth. The prevalence of gestational diabetes was 24% and that of pre-gestational diabetes was 4.3%. The preeclampsia prevalence was 1.1%. The labour induction rate was 15.5% and the cesarean section rate was 25%.Pregnant women in Saudi Arabia have a unique demographic profile. The prevalence of obesity and diabetes in pregnancy are among the highest in the world.

  16. Cohort profile: The Limache, Chile, birth cohort study.

    Science.gov (United States)

    Amigo, Hugo; Bustos, Patricia; Zumelzú, Elinor; Rona, Roberto J

    2014-08-01

    The Limache cohort was set up to assess the programming and life course events hypotheses in relation to cardiovascular risk factors and chronic respiratory conditions, especially asthma, in the context of an unprecedented economic growth in Chile. The cohort was a representative sample of 1232 participants born between 1974 and 1978 in the hospital of Limache. The study includes data collected at birth, during the 1st year of life, at 22 to 28 years (collected between 2000 and 2002) and at 32 to 38 years (collected between 2010 and 2012). The data collected include anthropometric measurements at birth, 1st year of life and in adulthood, socio-economic and demographic data, lifestyle information including smoking, alcohol consumption and food intake, respiratory symptoms, lung function, broncho-reactivity to methacholine and skin prick reaction to eight allergens, measurement of cardiovascular risk factors and information on common mental health, mainly in the most recent study. The principal researchers welcome collaborative projects, especially those that will compare similar data sets in other settings. Published by Oxford University Press on behalf of the International Epidemiological Association © The Author 2013; all rights reserved.

  17. [Ethical considerations in genomic cohort study].

    Science.gov (United States)

    Choi, Eun Kyung; Kim, Ock-Joo

    2007-03-01

    During the last decade, genomic cohort study has been developed in many countries by linking health data and genetic data in stored samples. Genomic cohort study is expected to find key genetic components that contribute to common diseases, thereby promising great advance in genome medicine. While many countries endeavor to build biobank systems, biobank-based genome research has raised important ethical concerns including genetic privacy, confidentiality, discrimination, and informed consent. Informed consent for biobank poses an important question: whether true informed consent is possible in population-based genomic cohort research where the nature of future studies is unforeseeable when consent is obtained. Due to the sensitive character of genetic information, protecting privacy and keeping confidentiality become important topics. To minimize ethical problems and achieve scientific goals to its maximum degree, each country strives to build population-based genomic cohort research project, by organizing public consultation, trying public and expert consensus in research, and providing safeguards to protect privacy and confidentiality.

  18. Surgical complications after open and laparoscopic surgery for perforated peptic ulcer in a nationwide cohort

    DEFF Research Database (Denmark)

    Wilhelmsen, M.; Møller, M H; Rosenstock, S

    2015-01-01

    BACKGROUND: Surgery for perforated peptic ulcer (PPU) is associated with a risk of complications. The frequency and severity of reoperative surgery is poorly described. The aims of the present study were to characterize the frequency, procedure-associated risk and mortality associated...

  19. Pre- and/or Intra-Operative Prescription of Diuretics, but Not Renin-Angiotensin-System Inhibitors, Is Significantly Associated with Acute Kidney Injury after Non-Cardiac Surgery: A Retrospective Cohort Study.

    Science.gov (United States)

    Tagawa, Miho; Ogata, Ai; Hamano, Takayuki

    2015-01-01

    Pre- and/or intra-operative use of diuretics, angiotensin-converting enzyme inhibitors (ACE-I) or angiotensin II receptor blockers (ARB) constitutes a potentially modifiable risk factor for postoperative acute kidney injury (AKI). It has been studied whether use of these drugs predicts AKI after cardiac surgery. The objective of this study was to examine whether administration of these agents was independently associated with AKI after non-cardiac surgery. This was a retrospective observational study. Inclusion criteria were adult patients (age ≥ 18) who underwent non-cardiac surgery under general anesthesia from 2007 to 2009 at Kyoto Katsura Hospital. Exclusion criteria were urological surgery, missing creatinine values, and preoperative dialysis. The exposures of interest were pre- and/or intra-operative use of diuretics or ACE-I/ARB. Outcome variables were postoperative AKI as defined by the AKI Network (increase in creatinine ≥ 0.3 mg/dL or 150% within 48 hours, or urine output 6 hours). Multivariable logistic regression analyses were conducted and adjusted for potential confounders. Propensity scores (PS) for receiving diuretics or ACE-I/ARB therapy were estimated and PS adjustment, PS matching, and inverse probability weighting were performed. There were 137 AKI cases (5.0%) among 2,725 subjects. After statistical adjustment for patient and surgical characteristics, odds (95% CI) of postoperative AKI were 2.07 (1.10-3.89) (p = 0.02) and 0.89 (0.56-1.42) (p = 0.63) in users of diuretics and ACE-I/ARB, respectively, compared with non-users. PS adjustment, PS matching, and inverse probability weighting yielded similar results. The effect size of diuretics was significantly greater in the patients with lower propensity for diuretic use (p for interaction diuretics, but not ACE-I/ARB, was independently associated with postoperative AKI after non-cardiac surgery, especially in patients with low propensity for diuretic use. It might be reasonable to withhold

  20. Cohort studies in health sciences librarianship.

    Science.gov (United States)

    Eldredge, Jonathan

    2002-10-01

    What are the key characteristics of the cohort study design and its varied applications, and how can this research design be utilized in health sciences librarianship? The health, social, behavioral, biological, library, earth, and management sciences literatures were used as sources. All fields except for health sciences librarianship were scanned topically for either well-known or diverse applications of the cohort design. The health sciences library literature available to the author principally for the years 1990 to 2000, supplemented by papers or posters presented at annual meetings of the Medical Library Association. A narrative review for the health, social, behavioral, biological, earth, and management sciences literatures and a systematic review for health sciences librarianship literature for the years 1990 to 2000, with three exceptions, were conducted. The author conducted principally a manual search of the health sciences librarianship literature for the years 1990 to 2000 as part of this systematic review. The cohort design has been applied to answer a wide array of theoretical or practical research questions in the health, social, behavioral, biological, and management sciences. Health sciences librarianship also offers several major applications of the cohort design. The cohort design has great potential for answering research questions in the field of health sciences librarianship, particularly evidence-based librarianship (EBL), although that potential has not been fully explored.

  1. Prostate Cancer Biospecimen Cohort Study

    Science.gov (United States)

    2017-10-01

    opinions and/or findings contained in this report are those of the author(s) and should not be construed as an official Department of the Army...SPONSOR/MONITOR’S REPORT NUMBER(S) 12. DISTRIBUTION / AVAILABILITY STATEMENT Approved for Public Release; Distribution Unlimited 13. SUPPLEMENTARY NOTES...14. ABSTRACT The goal of the study is development of a Prostate Cancer Biorepository Network (PCBN) resource site with high quality and well

  2. Anesthesia and Poliomyelitis: A Matched Cohort Study.

    Science.gov (United States)

    Van Alstine, Luke W; Gunn, Paul W; Schroeder, Darrell R; Hanson, Andrew C; Sorenson, Eric J; Martin, David P

    2016-06-01

    Poliomyelitis is a viral infectious disease caused by 1 of the 3 strains of poliovirus. The World Health Organization launched an eradication campaign in 1988. Although the number of cases of poliomyelitis has drastically declined, eradication has not yet been achieved, and there are a substantial number of survivors of the disease. Survivors of poliomyelitis present a unique set of challenges to the anesthesiologist. The scientific literature regarding the anesthetic management of survivors of poliomyelitis, however, is limited and primarily experiential in nature. Using a retrospective, matched cohort study, we sought to more precisely characterize the anesthetic implications of poliomyelitis and to determine what risks, if any, may be present for patients with a history of the disease. Using the Mayo Clinic Life Sciences System Data Discovery and Query Builder, study subjects were identified as those with a history of paralytic poliomyelitis who had undergone major surgery at Mayo Clinic Rochester between 2005 and 2009. For each case, 2 sex- and age-matched controls that underwent the same surgical procedure during the study period were randomly selected from a pool of possible controls. Medical records were manually interrogated with respect to demographic variables, comorbid conditions, operative and anesthetic course, and postoperative course. We analyzed 100 cases with 2:1 matched controls and found that the peri- and postoperative courses were very similar for both groups of patients. Pain scores, postanesthesia care unit admission, length of postanesthesia care unit stay, intensive care unit admission, length of intensive care unit stay, and initial extubation location were not significantly different between the 2 groups. Looking at pulmonary complications in our primary outcome, there was no significant difference between the 2 groups (17% vs 14% for polio versus control, respectively; conditional logistic regression odds ratio = 1.5; 95% confidence

  3. Historic cohort study in Montreal's fur industry.

    Science.gov (United States)

    Guay, D; Siemiatycki, J

    1987-01-01

    A historic cohort mortality study was carried out among two groups of male workers in the Montreal fur industry: 263 dressers and dyers and 599 fur garment manufacturers. The first group is exposed to a very wide variety of chemicals used in tanning, cleaning, and dyeing fur, including substances considered to be carcinogenic and/or mutagenic. The second group is exposed to residue from the dressing and dyeing stage and to respirable fur dust. The cohorts consisted of all active members of two unions as of January 1, 1966. The mean age of the workers was 43.2 and the mean number of years since first employment 14.1. The follow-up period was from January 1, 1966, to December 31, 1981; 95% of the workers were successfully traced. Observed deaths were compared with those expected based on mortality rates of the population of metropolitan Montreal. Standardized mortality ratios (SMRs) for the manufacturers were significantly low, probably because of the ethnic composition of the cohort and a healthy worker effect. SMRs for the dressers and dyers were also low, but not as low as for the manufacturers. When attention was restricted to the French Canadians in the cohort, the observed deaths were close to the expected; there was a noteworthy excess of colorectal cancer (four observed, 0.8 expected) for dressers and dyers. Apart from this weak suggestive evidence, the results did not indicate any excess mortality risks in the fur industry. However, because of the relatively small number of expected and observed deaths in the cohort and especially among the heavily exposed dressers and dyers, the confidence intervals around SMR estimates were wide and excess risks cannot be ruled out.

  4. The Effect of Hypothyroidism on a Composite of Mortality, Cardiovascular and Wound Complications After Noncardiac Surgery: A Retrospective Cohort Analysis.

    Science.gov (United States)

    Komatsu, Ryu; You, Jing; Mascha, Edward J; Sessler, Daniel I; Kasuya, Yusuke; Turan, Alparslan

    2015-09-01

    We tested the hypothesis that hypothyroidism, as defined by thyroid-stimulating hormone (TSH) concentration, is associated with a severity-weighted composite of mortality and major cardiovascular and infectious complications after noncardiac surgery. In this retrospective cohort study, we evaluated adults at the Cleveland Clinic Main Campus between 2005 and 2012, who had had available TSH concentrations within the 6 months before noncardiac surgery. Patients were categorized as (1) hypothyroid (patients who had diagnosis of hypothyroidism any time prior to surgery and increased TSH value (> 5.5 mIU/L) within 6 months prior to surgery); (2) treated (hypothyroid diagnosis and normal TSH concentrations [0.4-5.5 mIU/L]); and (3) euthyroid (no hypothyroid diagnosis and normal TSH concentrations). We conducted pairwise comparisons among the 3 groups using inverse propensity score weighting to control for observed confounding variables. Average relative effect generalized estimating equation model was used for the primary outcome composite of in-hospital cardiovascular morbidity, surgical wound complication or infection, and mortality. Logistic regression and Cox proportional hazards regression were used for secondary outcomes of intraoperative vasopressor use and duration of hospitalization, respectively. We identified 800 hypothyroid patients (median TSH: 8.6 mIU/L [Q1, Q3: 6.5, 13.0]), 1805 treated patients (2.0 mIU/L [1.1, 3.2]), and 5612 euthyroid patients (1.7 mIU/L [1.1, 2.6]). There were no significant differences among the hypothyroid, treated, and euthyroid patients on the primary composite outcome (all P values ≥0.30). Hypothyroid patients were slightly more likely to receive vasopressor during surgery than either treated (odds ratio, 1.17; 99.2% confidence interval [CI], 1.01-1.36) or euthyroid (odds ratio, 1.12; 99.2% CI, 1.02-1.24) patients. Furthermore, hypothyroid patients were slightly but significantly less likely to be discharged at any given

  5. Pre-Surgery Depression and Confidence to Manage Problems Predict Recovery Trajectories of Health and Wellbeing in the First Two Years following Colorectal Cancer: Results from the CREW Cohort Study.

    Directory of Open Access Journals (Sweden)

    Claire Foster

    Full Text Available This paper identifies predictors of recovery trajectories of quality of life (QoL, health status and personal wellbeing in the two years following colorectal cancer surgery.872 adults receiving curative intent surgery during November 2010 to March 2012. Questionnaires at baseline, 3, 9, 15, 24 months post-surgery assessed QoL, health status, wellbeing, confidence to manage illness-related problems (self-efficacy, social support, co-morbidities, socio-demographic, clinical and treatment characteristics. Group-based trajectory analyses identified distinct trajectories and predictors for QoL, health status and wellbeing.Four recovery trajectories were identified for each outcome. Groups 1 and 2 fared consistently well (scores above/within normal range; 70.5% of participants for QoL, 33.3% health status, 77.6% wellbeing. Group 3 had some problems (24.2% QoL, 59.3% health, 18.2% wellbeing; Group 4 fared consistently poorly (5.3% QoL, 7.4% health, 4.2% wellbeing. Higher pre-surgery depression and lower self-efficacy were significantly associated with poorer trajectories for all three outcomes after adjusting for other important predictors including disease characteristics, stoma, anxiety and social support.Psychosocial factors including self-efficacy and depression before surgery predict recovery trajectories in QoL, health status and wellbeing following colorectal cancer treatment independent of treatment or disease characteristics. This has significant implications for colorectal cancer management as appropriate support may be improved by early intervention resulting in more positive recovery experiences.

  6. [Application of cohort study in cancer prevention and control].

    Science.gov (United States)

    Dai, Min; Bai, Yana; Pu, Hongquan; Cheng, Ning; Li, Haiyan; He, Jie

    2016-03-01

    Cancer control is a long-term work. Cancer research and intervention really need the support of cohort study. In the recent years, more and more cohort studies on cancer control were conducted in China along with the increased ability of scientific research in China. Since 2010, Cancer Hospital, Chinese Academy of Medical Sciences, collaborated with Lanzhou University and the Worker' s Hospital of Jinchuan Group Company Limited, have carried out a large-scale cohort study on cancer, which covered a population of more than 50 000 called " Jinchang cohort". Since 2012, a National Key Public Health Project, "cancer screening in urban China" , has been conducted in Jinchang, which strengthened the Jinchang cohort study. Based on the Jinchang cohort study, historical cohort study, cross-sectional study and prospective cohort study have been conducted, which would provide a lot of evidence for the cancer control in China.

  7. Cohort profile: the lidA Cohort Study-a German Cohort Study on Work, Age, Health and Work Participation.

    Science.gov (United States)

    Hasselhorn, Hans Martin; Peter, Richard; Rauch, Angela; Schröder, Helmut; Swart, Enno; Bender, Stefan; du Prel, Jean-Baptist; Ebener, Melanie; March, Stefanie; Trappmann, Mark; Steinwede, Jacob; Müller, Bernd Hans

    2014-12-01

    The lidA Cohort Study (German Cohort Study on Work, Age, Health and Work Participation) was set up to investigate and follow the effects of work and work context on the physical and psychological health of the ageing workforce in Germany and subsequently on work participation. Cohort participants are initially employed people subject to social security contributions and born in either 1959 (n = 2909) or 1965 (n = 3676). They were personally interviewed in their homes in 2011 and will be visited every 3 years. Data collection comprises socio-demographic data, work and private exposures, work ability, work and work participation attitudes, health, health-related behaviour, personality and attitudinal indicators. Employment biographies are assessed using register data. Subjective health reports and physical strength measures are complemented by health insurance claims data, where permission was given. A conceptual framework has been developed for the lidA Cohort Study within which three confirmatory sub-models assess the interdependencies of work and health considering age, gender and socioeconomic status. The first set of the data will be available to the scientific community by 2015. Access will be given by the Research Data Centre of the German Federal Employment Agency at the Institute for Employment Research (http://fdz.iab.de/en.aspx). © The Author 2014. Published by Oxford University Press on behalf of the International Epidemiological Association.

  8. Operative Complications During Pregnancy After Gastric Bypass—a Register-Based Cohort Study

    DEFF Research Database (Denmark)

    Andreasen, Lisbeth A; Nilas, Lisbeth; Kjær, Mette M

    2014-01-01

    the puerperium. CONCLUSIONS: The incidence of internal herniation during pregnancy was 1 % in our study. Internal herniation may be a serious complication in pregnant women, and both the diagnosis and treatment requires handling by experienced obstetrical, radiological, and surgical staff....... during pregnancy in a national cohort of women with a history of gastric bypass surgery. METHODS: A national, register-based cohort study of all Danish women with a history of gastric bypass surgery who had given birth from 2004 to 2010 was conducted. Surgical codes registered during pregnancy and until...... 120 days postpartum were identified in national registers, and the individual charts were reviewed in relevant cases. RESULTS: Of 286 women giving birth, fourteen women underwent procedures that might be related to the earlier gastric bypass surgery. Three women were operated on suspicion of internal...

  9. The Danish National Cohort Study (DANCOS)

    DEFF Research Database (Denmark)

    Helweg-Larsen, Karin; Kjøller, Mette; Davidsen, Michael

    2003-01-01

    This article gives an overview of a nationally representive public health research database in Denmark, the Danish National Cohort Study (DANCOS). DANCOS combines baseline data from health interview surveys with both pre- and post-baseline data from national health registries with date from a re...... and administrative registries. All respondents and non-respondents were followed through 2002, a total of 3,796 had died and 249 had emigrated. The specific cause of death for 2,485 people was recorded in the Danish Register of Causes of Death, updated through 1998. For 1978-1977, the Danish National Hospital...

  10. Cohort study of atypical pressure ulcers development.

    Science.gov (United States)

    Jaul, Efraim

    2014-12-01

    Atypical pressure ulcers (APU) are distinguished from common pressure ulcers (PU) with both unusual location and different aetiology. The occurrence and attempts to characterise APU remain unrecognised. The purpose of this cohort study was to analyse the occurrence of atypical location and the circumstances of the causation, and draw attention to the prevention and treatment by a multidisciplinary team. The cohort study spanned three and a half years totalling 174 patients. The unit incorporates two weekly combined staff meetings. One concentrates on wound assessment with treatment decisions made by the physician and nurse, and the other, a multidisciplinary team reviewing all patients and coordinating treatment. The main finding of this study identified APU occurrence rate of 21% within acquired PU over a three and a half year period. Severe spasticity constituted the largest group in this study and the most difficult to cure wounds, located in medial aspects of knees, elbows and palms. Medical devices caused the second largest occurrence of atypical wounds, located in the nape of the neck, penis and nostrils. Bony deformities were the third recognisable atypical wound group located in shoulder blades and upper spine. These three categories are definable and time observable. APU are important to be recognisable, and can be healed as well as being prevented. The prominent role of the multidisciplinary team is primary in identification, prevention and treatment. © 2013 The Authors. International Wound Journal © 2013 Medicalhelplines.com Inc and John Wiley & Sons Ltd.

  11. The influence of iron status and genetic polymorphisms in the HFE gene on the risk for postoperative complications after bariatric surgery: a prospective cohort study in 1,064 patients

    Directory of Open Access Journals (Sweden)

    Freedman-Weiss Mollie

    2011-01-01

    Full Text Available Abstract Background Gastric bypass surgery is a highly effective therapy for long-term weight loss in severely obese patients, but carries significant perioperative risks including infection, wound dehiscence, and leaks from staple breakdown. Iron status can affect immune function and wound healing, thus may influence peri-operative complications. Common mutations in the HFE gene, the gene responsible for the iron overload disorder hereditary hemochromatosis, may impact iron status. Methods We analyzed 1064 extremely obese Caucasian individuals who underwent open and laparoscopic Roux-n-Y gastric bypass surgery at the Geisinger Clinic. Serum iron, ferritin, transferrin, and iron binding capacity were measured pre-operatively. All patients had intra-operative liver biopsies and were genotyped for the C282Y and H63D mutations in the HFE gene. Associations between surgical complications and serum iron measures, HFE gene status, and liver iron histology were determined. Results We found that increased serum iron and transferrin saturation were present in patients with any post-operative complication, and that increased serum ferritin was also increased in patients with major complications. Increased serum transferrin saturation was also associated with wound complications in open RYGB, and transferrin saturation and ferritin with prolonged lengths of stay. The presence of 2 or more HFE mutations was associated with overall complications as well as wound complications in open RYGB. No differences were found in complication rates between those with stainable liver iron and those without. Conclusion Serum iron status and HFE genotype may be associated with complications following RYGB surgery in the extremely obese.

  12. Subclinical Hyperthyroidism-A Cohort Study

    International Nuclear Information System (INIS)

    Hashim, R.; Anwer, M. S.; Khan, F. A.; Ijaz, A.

    2013-01-01

    Objective: To compare the development of overt hyperthyroidism in a cohort of patients of subclinical hyperthyroidism (SCR) and in subjects with normal thyroid function tests. Study Design: A cohort study. Place and Duration of study: The study was conducted in the department of Chemical Pathology and Endocrinology, Armed Forces Institute of Pathology, Rawalpindi from Sept 2006 to Sept 2007. Patients and Methods: Fifty patients of SCR and almost equal number of age and sex-matched subjects with normal Thyroid function test (TFT) were included in the study as controls. Subclinical hyperthyroid patients and controls were followed for a period of one year on a six monthly basis. The patients were examined for signs and symptoms of hyperthyroidism and serum TSH, total T3 and free T4 were estimated. The clinical history, physical examination and TFT results were recorded. Five ml of blood was collected for serum thyroid profile in plain tube. Hormonal analysis(TSH, T4 and T3) was done for the patients and the controls enrolled in the study. The TFTs was analyzed using Chemiluminescence Immunoassay technique on Immulite 2000 an automated, random access, immunoassay analyzer. Results: Six (12%) out of 50 cases of the SCR patients and 2 (4%) out of 50 controls developed overt hyperthyroidism. SCR had no significant risk for conversion to overt hyperthyroidism as compared to healthy controls in this study. In addition to initial levels of serum TSH were one of important predictor for conversion of SCR to overt hyperthyroidism. Conclusion: Patients with SCR have no significant risk but showed an increase in frequency of conversion to overt hyperthyroidism (12% in this study) as compared to controls. (author)

  13. Cohort Profile : LifeLines, a three-generation cohort study and biobank

    NARCIS (Netherlands)

    Scholtens, Salome; Smidt, Nynke; Swertz, Morris A.; Bakker, Stephan J. L.; Dotinga, Aafje; Vonk, Judith M.; van Dijk, Freerk; van Zon, Sander K. R.; Wijmenga, Cisca; Wolffenbuttel, Bruce H. R.; Stolk, Ronald P.

    The LifeLines Cohort Study is a large population-based cohort study and biobank that was established as a resource for research on complex interactions between environmental, phenotypic and genomic factors in the development of chronic diseases and healthy ageing. Between 2006 and 2013, inhabitants

  14. Adolescent girls' views on cosmetic surgery: A focus group study.

    Science.gov (United States)

    Ashikali, Eleni-Marina; Dittmar, Helga; Ayers, Susan

    2016-01-01

    This study examined adolescent girls' views of cosmetic surgery. Seven focus groups were run with girls aged 15-18 years (N = 27). Participants read case studies of women having cosmetic surgery, followed by discussion and exploration of their views. Thematic analysis identified four themes: (1) dissatisfaction with appearance, (2) acceptability of cosmetic surgery, (3) feelings about undergoing cosmetic surgery and (4) cosmetic surgery in the media. Results suggest the acceptability of cosmetic surgery varies according to the reasons for having it and that the media play an important role by normalising surgery and under-representing the risks associated with it. © The Author(s) 2014.

  15. A Time Study of Plastic Surgery Residents.

    Science.gov (United States)

    Lau, Frank H; Sinha, Indranil; Jiang, Wei; Lipsitz, Stuart R; Eriksson, Elof

    2016-05-01

    Resident work hours are under scrutiny and have been subject to multiple restrictions. The studies supporting these changes have not included data on surgical residents. We studied the workday of a team of plastic surgery residents to establish prospective time-study data of plastic surgery (PRS) residents at a single tertiary-care academic medical center. Five trained research assistants observed all residents (n = 8) on a PRS service for 10 weeks and produced minute-by-minute activity logs. Data collection began when the team first met in the morning and continued until the resident being followed completed all non-call activities. We analyzed our data from 3 perspectives: 1) time spent in direct patient care (DPC), indirect patient care, and didactic activities; 2) time spent in high education-value activities (HEAs) versus low education-value activities; and 3) resident efficiency. We defined HEAs as activities that surgeons must master; other activities were LEAs. We quantified resident efficiency in terms of time fragmentation and time spent waiting. A total of 642.4 hours of data across 50 workdays were collected. Excluding call, residents worked an average of 64.2 hours per week. Approximately 50.7% of surgical resident time was allotted to DPC, with surgery accounting for the largest segment of this time (34.8%). Time spent on HEAs demonstrated trended upward with higher resident level (P = 0.086). Time in spent in surgery was significantly associated with higher resident levels (P time study of PRS residents, we found that compared with medicine trainees, surgical residents spent 3.23 times more time on DPC. High education-value activities comprised most of our residents' workdays. Surgery was the leading component of both DPC and HEAs. Our residents were highly efficient and fragmented, with the majority of all activities requiring 4 minutes or less. Residents spent a large portion of their time waiting for other services. In light of these data, we

  16. Telemedicine and Plastic Surgery: A Pilot Study

    Directory of Open Access Journals (Sweden)

    Denis Souto Valente

    2015-01-01

    Full Text Available Background. Telemedicine can be defined as the use of electronic media for transmission of information and medical data from one site to another. The objective of this study is to demonstrate an experience of telemedicine in plastic surgery. Methods. 32 plastic surgeons received a link with password for real-time streaming of a surgery. At the end of the procedure, the surgeons attending the procedure by the Internet answered five questions. The results were analyzed with descriptive statistics. Results. 27 plastic surgeons attended the online procedure in real-time. 96.3% considered the access to the website as good or excellent and 3.7% considered it bad. 14.8% reported that the transmission was bad and 85.2% considered the quality of transmission as good or excellent. 96.3% classified the live broadcasting as a good or excellent learning experience and 3.7% considered it a bad experience. 92.6% reported feeling able to perform this surgery after watching the demo and 7.4% did not feel able. 100% of participants said they would like to participate in other surgical demonstrations over the Internet. Conclusion. We conclude that the use of telemedicine can provide more access to education and medical research, for plastic surgeons looking for medical education from distant regions.

  17. Odontogenic sinus tracts: a cohort study.

    Science.gov (United States)

    Slutzky-Goldberg, Iris; Tsesis, Igor; Slutzky, Hagay; Heling, Ilana

    2009-01-01

    To determine the prevalence,location, and distribution of sinus tracts in patients referred for endodontic consultation. This cohort study included 1,119 subjects referred for endodontic consultation, 108 of whom presented with sinus tracts. Following clinical and radiographic examination, the diameter of the rarifying osteitis lesion on the radiograph was measured and the path and origin of the sinus tracts determined. Signs and symptoms, tooth site,buccal/lingual location, and diameter were recorded. Data were statistically analyzed using Pearson chi-square test. Sinus tracts originated mainly from maxillary teeth (63.1%); only 38.9% originated from mandibular teeth. Chronic periapical abscess was the most prevalent diagnosed origin (71.0%). Broken restorations were highly associated with the presence of sinus tracts (53.0%). The most frequent site of orifices was buccal(82.4%), followed by lingual or palatal (12.0%). Orifices on the lingual aspect of the gingiva were observed in mandibularmolars. There was an 86.8% correlation between the occurrence of an apically located sinus tract and apical rarifying osteitis(P<.01). Sinus tract in the lingual or palatal aspect of the gingiva is relatively common. Practitioners should look for signs of sinus tract during routine examination

  18. Retrospective Cohort Study of Hydrotherapy in Labor.

    Science.gov (United States)

    Vanderlaan, Jennifer

    To describe the use of hydrotherapy for pain management in labor. This was a retrospective cohort study. Hospital labor and delivery unit in the Northwestern United States, 2006 through 2013. Women in a nurse-midwifery-managed practice who were eligible to use hydrotherapy during labor. Descriptive statistics were used to report the proportion of participants who initiated and discontinued hydrotherapy and duration of hydrotherapy use. Logistic regression was used to provide adjusted odds ratios for characteristics associated with hydrotherapy use. Of the 327 participants included, 268 (82%) initiated hydrotherapy. Of those, 80 (29.9%) were removed from the water because they met medical exclusion criteria, and 24 (9%) progressed to pharmacologic pain management. The mean duration of tub use was 156.3 minutes (standard deviation = 122.7). Induction of labor was associated with declining the offer of hydrotherapy, and nulliparity was associated with medical removal from hydrotherapy. In a hospital that promoted hydrotherapy for pain management in labor, most women who were eligible initiated hydrotherapy. Hospital staff can estimate demand for hydrotherapy by being aware that hydrotherapy use is associated with nulliparity. Copyright © 2017 AWHONN, the Association of Women’s Health, Obstetric and Neonatal Nurses. Published by Elsevier Inc. All rights reserved.

  19. The difference in blood pressure readings between arms and survival: primary care cohort study

    OpenAIRE

    Clark, Christopher E; Taylor, Rod S; Shore, Angela C; Campbell, John L

    2012-01-01

    Objective To determine whether a difference in systolic blood pressure readings between arms can predict a reduced event free survival after 10 years. Design Cohort study. Setting Rural general practice in Devon, United Kingdom. Participants 230 people receiving treatment for hypertension in primary care. Intervention Bilateral blood pressure measurements recorded at three successive surgery attendances. Main outcome measures Cardiovascular events and deaths from all causes during a median fo...

  20. Complex regional pain syndrome 1 – the Swiss cohort study

    Directory of Open Access Journals (Sweden)

    Perez Roberto SGM

    2008-06-01

    Full Text Available Abstract Background Little is known about the course of Complex Regional Pain Syndrome 1 and potential factors influencing the course of this disorder over time. The goal of this study is a to set up a database with patients suffering from suspected CRPS 1 in an initial stadium, b to perform investigations on epidemiology, diagnosis, prognosis, and socioeconomics within the database and c to develop a prognostic risk assessment tool for patients with CRPS 1 taking into account symptomatology and specific therapies. Methods/design Prospective cohort study. Patients suffering from a painful swelling of the hand or foot which appeared within 8 weeks after a trauma or a surgery and which cannot be explained by conditions that would otherwise account for the degree of pain and dysfunction will be included. In accordance with the recommendations of International Classification of Functioning, Disability and Health (ICF model, standardised and validated questionnaires will be used. Patients will be monitored over a period of 2 years at 6 scheduled visits (0 and 6 weeks, 3, 6, 12, and 24 months. Each visit involves a physical examination, registration of therapeutic interventions, and completion of the various study questionnaires. Outcomes involve changes in health status, quality of life and costs/utility. Discussion This paper describes the rationale and design of patients with CRPS 1. Ideally, potential risk factors may be identified at an early stage in order to initiate an early and adequate treatment in patients with increased risk for delayed recovery. Trial registration Not applicable

  1. Global teaching and training initiatives for emerging cohort studies

    Directory of Open Access Journals (Sweden)

    Jessica K. Paulus

    2012-09-01

    Full Text Available A striking disparity exists across the globe, with essentially no large-scale longitudinal studies ongoing in regions that will be significantly affected by the oncoming non-communicable disease epidemic. The successful implementation of cohort studies in most low-resource research environments presents unique challenges that may be aided by coordinated training programs. Leaders of emerging cohort studies attending the First World Cohort Integration Workshop were surveyed about training priorities, unmet needs and potential cross-cohort solutions to these barriers through an electronic pre-workshop questionnaire and focus groups. Cohort studies representing India, Mexico, Nigeria, South Africa, Sweden, Tanzania and Uganda described similar training needs, including on-the-job training, data analysis software instruction, and database and bio-bank management. A lack of funding and protected time for training activities were commonly identified constraints. Proposed solutions include a collaborative cross-cohort teaching platform with web-based content and interactive teaching methods for a range of research personnel. An international network for research mentorship and idea exchange, and modifying the graduate thesis structure were also identified as key initiatives. Cross-cohort integrated educational initiatives will efficiently meet shared needs, catalyze the development of emerging cohorts, speed closure of the global disparity in cohort research, and may fortify scientific capacity development in low-resource settings.

  2. Weight at birth and subsequent fecundability: a prospective cohort study

    DEFF Research Database (Denmark)

    Nielsen, Cathrine Wildenschild; Hammerich Riis, Anders; Ehrenstein, Vera

    2014-01-01

    OBJECTIVE: To examine the association between a woman's birth weight and her subsequent fecundability. METHOD: In this prospective cohort study, we included 2,773 Danish pregnancy planners enrolled in the internet-based cohort study "Snart-Gravid", conducted during 2007-2012. Participants were 18...

  3. Incidence and risk factors for surgically acquired pressure ulcers: a prospective cohort study investigators.

    Science.gov (United States)

    Webster, Joan; Lister, Carolyn; Corry, Jean; Holland, Michelle; Coleman, Kerrie; Marquart, Louise

    2015-01-01

    To assess the incidence of hospital-acquired, surgery-related pressure injury (ulcers) and identify risk factors for these injuries. We used a prospective cohort study to investigate the research question. The study was conducted at a major metropolitan hospital in Brisbane, Australia. Five hundred thirty-four adult patients booked for any surgical procedure expected to last more than 30 minutes were eligible for inclusion. Patients who provided informed consent for study participation were assessed for pressure ulcers, using the European Pressure Ulcer Advisory Panel and National Pressure Ulcer Advisory Panel Guidelines, before entering the operating room and again in the post-anesthetic care unit (PACU). Research nurses and all PACU nurses were trained in skin assessment and in pressure ulcer staging. Patients were not assessed again after their discharge from the PACU. Seven patients (1.3%) had existing pressure injuries (ulcers) and a further 6 (1.3%) developed a surgery-related pressure ulcer. Risk factors associated with surgery-related pressure injuries were similar to non-surgically related risks and included older age, skin condition, and being admitted from a location other than one's own home. Length of surgery was not associated with pressure ulcer development in this cohort. Perioperative nurses play an important role in identifying existing or new pressure injuries. However, many of these nurses are unfamiliar with pressure ulcer classification, so education in this area is essential. Although the incidence of surgically acquired pressure ulcers was low in this cohort, careful skin inspection before and after surgery provides an opportunity for early treatment and may prevent existing lesions progressing to higher stages.

  4. Thiazolidinediones and Parkinson Disease: A Cohort Study.

    Science.gov (United States)

    Connolly, John G; Bykov, Katsiaryna; Gagne, Joshua J

    2015-12-01

    Thiazolidinediones, a class of medications indicated for the treatment of type 2 diabetes mellitus, reduce inflammation and have been shown to provide a therapeutic benefit in animal models of Parkinson disease. We examined the association between treatment with thiazolidinediones and the onset of Parkinson disease in older individuals. We performed a cohort study of 29,397 Medicare patients enrolled in state pharmaceutical benefits programs who initiated treatment with thiazolidinediones or sulfonylureas during the years 1997 through 2005 and had no prior diagnosis of Parkinson disease. New users of thiazolidinediones were propensity score matched to new users of sulfonylureas and followed to determine whether they were diagnosed with Parkinson disease. We used Cox proportional hazards models to compare time to diagnosis of Parkinson disease in the propensity score-matched populations. To assess the association with duration of use, we performed several analyses that required longer continuous use of medications. In the primary analysis, thiazolidinedione users had a hazard ratio for a diagnosis of Parkinson disease of 1.09 (95% confidence interval: 0.71, 1.66) when compared with sulfonylurea users. Increasing the duration-of-use requirements to 10 months did not substantially change the association; the hazard ratios ranged from 1.00 (95% confidence interval: 0.49, 2.05) to 1.17 (95% confidence interval: 0.60, 2.25). Thiazolidinedione use was not associated with a longer time to diagnosis of Parkinson disease than was sulfonylurea use, regardless of duration of exposure. © The Author 2015. Published by Oxford University Press on behalf of the Johns Hopkins Bloomberg School of Public Health. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  5. Imaging studies for failed back surgery syndrome

    International Nuclear Information System (INIS)

    Cosnard, G.; Cordoliani, Y.S.; Sarrazin, J.L.; Soulie, D.

    1995-01-01

    In patients with failed back surgery syndrome, magnetic resonance imaging (MRI) can be the best first-line imaging study because it simplifies the diagnosis. This update is based on over 600 cases. MRI shows the scar tissue at the surgical site, persistent evidence of disk herniation for several weeks after surgery, and evidence of local and regional edema in one-fourth of cases. The edema is most marked between two months and two years after the operation and can misleadingly suggest discitis. MRI is the best investigation for detecting recurrent herniation at the same vertebral level or another level. Herniated disk material is seen as a mass that does not enhance after gadolinium, in contrast to the vascularized scar tissue. Free fragments are often clearly visible within the scar tissue. Fragments that migrate to the epidural space can give rise to granulomatous reactions. Scar tissue can be seen in the epidural space and within the disk; it can show enhancement after gadolinium for several years. The scar can be atrophic or hypertrophic and can encase or impinge on the dural sac and nerve roots. Pathological fibrosis cannot be differentiated from ordinary scar tissue. Arachnoiditis causing adherence of the nerve roots to the dura mater or to each other occurs in 5 % to 10 % of cases. Nerve root enhancement after gadolinium is seen in three-fourths of cases. Bone lesions are common, especially some time after surgery; they are usually accompanied with other lesions. Hematomas are seen in less than 10 % of cases. Infections are similarly rare (0.25 % each for discitis and epiduritis). The diagnosis of discitis is difficult and requires percutaneous biopsy of the disk, especially when MRI shows fluid within the disk, with decreased signal intensity on T2 images, and non enhancement after intravenous gadolinium. (authors). 19 refs., 7 figs

  6. Cohort Profile: The JS High School study (JSHS): a cohort study of Korean adolescents.

    Science.gov (United States)

    Choi, Dong Phil; Lee, Joo Young; Kim, Hyeon Chang

    2017-04-01

    Major aetiologies of atherosclerotic cardiovascular diseases begin in childhood and atherosclerotic vascular abnormalities can be observed among children and adolescents. Adolescent cohort studies have important advantages because they can observe earlier changes in vascular structure and function. The purpose of the JS High School study (JSHS) is to identify biomarkers predicting or indicating early structural and functional vascular change in adolescents. The JSHS is a prospective cohort study of a Korean adolescent population. The target population of the JSHS was first-graders (aged 14 to17 years) at a high school of South Korea. Enrolment and baseline examinations were conducted in years 2007, 2010, 2011 and 2012. Among the total eligible population of 1115 students, 1071 (96.1%) participated in the study and completed all baseline examinations. Informed consent forms were obtained from each participant and his/her parent or guardian. Baseline examinations include: questionnaires on demographics, health behaviours, medical history, and depression symptoms; fasting blood analysis; anthropometric measurement; body impedance analysis; blood pressure measurement; radial artery tonometry; bone densitometry; pulmonary function tests; and carotid ultrasonography. Participants enrolled from 2007 through 2012 were re-examined after 30 months of follow-up, and those who enrolled in 2012 were re-examined after 24 months of follow-up. The corresponding author may be contacted for potential collaboration and data access. © The Author 2015; all rights reserved. Published by Oxford University Press on behalf of the International Epidemiological Association.

  7. Hemoglobin and hematocrit levels in the prediction of complicated Crohn's disease behavior--a cohort study.

    Science.gov (United States)

    Rieder, Florian; Paul, Gisela; Schnoy, Elisabeth; Schleder, Stephan; Wolf, Alexandra; Kamm, Florian; Dirmeier, Andrea; Strauch, Ulrike; Obermeier, Florian; Lopez, Rocio; Achkar, Jean-Paul; Rogler, Gerhard; Klebl, Frank

    2014-01-01

    Markers that predict the occurrence of a complicated disease behavior in patients with Crohn's disease (CD) can permit a more aggressive therapeutic regimen for patients at risk. The aim of this cohort study was to test the blood levels of hemoglobin (Hgb) and hematocrit (Hct) for the prediction of complicated CD behavior and CD related surgery in an adult patient population. Blood samples of 62 CD patients of the German Inflammatory Bowel Disease-network "Kompetenznetz CED" were tested for the levels of Hgb and Hct prior to the occurrence of complicated disease behavior or CD related surgery. The relation of these markers and clinical events was studied using Kaplan-Meier survival analysis and adjusted COX-proportional hazard regression models. The median follow-up time was 55.8 months. Of the 62 CD patients without any previous complication or surgery 34% developed a complication and/or underwent CD related surgery. Low Hgb or Hct levels were independent predictors of a shorter time to occurrence of the first complication or CD related surgery. This was true for early as well as late occurring complications. Stable low Hgb or Hct during serial follow-up measurements had a higher frequency of complications compared to patients with a stable normal Hgb or Hct, respectively. Determination of Hgb or Hct in complication and surgery naïve CD patients might serve as an additional tool for the prediction of complicated disease behavior.

  8. 90-day Readmission After Lumbar Spinal Fusion Surgery in New York State Between 2005 and 2014: A 10-year Analysis of a Statewide Cohort.

    Science.gov (United States)

    Baaj, Ali A; Lang, Gernot; Hsu, Wei-Chun; Avila, Mauricio J; Mao, Jialin; Sedrakyan, Art

    2017-11-15

    MINI: We assessed 90-day readmission and evaluated risk factors associated with readmission after lumbar spinal fusion surgery in New York State. The overall 90-day readmission rate was 24.8%. Age, sex, race, insurance, procedure, number of operated spinal levels, health service area, and comorbidities are major risk factors for 90-day readmission. Retrospective cohort study. The aim of this study was to assess 90-day readmission and evaluate risk factors associated with readmission after lumbar fusion in New York State. Readmission is becoming an important metric for quality and efficiency of health care. Readmission and its predictors following spine surgery are overall poorly understood and limited evidence is available specifically in lumbar fusion. The New York Statewide Planning and Research Cooperative System (SPARCS) was utilized to capture patients undergoing lumbar fusion from 2005 to 2014. Temporal trend of 90-day readmission was assessed using Cochran-Armitage test. Logistic regression was used to examine predictors associated with 90-day readmission. There were 86,869 patients included in this cohort study. The overall 90-day readmission rate was 24.8%. On a multivariable analysis model, age (odds ratio [OR] comparing ≥75 versus New York-Pennsylvania border: 0.67, 95% CI: 0.61-0.73), and comorbidity, i.e., coronary artery disease (OR: 1.26, 95% CI: 1.19-1.33) were significantly associated with 90-day readmission. Directions of the odds ratios for these factors were consistent after stratification by procedure type. Age, sex, race, insurance, procedure, number of operated spinal levels, HSA, and comorbidities are major risk factors for 90-day readmission. Our study allows risk calculation to determine high-risk patients before undergoing spinal fusion surgery to prevent early readmission, improve quality of care, and reduce health care expenditures. 3.

  9. Is day surgery safe?

    DEFF Research Database (Denmark)

    Majholm, Birgitte; Engbæk, J; Bartholdy, Jens

    2012-01-01

    Day surgery is expanding in several countries, and it is important to collect information about quality. The aim of this study was to assess morbidity and unanticipated hospital visits 0-30 days post-operatively in a large cohort.......Day surgery is expanding in several countries, and it is important to collect information about quality. The aim of this study was to assess morbidity and unanticipated hospital visits 0-30 days post-operatively in a large cohort....

  10. Cohort profile: the Spanish WORKing life Social Security (WORKss) cohort study.

    Science.gov (United States)

    López Gómez, María Andrée; Durán, Xavier; Zaballa, Elena; Sanchez-Niubo, Albert; Delclos, George L; Benavides, Fernando G

    2016-03-07

    The global economy is changing the labour market and social protection systems in Europe. The effect of both changes on health needs to be monitored in view of an ageing population and the resulting increase in prevalence of chronic health conditions. The Spanish WORKing life Social Security (WORKss) cohort study provides unique longitudinal data to study the impact of labour trajectories and employment conditions on health, in terms of sickness absence, permanent disability and death. The WORKss cohort originated from the Continuous Working Life Sample (CWLS) generated by the General Directorate for the Organization of the Social Security in Spain. The CWLS contains a 4% representative sample of all individuals in contact with the Social Security system. The WORKss cohort exclusively includes individuals with a labour trajectory from 1981 or later. In 2004, the cohort was initiated with 1,022 ,79 Social Security members: 840,770 (82.2%) contributors and 182,009 (17.8%) beneficiaries aged 16 and older. The WORKss cohort includes demographic characteristics, chronological data about employment history, retirement, permanent disability and death. These data make possible the measurement of incidence of permanent disability, the number of potential years of working life lost, and the number of contracts and inactive periods with the Social Security system. The WORKss cohort was linked to temporary sickness absence registries to study medical diagnoses that lead to permanent disability and consequently to an earlier exit from the labour market in unhealthy conditions. Thanks to its administrative source, the WORKss cohort study will continue follow-up in the coming years, keeping the representativeness of the Spanish population affiliated to the Social Security system. The linkage between the WORKss cohort and temporary sickness absence registries is envisioned to continue. Future plans include the linkage of the cohort with mortality registries. Published by the BMJ

  11. Quality of life before and after TVT, a prospective multicentre cohort study, results from the Netherlands TVT database

    NARCIS (Netherlands)

    Koops, SES; Bisseling, TM; Heintz, APM; Vervest, HAM

    Objective To asses the long term outcome of tension-free vaginal tape procedure in women with isolated stress urinary incontinence (SUI). Design Prospective cohort study. Setting Twenty-eight teaching hospitals and 13 local hospitals, with 54 gynaecologists and urologists performing the surgery.

  12. Ambulatory Medical Follow-Up in the Year After Surgery and Subsequent Survival in a National Cohort of Veterans Health Administration Surgical Patients.

    Science.gov (United States)

    Schonberger, Robert B; Dai, Feng; Brandt, Cynthia; Burg, Matthew M

    2016-06-01

    Among a national cohort of surgical patients, the authors analyzed the association between medical follow-up during the first postsurgical year and survival during the second postsurgical year. Retrospective cohort study. US Veterans Hospitals. The study included adults who received surgical care in any Veterans Health Administration facility from 2006 to 2011 who were discharged within 10 days of surgery and who survived for at least 1 year postoperatively. None. The association between the receipt of nonsurgical ambulatory medical care during the first postoperative year and the hazard of death during postsurgical year 2 was measured. Among 236,200 veterans, 93.2% received a nonsurgical medical follow-up visit in postsurgical year 1; of those, 5.1% died during postsurgical year 2. This compares with 9.4% year-2 mortality among patients lacking year-1 medical follow-up (p<0.0001). After adjustment for confounders, medical follow-up in postoperative year 1 again was associated with a significantly lower hazard of death in postoperative year 2 (hazard ratio 0.71; 95% confidence interval 0.66-0.78). Sensitivity analyses examining patient subgroups stratified by procedural specialty demonstrated comparable findings. The results were robust under a variety of simulated scenarios of unmeasured confounding. Within a national cohort of US veterans who presented for surgery, those who received nonsurgical ambulatory follow-up during the first postoperative year demonstrated lower all-cause mortality in the subsequent postoperative year than those who did not receive the same type of follow-up care. Interventions focused on postoperative care coordination of outpatient medical follow-up may have the potential to improve long-term postoperative survival. Copyright © 2016. Published by Elsevier Inc.

  13. The Impact of Anesthesia-Influenced Process Measure Compliance on Length of Stay: Results From an Enhanced Recovery After Surgery for Colorectal Surgery Cohort.

    Science.gov (United States)

    Grant, Michael C; Pio Roda, Claro M; Canner, Joseph K; Sommer, Philip; Galante, Daniel; Hobson, Deborah; Gearhart, Susan; Wu, Christopher L; Wick, Elizabeth

    2018-05-17

    Process measure compliance has been associated with improved outcomes in enhanced recovery after surgery (ERAS) programs. Herein, we sought to assess the impact of compliance with measures directly influenced by anesthesiology in an ERAS for colorectal surgery cohort. From January 2013 to April 2015, data from 1140 consecutive patients were collected for all patients before (pre-ERAS) and after (ERAS) implementation of an ERAS program. Compliance with 9 specific process measures directly influenced by the anesthesiologist or acute pain service was analyzed to determine the impact on hospital length of stay (LOS). Process measure compliance was associated with a stepwise reduction in LOS. Patients who received >4 process measures (high compliance) had a significantly shorter LOS (incident rate ratio [IRR], 0.77; 95% CI, 0.70-0.85); P process measures) counterparts. Multivariable regression suggests that utilization of multimodal nausea and vomiting prophylaxis (IRR, 0.78; 95% CI, 0.68-0.89; P process measures directly influenced by the anesthesiologists and in concert with a formal anesthesia protocol is associated with reduced LOS. Engaging anesthesiology colleagues throughout the surgical encounter increases the overall value of perioperative care.

  14. Risk of connective tissue disease and related disorders among women with breast implants: a nation-wide retrospective cohort study in Sweden.

    OpenAIRE

    Nyrén, O.; Yin, L.; Josefsson, S.; McLaughlin, J. K.; Blot, W. J.; Engqvist, M.; Hakelius, L.; Boice, J. D.; Adami, H. O.

    1998-01-01

    OBJECTIVE: To examine the relation between connective tissue disease and related conditions and breast implants. DESIGN: Retrospective cohort study of all women in the Swedish national inpatient registry who underwent breast augmentation surgery with artificial implants during 1964-93, compared with women who underwent breast reduction surgery during the same period. SETTING: Sweden. SUBJECTS: 7442 women with implants for cosmetic reasons or for reconstruction after breast cancer surgery and ...

  15. The Horsens-Aarhus Femoro Acetabular Impingement (HAFAI) cohort: outcome of arthroscopic treatment for femoroacetabular impingement. Protocol for a prospective cohort study.

    Science.gov (United States)

    Kierkegaard, Signe; Lund, Bent; Dalgas, Ulrik; Sørensen, Henrik; Søballe, Kjeld; Mechlenburg, Inger

    2015-09-07

    During the past decade, it has become increasingly more common to offer hip arthroscopic surgery when treating people with femoroacetabular impingement (FAI). Nevertheless, the latest reviews conclude that it still remains to be properly investigated how surgery affects the patients. Specifically, detailed information on the functional, muscular and mechanical impact of surgery in larger groups is lacking. Furthermore, the long-term outcome of the surgery is still to be investigated. In this prospective cohort study, a total of 60 patients with FAI scheduled for arthroscopic surgery will be followed and tested preoperatively, and again after 3, 6, 9 and 12 months. Assessment includes isokinetic dynamometry evaluating hip flexion and extension; evaluation of functional capacity in a three-dimensional motion laboratory; pain assessment; self-reported function, quality of life, expectation and satisfaction with the surgery; recording of previous and present sporting activities and accelerometry. In addition, data on surgical procedure, rehabilitation progress, adverse events and failure will be recorded. Patients will be compared with an age-matched and gender-matched reference group of 30 persons with no hip, knee, ankle or back problems. Long-term follow-up of this cohort may evaluate possible reoperations and development of hip osteoarthritis. Furthermore, analysis on how subgroups respond to the treatment could be performed together with identification of possible "non-responders". The study is approved by the Central Denmark Region Committee on Biomedical Research Ethics (Journal No 1-10-72-239-14). The results from this study will be presented at national and international congresses and published in peer-reviewed journals. NCT02306525. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  16. Public perceptions of cohort studies and biobanks in Germany.

    Science.gov (United States)

    Starkbaum, Johannes; Gottweis, Herbert; Gottweis, Ursula; Kleiser, Christina; Linseisen, Jakob; Meisinger, Christa; Kamtsiuris, Panagiotis; Moebus, Susanne; Jöckel, Karl-Heinz; Börm, Sonja; Wichmann, H-Erich

    2014-04-01

    Cohort studies and biobank projects have led to public discussions in several European countries in the past. In Germany, many medium-sized studies are currently running successfully in terms of respondent rates. However, EU-wide research on general public perceptions of biobanks and cohort studies have shown that Germany is among those countries where people express the highest reluctance for providing body material and other data for research purposes. Because of early efforts of the just-initiated German National Cohort Study, we are able to begin to investigate in greater detail how various groups of people across Germany reflect and discuss the ongoing implementation of cohort studies and biobanking in Germany. Our research is based on 15 focus group discussions in four German regions, as well as on Eurobarometer poll data on biobanking.

  17. Japanese Legacy Cohorts: The Life Span Study Atomic Bomb Survivor Cohort and Survivors’ Offspring

    Directory of Open Access Journals (Sweden)

    Kotaro Ozasa

    2018-04-01

    Full Text Available Cohorts of atomic bomb survivors—including those exposed in utero—and children conceived after parental exposure were established to investigate late health effects of atomic bomb radiation and its transgenerational effects by the Atomic Bomb Casualty Commission (ABCC in the 1950s. ABCC was reorganized to the Radiation Effects Research Foundation (RERF in 1975, and all work has been continued at RERF. The Life Span Study, the cohort of survivors, consists of about 120,000 subjects and has been followed since 1950. Cohorts of in utero survivors and the survivors’ children include about 3,600 and 77,000 subjects, respectively, and have been followed since 1945. Atomic bomb radiation dose was estimated for each subject based on location at the time of the bombing and shielding conditions from exposure, which were obtained through enormous efforts of investigators and cooperation of subjects. Outcomes include vital status, cause of death, and cancer incidence. In addition, sub-cohorts of these three cohorts were constructed to examine clinical features of late health effects, and the subjects have been invited to periodic health examinations at clinics of ABCC and RERF. They were also asked to donate biosamples for biomedical investigations. Epidemiological studies have observed increased radiation risks for malignant diseases among survivors, including those exposed in utero, and possible risks for some non-cancer diseases. In children of survivors, no increased risks due to parental exposure to radiation have been observed for malignancies or other diseases, but investigations are continuing, as these cohorts are still relatively young.

  18. Japanese Legacy Cohorts: The Life Span Study Atomic Bomb Survivor Cohort and Survivors' Offspring.

    Science.gov (United States)

    Ozasa, Kotaro; Grant, Eric J; Kodama, Kazunori

    2018-04-05

    Cohorts of atomic bomb survivors-including those exposed in utero-and children conceived after parental exposure were established to investigate late health effects of atomic bomb radiation and its transgenerational effects by the Atomic Bomb Casualty Commission (ABCC) in the 1950s. ABCC was reorganized to the Radiation Effects Research Foundation (RERF) in 1975, and all work has been continued at RERF. The Life Span Study, the cohort of survivors, consists of about 120,000 subjects and has been followed since 1950. Cohorts of in utero survivors and the survivors' children include about 3,600 and 77,000 subjects, respectively, and have been followed since 1945. Atomic bomb radiation dose was estimated for each subject based on location at the time of the bombing and shielding conditions from exposure, which were obtained through enormous efforts of investigators and cooperation of subjects. Outcomes include vital status, cause of death, and cancer incidence. In addition, sub-cohorts of these three cohorts were constructed to examine clinical features of late health effects, and the subjects have been invited to periodic health examinations at clinics of ABCC and RERF. They were also asked to donate biosamples for biomedical investigations. Epidemiological studies have observed increased radiation risks for malignant diseases among survivors, including those exposed in utero, and possible risks for some non-cancer diseases. In children of survivors, no increased risks due to parental exposure to radiation have been observed for malignancies or other diseases, but investigations are continuing, as these cohorts are still relatively young.

  19. Japanese Legacy Cohorts: The Life Span Study Atomic Bomb Survivor Cohort and Survivors’ Offspring

    Science.gov (United States)

    Grant, Eric J; Kodama, Kazunori

    2018-01-01

    Cohorts of atomic bomb survivors—including those exposed in utero—and children conceived after parental exposure were established to investigate late health effects of atomic bomb radiation and its transgenerational effects by the Atomic Bomb Casualty Commission (ABCC) in the 1950s. ABCC was reorganized to the Radiation Effects Research Foundation (RERF) in 1975, and all work has been continued at RERF. The Life Span Study, the cohort of survivors, consists of about 120,000 subjects and has been followed since 1950. Cohorts of in utero survivors and the survivors’ children include about 3,600 and 77,000 subjects, respectively, and have been followed since 1945. Atomic bomb radiation dose was estimated for each subject based on location at the time of the bombing and shielding conditions from exposure, which were obtained through enormous efforts of investigators and cooperation of subjects. Outcomes include vital status, cause of death, and cancer incidence. In addition, sub-cohorts of these three cohorts were constructed to examine clinical features of late health effects, and the subjects have been invited to periodic health examinations at clinics of ABCC and RERF. They were also asked to donate biosamples for biomedical investigations. Epidemiological studies have observed increased radiation risks for malignant diseases among survivors, including those exposed in utero, and possible risks for some non-cancer diseases. In children of survivors, no increased risks due to parental exposure to radiation have been observed for malignancies or other diseases, but investigations are continuing, as these cohorts are still relatively young. PMID:29553058

  20. Dietary Fat Intake and Fecundability in 2 Preconception Cohort Studies

    DEFF Research Database (Denmark)

    Wise, Lauren A; Wesselink, Amelia K; Tucker, Katherine L

    2018-01-01

    American preconception cohort studies. Women who were attempting to become pregnant completed a validated food frequency questionnaire at baseline. Pregnancy status was updated bimonthly for 12 months or until pregnancy. Fecundability ratios (FR) and 95% confidence intervals were estimated using...

  1. Cohort profile: LIFEWORK, a prospective cohort study on occupational and environmental risk factors and health in the Netherlands.

    NARCIS (Netherlands)

    Reedijk, M.; Lenters, V.; Slottje, P.; Pijpe, A.; Peeters, P.H.; Korevaar, J.C.; Bueno-de-Mesquita, B.; Verschuren, W.M.M.; Verheij, R.A.; Pieterson, I.; Leeuwen, F.E. van; Rookus, M.A.; Kromhout, H.; Vermeulen, R.C.H.

    2017-01-01

    Purpose LIFEWORK is a large federated prospective cohort established in the Netherlands to quantify the health effects of occupational and environmental exposures. This cohort is also the Dutch contribution to the international Cohort Study of Mobile Phone Use and Health (COSMOS). In this paper, we

  2. Management of advanced ovarian cancer in South West Wales - a comparison between primary debulking surgery and primary chemotherapy treatment strategies in an unselected, consecutive patient cohort.

    Science.gov (United States)

    Drews, F; Bertelli, G; Lutchman-Singh, K

    2017-08-01

    This study represents the first reported outcomes for patients with advanced ovarian cancer (AOC) in South-West Wales undergoing treatment with primary debulking surgery or primary chemotherapy respectively. This is a retrospective study of consecutive, unselected patients with advanced ovarian, fallopian tube or primary peritoneal cancer (FIGO III/IV) presenting to a regional cancer centre between October 2007 and October 2014. Patients were identified from Welsh Cancer Services records and relevant data was extracted from electronic National Health Service (NHS) databases. Main outcome measures were median overall survival (OS), progression free survival (PFS) and perioperative adverse events. Hazard ratio estimation was carried out with Cox Regression analysis and survival determined by Kaplan-Meier plots. Of 220 women with AOC, 32.3% underwent primary debulking surgery (PDS) and 67.7% primary chemotherapy and interval debulking (PCT-IDS). Patients were often elderly (median age 67 years) with a poor performance status (26.5% PS >1). Complete cytoreduction (0cm residual) was achieved in 32.4% of patients in the PDS group and in 50.0% of patients undergoing IDS. Median OS for all patients was 21.9 months (PDS: 27.0 and PCT-IDS: 19.2 months; p >0.05) and median PFS was 13.1 months (PDS: 14.3 months and PCT-IDS: 13.0 months; p >0.05). Median overall and progression free survival for patients achieving complete cytoreduction were 48.0 and 23.2 months respectively in the PDS group and 35.4 months and 18.6 months in the IDS group (p >0.05). This retrospective study of an unselected, consecutive cohort of women with AOC in South West Wales shows comparable survival outcomes with recently published trials, despite the relatively advanced age and poor performance status of our patient cohort. Over the seven-year study period, our data also demonstrated a non-significant trend towards improved survival following primary surgery in patients who achieved maximal

  3. ABSI (A Body Shape Index) and ARI (Anthropometric Risk Indicator) in Bariatric Surgery. First Application on a Bariatric Cohort and Possible Clinical Use.

    Science.gov (United States)

    Consalvo, Vincenzo; Krakauer, Jesse C; Krakauer, Nir Y; Canero, Antonio; Romano, Mafalda; Salsano, Vincenzo

    2018-01-29

    BMI (body mass index) is used to identify candidates for bariatric surgery, with a criterion of BMI ≥ 40. For lesser degrees of obesity, BMI 35-39.9, comorbidities are also considered. A Body Shape Index (ABSI) was derived to correct WC (waist circumference) for BMI and height. ABSI has been shown to be a linear predictor of long-term mortality across the range of BMI. Anthropometric risk indicator (ARI) combines the complementary contributions of BMI and ABSI and further improves mortality hazard prediction. We report for the first time ABSI and ARI for a bariatric surgical cohort at baseline and with 3-year follow-up. ABSI and BMI were calculated for 101 subjects from our bariatric surgery center database at baseline and after 3 years of follow-up. Raw values for BMI and ABSI were converted to Z scores and ARI values based on sex- and age-specific normals and risk associations from the National Health and Nutrition Examination Survey (NHANES) III sample of the US general population. Baseline scores for the anthropometric variables BMI and ABSI and the corresponding ARI were all higher than for the NHANES population sample. At 3-year post surgery, all three measures decreased significantly. While baseline BMI did not predict the change in mortality risk by ARI, baseline ABSI did (r = - 0.73), as did baseline ARI (r = - 0.94). Sleeve gastrectomy lowers ABSI and the associated mortality risk estimated from population studies after 3 years of follow-up. Considering our results, bariatric surgical candidates with BMI in the range of 35 to 39.9 with an increased ABSI-related mortality risk may have considerable survival benefit from bariatric surgery, even in the absence of qualifying comorbidities. 2814.

  4. Abdominal Cystic Echinococcosis Treated with Albendazole. A Pediatric Cohort Study.

    Directory of Open Access Journals (Sweden)

    Samanta Moroni

    Full Text Available Cystic echinococcosis is endemic in Argentina. The standard pharmacological treatment for the disease is albendazole, but surgery is a common alternative. Even though primary infection occurs mainly in the pediatric population, the optimal therapeutic option in pediatrics is not clearly defined and few pediatric cohorts with cystic echinococcosis treated with albendazole have been described to date.To describe therapeutic response to albendazole in a cohort of pediatric patients with abdominal cystic echinococcosis.Patients (0-18 years old with abdominal cystic echinococcosis who were treated with albendazole between January 1998 and August 2013. Diagnosis of abdominal cystic echinococcosis was made by ultrasound. All patients received albendazole, 10-15 mg/kg/day. Epidemiological data, symptoms, number, location and outcome of the cysts, serology and treatment received were analyzed. The parameter used to assess treatment response was cyst changes evaluated by ultrasound follow up using the WHO-IWGE classification.A total of 28 patients (with 46 abdominal cysts were included in the cohort. Mean age at enrolment was 9.4 years and mean duration of follow-up, 23.8 months. All patients resided in rural areas and had had contact with dogs. The asymptomatic form of the disease was the most common presentation. All patients received albendazole (mean duration: 142.5 days, with low incidence of adverse events. Albendazole had a positive effect on most of the cysts. Surgery was performed in 13 patients.Treatment with albendazole for uncomplicated cystic echinococcosis cysts is safe and effective, and can potentially reduce the need for surgical intervention.

  5. Abdominal Cystic Echinococcosis Treated with Albendazole. A Pediatric Cohort Study.

    Science.gov (United States)

    Moroni, Samanta; Moscatelli, Guillermo; Bournissen, Facundo García; González, Nicolás; Ballering, Griselda; Freilij, Héctor; Salgueiro, Fabián; Altcheh, Jaime

    2016-01-01

    Cystic echinococcosis is endemic in Argentina. The standard pharmacological treatment for the disease is albendazole, but surgery is a common alternative. Even though primary infection occurs mainly in the pediatric population, the optimal therapeutic option in pediatrics is not clearly defined and few pediatric cohorts with cystic echinococcosis treated with albendazole have been described to date. To describe therapeutic response to albendazole in a cohort of pediatric patients with abdominal cystic echinococcosis. Patients (0-18 years old) with abdominal cystic echinococcosis who were treated with albendazole between January 1998 and August 2013. Diagnosis of abdominal cystic echinococcosis was made by ultrasound. All patients received albendazole, 10-15 mg/kg/day. Epidemiological data, symptoms, number, location and outcome of the cysts, serology and treatment received were analyzed. The parameter used to assess treatment response was cyst changes evaluated by ultrasound follow up using the WHO-IWGE classification. A total of 28 patients (with 46 abdominal cysts) were included in the cohort. Mean age at enrolment was 9.4 years and mean duration of follow-up, 23.8 months. All patients resided in rural areas and had had contact with dogs. The asymptomatic form of the disease was the most common presentation. All patients received albendazole (mean duration: 142.5 days), with low incidence of adverse events. Albendazole had a positive effect on most of the cysts. Surgery was performed in 13 patients. Treatment with albendazole for uncomplicated cystic echinococcosis cysts is safe and effective, and can potentially reduce the need for surgical intervention.

  6. A cohort study of the recovery of health and wellbeing following colorectal cancer (CREW study: protocol paper

    Directory of Open Access Journals (Sweden)

    Fenlon Deborah

    2012-04-01

    Full Text Available Abstract Background The number of people surviving colorectal cancer has doubled in recent years. While much of the literature suggests that most people return to near pre-diagnosis status following surgery for colorectal cancer, this literature has largely focused on physical side effects. Longitudinal studies in colorectal cancer have either been small scale or taken a narrow focus on recovery after surgery. There is a need for a comprehensive, long-term study exploring all aspects of health and wellbeing in colorectal cancer patients. The aim of this study is to establish the natural history of health and wellbeing in people who have been treated for colorectal cancer. People have different dispositions, supports and resources, likely resulting in individual differences in restoration of health and wellbeing. The protocol described in this paper is of a study which will identify who is most at risk of problems, assess how quickly people return to a state of subjective health and wellbeing, and will measure factors which influence the course of recovery. Methods/design This is a prospective, longitudinal cohort study following 1000 people with colorectal cancer over a period of two years, recruiting from 30 NHS cancer treatment centres across the UK. Questionnaires will be administered prior to surgery, and 3, 9, 15 and 24 months after surgery, with the potential to return to this cohort to explore on-going issues related to recovery after cancer. Discussion Outcomes will help inform health care providers about what helps or hinders rapid and effective recovery from cancer, and identify areas for intervention development to aid this process. Once established the cohort can be followed up for longer periods and be approached to participate in related projects as appropriate and subject to funding.

  7. Cohort profile: the Spanish WORKing life Social Security (WORKss) cohort study

    OpenAIRE

    López Gómez, María Andreé, 1985-; Duran Jordà, Xavier, 1974-; Zaballa, Elena; Sánchez Niubò, Albert; Delclòs i Clanchet, Jordi, 1956-; Benavides, Fernando G. (Fernando García)

    2016-01-01

    PURPOSE: The global economy is changing the labour market and social protection systems in Europe. The effect of both changes on health needs to be monitored in view of an ageing population and the resulting increase in prevalence of chronic health conditions. The Spanish WORKing life Social Security (WORKss) cohort study provides unique longitudinal data to study the impact of labour trajectories and employment conditions on health, in terms of sickness absence, permanent disability and deat...

  8. The Korea Nurses' Health Study: A Prospective Cohort Study.

    Science.gov (United States)

    Kim, Oksoo; Ahn, Younjhin; Lee, Hea-Young; Jang, Hee Jung; Kim, Sue; Lee, Jung Eun; Jung, Heeja; Cho, Eunyoung; Lim, Joong-Yeon; Kim, Min-Ju; Willett, Walter C; Chavarro, Jorge E; Park, Hyun-Young

    2017-08-01

    The Korea Nurses' Health Study (KNHS) is a prospective cohort study of female nurses, focusing on the effects of occupational, environmental, and lifestyle risk factors on the health of Korean women. Female registered nurses aged 20-45 years and living in the Republic of Korea were invited to join the study, which began in July 2013. They were asked to complete a web-based baseline survey. The study protocols and questionnaires related to the KNHS are based on the Nurses' Health Study 3 (NHS3) in the United States, although they were modified to reflect the Korean lifestyle. Participants were asked about demographic, lifestyle factors, disease history, occupational exposure, reproductive factors, and dietary habits during their adolescence: Follow-up questionnaires were/will be completed at 6-8 month intervals after the baseline survey. If a participant became pregnant, she answered additional questionnaires containing pregnancy-related information. Among 157,569 eligible female nurses, 20,613 (13.1%) completed the web-based baseline questionnaire. The mean age of the participants was 29.4 ± 5.9 years, and more than half of them were in their 20s. Eighty-eight percent of the participants had worked night shifts as a nurse (mean, 5.3 ± 4.3 nights per month). Approximately 80% of the participants had a body mass index below 23 kg/m 2 . Gastrointestinal diseases were the most prevalent health issues (25.9%). The findings from this prospective cohort study will help to identify the effects of lifestyle-related and occupational factors on reproductive health and development of chronic diseases in Korean women.

  9. Short- and long-term outcomes of laparoscopic surgery vs open surgery for transverse colon cancer: a retrospective multicenter study.

    Science.gov (United States)

    Kim, Jong Wan; Kim, Jeong Yeon; Kang, Byung Mo; Lee, Bong Hwa; Kim, Byung Chun; Park, Jun Ho

    2016-01-01

    The purpose of the present study was to compare the perioperative and oncologic outcomes between laparoscopic surgery and open surgery for transverse colon cancer. We conducted a retrospective review of patients who underwent surgery for transverse colon cancer at six Hallym University-affiliated hospitals between January 2005 and June 2015. The perioperative outcomes and oncologic outcomes were compared between laparoscopic and open surgery. Of 226 patients with transverse colon cancer, 103 underwent laparoscopic surgery and 123 underwent open surgery. There were no differences in the patient characteristics between the two groups. Regarding perioperative outcomes, the operation time was significantly longer in the laparoscopic group than in the open group (267.3 vs 172.7 minutes, Pstudy showed that laparoscopic surgery is associated with several perioperative benefits and similar oncologic outcomes to open surgery for the resection of transverse colon cancer. Therefore, laparoscopic surgery offers a safe alternative to open surgery in patients with transverse colon cancer.

  10. Venous thromboembolism prophylaxis risk assessment in a general surgery cohort: a closed-loop audit.

    Science.gov (United States)

    McGoldrick, D M; Redmond, H P

    2017-08-01

    Venous thromboembolism (VTE) is a potential source of morbidity and mortality in surgical in-patients. A number of guidelines exist that advise on prophylactic measures. We aimed to assess VTE prophylaxis prescribing practices and compliance with a kardex-based risk assessment tool in a general surgery population. Data on general surgery in-patients were collected on two separate wards on two separate days. Drug kardexes were assessed for VTE prophylaxis measures and use of the risk assessment tool. NICE and SIGN guidelines were adopted as a gold standard. The audit results and information on the risk assessment tool were presented as an educational intervention at two separate departmental teaching sessions. A re-audit was completed after 3 months. In Audit A, 74 patients were assessed. 70% were emergency admissions. The risk assessment tool was completed in 2.7%. 75 and 97% of patients were correctly prescribed anti-embolic stockings (AES) and low-molecular weight heparin (LMWH), respectively. 30 patients were included in Audit B, 56% of whom were emergency admissions. 66% had a risk assessment performed, a statistically significant improvement (p audit and intervention.

  11. Methodological aspects of the 1993 Pelotas (Brazil) Birth Cohort Study

    Science.gov (United States)

    Victora, Cesar Gomes; Araújo, Cora Luiza Pavin; Menezes, Ana Maria Batista; Hallal, Pedro Curi; Vieira, Maria de Fátima; Neutzling, Marilda Borges; Gonçalves, Helen; Valle, Neiva Cristina; Lima, Rosangela Costa; Anselmi, Luciana; Behague, Dominique; Gigante, Denise Petrucci; Barros, Fernando Celso

    2010-01-01

    This paper describes the main methodological aspects of a cohort study, with emphasis on its recent phases, which may be relevant to investigators planning to carry out similar studies. In 1993, a population based study was launched in Pelotas, Southern Brazil. All 5,249 newborns delivered in the city’s hospitals were enrolled, and sub-samples were visited at the ages of one, three and six months and of one and four years. In 2004-5 it was possible to trace 87.5% of the cohort at the age of 10-12 years. Sub-studies are addressing issues related to oral health, psychological development and mental health, body composition, and ethnography. Birth cohort studies are essential for investigating the early determinants of adult disease and nutritional status, yet few such studies are available from low and middle-income countries where these determinants may differ from those documented in more developed settings. PMID:16410981

  12. Cohort profile: Study of Transition, Outcomes and Gender (STRONG) to assess health status of transgender people.

    Science.gov (United States)

    Quinn, Virginia P; Nash, Rebecca; Hunkeler, Enid; Contreras, Richard; Cromwell, Lee; Becerra-Culqui, Tracy A; Getahun, Darios; Giammattei, Shawn; Lash, Timothy L; Millman, Andrea; Robinson, Brandi; Roblin, Douglas; Silverberg, Michael J; Slovis, Jennifer; Tangpricha, Vin; Tolsma, Dennis; Valentine, Cadence; Ward, Kevin; Winter, Savannah; Goodman, Michael

    2017-12-27

    The Study of Transition, Outcomes and Gender (STRONG) was initiated to assess the health status of transgender people in general and following gender-affirming treatments at Kaiser Permanente health plans in Georgia, Northern California and Southern California. The objectives of this communication are to describe methods of cohort ascertainment and data collection and to characterise the study population. A stepwise methodology involving computerised searches of electronic medical records and free-text validation of eligibility and gender identity was used to identify a cohort of 6456 members with first evidence of transgender status (index date) between 2006 and 2014. The cohort included 3475 (54%) transfeminine (TF), 2892 (45%) transmasculine (TM) and 89 (1%) members whose natal sex and gender identity remained undetermined from the records. The cohort was matched to 127 608 enrollees with no transgender evidence (63 825 women and 63 783 men) on year of birth, race/ethnicity, study site and membership year of the index date. Cohort follow-up extends through the end of 2016. About 58% of TF and 52% of TM cohort members received hormonal therapy at Kaiser Permanente. Chest surgery was more common among TM participants (12% vs 0.3%). The proportions of transgender participants who underwent genital reconstruction surgeries were similar (4%-5%) in the two transgender groups. Results indicate that there are sufficient numbers of events in the TF and TM cohorts to further examine mental health status, cardiovascular events, diabetes, HIV and most common cancers. STRONG is well positioned to fill existing knowledge gaps through comparisons of transgender and reference populations and through analyses of health status before and after gender affirmation treatment. Analyses will include incidence of cardiovascular disease, mental health, HIV and diabetes, as well as changes in laboratory-based endpoints (eg, polycythemia and bone density), overall and in relation to

  13. Conservative approach to rectosigmoid endometriosis: a cohort study.

    Science.gov (United States)

    Egekvist, Anne G; Marinovskij, Edvard; Forman, Axel; Kesmodel, Ulrik S; Riiskjaer, Mads; Seyer-Hansen, Mikkel

    2017-06-01

    The aim of the study was to assess the risk of surgery after initial conservative treatment of rectosigmoid endometriosis in relation to demographic data. The study was conducted on the tertiary endometriosis referral unit, Aarhus University Hospital. Medical records, from patients seen from January 2009 onwards with a diagnosis of rectosigmoid endometriosis and more than 6 months' follow up were audited. Demographic data, results of magnetic resonance imaging and time to secondary surgery for rectosigmoid endometriosis were registered. Data on 238 patients diagnosed with rectosigmoid endometriosis were included. In all, 78 (32.8%) patients had primary surgery, 27 (11.3%) had secondary surgery and 133 (55.9%) continued conservative treatment throughout the observation period. Patients who underwent primary or secondary surgery were younger than patients continuing conservative treatment. In a tertiary referral center where about half of patients with rectosigmoid endometriosis were scheduled for conservative treatment, more than 80% of these avoided surgery. © 2017 Nordic Federation of Societies of Obstetrics and Gynecology.

  14. Predictors of functional vision changes after cataract surgery: the PROVISION study.

    Science.gov (United States)

    Chaudhary, Varun; Popovic, Marko; Holmes, Julie; Robinson, Tammy; Mak, Michael; Mohaghegh P, S Mohammad; Eino, Dalia; Mann, Keith; Kobetz, Lawrence; Gusenbauer, Kaela; Barbosa, Joshua

    2016-08-01

    To ascertain whether time-to-treatment, sex, age, preoperative functional vision scores, education, and ocular comorbidities predict change in functional vision pre- to postoperatively in patients receiving cataract surgery. Prospective cohort study. Three hundred and forty-three cataract patients at the Hamilton Regional Eye Institute. Participants 18 years or older scheduled to undergo cataract surgery completed the Catquest-9SF functional vision questionnaire on the day of their surgery and were mailed a survey 2-3 months postoperatively. Multivariate linear regression was used to determine the ability of predictors to explain variability in functional vision change between questionnaire administrations. One hundred and sixty-six patients completed both baseline and follow-up questionnaires. Mean age of the cohort was 73.8 ± 8.1 years. Most patients were female (59.6%), had cataract surgery performed for the first time (66.9%), and had spent a mean time of 20.3 ± 20.7 weeks waiting for surgery. Functional vision improved in 83.7% of patients. The mean baseline Catquest-9SF score was the only significant predictor of functional vision improvement (adjusted R(2) = 0.47; F1,159 = 144.6; p functional vision improved by 0.74 logits when mean baseline survey score increased by 1 logit. In most patients, functional vision improved after cataract surgery. Mean baseline Catquest-9SF score was a moderate predictor of the observed improvement. Copyright © 2016 Canadian Ophthalmological Society. Published by Elsevier Inc. All rights reserved.

  15. The Early vs. Late Infantile Strabismus Surgery Study: Monitoring Report

    NARCIS (Netherlands)

    H.J. Simonsz (Huib)

    1995-01-01

    textabstractAbstract: The Early vs. Late Infantile Strabismus Surgery Study Group is a group of strabismologists and orthoptists who investigate whether early or late surgery is preferable in infantile strabismus, in a non-randomized, prospective, multi-center trial. Infants between six and 18

  16. Japan Diabetic Nephropathy Cohort Study: study design, methods, and implementation.

    Science.gov (United States)

    Furuichi, Kengo; Shimizu, Miho; Toyama, Tadashi; Koya, Daisuke; Koshino, Yoshitaka; Abe, Hideharu; Mori, Kiyoshi; Satoh, Hiroaki; Imanishi, Masahito; Iwano, Masayuki; Yamauchi, Hiroyuki; Kusano, Eiji; Fujimoto, Shouichi; Suzuki, Yoshiki; Okuda, Seiya; Kitagawa, Kiyoki; Iwata, Yasunori; Kaneko, Shuichi; Nishi, Shinichi; Yokoyama, Hitoshi; Ueda, Yoshihiko; Haneda, Masakazu; Makino, Hirofumi; Wada, Takashi

    2013-12-01

    Diabetic nephropathy, leading to end-stage renal disease, has a considerable impact on public health and the social economy. However, there are few national registries of diabetic nephropathy in Japan. The aims of this prospective cohort study are to obtain clinical data and urine samples for revising the clinical staging of diabetic nephropathy, and developing new diagnostic markers for early diabetic nephropathy. The Japanese Society of Nephrology established a nationwide, web-based, and prospective registry system. On the system, there are two basic registries; the Japan Renal Biopsy Registry (JRBR), and the Japan Kidney Disease Registry (JKDR). In addition to the two basic registries, we established a new prospective registry to the system; the Japan Diabetic Nephropathy Cohort Study (JDNCS), which collected physical and laboratory data. We analyzed the data of 321 participants (106 female, 215 male; average age 65 years) in the JDNCS. Systolic and diastolic blood pressure was 130.1 and 72.3 mmHg, respectively. Median estimated glomerular filtration rate (eGFR) was 33.3 ml/min/1.73 m(2). Proteinuria was 1.8 g/gCr, and serum levels of albumin were 3.6 g/dl. The majority of the JDNCS patients presented with preserved eGFR and low albuminuria or low eGFR and advanced proteinuria. In the JRBR and JKDR registries, 484 and 125 participants, respectively, were enrolled as having diabetes mellitus. In comparison with the JRBR and JKDR registries, the JDNCS was characterized by diabetic patients presenting with low proteinuria with moderately preserved eGFR. There are few national registries of diabetic nephropathy to evaluate prognosis in Japan. Future analysis of the JDNCS will provide clinical insights into the epidemiology and renal and cardiovascular outcomes of type 2 diabetic patients in Japan.

  17. A prospective cohort study to investigate cost-minimisation, of Traditional open, open fAst track recovery and laParoscopic fASt track multimodal management, for surgical patients with colon carcinomas (TAPAS study

    Directory of Open Access Journals (Sweden)

    van Duivendijk Peter

    2010-06-01

    Full Text Available Abstract Background The present developments in colon surgery are characterized by two innovations: the introduction of the laparoscopic operation technique and fast recovery programs such as the Enhanced Recovery After Surgery (ERAS recovery program. The Tapas-study was conceived to determine which of the three treatment programs: open conventional surgery, open 'ERAS' surgery or laparoscopic 'ERAS' surgery for patients with colon carcinomas is most cost minimizing? Method/design The Tapas-study is a three-arm multicenter prospective cohort study. All patients with colon carcinoma, eligible for surgical treatment within the study period in four general teaching hospitals and one university hospital will be included. This design produces three cohorts: Conventional open surgery is the control exposure (cohort 1. Open surgery with ERAS recovery (cohort 2 and laparoscopic surgery with ERAS recovery (cohort 3 are the alternative exposures. Three separate time periods are used in order to prevent attrition bias. Primary outcome parameters are the two main cost factors: direct medical costs (real cost price calculation and the indirect non medical costs (friction method. Secondary outcome parameters are mortality, complications, surgical-oncological resection margins, hospital stay, readmission rates, time back to work/recovery, health status and quality of life. Based on an estimated difference in direct medical costs (highest cost factor of 38% between open and laparoscopic surgery (alfa = 0.01, beta = 0.05, a group size of 3×40 = 120 patients is calculated. Discussion The Tapas-study is three-arm multicenter cohort study that will provide a cost evaluation of three treatment programs for patients with colon carcinoma, which may serve as a guideline for choice of treatment and investment strategies in hospitals. Trial registration ISRCTN44649165.

  18. The role of birth cohorts in studies of adult health: the New York women's birth cohort.

    Science.gov (United States)

    Terry, Mary Beth; Flom, Julie; Tehranifar, Parisa; Susser, Ezra

    2009-09-01

    Epidemiological studies investigating associations between early life factors and adult health are often limited to studying exposures that can be reliably recalled in adulthood or obtained from existing medical records. There are few US studies with detailed data on the pre- and postnatal environment whose study populations are now in adulthood; one exception is the Collaborative Perinatal Project (CPP). We contacted former female participants of the New York site of the CPP who were born from 1959 to 1963 and were prospectively followed for 7 years to examine whether the pre- and postnatal environment is associated with adult health in women 40 years after birth. The New York CPP cohort is particularly diverse; at enrolment, the race/ethnicity distribution of mothers was approximately 30% White, 40% Black and 30% Puerto Rican. Of the 841 eligible women, we successfully traced 375 women (45%) and enrolled 262 women (70% of those traced). Baseline data were available for all eligible women, and we compared those who participated with the remaining cohort (n = 579). Higher family socio-economic status at age 7, availability of maternal social security number, and White race/ethnicity were statistically significantly associated with a higher probability of tracing. Of those traced, race/ethnicity was associated with participation, with Blacks and Puerto Ricans less likely to participate than Whites (OR = 0.5, 95% CI 0.3, 0.8, and OR = 0.5, 95% CI 0.3, 1.0, respectively). In addition, higher weight at 7 years was associated with lower participation (OR = 0.95, 95% CI 0.92, 0.99), but this association was observed only among the non-White participants. None of the other maternal characteristics, infant or early childhood growth measures was associated with participation or with tracing, either overall or within each racial/ethnic subgroup. Daughters' recall of early life factors such as pre-eclampsia (sensitivity = 24%) and birthweight were generally poor, with the

  19. Simultaneous bilateral cataract surgery: economic analysis; Helsinki Simultaneous Bilateral Cataract Surgery Study Report 2.

    Science.gov (United States)

    Leivo, Tiina; Sarikkola, Anna-Ulrika; Uusitalo, Risto J; Hellstedt, Timo; Ess, Sirje-Linda; Kivelä, Tero

    2011-06-01

    To present an economic-analysis comparison of simultaneous and sequential bilateral cataract surgery. Helsinki University Eye Hospital, Helsinki, Finland. Economic analysis. Effects were estimated from data in a study in which patients were randomized to have bilateral cataract surgery on the same day (study group) or sequentially (control group). The main clinical outcomes were corrected distance visual acuity, refraction, complications, Visual Function Index-7 (VF-7) scores, and patient-rated satisfaction with vision. Health-care costs of surgeries and preoperative and postoperative visits were estimated, including the cost of staff, equipment, material, floor space, overhead, and complications. The data were obtained from staff measurements, questionnaires, internal hospital records, and accountancy. Non-health-care costs of travel, home care, and time were estimated based on questionnaires from a random subset of patients. The main economic outcome measures were cost per VF-7 score unit change and cost per patient in simultaneous versus sequential surgery. The study comprised 520 patients (241 patients included non-health-care and time cost analyses). Surgical outcomes and patient satisfaction were similar in both groups. Simultaneous cataract surgery saved 449 Euros (€) per patient in health-care costs and €739 when travel and paid home-care costs were included. The savings added up to €849 per patient when the cost of lost working time was included. Compared with sequential bilateral cataract surgery, simultaneous bilateral cataract surgery provided comparable clinical outcomes with substantial savings in health-care and non-health-care-related costs. No author has a financial or proprietary interest in any material or method mentioned. Copyright © 2011 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.

  20. Investing in Prospective Cohorts for Etiologic Study of Occupational Exposures

    Science.gov (United States)

    Prospective cohorts have played a major role in understanding the role of diet, physical activity, medical conditions, and genes in the development of many diseases, but have not been widely used in the study of occupational exposures. Studies in agriculture are an exception. W...

  1. Dropout from exercise programs for seniors: A prospective cohort study

    NARCIS (Netherlands)

    Stiggelbout, M.; Hopman-Rock, M.; Tak, E.; Lechner, L.; Mechelen, W. van

    2005-01-01

    This study examines dropout incidence, moment of dropout, and switching behavior in organized exercise programs for seniors in the Netherlands, as determined in a prospective cohort study (with baseline measurements at the start of the exercise program and follow-up after 6 months; N = 1,725,

  2. Perioperative outcomes of adolescents undergoing bariatric surgery: the Teen-Longitudinal Assessment of Bariatric Surgery (Teen-LABS) study.

    Science.gov (United States)

    Inge, Thomas H; Zeller, Meg H; Jenkins, Todd M; Helmrath, Michael; Brandt, Mary L; Michalsky, Marc P; Harmon, Carroll M; Courcoulas, Anita; Horlick, Mary; Xanthakos, Stavra A; Dolan, Larry; Mitsnefes, Mark; Barnett, Sean J; Buncher, Ralph

    2014-01-01

    Severe obesity in childhood is a major health problem with few effective treatments. Weight-loss surgery (WLS) is being used to treat severely obese adolescents, although with very limited data regarding surgical safety for currently used, minimally invasive procedures. To assess the preoperative clinical characteristics and perioperative safety outcomes of severely obese adolescents undergoing WLS. This prospective, multisite observational study enrolled patients from February 28, 2007, through December 30, 2011. Consecutive patients aged 19 years or younger who were approved to undergo WLS (n = 277) were offered enrollment into the study at 5 academic referral centers in the United States; 13 declined participation and 22 did not undergo surgery after enrollment, thus the final analysis cohort consisted of 242 individuals. There were no withdrawals. This analysis examined preoperative anthropometrics, comorbid conditions, and major and minor complications occurring within 30 days of operation. All data were collected in a standardized fashion. Reoperations and hospital readmissions were adjudicated by independent reviewers to assess relatedness to the WLS procedure. The mean (SD) age of participants was 17.1 (1.6) years and the median body mass index (calculated as weight in kilograms divided by height in meters squared) was 50.5. Fifty-one percent demonstrated 4 or more major comorbid conditions. Laparoscopic Roux-en-Y gastric bypass, vertical sleeve gastrectomy, and adjustable gastric banding were performed in 66%, 28%, and 6% of patients, respectively. There were no deaths during the initial hospitalization or within 30 days of operation; major complications (eg, reoperation) were seen in 19 patients (8%). Minor complications (eg, readmission for dehydration) were noted in 36 patients (15%). All reoperations and 85% of readmissions were related to WLS. In this series, adolescents with severe obesity presented with abundant comorbid conditions. We observed

  3. The Resident-Run Minor Surgery Clinic: A Pilot Study to Safely Increase Operative Autonomy.

    Science.gov (United States)

    Wojcik, Brandon M; Fong, Zhi Ven; Patel, Madhukar S; Chang, David C; Petrusa, Emil; Mullen, John T; Phitayakorn, Roy

    General surgery training has evolved to align with changes in work hour restrictions, supervision regulations, and reimbursement practices. This has culminated in a lack of operative autonomy, leaving residents feeling inadequately prepared to perform surgery independently when beginning fellowship or practice. A resident-run minor surgery clinic increases junior resident autonomy, but its effects on patient outcomes have not been formally established. This pilot study evaluated the safety of implementing a resident-run minor surgery clinic within a university-based general surgery training program. Single institution case-control pilot study of a resident-run minor surgery clinic from 9/2014 to 6/2015. Rotating third-year residents staffed the clinic once weekly. Residents performed operations independently in their own procedure room. A supervising attending surgeon staffed each case prior to residents performing the procedure and viewed the surgical site before wound closure. Postprocedure patient complications and admissions to the hospital because of a complication were analyzed and compared with an attending control cohort. Massachusetts General Hospital General in Boston, MA; an academic tertiary care general surgery residency program. Ten third-year general surgery residents. Overall, 341 patients underwent a total of 399 procedures (110 in the resident clinic vs. 289 in the attending clinic). Minor surgeries included soft tissue mass excision (n = 275), abscess incision and drainage (n = 66), skin lesion excision (n = 37), skin tag removal (n = 15), and lymph node excision (n = 6). There was no significant difference in the overall rate of patients developing a postprocedure complication within 30 days (3.6% resident vs. 2.8% attending; p = 0.65); which persisted on multivariate analysis. Similar findings were observed for the rate of hospital admission resulting from a complication. Resident evaluations overwhelmingly supported the rotation, citing

  4. Value of preoperative esophageal function studies before laparoscopic antireflux surgery.

    Science.gov (United States)

    Chan, Walter W; Haroian, Laura R; Gyawali, C Prakash

    2011-09-01

    The value of esophageal manometry and ambulatory pH monitoring before laparoscopic antireflux surgery (LARS) has been questioned because tailoring the operation to the degree of hypomotility often is not required. This study evaluated a consecutive cohort of patients referred for esophageal function studies in preparation for LARS to determine the rates of findings that would alter surgical decisions. High-resolution manometry (HRM) was performed for each subject using a 21-lumen water-perfused system, and motor function was characterized. Gastroesophageal reflux disease (GERD) was evident from ambulatory pH monitoring if thresholds for acid exposure time and/or positive symptom association probability were passed. Of 1,081 subjects (age, 48.4 ± 0.4 years; 56.7% female) undergoing preoperative HRM, 723 (66.9%) also had ambulatory pH testing performed. Lower esophageal sphincter (LES) hypotension (38.9%) and nonspecific spastic disorder (NSSD) of the esophageal body (36.1%) were common. Obstructive LES pathophysiology was noted in 2.5% (achalasia in 1%; incomplete LES relaxation in 1.5%), and significant esophageal body hypomotility in 4.5% (aperistalsis in 3.2%; severe hypomotility in 1.3%) of the subjects. Evidence of GERD was absent in 23.9% of the subjects. Spastic disorders were more frequent in the absence of GERD (43.9% vs. 23.1% with GERD; p esophageal function testing that could be used in preoperative counseling and candidate selection. Physiologic testing remains important in the preoperative evaluation of patients being considered for LARS.

  5. Incense use and respiratory tract carcinomas: a prospective cohort study

    DEFF Research Database (Denmark)

    Yuan, J.M.; Wang, R.; Koh, W.P.

    2008-01-01

    of cancer and ages 45 to 74 years completed a comprehensive interview regarding living conditions and dietary and lifestyle factors. Through linkage to population-based registries, the cohort was followed through 2005 and cancer occurrence determined. The relative risk for these cancers associated......BACKGROUND: Incense use is an integral part of daily life in large parts of Asia. The burning of incense is a powerful producer of particulate matter and the smoke contains a multitude of well-characterized carcinogens. However, to the authors' knowledge, no convincing association has been reported...... between exposure to incense smoke and the development of cancer. Therefore, the relation between incense use and the risk of respiratory tract carcinomas was analyzed in a prospective cohort study. METHODS: Between 1993 and 1998, a population-based cohort of 61,320 Singapore Chinese who were free...

  6. A Cohort Study on Meniscal Lesions among Airport Baggage Handlers

    DEFF Research Database (Denmark)

    Mikkelsen, Sigurd; Brauer, Charlotte; Pedersen, Ellen Bøtker

    2016-01-01

    socioeconomic background and less knee-straining work. Baggage handlers lifted suitcases with an average weight of approximately 15 kg, in total approximately five tonnes during a 9-hour workday. The cohort was followed in the National Patient Register and Civil Registration System. The outcome was a first time......Meniscal lesions are common and may contribute to the development of knee arthrosis. A few case-control and cross-sectional studies have identified knee-straining work as risk factors for meniscal lesions, but exposure-response relations and the role of specific exposures are uncertain...... of unskilled men employed at Copenhagen Airport or in other companies in the metropolitan Copenhagen area from 1990 to 2012 (the Copenhagen Airport Cohort). The cohort at risk included 3,307 airport baggage handlers with heavy lifting and kneeling or squatting work tasks and 63,934 referents with a similar...

  7. Distress among young adult cancer survivors: a cohort study.

    Science.gov (United States)

    Yanez, Betina; Garcia, Sofia F; Victorson, David; Salsman, John M

    2013-09-01

    Being diagnosed with cancer as a young adult can lead to significant psychological distress and impaired quality of life. Compared to children and older adults diagnosed with cancer, fewer studies have addressed psychological distress among young adult cancer survivors. This study sought to identify the prevalence of, and factors associated with, distress among young adult cancer survivors (ages 18-39). Young adult cancer survivors (N = 335, mean age = 31.8, women = 68.4%) were recruited from an online research panel and stratified by cohort (time postactive treatment: 0-12, 13-24, and 25-60 months). Participants completed measures assessing demographic and clinical characteristics, global impact of cancer, cancer-related education and work interruption, and cancer-specific distress using the impact of event scale (IES). The mean score on the IES (M = 31.0, range = 0-75) was above the cut point of 20, suggesting clinically elevated distress. Analysis of covariance revealed significant main effects for cohort, global impact and cancer-related education/work interruption, and an interaction between cohort and cancer-related education/work interruption on distress. Although there was no significant effect of education/work interruption on distress for those in the 0-12 month cohort (p = .88), survivors in the 13-24 and 25-60 month cohorts reporting education/work interruption were significantly more distressed than those not reporting education/work interruption in the respective cohorts (p cancer survivors face unique challenges. These data underscore the importance of attending to cancer-related distress beyond the completion of treatment and may help inform targeted interventions to prevent or reduce significant distress and related sequelae in this population.

  8. Representativeness of the LifeLines Cohort Study

    NARCIS (Netherlands)

    Klijs, B.; Scholtens, S.; Mandemakers, J.J.; Snieder, H.; Stolk, R.P.; Smidt, N.

    2015-01-01

    Background LifeLines is a large prospective population-based three generation cohort study in the north of the Netherlands. Different recruitment strategies were adopted: recruitment of an index population via general practitioners, subsequent inclusion of their family members, and online

  9. Cohort-Sequential Study of Conflict Inhibition during Middle Childhood

    Science.gov (United States)

    Rollins, Leslie; Riggins, Tracy

    2017-01-01

    This longitudinal study examined developmental changes in conflict inhibition and error correction in three cohorts of children (5, 7, and 9 years of age). At each point of assessment, children completed three levels of Luria's tapping task (1980), which requires the inhibition of a dominant response and maintenance of task rules in working…

  10. A Phenomenological Study of an Indonesian Cohort Group's Transformative Learning

    Science.gov (United States)

    Budiraharjo, Markus

    2013-01-01

    This study was set to investigate how a cohort of ten Indonesian teachers experienced transformations in their teaching professionalism upon receiving an assignment of instructional leadership training to other school leaders. These ten teachers, who came from three different Indonesian Jesuit high schools and one archdiocese-based educational…

  11. European birth cohort studies on asthma and atopic diseases I

    DEFF Research Database (Denmark)

    Keil, T; Kulig, M; Simpson, A

    2006-01-01

    , recruitment process and follow-up rates. A subsequent review (part II) will compare outcome and exposure parameters. METHODS: For each birth cohort, we collected detailed information regarding recruitment process, study setting, baseline data (pregnancy, birth, parents/siblings) as well as follow-up rates...

  12. Beyond repair - family and community reintegration after obstetric fistula surgery: study protocol.

    Science.gov (United States)

    Byamugisha, Josaphat; El Ayadi, Alison; Obore, Susan; Mwanje, Haruna; Kakaire, Othman; Barageine, Justus; Lester, Felicia; Butrick, Elizabeth; Korn, Abner; Nalubwama, Hadija; Knight, Sharon; Miller, Suellen

    2015-12-18

    Obstetric fistula is a debilitating birth injury that affects an estimated 2-3 million women globally, most in sub-Saharan Africa and Asia. The urinary and/or fecal incontinence associated with fistula affects women physically, psychologically and socioeconomically. Surgical management of fistula is available with clinical success rates ranging from 65-95 %. Previous research on fistula repair outcomes has focused primarily on clinical outcomes without considering the broader goal of successful reintegration into family and community. The objectives for this study are to understand the process of family and community reintegration post fistula surgery and develop a measurement tool to assess long-term success of post-surgical family and community reintegration. This study is an exploratory sequential mixed-methods design including a preliminary qualitative component comprising in-depth interviews and focus group discussions to explore reintegration to family and community after fistula surgery. These results will be used to develop a reintegration tool, and the tool will be validated within a small longitudinal cohort (n = 60) that will follow women for 12 months after obstetric fistula surgery. Medical record abstraction will be conducted for patients managed within the fistula unit. Ethical approval for the study has been granted. This study will provide information regarding the success of family and community reintegration among women returning home after obstetric fistula surgery. The clinical and research community can utilize the standardized measurement tool in future studies of this patient population.

  13. The Scandinavian baltic pancreatic club (SBPC) database: design, rationale and characterisation of the study cohort.

    Science.gov (United States)

    Olesen, Søren S; Poulsen, Jakob L; Drewes, Asbjørn M; Frøkjær, Jens B; Laukkarinen, Johanna; Parhiala, Mikael; Rix, Iben; Novovic, Srdan; Lindkvist, Björn; Bexander, Louise; Dimcevski, Georg; Engjom, Trond; Erchinger, Friedemann; Haldorsen, Ingfrid S; Pukitis, Aldis; Ozola-Zālīte, Imanta; Haas, Stephan; Vujasinovic, Miroslav; Löhr, J Matthias; Gulbinas, Antanas; Jensen, Nanna M; Jørgensen, Maiken T; Nøjgaard, Camilla

    2017-08-01

    Chronic pancreatitis (CP) is a multifaceted disease associated with several risk factors and a complex clinical presentation. We established the Scandinavian Baltic Pancreatic Club (SBPC) Database to characterise and study the natural history of CP in a Northern European cohort. Here, we describe the design of the database and characteristics of the study cohort. Nine centres from six different countries in the Scandinavian-Baltic region joined the database. Patients with definitive or probable CP (M-ANNHEIM diagnostic criteria) were included. Standardised case report forms were used to collect several assessment variables including disease aetiology, duration of CP, preceding acute pancreatitis, as well as symptoms, complications, and treatments. The clinical stage of CP was characterised according to M-ANNNHEIM. Yearly follow-up is planned for all patients. The study cohort comprised of 910 patients (608 men: 302 women; median age 58 (IQR: 48-67) years with definite 848 (93%) or probable CP 62 (7%). Nicotine (70%) and alcohol (59%) were the most frequent aetiologies and seen in combination in 44% of patients. A history of recurrent acute pancreatitis was seen in 49% prior to the development of CP. Pain (69%) and exocrine pancreatic insufficiency (68%) were the most common complications followed by diabetes (43%). Most patients (30%) were classified as clinical stage II (symptomatic CP with exocrine or endocrine insufficiency). Less than 10% of the patients had undergone pancreatic surgery. The SBPC database provides a mean for future prospective, observational studies of CP in the Northern European continent.

  14. The early psychological adjustment of cleft patients after maxillary distraction osteogenesis and conventional orthognathic surgery: a preliminary study.

    Science.gov (United States)

    Cheung, Lim Kwong; Loh, John Ser Pheng; Ho, Samuel M Y

    2006-12-01

    To compare the early psychological changes of cleft lip and palate (CLP) and noncleft patients after maxillofacial corrective surgery, including maxillary distraction osteogenesis and conventional orthognathic surgery. Nine CLP patients were compared with a group of 9 non-CLP patients having similar dentofacial deformities in a prospective longitudinal cohort study. Five of the CLP patients underwent maxillary distraction osteogenesis and 4 underwent conventional orthognathic surgery. A control group of 9 noncleft patients received conventional orthognathic surgery. All patients completed a set of questionnaires to enable their psychological profile to be assessed. The data were collected immediately before surgery (T1), and at 3 weeks (T2) and 12 weeks (T3) after surgery. The CLP patients treated with distraction osteogenesis were happier, but had a higher level of social anxiety and distress than the CLP patients receiving conventional orthognathic surgery. On the other hand, the CLP patients overall were happier, with lower social anxiety and distress, than the noncleft control group. The CLP patients showed a higher level of parental self-esteem than the noncleft patients. This preliminary study shows that CLP patients were generally happier, and had a higher level of parental support, than normal patients suffering from dentofacial deformities. Maxillary distraction osteogenesis seemed to induce a higher level of anxiety and distress in CLP patients than conventional orthognathic surgery in both cleft and noncleft patients.

  15. Outcome after introduction of laparoscopic appendectomy in children: A cohort study.

    Science.gov (United States)

    Svensson, Jan F; Patkova, Barbora; Almström, Markus; Eaton, Simon; Wester, Tomas

    2016-03-01

    Acute appendicitis in children is common and the optimal treatment modality is still debated, even if recent data suggest that laparoscopic surgery may result in shorter postoperative length of stay without an increased number of complications. The aim of the study was to compare the outcome of open and laparoscopic appendectomies during a transition period. This was a retrospective cohort study with prospectively collected data. All patients who underwent an operation for suspected appendicitis at the Astrid Lindgren Children's Hospital in Stockholm between 2006 and 2010 were included in the study. 1745 children were included in this study, of whom 1010 had a laparoscopic intervention. There were no significant differences in the rate of postoperative abscesses, wound infections, readmissions or reoperations between the two groups. The median operating time was longer for laparoscopic appendectomy than for open appendectomy, 51 vs. 37minutes (pregression analysis, the apparent decrease in length of stay with laparoscopy could be ascribed to the general trend toward decreased length of stay over time, with no specific additional effect of laparoscopy. Our data show no difference in outcome between open and laparoscopic surgery for acute appendicitis in children in regard of complications. The initial assumption that the patients treated with laparoscopic surgery had a shorter postoperative stay was not confirmed with linear regression, which showed that the assumed difference was due only to a trend toward shorter postoperative length of stay over time, regardless of the surgical intervention. Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.

  16. The Misconception of Case-Control Studies in the Plastic Surgery Literature: A Literature Audit.

    Science.gov (United States)

    Hatchell, Alexandra C; Farrokhyar, Forough; Choi, Matthew

    2017-06-01

    Case-control study designs are commonly used. However, many published case-control studies are not true case-controls and are in fact mislabeled. The purpose of this study was to identify all case-control studies published in the top three plastic surgery journals over the past 10 years, assess which were truly case-control studies, clarify the actual design of the articles, and address common misconceptions. MEDLINE, Embase, and Web of Science databases were searched for case-control studies in the three highest-impact factor plastic surgery journals (2005 to 2015). Two independent reviewers screened the resulting titles, abstracts, and methods, if applicable, to identify articles labeled as case-control studies. These articles were appraised and classified as true case-control studies or non-case-control studies. The authors found 28 articles labeled as case-control studies. However, only six of these articles (21 percent) were truly case-control designs. Of the 22 incorrectly labeled studies, one (5 percent) was a randomized controlled trial, three (14 percent) were nonrandomized trials, two (9 percent) were prospective comparative cohort designs, 14 (64 percent) were retrospective comparative cohort designs, and two (9 percent) were cross-sectional designs. The mislabeling was worse in recent years, despite increases in evidence-based medicine awareness. The majority of published case-control studies are not in fact case-control studies. This misunderstanding is worsening with time. Most of these studies are actually comparative cohort designs. However, some studies are truly clinical trials and thus a higher level of evidence than originally proposed.

  17. A Longitudinal Study of Functional Outcomes in Patients with Limb Salvage Surgery for Soft Tissue Sarcoma

    Directory of Open Access Journals (Sweden)

    Eunsun Oh

    2018-01-01

    Full Text Available Background. Many studies have reported on the surgical outcomes of soft tissue sarcoma. However, there was no longitudinal cohort study. Because time is the most valuable factor for functional recovery, adjusting time value was the key for finding the causal relationship between other risk factors and postoperative function. Therefore, existing cross-sectional studies can neither fully explain the causal relationship between the risk factors and the functional score nor predict functional recovery. The aim of this study was to determine important predictive factors that affect postoperative functional outcomes and longitudinal changes in functional outcomes in patients who had undergone limb-sparing surgery (LSS for soft tissue sarcoma (STS. Methods. Between January 2008 and December 2014, we retrospectively enrolled 150 patients who had undergone LSS for STS and had been assessed for postoperative functional outcomes with questionnaires. To evaluate functional outcomes, we used the Musculoskeletal Tumor Society (MSTS score and Toronto Extremity Salvage Score (TESS. Multivariate generalized estimating equation (GEE analysis was used to identify the predictive factors, including size, stage, and anatomic location of tumor, bone resection, flap reconstruction, age, and time after surgery. Each continuous variable such as age and time after surgery was explored for statistically significant cutoff points using the Wilcoxon rank sum test. Results. Functional scores significantly improved until the second year after surgery and plateaued for the rest of the 5-year period. Age p<0.0001, bone resection p=0.0004, and time after surgery p<0.0001 were identified as significant predictive factors. The functional score was significantly higher in patients younger than 47 years old. Conclusions. Functional outcomes can improve until the second year after surgery. Patients who were older than 47 and underwent bone resection may have poor final functional

  18. Consumption and direct costs of dental care for patients with head and neck cancer: A 16-year cohort study.

    Science.gov (United States)

    Lexomboon, Duangjai; Karlsson, Pär; Adolfsson, Jan; Ekbom, Anders; Naimi-Akbar, Aron; Bahmanyar, Shahram; Montgomery, Scott; Sandborgh-Englund, Gunilla

    2017-01-01

    Patients with head and neck (H&N) cancer are commonly treated with surgery and/or radiotherapy, which can increase the risk of oral infection, dental caries, and periodontal disease. The present study investigated dental care consumption and costs in patient with H&N cancer before and after the cancer diagnosis. Data from Swedish regional and national registers were used to follow up dental care utilization and dental procedure costs. The analysis included 2,754 patients who had been diagnosed with H&N cancer (exposed cohort) in Stockholm County, Sweden, during 2000-2012 and 13,036 matched persons without cancer (unexposed cohort). The exposed cohort was sub-grouped into irradiated and non-irradiated patients for analysis. The exposed cohort underwent a moderately higher number of dental procedures per year than the unexposed cohort in both the year of the cancer diagnosis and the year after cancer diagnosis; in addition, these numbers were higher in the irradiated than in the non-irradiated subgroup of the exposed cohort. Dental care consumption and costs in the exposed cohort declined over time but remained at a slightly higher level than in the unexposed cohort over the long term (more than two years). Examinations and preventive procedures accounted for most of the higher consumption in the short term (2 years) and at the longer term follow-up. Swedish national insurance subsidized costs for dental treatment, which were highest in the irradiated subgroup and lowest in the unexposed cohort. Direct costs to the patient, however, were similar among the groups. Swedish national health insurance protects patients with H&N cancer from high dental expenditures. Further studies on the cost-effectiveness of preventive dental care for patients are needed.

  19. Breast implants and anaplastic large-cell lymphoma: a danish population-based cohort study.

    Science.gov (United States)

    Vase, Maja Ølholm; Friis, Søren; Bautz, Andrea; Bendix, Knud; Sørensen, Henrik Toft; d'Amore, Francesco

    2013-11-01

    A potential link between breast implants and anaplastic large-cell lymphoma (ALCL) has been suggested. We examined lymphoma occurrence in a nationwide cohort of 19,885 Danish women who underwent breast implant surgery during 1973-2010. Standardized incidence ratios (SIR), with 95% confidence intervals (CI), for ALCL and lymphoma overall associated with breast implantation were calculated. During 179,246 person-years of follow-up, we observed 31 cases of lymphoma among cohort members. No cases of ALCL were identified. SIRs for ALCL and lymphoma overall were zero (95% CI, 0-10.3) and 1.20 (95% CI, 0.82-1.70), respectively. In our nationwide cohort study, we did not find an increased risk of lymphoma in general, or ALCL in particular, among Danish women who underwent breast implantation. However, our evaluation of ALCL risk was limited by the rarity of the disease. Our results do not support an association between breast implants and ALCL and are consistent with other studies on cancer risk and breast implants. ©2013 AACR.

  20. The Congenital Heart Disease Genetic Network Study: Cohort description.

    Directory of Open Access Journals (Sweden)

    Thanh T Hoang

    Full Text Available The Pediatric Cardiac Genomics Consortium (PCGC designed the Congenital Heart Disease Genetic Network Study to provide phenotype and genotype data for a large congenital heart defects (CHDs cohort. This article describes the PCGC cohort, overall and by major types of CHDs (e.g., conotruncal defects and subtypes of conotrucal heart defects (e.g., tetralogy of Fallot and left ventricular outflow tract obstructions (e.g., hypoplastic left heart syndrome. Cases with CHDs were recruited through ten sites, 2010-2014. Information on cases (N = 9,727 and their parents was collected through interviews and medical record abstraction. Four case characteristics, eleven parental characteristics, and thirteen parent-reported neurodevelopment outcomes were summarized using counts and frequencies and compared across CHD types and subtypes. Eleven percent of cases had a genetic diagnosis. Among cases without a genetic diagnosis, the majority had conotruncal heart defects (40% or left ventricular outflow tract obstruction (21%. Across CHD types, there were significant differences (p<0.05 in the distribution of all four case characteristics (e.g., sex, four parental characteristics (e.g., maternal pregestational diabetes, and five neurodevelopmental outcomes (e.g., learning disabilities. Several characteristics (e.g., sex were also significantly different across CHD subtypes. The PCGC cohort is one of the largest CHD cohorts available for the study of genetic determinants of risk and outcomes. The majority of cases do not have a genetic diagnosis. This description of the PCGC cohort, including differences across CHD types and subtypes, provides a reference work for investigators who are interested in collaborating with or using publically available resources from the PCGC.

  1. Missing Value Imputation Improves Mortality Risk Prediction Following Cardiac Surgery: An Investigation of an Australian Patient Cohort.

    Science.gov (United States)

    Karim, Md Nazmul; Reid, Christopher M; Tran, Lavinia; Cochrane, Andrew; Billah, Baki

    2017-03-01

    The aim of this study was to evaluate the impact of missing values on the prediction performance of the model predicting 30-day mortality following cardiac surgery as an example. Information from 83,309 eligible patients, who underwent cardiac surgery, recorded in the Australia and New Zealand Society of Cardiac and Thoracic Surgeons (ANZSCTS) database registry between 2001 and 2014, was used. An existing 30-day mortality risk prediction model developed from ANZSCTS database was re-estimated using the complete cases (CC) analysis and using multiple imputation (MI) analysis. Agreement between the risks generated by the CC and MI analysis approaches was assessed by the Bland-Altman method. Performances of the two models were compared. One or more missing predictor variables were present in 15.8% of the patients in the dataset. The Bland-Altman plot demonstrated significant disagreement between the risk scores (prisk of mortality. Compared to CC analysis, MI analysis resulted in an average of 8.5% decrease in standard error, a measure of uncertainty. The MI model provided better prediction of mortality risk (observed: 2.69%; MI: 2.63% versus CC: 2.37%, Pvalues improved the 30-day mortality risk prediction following cardiac surgery. Copyright © 2016 Australian and New Zealand Society of Cardiac and Thoracic Surgeons (ANZSCTS) and the Cardiac Society of Australia and New Zealand (CSANZ). Published by Elsevier B.V. All rights reserved.

  2. Trends in the incidence rate, type and treatment of surgically verified endometriosis - a nationwide cohort study.

    Science.gov (United States)

    Saavalainen, Liisu; Tikka, Tuulia; But, Anna; Gissler, Mika; Haukka, Jari; Tiitinen, Aila; Härkki, Päivi; Heikinheimo, Oskari

    2018-01-01

    To study the trends in incidence rate, type and surgical treatment, and patient characteristics of surgically verified endometriosis during 1987-2012. This is a register-based cohort study. We identified women receiving their first diagnosis of endometriosis in surgery from the Finnish Hospital Discharge Register (FHDR). Quality of the FHDR records was assessed bidirectionally. The age-standardized incidence rates of the first surgically verified endometriosis was assessed by calendar year. The cohort comprises 49 956 women. The quality assessment suggested the FHDR data to be of good quality. The most common diagnosis, ovarian endometriosis (46%), was associated with highest median age 38.5 years (interquartile range 31.0-44.8) and the second most common diagnosis, peritoneal endometriosis (40%), with median age 34.9 years (28.6-41.7). Between 1987 and 2012, a decrease was observed in the median age, from 38.8 (32.3-43.6) to 34.0 (28.9-41.0) years, and in the age-standardized incidence rate from 116 [95% confidence interval (CI) 112-121] to 45 (42-48) per 100 000 women. The proportion of hysterectomy as a first surgical treatment decreased from 38 to 19%, whereas that of laparoscopy increased from 42 to 73% when comparing 1987-1995 with 1996-2012. This nationwide cohort of surgically verified endometriosis showed a decrease in the incidence rate and in the patient age at the time of first diagnosis, even though the proportion of laparoscopy has increased. The number of hysterectomies has decreased. These changes are likely to reflect the evolving diagnostics, increasing awareness of endometriosis, and effective use of medical treatment before surgery. © 2017 Nordic Federation of Societies of Obstetrics and Gynecology.

  3. Bariatric surgery in adolescents and young adults--safety and effectiveness in a cohort of 345 patients.

    Science.gov (United States)

    Lennerz, B S; Wabitsch, M; Lippert, H; Wolff, S; Knoll, C; Weiner, R; Manger, T; Kiess, W; Stroh, C

    2014-03-01

    To examine the safety and effectiveness of adolescent bariatric surgery and to improve treatment recommendations for this age group. Prospective longitudinal registry. Since January 2005, patients undergoing bariatric surgery in Germany are enlisted in an online registry called 'study for quality assurance in obesity surgeries'. Adolescents and young adults up to the age of 21 years, operated from January 2005 to December 2010. Weight, BMI, comorbidities, complication rates. N=345 primary procedures were recorded by 58 hospitals. N=51 patients were under the age of 18 years. Follow-up information was available for 48% (n=167) of patients, with an average observation period of 544±412 days (median: 388 days). The most common surgical techniques were gastric banding (n=118, 34.2%), gastric bypass (n=116, 33.6%) and sleeve gastrectomy (n=78, 22.6%). Short-term complications (intra-operative; general postoperative; specific postoperative) were slightly lower for gastric banding (0.8%; 2.5%; 0.8%) than for gastric bypass (2.6%; 5.2%; 1.7%) or sleeve gastrectomy (0%; 9.0%; 7.7%). In accordance with published findings, weight and BMI reduction were lower for gastric banding (-28 kg; -9.5 kg m(-2)) compared to gastric bypass (-50 kg; -16.4 kg m(-2)) Pbariatric surgery has low short-term complication rates and results in sustained weight loss in adolescents. However, the missing long-term observations prohibit a final conclusion about lasting effectiveness and safety. Clinical trials with structured follow-up programs and mechanisms to ascertain patient adherences are needed.

  4. Plasma glutamine levels before cardiac surgery are related to post-surgery infections; an observational study

    Directory of Open Access Journals (Sweden)

    Hanneke Buter

    2016-11-01

    Full Text Available Abstract Background A low plasma glutamine level was found in 34% of patients after elective cardiothoracic surgery. This could be a result of the inflammation caused by surgical stress or the use of extracorporeal circulation (ECC. But it is also possible that plasma glutamine levels were already lowered before surgery and reflect an impaired metabolic state and a higher likelihood to develop complications. In the present study plasma glutamine levels were measured before and after cardiac surgery and we questioned whether there is a relation between plasma glutamine levels and duration of ECC and the occurrence of postoperative infections. Methods We performed a single-centre prospective, observational study in a closed-format, 20-bed, mixed ICU in a tertiary teaching hospital. We included consecutive patients after elective cardiac surgery with use of extracorporeal circulation. Blood samples were collected on the day prior to surgery and at admission on the ICU. The study was approved by the local Medical Ethics Committee (Regional Review Committee Patient-related Research, Medical Centre Leeuwarden, nWMO 115, April 28th 2015. Results Ninety patients were included. Pre-operative plasma glutamine level was 0.42 ± 0.10 mmol/l and post-operative 0.38 ± 0.09 mmol/l (p < 0.001. There was no relation between duration of extracorporeal circulation or aortic occlusion time and changes in plasma glutamine levels. A logistic regression analysis showed a significant correlation between the presence of a positive culture during the post-operative course and pre-operative plasma glutamine levels (p = 0.04. Conclusion Plasma glutamine levels are significantly lower just after cardiac surgery compared to pre-operative levels. We did not find a relation between the decrease in plasma glutamine levels and the duration of extracorporeal circulation or aortic clamp time. There was a correlation between pre-operative plasma glutamine levels

  5. Rationale, design, and methods for Canadian alliance for healthy hearts and minds cohort study (CAHHM) - a Pan Canadian cohort study.

    Science.gov (United States)

    Anand, Sonia S; Tu, Jack V; Awadalla, Philip; Black, Sandra; Boileau, Catherine; Busseuil, David; Desai, Dipika; Després, Jean-Pierre; de Souza, Russell J; Dummer, Trevor; Jacquemont, Sébastien; Knoppers, Bartha; Larose, Eric; Lear, Scott A; Marcotte, Francois; Moody, Alan R; Parker, Louise; Poirier, Paul; Robson, Paula J; Smith, Eric E; Spinelli, John J; Tardif, Jean-Claude; Teo, Koon K; Tusevljak, Natasa; Friedrich, Matthias G

    2016-07-27

    The Canadian Alliance for Healthy Hearts and Minds (CAHHM) is a pan-Canadian, prospective, multi-ethnic cohort study being conducted in Canada. The overarching objective of the CAHHM is to understand the association of socio-environmental and contextual factors (such as societal structure, activity, nutrition, social and tobacco environments, and access to health services) with cardiovascular risk factors, subclinical vascular disease, and cardiovascular and other chronic disease outcomes. Participants between 35 and 69 years of age are being recruited from existing cohorts and a new First Nations Cohort to undergo a detailed assessment of health behaviours (including diet and physical activity), cognitive function, assessment of their local home and workplace environments, and their health services access and utilization. Physical measures including weight, height, waist/hip circumference, body fat percentage, and blood pressure are collected. In addition, eligible participants undergo magnetic resonance imaging (MRI) of the brain, heart, carotid artery and abdomen to detect early subclinical vascular disease and ectopic fat deposition. CAHHM is a prospective cohort study designed to investigate the impact of community level factors, individual health behaviours, and access to health services, on cognitive function, subclinical vascular disease, fat distribution, and the development of chronic diseases among adults living in Canada.

  6. Outpatient- and inpatient-based buckling surgery: a comparative study

    Directory of Open Access Journals (Sweden)

    Lee JC

    2014-04-01

    Full Text Available Jin Cheol Lee,* Yu Cheol Kim*Department of Ophthalmology, Keimyung University School of Medicine, Dongsan Medical Center, Daegu, Korea *Both authors contributed equally to this workPurpose: To evaluate the clinical outcomes of ambulatory buckling surgery, comparing outpatient- with inpatient-based surgery.Methods: The authors performed a retrospective study of 80 consecutive cases of rhegmato genous retinal detachment from January 2009 to December 2011 treated by scleral buckling surgery. Two groups of patients were defined according to inpatient (group 1 or outpatient (group 2 surgery, and a comparison of several parameters between these two groups was performed.Results: Of the 80 subjects in this study, the average age of group 1 (50 patients was 49.7 years, and that of group 2 (30 patients was 47.5 years. There were no statistically significant differences in the average logarithm of the minimum angle of resolution-visual acuity, the condition of the lens, or the presence of retinal lattice degeneration prior to the surgery between the groups. There were no statistically significant differences in the patterns of tear or retinal detachment or in surgical procedure between the groups. Comparing the best-corrected visual acuity after 6 months with that prior to the surgery, the changes in group 1 and group 2 were 0.26 and 0.31, respectively. The functional success rates of group 1 and group 2 after 6 months were 90% and 93%, respectively, and the anatomical success rates of group 1 and group 2 after 6 months were 94% and 96%, respectively, but these were also statistically insignificant.Conclusion: Hospitalization is not essential for buckling surgery in uncomplicated rhegmatogenous retinal detachment surgery.Keywords: ambulatory, scleral buckling, rhegmatogenous retinal detachment

  7. Safety and efficacy of hysteroscopic sterilization compared with laparoscopic sterilization: an observational cohort study

    Science.gov (United States)

    Mao, Jialin; Pfeifer, Samantha; Schlegel, Peter

    2015-01-01

    Objective To compare the safety and efficacy of hysteroscopic sterilization with the “Essure” device with laparoscopic sterilization in a large, all-inclusive, state cohort. Design Population based cohort study. Settings Outpatient interventional setting in New York State. Participants Women undergoing interval sterilization procedure, including hysteroscopic sterilization with Essure device and laparoscopic surgery, between 2005 and 2013. Main outcomes measures Safety events within 30 days of procedures; unintended pregnancies and reoperations within one year of procedures. Mixed model accounting for hospital clustering was used to compare 30 day and 1 year outcomes, adjusting for patient characteristics and other confounders. Time to reoperation was evaluated using frailty model for time to event analysis. Results We identified 8048 patients undergoing hysteroscopic sterilization and 44 278 undergoing laparoscopic sterilization between 2005 and 2013 in New York State. There was a significant increase in the use of hysteroscopic procedures during this period, while use of laparoscopic sterilization decreased. Patients undergoing hysteroscopic sterilization were older than those undergoing laparoscopic sterilization and were more likely to have a history of pelvic inflammatory disease (10.3% v 7.2%, P<0.01), major abdominal surgery (9.4% v 7.9%, P<0.01), and cesarean section (23.2% v 15.4%, P<0.01). At one year after surgery, hysteroscopic sterilization was not associated with a higher risk of unintended pregnancy (odds ratio 0.84 (95% CI 0.63 to 1.12)) but was associated with a substantially increased risk of reoperation (odds ratio 10.16 (7.47 to 13.81)) compared with laparoscopic sterilization. Conclusions Patients undergoing hysteroscopic sterilization have a similar risk of unintended pregnancy but a more than 10-fold higher risk of undergoing reoperation compared with patients undergoing laparoscopic sterilization. Benefits and risks of both procedures

  8. Application of Metabolomics to Study Effects of Bariatric Surgery

    Directory of Open Access Journals (Sweden)

    Paulina Samczuk

    2018-01-01

    Full Text Available Bariatric surgery was born in the 1950s at the University of Minnesota. From this time, it continues to evolve and, by the same token, gives new or better possibilities to treat not only obesity but also associated comorbidities. Metabolomics is also a relatively young science discipline, and similarly, it shows great potential for the comprehensive study of the dynamic alterations of the metabolome. It has been widely used in medicine, biology studies, biomarker discovery, and prognostic evaluations. Currently, several dozen metabolomics studies were performed to study the effects of bariatric surgery. LC-MS and NMR are the most frequently used techniques to study main effects of RYGB or SG. Research has yield many interesting results involving not only clinical parameters but also molecular modulations. Detected changes pertain to amino acid, lipids, carbohydrates, or gut microbiota alterations. It proves that including bariatric surgery to metabolic surgery is warranted. However, many molecular modulations after those procedures remain unexplained. Therefore, application of metabolomics to study this field seems to be a proper solution. New findings can suggest new directions of surgery technics modifications, contribute to broadening knowledge about obesity and diseases related to it, and perhaps develop nonsurgical methods of treatment in the future.

  9. Life-course pathways to psychological distress: A cohort study

    OpenAIRE

    Von Stumm, S.; Deary, I. J.; Hagger-Johnson, G.

    2013-01-01

    Abstract: Objectives: Early life factors, like intelligence and socioeconomic status (SES), are associated with health outcomes in adulthood. Fitting comprehensive life-course models, we tested (1) the effect of childhood intelligence and SES, education and adulthood SES on psychological distress at midlife, and (2) compared alternative measurement specifications (reflective and formative) of SES. Design: Prospective cohort study (the Aberdeen Children of the 1950s). Setting: Aberdeen, Scotla...

  10. Data linkage in an established longitudinal cohort: the Western Australian Pregnancy Cohort (Raine) Study.

    Science.gov (United States)

    Mountain, Jenny A; Nyaradi, Anett; Oddy, Wendy H; Glauert, Rebecca A; de Klerk, Nick H; Straker, Leon M; Stanley, Fiona J

    2016-07-15

    The Western Australian Data Linkage System is one of a few comprehensive, population-based data linkage systems worldwide, creating links between information from different sources relating to the same individual, family, place or event, while maintaining privacy. The Raine Study is an established cohort study with more than 2000 currently active participants. Individual consent was obtained from participants for information in publicly held databases to be linked to their study data. A waiver of consent was granted where it was impracticable to obtain consent. Approvals to link the datasets were obtained from relevant ethics committees and data custodians. The Raine Study dataset was subsequently linked to academic testing data collected by the Western Australian Department of Education. Examination of diet and academic performance showed that children who were predominantly breastfed for at least 6 months scored higher academically at age 10 than children who were breastfed for less than 6 months. A further study found that better diet quality at ages 1, 2 and 3 years was associated with higher academic scores at ages 10 and 12 years. Examination of nutritional intake at 14 years of age found that a better dietary pattern was associated with higher academic performance. The detailed longitudinal data collected in the Raine Study allowed for adjustment for multiple covariates and confounders. Data linkage reduces the burden on cohort participants by providing additional information without the need to contact participants. It can give information on participants who have been lost to follow-up; provide or complement missing data; give the opportunity for validation studies comparing recall of participants with administrative records; increase the population sample of studies by adding control participants from the general population; and allow for the adjustment of multiple covariates and confounders. The Raine Study dataset is extensive and detailed, and can be

  11. Sexual satisfaction following bariatric surgery: A prospective exploratory study.

    Science.gov (United States)

    Ferrer-Márquez, Manuel; Pomares-Callejón, María Ángeles; Fernández-Agis, Inmaculada; Belda-Lozano, Ricardo; Vidaña-Márquez, Elisabet; Soriano-Maldonado, Alberto

    2017-11-01

    Bariatric surgery improves sexual function in obese individuals, although the extent to which sexual satisfaction is improved following surgery is unknown. The aims of this study were 1) to describe sexual satisfaction in severely/morbidly obese men and women candidates for bariatric surgery; 2) to assess the effects of bariatric surgery on sexual satisfaction at 12-months follow-up; and 3) to assess whether weight changes at follow-up following bariatric surgery are associated with changes in sexual satisfaction. We conducted a prospective observational study from February 2011 to June 2014. A total of 44 patients with severe/morbid obesity participated in the study. Sexual satisfaction was assessed (at baseline and 12-months follow-up) through the Index of Sexual Satisfaction (ISS) questionnaire. Of 44 patients who completed the ISS at baseline (mean age 40.3 [SD=9.4] years and BMI 46.9 [SD=6.2] kg/m 2 ), 17 were lost to follow-up. The baseline ISS total scores were 32.0 (SD=20.1) in women and 24.4 (SD=16.0) in men (P>0.05). The proportion of sexually satisfied men and women at baseline was 62.5% and 46.4%, respectively (P=0.360). At follow-up, sexual satisfaction improved significantly in women (average difference 13.7 units; P=0.032) but not in men (average difference 3.6 units; P=0.717). The percentage of women with sexual satisfaction problems was reduced by 33% at follow-up (P=0.038). A relatively large percentage of severely/morbidly obese women and men present clinically significant sexual satisfaction problems before undergoing bariatric surgery. Sexual satisfaction improves significantly 12 months following bariatric surgery, particularly in women. Copyright © 2017 AEC. Publicado por Elsevier España, S.L.U. All rights reserved.

  12. Intraoperative Death During Cervical Spinal Surgery: A Retrospective Multicenter Study.

    Science.gov (United States)

    Wang, Jeffrey C; Buser, Zorica; Fish, David E; Lord, Elizabeth L; Roe, Allison K; Chatterjee, Dhananjay; Gee, Erica L; Mayer, Erik N; Yanez, Marisa Y; McBride, Owen J; Cha, Peter I; Arnold, Paul M; Fehlings, Michael G; Mroz, Thomas E; Riew, K Daniel

    2017-04-01

    A retrospective multicenter study. Routine cervical spine surgeries are typically associated with low complication rates, but serious complications can occur. Intraoperative death is a very rare complication and there is no literature on its incidence. The purpose of this study was to determine the intraoperative mortality rates and associated risk factors in patients undergoing cervical spine surgery. Twenty-one surgical centers from the AOSpine North America Clinical Research Network participated in the study. Medical records of patients who received cervical spine surgery from January 1, 2005, to December 31, 2011, were reviewed to identify occurrence of intraoperative death. A total of 258 patients across 21 centers met the inclusion criteria. Most of the surgeries were done using the anterior approach (53.9%), followed by posterior (39.1%) and circumferential (7%). Average patient age was 57.1 ± 13.2 years, and there were more male patients (54.7% male and 45.3% female). There was no case of intraoperative death. Death during cervical spine surgery is a very rare complication. In our multicenter study, there was a 0% mortality rate. Using an adequate surgical approach for patient diagnosis and comorbidities may be the reason how the occurrence of this catastrophic adverse event was prevented in our patient population.

  13. Biomarkers in patients with Chronic Obstructive Pulmonary Disease in general practice: A prospective cohort study

    DEFF Research Database (Denmark)

    Waldorff, Frans Boch; Halling, Anders; Ledderer, Loni

    Introduction: Chronic Obstructive Pulmonary Disease (COPD) is a common chronic disease primarily treated in primary care. It is a complex and heterogeneous disease and the trajectory is difficult to predict. The overall aim of this study is to investigate predictors of the trajectory of COPD...... were a diagnosis of COPD (ICPC code R95-), age ≥ 40 years, Danish language speaking, no severe psychiatric or cognitive disease and ability to visit the GP surgery. Prevalent as well as incident patients diagnosed with COPD were eligible. Baseline data included a patient questionnaire and validated...... treated in primary care and to determine the added value of selected biomarkers such as microfibrillar-associated protein 4 (MFAP4) and surfactant protein D (SP-D). Methods: Prospective cohort study comprising COPD patients. A total of 38 Danish practices were included in the study. Criteria for inclusion...

  14. Recurrent Laryngeal Nerve Palsy After Cervical Spine Surgery: A Multicenter AOSpine Clinical Research Network Study.

    Science.gov (United States)

    Gokaslan, Ziya L; Bydon, Mohamad; De la Garza-Ramos, Rafael; Smith, Zachary A; Hsu, Wellington K; Qureshi, Sheeraz A; Cho, Samuel K; Baird, Evan O; Mroz, Thomas E; Fehlings, Michael; Arnold, Paul M; Riew, K Daniel

    2017-04-01

    Multicenter retrospective study. To investigate the risk of symptomatic recurrent laryngeal nerve palsy (RLNP) following cervical spine surgery, to examine risk factors for its development, and to report its treatment and outcomes. A multicenter study from 21 high-volume surgical centers from the AOSpine North America Clinical Research Network was performed. Each center screened for rare complications following cervical spine surgery, including RLNP. Patients were included if they underwent cervical spine surgery (levels from C2 to C7) between January 1, 2005 and December 31, 2011. Data were analyzed with regard to complication treatment and outcome. Cases were compared to a control group from the AOSpine CSM and CSM-I studies. Three centers reported 19 cases of RLNP from a cohort of 1345 patients. The reported incidence of RLNP ranged from 0.6% to 2.9% between these 3 centers. Fifteen patients (79%) in the RLNP group were approached from the left side. Ten patients (52.6%) required treatment for RLNP-6 required medical therapy (steroids), 1 interventional treatment (injection laryngoplasty), and 3 conservative therapy (speech therapy). When examining outcomes, 73.7% (14/19) of cases resolved completely, 15.8% (3/19) resolved with residual effects, and in 10.5% (2/19) of cases this could not be determined. In this multicenter study examining rare complications following cervical spine surgery, the risk of RLNP after cervical spine surgery ranged from 0.6% to 2.9% between centers. Though rare, it was found that 16% of patients may experience partial resolution with residual effects, and 74% resolve completely.

  15. Internationally adopted children with cleft lip and/or palate: A retrospective cohort study.

    Science.gov (United States)

    Werker, C L; de Wilde, H; Mink van der Molen, A B; Breugem, C C

    2017-12-01

    The treatment approach for internationally adopted children with cleft lip and/or palate differs from locally born children with cleft lip and/or palate. They are older at initial presentation, may have had treatment abroad of different quality, and are establishing new and still fragile relationships with their adoptive parents. The aim of this study was to describe the characteristics and initial care and treatment of this group. A retrospective cohort study was performed including all internationally adopted children with cleft lip and/or palate presenting to the cleft team outpatient clinic in the Wilhelmina Children's Hospital between January 1994 and December 2014. Medical records of all patients were reviewed; information concerning demographic characteristics, characteristics at initial presentation, and treatment were obtained. A total number of 132 adopted patients were included: 15% had cleft lip, 7% had cleft palate, and 78% had cleft lip and palate. The average age at the time of adoption was 26.5 months. In most cases, China was the country of origin. Seventy-eight percent had surgery in their country of origin, primarily lip repair. Fistulae in need of revision surgery were found in 8% of the patients. Pharyngoplasty was needed in 48% of the patients. No significant differences were found for mean age at adoption, gender, cleft type, and one- or two-stage palatal closure. Internationally adopted children with cleft lip and/or palate are a very diverse group of patients with challenging treatment. These children undergo surgery late and frequently need additional surgery. Copyright © 2017 British Association of Plastic, Reconstructive and Aesthetic Surgeons. Published by Elsevier Ltd. All rights reserved.

  16. Satisfaction with joint replacement in public versus private hospitals: a cohort study.

    Science.gov (United States)

    Adie, Sam; Dao, Alan; Harris, Ian A; Naylor, Justine M; Mittal, Rajat

    2012-09-01

    In Australia, the majority of total knee and hip replacement surgeries occur in the private sector. Outcome-based research needs to be inclusive of this sector if the findings are intended to reflect the broader picture. This study compares outcomes up to 1 year post knee and hip replacement between patients treated in the public and private sectors. A prospective, observational study was performed in four high-volume joint replacement centres: two public, two private. Experienced orthopaedic surgeons contributed via their public and private practices. Knee and hip patients were recruited preoperatively. Self-reported questionnaires were completed preoperatively and at 6 and 12 months post-operatively. The primary outcome was satisfaction with surgery. Secondary outcomes included Oxford score, and SF-36 physical and mental component summary scores. Regression modelling was performed to adjust for potential confounders. Three hundred and thirty-one patients (184 public, 147 private; 215 knees, 116 hips) were recruited, with 6- and 12-month follow-up rates of 95% and 89%, respectively. Satisfaction rates were high in both public and private patients (approximately 90%) at 6 and 12 months, but private patients were less likely to be satisfied after adjusting for the strong effect of patient expectation. For both hip and knee cohorts, no between-sector differences were found in either the magnitude or rate of improvement in Oxford score or quality of life post-operatively. Joint replacement outcomes are similar for patients treated in public and private hospitals. Surgeons should manage patient expectation prior to surgery, particularly in private patients. © 2012 The Authors. ANZ Journal of Surgery © 2012 Royal Australasian College of Surgeons.

  17. Patients' perceptions of waiting for bariatric surgery: a qualitative study.

    Science.gov (United States)

    Gregory, Deborah M; Temple Newhook, Julia; Twells, Laurie K

    2013-10-18

    In Canada waiting lists for bariatric surgery are common, with wait times on average > 5 years. The meaning of waiting for bariatric surgery from the patients' perspective must be understood if health care providers are to act as facilitators in promoting satisfaction with care and quality care outcomes. The aims of this study were to explore patients' perceptions of waiting for bariatric surgery, the meaning and experience of waiting, the psychosocial and behavioral impact of waiting for treatment and identify health care provider and health system supportive measures that could potentially improve the waiting experience. Twenty-one women and six men engaged in in-depth interviews that were digitally recorded, transcribed verbatim and analysed using a grounded theory approach to data collection and analysis between June 2011 and April 2012. The data were subjected to re-analysis to identify perceived health care provider and health system barriers to accessing bariatric surgery. Thematic analysis identified inequity as a barrier to accessing bariatric surgery. Three areas of perceived inequity were identified from participants' accounts: socioeconomic inequity, regional inequity, and inequity related to waitlist prioritization. Although excited about their acceptance as candidates for surgery, the waiting period was described as stressful, anxiety provoking, and frustrating. Anger was expressed towards the health care system for the long waiting times. Participants identified the importance of health care provider and health system supports during the waiting period. Recommendations on how to improve the waiting experience included periodic updates from the surgeon's office about their position on the wait list; a counselor who specializes in helping people going through this surgery, dietitian support and further information on what to expect after surgery, among others. Patients' perceptions of accessing and waiting for bariatric surgery are shaped by perceived

  18. Coronary artery bypass grafting and sensorineural hearing loss, a cohort study

    Directory of Open Access Journals (Sweden)

    Ashraf Omer

    2005-12-01

    Full Text Available Abstract Background Sudden sensorineural hearing loss is routinely encountered by the otologist. The etiology is varied and often identifiable. One of the relatively less frequent causes is surgery. Apart from being an established entity with otological surgeries, sensorineural hearing loss has also been known to occur after non-otological procedures under general anesthesia. Commonest amongst these procedures is cardiopulmonary bypass, an association that has long been recognized. However, despite the proposition of diverse hypotheses in the past, the pathophysiology remains unclear. Methods The study is a prospective matched cohort study that will be carried out in Aga Khan University Hospital, Karachi, Pakistan. Participants among exposed would include all those patients who would be undergoing coronary artery bypass surgery in the hospital who fall under the criteria for inclusion. Unexposed group would comprise of patients undergoing a non-bypass procedure of similar duration under the same type of anesthesia who meet the selection criteria. Both these groups will undergo audiometric testing at our hospital on three different occasions during the course of this study. Initially before the procedure to test the baseline hearing capacity; then one week after the procedure to assess any changes in hearing ability following the surgery; and finally a third audiogram at six weeks follow-up to assess further changes in any hearing deficits noted during the second phase of testing. Certain variables including the subjects' demographics and those concerning the procedure itself will be noted and used later for risk factors analysis. A detailed past medical and surgical history will also be obtained. Data analysis would include calculation of relative risk and significance of the results, by running the chi-square test. Other statistical tests like Fisher exact test may then be employed to facilitate data interpretation. Continuous scale may then be

  19. Counselling for burnout in Norwegian doctors: one year cohort study.

    Science.gov (United States)

    Rø, Karin E Isaksson; Gude, Tore; Tyssen, Reidar; Aasland, Olaf G

    2008-11-11

    To investigate levels and predictors of change in dimensions of burnout after an intervention for stressed doctors. Cohort study followed by self reported assessment at one year. Norwegian resource centre. 227 doctors participating in counselling intervention, 2003-5. Counselling (lasting one day (individual) or one week (group based)) aimed at motivating reflection on and acknowledgement of the doctors' situation and personal needs. Levels of burnout (Maslach burnout inventory) and predictors of reduction in emotional exhaustion investigated by linear regression. 185 doctors (81%, 88 men, 97 women) completed one year follow-up. The mean level of emotional exhaustion (scale 1-5) was significantly reduced from 3.00 (SD 0.94) to 2.53 (SD 0.76) (t=6.76, Ppsychotherapy, from 20% (36/182) to 53% (97/182). In the whole cohort, reduction in emotional exhaustion was independently associated with reduced number of work hours/week (beta=0.17, P=0.03), adjusted for sex, age, and personality dimensions. Among men "satisfaction with the intervention" (beta=0.25, P=0.04) independently predicted reduction in emotional exhaustion. A short term counselling intervention could contribute to reduction in emotional exhaustion in doctors. This was associated with reduced working hours for the whole cohort and, in men, was predicted by satisfaction with the intervention.

  20. Ambulatory laparoscopic minor hepatic surgery: Retrospective observational study.

    Science.gov (United States)

    Gaillard, M; Tranchart, H; Lainas, P; Tzanis, D; Franco, D; Dagher, I

    2015-11-01

    Over the last decade, laparoscopic hepatic surgery (LHS) has been increasingly performed throughout the world. Meanwhile, ambulatory surgery has been developed and implemented with the aims of improving patient satisfaction and reducing health care costs. The objective of this study was to report our preliminary experience with ambulatory minimally invasive LHS. Between 1999 and 2014, 172 patients underwent LHS at our institution, including 151 liver resections and 21 fenestrations of hepatic cysts. The consecutive series of highly selected patients who underwent ambulatory LHS were included in this study. Twenty patients underwent ambulatory LHS. Indications were liver cysts in 10 cases, liver angioma in 3 cases, focal nodular hyperplasia in 3 cases, and colorectal hepatic metastasis in 4 cases. The median operative time was 92 minutes (range: 50-240 minutes). The median blood loss was 35 mL (range: 20-150 mL). There were no postoperative complications or re-hospitalizations. All patients were hospitalized after surgery in our ambulatory surgery unit, and were discharged 5-7 hours after surgery. The median postoperative pain score at the time of discharge was 3 (visual analogue scale: 0-10; range: 0-4). The median quality-of-life score at the first postoperative visit was 8 (range: 6-10) and the median cosmetic satisfaction score was 8 (range: 7-10). This series shows that, in selected patients, ambulatory LHS is feasible and safe for minor hepatic procedures. Copyright © 2015 Elsevier Masson SAS. All rights reserved.

  1. Hyperemesis gravidarum and pregnancy outcomes in the Norwegian Mother and Child Cohort - a cohort study.

    Science.gov (United States)

    Vikanes, Åse V; Støer, Nathalie C; Magnus, Per; Grjibovski, Andrej M

    2013-09-03

    Hyperemesis gravidarum (HG) characterized by excessive nausea and vomiting in early pregnancy, is reported to be associated with increased risks for low birthweight (LBW), preterm birth (PTB), small-for-gestational-age (SGA) and perinatal death. Conflicting results in previous studies underline the necessity to study HG's potential effect on pregnancy outcomes using large cohorts with valid data on exposure and outcome measures, as well as potential confounders. This study aims to investigate associations between HG and adverse pregnancy outcomes using the Norwegian Mother and Child Cohort Study (MoBa). All singleton pregnancies in MoBa from 1998 to 2008 were included. Multivariable regression was used to estimate relative risks, approximated by odds ratios, for PTB, LBW, SGA and perinatal death. Linear regression was applied to assess differences in birthweight and gestational age for children born to women with and without HG. Potential confounders were adjusted for. Altogether, 814 out of 71,468 women (or 1.1%) had HG. In MoBa HG was not associated with PTB, LBW or SGA. Babies born to women with HG were born on average 1 day earlier than those born to women without HG; (-0.97 day (95% confidence intervals (CI): -1.80 - -0.15). There was no difference in birthweight when maternal weight gain was adjusted for; (23.42 grams (95% CI: -56.71 - 9.86). Babies born by women with HG had lower risk for having Apgar score < 7 after 1 minute (crude odds ratio was 0.64 (95% CI: 0.43 - 0.95)). No differences between the groups for Apgar score < 7 after 5 minutes were observed. Time-point for hospitalisation slightly increased differences in gestational age according to maternal HG status. HG was not associated with adverse pregnancy outcomes. Pregnancies complicated with HG had a slightly shorter gestational length. There was no difference in birth weight according to maternal HG-status. HG was associated with an almost 40% reduced risk for having Apgar score

  2. A STUDY ON INCISIONAL HERNIA FOLLOWING OBSTETRICS AND GYNAECOLOGICAL SURGERIES

    Directory of Open Access Journals (Sweden)

    Sumathi Ravikumar

    2016-12-01

    Full Text Available BACKGROUND The term ventral hernia encompasses incisional, epigastric, paraumbilical, spigelian and traumatic hernias. This is a hernia that protrudes through defect in an abdominal wound. With evolution of modern surgery and rapid increase in the number of abdominal operations performed, incisional hernias have risen in frequency and this hernia seems to be more common in females following obstetric and gynaecological surgeries. This study undertaken to stress the problem of incisional hernias in females occurring after obstetric and gynaecological surgeries. The aim of the study is to- 1. Study the incidence and prevalence of incisional hernias following obstetrics and gynaecological surgeries in KAPV Government Medical College, Tiruchirappalli. 2. Study aetiological factors for incisional hernia following obstetric and gynaecological surgeries. 3. Analyse preventive measures. 4. Analyse the problems in females, which led to incisional hernia. MATERIALS AND METHODS 178 cases of incisional hernia admitted in KAPV Government Medical College, Tiruchirappalli, during the period of 2 years from June 2014 to May 2016. The cases analysed according to age, previous history, type of incision, suture material used and associated comorbidities. RESULTS Maximum age affected is between 50 to 59 years and with 10 years of surgery. Incidence more following LSCS with midline incision. Incidence more with the usage of absorbable suture material. Postoperative wound infection and anaemia were leading associated factors for incisional hernia. CONCLUSION The incidence of incisional hernia is more common in females especially in obese and multiparous woman. The incidence is more after LSCS and puerperal sterilisation. Onlay reinforced mesh repair using Prolene mesh have given good results. Prolene mesh appears to be best tolerated by body tissues. The use of closed suction drain have significantly reduced the postoperative wound infection.

  3. Age, time period, and birth cohort differences in self-esteem: Reexamining a cohort-sequential longitudinal study.

    Science.gov (United States)

    Twenge, Jean M; Carter, Nathan T; Campbell, W Keith

    2017-05-01

    Orth, Trzesniewski, and Robins (2010) concluded that the nationally representative Americans' Changing Lives (ACL) cohort-sequential study demonstrated moderate to large age differences in self-esteem, and no birth cohort (generational) differences in the age trajectory. In a reanalysis of these data using 2 different statistical techniques, we find significant increases in self-esteem that could be attributed to birth cohort or time period. First, hierarchical linear modeling analyses with birth cohort as a continuous variable (vs. the multiple group formulation used by Orth et al.) find that birth cohort has a measurable influence on self-esteem through its interaction with age. Participants born in later years (e.g., 1960) were higher in self-esteem and were more likely to increase in self-esteem as they aged than participants born in earlier years (e.g., 1920). However, the estimated age trajectory up to age 60 is similar in Orth et al.'s results and in the results from our analyses including cohort. Second, comparing ACL respondents of the same age in 1986 versus 2002 (a time-lag design) yields significant birth cohort differences in self-esteem, with 2002 participants of the same age higher in self-esteem than those in 1986. Combined with some previous studies finding significant increases in self-esteem and positive self-views over time, these results suggest that cultural change in the form of cohort and time period cannot be ignored as influences in cross-sectional and longitudinal studies. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  4. How traumatic is breast cancer? Posttraumatic stress symptoms (PTSS) and risk factors for severe PTSS at 3 and 15 months after surgery in a nationwide cohort of Danish women treated for primary breast cancer

    DEFF Research Database (Denmark)

    O'Connor, Maja; Christensen, Søren; Jensen, Anders Bonde

    2011-01-01

    for primary breast cancer. Methods: Sixty-eight percent of all Danish women receiving surgery for primary breast cancer between October 2001 to March 2004 completed a questionnaire 3 months post-surgery (n=3343), which included the Impact of Event Scale (IES). Ninety-four percent of the disease-free women......The literature shows considerable between-study variation in the prevalence of Post-traumatic Stress Symptoms (PTSS) among women with breast cancer. Our aim was therefore to explore the prevalence of and risk factors for cancer-related PTSS in a nationwide inception cohort of women treated...... physical and mental illness, axillary lymph node involvement (>3), and reduced physical functioning at 3 months. Conclusion: The results confirm that receiving a breast cancer diagnosis can be a significant traumatic experience, and that many women experience persistent cancer-related PTSS. Low social...

  5. Fundamental principles of conducting a surgery economic analysis study.

    Science.gov (United States)

    Kotsis, Sandra V; Chung, Kevin C

    2010-02-01

    The use of economic evaluation in surgery is scarce. Economic evaluation is used even less so in plastic surgery, in which health-related quality of life is of particular importance. This article, part of a tutorial series on evidence-based medicine, focuses on the fundamental principles of conducting a surgery economic analysis. The authors include the essential aspects of conducting a surgical cost-utility analysis by considering perspectives, costs, outcomes, and utilities. The authors also describe and give examples of how to conduct the analyses (including calculating quality-adjusted life-years and discounting), how to interpret the results, and how to report the results. Although economic analyses are not simple to conduct, a well-conducted one provides many rewards, such as recommending the adoption of a more effective treatment. For comparing and interpreting economic analysis publications, it is important that all studies use consistent methodology and report the results in a similar manner.

  6. Surgical site infection after central venous catheter-related infection in cardiac surgery. Analysis of a cohort of 7557 patients.

    Science.gov (United States)

    Le Guillou, V; Tavolacci, M-P; Baste, J-M; Hubscher, C; Bedoit, E; Bessou, J-P; Litzler, P-Y

    2011-11-01

    The aim of this study was to establish the relationship between the occurrence of a surgical site infection (SSI) and the presence of a central venous catheter-related infection (CVCRI). The Department of Thoracic and Cardiovascular Surgery, University Hospital, Rouen, has carried out a prospective epidemiological survey of all nosocomial infections (pneumonia, SSI and CVCRI) since 1997. The study group included all consecutive patients who underwent cardiac surgery over a 10-year period from 1997 to 2007. A nested case-control study was conducted to identify the risk factors for SSI after CVCRI. Cases were patients with SSI after CVCRI and controls were randomized from patients who presented with CVCRI not followed by SSI. In total, 7557 patients were included and 133 SSIs (1.7%) were identified. The rate of superficial SSI was 0.7% [95% confidence interval (CI): 0.5-0.9] and of mediastinitis was 1.0% (95% CI: 0.8-1.2). Among the 133 cases of SSI, 12 (9.0%; 95% CI: 5.0-14.8) occurred after a CVCRI with identical micro-organisms. CVCRI [adjusted odds ratio (aOR): 5.2; 95% CI: 3.2-8.5], coronary artery bypass grafting (aOR: 2.9; 95% CI: 1.6-5.2), and obesity (aOR: 11.4; 95% CI: 1.0-130.1) were independent factors associated with SSI. The new finding of this study is that patients with CVCRI were 5.2 times more likely to develop SSI compared to patients without CVCRI. Copyright © 2011 The Healthcare Infection Society. Published by Elsevier Ltd. All rights reserved.

  7. The presentation, incidence, etiology, and treatment of surgical site infections after spinal surgery.

    NARCIS (Netherlands)

    Pull ter Gunne, A.F.; Mohamed, A.S.; Skolasky, R.L.; Laarhoven, C.J.H.M. van; Cohen, D.B.

    2010-01-01

    STUDY DESIGN: Descriptive, retrospective cohort analysis. OBJECTIVE: To evaluate the presentation, etiology, and treatment of surgical site infections (SSI) after spinal surgery. SUMMARY OF BACKGROUND DATA: SSI after spine surgery is frequently seen. Small case control studies have been published

  8. Possibilities and considerations when merging dietary data from the world's two largest pregnancy cohorts: the Danish National Birth Cohort and the Norwegian Mother and Child Cohort Study.

    Science.gov (United States)

    Olsen, Sjurdur F; Birgisdottir, Bryndis Eva; Halldorsson, Thorhallur I; Brantsaeter, Anne Lise; Haugen, Margaretha; Torjusen, Hanne; Petersen, Sesilje B; Strøm, Marin; Meltzer, Helle Margrete

    2014-11-01

    To elucidate the research possibilities when merging data on maternal diet from the Danish National Birth Cohort (DNBC) and the Norwegian Mother and Child Cohort Study (MoBa), through comparison of (i) the methodology used for dietary assessment and (ii) the estimated intake of selected food groups in the two cohorts. Qualitative and quantitative comparison of the two dietary databases. Two national prospective pregnancy cohorts. Denmark, Norway. Comparison of food intake using food frequency questionnaires (FFQs). The FFQs had overlapping time windows and a majority of the questions in the two FFQs were comparable. Calculation principles shared similar features, including the software used and use of global questions to calibrate intakes of different food groups. A total of 63 food groups were defined that could be compared across the two cohorts; these were further aggregated down to 31 broader groups. A comparison of food intakes (grams/d) showed 39, 74 and 141% lower daily intakes of fish, potatoes and rice, respectively, in DNBC vs. MoBa and 39, 54 and 65% higher daily intakes of milk, butter and potatoes in DNBC vs. MoBa. For most other food groups, differences in consumption data were below 20%. The two FFQs are to a large extent compatible and substantial differences in dietary habits were observed between the two cohorts. This may strengthen studies using pooled analysis to examine diet-disease relations. This is a conclusion of great importance given the colossal and costly task involved to establish each of these two cohorts. © 2014 Nordic Federation of Societies of Obstetrics and Gynecology.

  9. A Population-based Study Evaluating the Association between Surgery in Early Life and Child Development at Primary School Entry.

    Science.gov (United States)

    O'Leary, James D; Janus, Magdalena; Duku, Eric; Wijeysundera, Duminda N; To, Teresa; Li, Ping; Maynes, Jason T; Crawford, Mark W

    2016-08-01

    It is unclear whether exposure to surgery in early life has long-term adverse effects on child development. The authors aimed to investigate whether surgery in early childhood is associated with adverse effects on child development measured at primary school entry. The authors conducted a population-based cohort study in Ontario, Canada, by linking provincial health administrative databases to children's developmental outcomes measured by the Early Development Instrument (EDI). From a cohort of 188,557 children, 28,366 children who underwent surgery before EDI completion (age 5 to 6 yr) were matched to 55,910 unexposed children. The primary outcome was early developmental vulnerability, defined as any domain of the EDI in the lowest tenth percentile of the population. Subgroup analyses were performed based on age at first surgery (less than 2 and greater than or equal to 2 yr) and frequency of surgery. Early developmental vulnerability was increased in the exposed group (7,259/28,366; 25.6%) compared with the unexposed group (13,957/55,910; 25.0%), adjusted odds ratio, 1.05; 95% CI, 1.01 to 1.08. Children aged greater than or equal to 2 yr at the time of first surgery had increased odds of early developmental vulnerability compared with unexposed children (odds ratio, 1.05; 95% CI, 1.01 to 1.10), but children aged less than 2 yr at the time of first exposure were not at increased risk (odds ratio, 1.04; 95% CI, 0.98 to 1.10). There was no increase in odds of early developmental vulnerability with increasing frequency of exposure. Children who undergo surgery before primary school age are at increased risk of early developmental vulnerability, but the magnitude of the difference between exposed and unexposed children is small.

  10. Natural history and surgical treatment of chordoma: a retrospective cohort study

    Directory of Open Access Journals (Sweden)

    Samuel Aguiar Júnior

    Full Text Available CONTEXT AND OBJECTIVE: Chordoma is a rare tumor with a high risk of locoregional recurrences. The aim of this study was analyze the long-term results from treating this pathological condition.DESIGN AND SETTING: Cohort study in a single hospital in São Paulo, Brazil.METHODS: This was a retrospective cohort study on 42 patients with chordoma who were treated at Hospital A. C. Camargo between 1980 and 2006. The hospital records were reviewed and a descriptive analysis was performed on the clinical-pathological variables. Survival curves were estimated using the Kaplan-Meier method and these were compared using the log-rank test.RESULTS: Nineteen patients were men and 23 were women. Twenty-five tumors (59.5% were located in the sacrum, eleven (26.2% in the skull base and six (14.3% in the mobile spine. Surgery was performed on 28 patients (66.7%. The resection was considered to have negative margins in 14 cases and positive margins in 14 cases. The five-year overall survival (OS was 45.4%. For surgical patients, the five-year OS was 64.3% (82.2% for negative margins and 51.9% for positive margins. In the inoperable group, OS was 37.7% at 24 months and 0% at five years.CONCLUSION: Complete resection is related to local control and definitively has a positive impact on long-term survival.

  11. Comparative Effectiveness of Treatment Choices for Graves' Hyperthyroidism: A Historical Cohort Study.

    Science.gov (United States)

    Sundaresh, Vishnu; Brito, Juan P; Thapa, Prabin; Bahn, Rebecca S; Stan, Marius N

    2017-04-01

    The optimum therapy for Graves' disease (GD) is chosen following discussion between physician and patient regarding benefits, drawbacks, potential side effects, and logistics of the various treatment options, and it takes into account patient values and preferences. This cohort study aimed to provide useful information for this discussion regarding the usage, efficacy, and adverse-effect profile of radioactive iodine (RAI), antithyroid drugs (ATDs), and thyroidectomy in a tertiary healthcare facility. The cohort included consecutive adults diagnosed with GD from January 2002 to December 2008, who had complete follow-up after treatment at the Mayo Clinic, Rochester, Minnesota. Data on treatment modalities, disease relapses, and adverse effects were extracted manually and electronically from the electronic medical records. Kaplan-Meier analyses were performed to evaluate the association of treatments with relapse-free survival. The cohort included 720 patients with a mean age of 49.3 years followed for a mean of 3.3 years. Of these, 76.7% were women and 17.1% were smokers. The initial therapy was RAI in 75.4%, ATDs in 16.4%, and thyroidectomy in 2.6%, while 5.6% opted for observation. For the duration of follow-up, ATDs had an overall failure rate of 48.3% compared with 8% for RAI (hazard ratio = 7.6; p < 0.0001). Surgery had a 100% success rate; 80% of observed patients ultimately required therapy. Adverse effects developed in 43 (17.3%) patients treated with ATDs, most commonly dysgeusia (4.4%), rash (2.8%), nausea/gastric distress (2.4%), pruritus (1.6%), and urticaria (1.2%). Eight patients treated with RAI experienced radiation thyroiditis (1.2%). Thyroidectomy resulted in one (2.9%) hematoma and one (2.85%) superior laryngeal nerve damage, with no permanent hypocalcemia. RAI was the most commonly used modality within the cohort and demonstrated the best efficacy and safety profile. Surgery was also very effective and relatively safe in the hands of

  12. How does a combined pre-operative and post-operative rehabilitation program influence the outcome of ACL reconstruction 2 years after surgery? A comparison between patients in the Delaware-Oslo ACL Cohort and the Norwegian Knee Ligament Registry

    Science.gov (United States)

    Grindem, H.; Granan, LP.; Risberg, MA.; Engebretsen, L.; Snyder-Mackler, L.; Eitzen, I.

    2014-01-01

    Background Preoperative knee function is associated with successful postoperative outcome after ACL reconstruction (ACLR). However, there are few longer-term studies of patients who underwent progressive preoperative and postoperative rehabilitation compared to usual care Objectives To compare preoperative and 2 year postoperative patient-reported outcomes (PROs) in patients undergoing progressive preoperative and postoperative rehabilitation at a sports medicine clinic compared with usual care Methods We included patients aged 16–40 years undergoing primary unilateral ACLR. The preoperative and 2 year postoperative KOOS of 84 patients undergoing progressive pre- and postoperative rehabilitation at a sports medicine clinic (Norwegian Research Center for Active Rehabilitation [NAR] cohort) were compared with the scores of 2690 patients from the Norwegian Knee Ligament Registry (NKLR). The analyses were adjusted for sex, age, months from injury to surgery, and cartilage/meniscus injury at ACLR. Results The NAR cohort had significantly better preoperative KOOS in all subscales, with clinically relevant differences (>10 points) observed in KOOS Pain, ADL, Sports and Quality of Life. At 2 years, the NAR cohort still had significantly better KOOS with clinically relevant differences in KOOS Symptoms, Sports and Quality of Life. At 2 years, 85.7–94.0 % of the patients in the NAR cohort scored within the normative range of the different KOOS subscales, compared to 51.4–75.8 % of the patients in the NKLR cohort. Conclusion Patients in a prospective cohort who underwent progressive pre- and postoperative rehabilitation at a sports medicine clinic showed superior patient-reported outcomes both preoperatively and 2 year postoperatively compared to patients in the Norwegian Knee Ligament Registry who received usual care. PMID:25351782

  13. Epidemiological study of venous thromboembolism in a big Danish cohort

    DEFF Research Database (Denmark)

    Severinsen, Marianne Tang; Kristensen, Søren Risom; Overvad, Kim

    Introduction: Epidemiological data on venous thromboembolism (VT), i.e. pulmonary emboli (PE) and deep venous thrombosis (DVT) are sparse. We have examined VT-diagnoses registered in a big Danish Cohort study.  Methods: All first-time VT diagnoses in The Danish National Patient Register were...... were probable cases (1.7%) whereas for 449 (41.6%) the diagnosis could be excluded. The incidence rate was 1 per 1000 personyears. Out of the 632 cases 60% were DVT and 40% PE. 315 VT were considered idiopathic (49.8%), 311 were secondary (49.2%) and 15 were unclassifiable. 122 patients had cancer, 87...

  14. Serum YKL-40 and gestational diabetes - an observational cohort study

    DEFF Research Database (Denmark)

    Gybel-Brask, Dorte; Johansen, Julia S; Christiansen, Ib J

    2016-01-01

    To examine serum YKL-40 in women developing gestational diabetes mellitus (GDM). In the present large observational cohort study of 1179 pregnant women, we determined serum YKL-40 four times during pregnancy (at gestational age 12, 20, 25, and 32 weeks). Pregnancy outcome was obtained from medical...... records. Sixty-eight women (5.8%) developed GDM. Serum YKL-40 increased from gestational age (GA) 12 weeks and the following weeks in the women who developed GDM and was independent of BMI, parity, and maternal age (OR = 2.69, 95% CI: 1.45-5.00, p = 0.002). No association was found between serum YKL-40...

  15. Adjuvant radiotherapy after breast conserving surgery - a comparative effectiveness research study.

    Science.gov (United States)

    Corradini, Stefanie; Niyazi, Maximilian; Niemoeller, Olivier M; Li, Minglun; Roeder, Falk; Eckel, Renate; Schubert-Fritschle, Gabriele; Scheithauer, Heike R; Harbeck, Nadia; Engel, Jutta; Belka, Claus

    2015-01-01

    The purpose of this retrospective outcome study was to validate the effectiveness of postoperative radiotherapy in breast conserving therapy (BCT) and to evaluate possible causes for omission of radiotherapy after breast conserving surgery (BCS) in a non-trial population. Data were provided by the population-based Munich Cancer Registry. The study included epidemiological data of 30.811 patients diagnosed with breast cancer from 1998 to 2012. The effect of omitting radiotherapy was analysed using Kaplan-Meier-estimates and Cox proportional hazard regression. Variables predicting omission of radiotherapy were analysed using multivariate logistic regression. Use of postoperative radiotherapy after BCS was associated with significant improvements in local control and survival. 10-year loco-regional recurrence-free-survival was 90.8% with postoperative radiotherapy vs. 77.6% with surgery alone (pstudy shows a decrease in local control and a survival disadvantage if postoperative radiotherapy after breast conserving surgery is omitted in an unselected cohort of primary breast cancer patients. Due to its epidemiological nature, it cannot answer the question in whom postoperative radiotherapy can be safely omitted. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

  16. Timing of drainage tube removal after thyroid surgery: a retrospective study.

    Science.gov (United States)

    Minami, Shigeki; Sakimura, Chika; Hayashida, Naomi; Yamanouchi, Kosho; Kuroki, Tamotsu; Eguchi, Susumu

    2014-01-01

    The aim of this study was to evaluate the chronological changes in the amount of drainage fluid after thyroidectomy, and to establish standard indications for the drain to be removed. We examined a cohort of 249 patients undergoing thyroid surgery. The patients were divided into four groups: a Graves' group, a non-dissection group, a central-dissection group and a lateral-dissection group. The amount of drainage was measured every 6 h, and the drain was removed postoperatively when the drainage decreased in amount and contained serous fluid after a meal. In all four groups, the most drainage occurred in the first 6 h after surgery. The total amount of drainage from the operation to the time of drain removal was significantly higher in Graves' group and in the lateral-dissection group than in the other two groups. The median wound drainage significantly decreased from 12 to 18 h after surgery in all four groups. In the lateral-dissection group, the wound drainage significantly decreased again in the first 24-30 h. The findings of this study suggest that drains can be removed postoperatively if the drainage was less than 15 mL during a 6-h period and contain serous fluid.

  17. Cohort Profile: the Avon Longitudinal Study of Parents and Children: ALSPAC mothers cohort.

    Science.gov (United States)

    Fraser, Abigail; Macdonald-Wallis, Corrie; Tilling, Kate; Boyd, Andy; Golding, Jean; Davey Smith, George; Henderson, John; Macleod, John; Molloy, Lynn; Ness, Andy; Ring, Susan; Nelson, Scott M; Lawlor, Debbie A

    2013-02-01

    Summary The Avon Longitudinal Study of Children and Parents (ALSPAC) was established to understand how genetic and environmental characteristics influence health and development in parents and children. All pregnant women resident in a defined area in the South West of England, with an expected date of delivery between 1st April 1991 and 31st December 1992, were eligible and 13761 women (contributing 13867 pregnancies) were recruited. These women have been followed over the last 19-22 years and have completed up to 20 questionnaires, have had detailed data abstracted from their medical records and have information on any cancer diagnoses and deaths through record linkage. A follow-up assessment was completed 17-18 years postnatal at which anthropometry, blood pressure, fat, lean and bone mass and carotid intima media thickness were assessed, and a fasting blood sample taken. The second follow-up clinic, which additionally measures cognitive function, physical capability, physical activity (with accelerometer) and wrist bone architecture, is underway and two further assessments with similar measurements will take place over the next 5 years. There is a detailed biobank that includes DNA, with genome-wide data available on >10000, stored serum and plasma taken repeatedly since pregnancy and other samples; a wide range of data on completed biospecimen assays are available. Details of how to access these data are provided in this cohort profile.

  18. Weight loss in orthognathic surgery: a clinical study.

    Science.gov (United States)

    Hammond, Douglas; Williams, Rhodri W; Juj, Kiranjit; O'Connell, Susan; Isherwood, Grant; Hammond, Nichola

    2015-09-01

    To analyse weight change, body composition change and Body Mass Index change in patients undergoing orthognathic surgery. A service evaluation was undertaken in orthognathic patients pre-operatively and at 4 weeks post-surgery. Queen Elizabeth Hospital Birmingham outpatient department. Thirty-one patients scheduled for single- or two-jaw orthognathic surgery and rigid internal fixation. Immediately pre-operatively and at 4 weeks post-surgery the following information was gathered: (1) patient height; (2) patient weight (kg); (3) Patient Body Mass Index; and (4) patient body fat percentage. In the 4-week post-operative period, the average weight loss was -4·96 kg (range: -9·6 to +3·0 kg), with a body fat reduction of -3·07% (range: -5·80% to +2·30%) and an average reduction in Body Mass Index of -1·63 (range: -3·4 to +0·8). There was no statistically significant difference in weight loss (P = 0·1562) or body fat composition change (P = 0·2391) between single- or two-jaw surgery. There was no statistically significant difference in weight loss (P = 0·4858) or body fat composition change (P = 0·5321) between male and female patients. Weight loss observed was similar to that reported in studies using inter-maxillary fixation. Closer psychological and dietetic support is needed for patients who have a low normal or underweight Body Mass Index. Better and more bespoke tailored Oral Nutritional Supplementation must be provided for all orthognathic surgery patients to potentially reduce this significant weight loss.

  19. Study design of DIACORE (DIAbetes COhoRtE – a cohort study of patients with diabetes mellitus type 2

    Directory of Open Access Journals (Sweden)

    Dörhöfer Lena

    2013-02-01

    Full Text Available Abstract Background Diabetes mellitus type 2 (DM2 is highly associated with increased risk for chronic kidney disease (CKD, end stage renal disease (ESRD and cardiovascular morbidity. Epidemiological and genetic studies generate hypotheses for innovative strategies in DM2 management by unravelling novel mechanisms of diabetes complications, which is essential for future intervention trials. We have thus initiated the DIAbetes COhoRtE study (DIACORE. Methods DIACORE is a prospective cohort study aiming to recruit 6000 patients of self-reported Caucasian ethnicity with prevalent DM2 for at least 10 years of follow-up. Study visits are performed in University-based recruiting clinics in Germany using standard operating procedures. All prevalent DM2 patients in outpatient clinics surrounding the recruiting centers are invited to participate. At baseline and at each 2-year follow-up examination, patients are subjected to a core phenotyping protocol. This includes a standardized online questionnaire and physical examination to determine incident micro- and macrovascular DM2 complications, malignancy and hospitalization, with a primary focus on renal events. Confirmatory outcome information is requested from patient records. Blood samples are obtained for a centrally analyzed standard laboratory panel and for biobanking of aliquots of serum, plasma, urine, mRNA and DNA for future scientific use. A subset of the cohort is subjected to extended phenotyping, e.g. sleep apnea screening, skin autofluorescence measurement, non-mydriatic retinal photography and non-invasive determination of arterial stiffness. Discussion DIACORE will enable the prospective evaluation of factors involved in DM2 complication pathogenesis using high-throughput technologies in biosamples and genetic epidemiological studies.

  20. Short- and long-term outcomes of laparoscopic surgery vs open surgery for transverse colon cancer: a retrospective multicenter study

    Directory of Open Access Journals (Sweden)

    Kim JW

    2016-04-01

    Full Text Available Jong Wan Kim,1 Jeong Yeon Kim,1 Byung Mo Kang,2 Bong Hwa Lee,3 Byung Chun Kim,4 Jun Ho Park5 1Department of Surgery, Dongtan Sacred Heart Hospital, College of Medicine, Hallym University, Hwaseong Si, 2Department of Surgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chuncheon Si, 3Department of Surgery, Hallym Sacred Heart Hospital, College of Medicine, Hallym University, Anyang Si, 4Department of Surgery, Kangnam Sacred Heart Hospital, College of Medicine, Hallym University, Seoul, 5Department of Surgery, Kangdong Sacred Heart Hospital, College of Medicine, Hallym University, Seoul, Republic of Korea Purpose: The purpose of the present study was to compare the perioperative and oncologic outcomes between laparoscopic surgery and open surgery for transverse colon cancer.Patients and methods: We conducted a retrospective review of patients who underwent surgery for transverse colon cancer at six Hallym University-affiliated hospitals between January 2005 and June 2015. The perioperative outcomes and oncologic outcomes were compared between laparoscopic and open surgery.Results: Of 226 patients with transverse colon cancer, 103 underwent laparoscopic surgery and 123 underwent open surgery. There were no differences in the patient characteristics between the two groups. Regarding perioperative outcomes, the operation time was significantly longer in the laparoscopic group than in the open group (267.3 vs 172.7 minutes, P<0.001, but the time to soft food intake (6.0 vs 6.6 days, P=0.036 and the postoperative hospital stay (13.7 vs 15.7 days, P=0.018 were shorter in the laparoscopic group. The number of harvested lymph nodes was lower in the laparoscopic group than in the open group (20.3 vs 24.3, P<0.001. The 5-year overall survival (90.8% vs 88.6%, P=0.540 and disease-free survival (86.1% vs 78.9%, P=0.201 rates were similar in both groups.Conclusion: The present study showed that laparoscopic surgery is associated

  1. Descriptive epidemiology of the Multicenter ACL Revision Study (MARS) cohort.

    Science.gov (United States)

    Wright, Rick W; Huston, Laura J; Spindler, Kurt P; Dunn, Warren R; Haas, Amanda K; Allen, Christina R; Cooper, Daniel E; DeBerardino, Thomas M; Lantz, Brett Brick A; Mann, Barton J; Stuart, Michael J

    2010-10-01

    Revision anterior cruciate ligament (ACL) reconstruction has worse outcomes than primary reconstructions. Predictors for these worse outcomes are not known. The Multicenter ACL Revision Study (MARS) Group was developed to perform a multisurgeon, multicenter prospective longitudinal study to obtain sufficient subjects to allow multivariable analysis to determine predictors of clinical outcome. To describe the formation of MARS and provide descriptive analysis of patient demographics and clinical features for the initial 460 enrolled patients to date in this prospective cohort. Cross-sectional study; Level of evidence, 2. After training and institutional review board approval, surgeons began enrolling patients undergoing revision ACL reconstruction, recording patient demographics, previous ACL reconstruction methods, intra-articular injuries, and current revision techniques. Enrolled subjects completed a questionnaire consisting of validated patient-based outcome measures. As of April 1, 2009, 87 surgeons have enrolled a total of 460 patients (57% men; median age, 26 years). For 89%, the reconstruction was the first revision. Mode of failure as deemed by the revising surgeon was traumatic (32%), technical (24%), biologic (7%), combination (37%), infection (MARS Group has been able to quickly accumulate the largest revision ACL reconstruction cohort reported to date. Traumatic reinjury is deemed by surgeons to be the most common single mode of failure, but a combination of factors represents the most common mode of failure. Allograft graft choice is more common in the revision setting than autograft. Concomitant knee injury is extremely common in this population.

  2. Vegetarianism, low meat consumption and the risk of colorectal cancer in a population based cohort study

    NARCIS (Netherlands)

    Gilsing, A.M.J.; Schouten, L.J.; Goldbohm, R.A.; Dagnelie, P.C.; Brandt, P.A. van den; Weijenberg, M.P.

    2015-01-01

    To study how a vegetarian or low meat diet influences the risk of colorectal cancer compared to a high meat diet, and to assess the explanatory role of factors associated with these diets. In the Netherlands Cohort Study – Meat Investigation Cohort (NLCS-MIC) (cohort of 10,210 individuals including

  3. The incidence and risk factors of meningitis after major craniotomy in China: a retrospective cohort study.

    Directory of Open Access Journals (Sweden)

    Chen Chen

    Full Text Available BACKGROUND: Meningitis after neurosurgery can result in severe morbidity and high mortality. Incidence varies among regions and limited data are focused on meningitis after major craniotomy. AIM: This retrospective cohort study aimed to determine the incidence, risk factors and microbiological spectrum of postcraniotomy meningitis in a large clinical center of Neurosurgery in China. METHODS: Patients who underwent neurosurgeries at the Department of Neurosurgery in Huashan Hospital, the largest neurosurgery center in Asia and the Pacific, between 1st January and 31st December, 2008 were selected. Individuals with only shunts, burr holes, stereotactic surgery, transsphenoidal or spinal surgery were excluded. The complete medical records of each case were reviewed, and data on risk factors were extracted and evaluated for meningitis. RESULTS: A total of 65 meningitides were identified among 755 cases in the study, with an incidence of 8.60%. The risk of meningitis was increased by the presence of diabetes mellitus (odds ratio [OR], 6.27; P = 0.009, the use of external ventricular drainage (OR, 4.30; P = 0.003 and the use of lumbar drainage (OR, 17.23; P<0.001. The isolated microorganisms included Acinetobacter baumannii, Enterococcus sp, Streptococcus intermedius and Klebsiella pneumonia. CONCLUSIONS: Meningitis remains an important source of morbidity and mortality after major craniotomy. Diabetic patients or those with cerebral spinal fluid shunts carry significant high risk of infection. Thus, identification of the risk factors as soon as possible will help physicians to improve patient care.

  4. The incidence and risk factors of meningitis after major craniotomy in China: a retrospective cohort study.

    Science.gov (United States)

    Chen, Chen; Zhang, Bingyan; Yu, Shenglei; Sun, Feng; Ruan, Qiaoling; Zhang, Wenhong; Shao, Lingyun; Chen, Shu

    2014-01-01

    Meningitis after neurosurgery can result in severe morbidity and high mortality. Incidence varies among regions and limited data are focused on meningitis after major craniotomy. This retrospective cohort study aimed to determine the incidence, risk factors and microbiological spectrum of postcraniotomy meningitis in a large clinical center of Neurosurgery in China. Patients who underwent neurosurgeries at the Department of Neurosurgery in Huashan Hospital, the largest neurosurgery center in Asia and the Pacific, between 1st January and 31st December, 2008 were selected. Individuals with only shunts, burr holes, stereotactic surgery, transsphenoidal or spinal surgery were excluded. The complete medical records of each case were reviewed, and data on risk factors were extracted and evaluated for meningitis. A total of 65 meningitides were identified among 755 cases in the study, with an incidence of 8.60%. The risk of meningitis was increased by the presence of diabetes mellitus (odds ratio [OR], 6.27; P = 0.009), the use of external ventricular drainage (OR, 4.30; P = 0.003) and the use of lumbar drainage (OR, 17.23; PMeningitis remains an important source of morbidity and mortality after major craniotomy. Diabetic patients or those with cerebral spinal fluid shunts carry significant high risk of infection. Thus, identification of the risk factors as soon as possible will help physicians to improve patient care.

  5. Conversion of laparoscopic surgery for perforated peptic ulcer: a single-center study.

    Science.gov (United States)

    Zimmermann, Markus; Hoffmann, Martin; Laubert, Tilman; Jung, Carlo; Bruch, Hans-Peter; Schloericke, Erik

    2015-11-01

    A perforated peptic ulcer can be managed laparoscopically in selected patients. The purpose of this study was to evaluate whether conversion of emergency laparoscopy is inferior to primary median laparotomy in terms of postoperative morbidity and mortality. We analyzed patients who underwent laparoscopic or open surgery for a perforated peptic ulcer at the Department of Surgery, University of Schleswig-Holstein, Campus Luebeck between January, 1996 and December, 2010. Perforations were graded according to the Boey classification, a preoperative risk-scoring system. Conversion to laparotomy was necessary in 20 of the 45 patients who underwent laparoscopic surgery (CG); therefore, laparoscopic operations were completed in 25 patients (LG). The third patient cohort comprised 139 patients who underwent primary laparotomy (OG). Overall minor morbidity was significantly lower (p = 0.048) in the LG patients than in the OG patients, whereas no significant differences were found in major morbidity and mortality, particularly between the OG and CG. Patients' suitability for laparoscopic management should be decided on according to Boey's clinical scoring system. Our findings demonstrated that conversion from laparoscopy to laparotomy was not associated with elevated postoperative morbidity or mortality versus initial laparotomy. Therefore, emergency operations may be commenced laparoscopically in selected patients, especially considering the postoperative advantages of this approach.

  6. Antithyroid Drugs and Congenital Malformations: A Nationwide Korean Cohort Study.

    Science.gov (United States)

    Seo, Gi Hyeon; Kim, Tae Hyuk; Chung, Jae Hoon

    2018-03-20

    Untreated or insufficiently treated Graves disease in pregnancy may pose risks to both mother and fetus. Antithyroid drugs (ATDs) are the treatment mainstay, but the potential teratogenic effect of these drugs has prompted clinicians to question the safe management of this vulnerable population. To examine the association between maternal prescriptions for ATDs and congenital malformations in live births. Nationwide cohort study. Korean National Health Insurance database. A cohort of 2 886 970 completed pregnancies linked to live-born infants in 2 210 253 women between 2008 and 2014. Maternal prescriptions for ATDs in the first trimester. The risk for overall and organ-specific congenital malformations in offspring, with logistic regression models used to control for potential confounders. 12 891 pregnancies (0.45%) were exposed to ATDs during the first trimester. The prevalence of malformations in exposed offspring was 7.27%, compared with 5.94% in offspring of women who were not prescribed ATDs during pregnancy (P 495 mg) during the first trimester was associated with an increased risk for malformations compared with a low dose (1 to 126 mg) (adjusted odds ratio, 1.87 [CI, 1.06 to 3.30]). The study used a prescription claims database to assess ATD exposure. Exposure to ATDs during the first trimester was associated with increased risk for congenital malformations, particularly for pregnancies in which women received prescriptions for MMI or both ATDs. None.

  7. [Bile leakage after liver resection: A retrospective cohort study].

    Science.gov (United States)

    Menclová, K; Bělina, F; Pudil, J; Langer, D; Ryska, M

    2015-12-01

    Many previous reports have focused on bile leakage after liver resection. Despite the improvements in surgical techniques and perioperative care the incidence of this complication rather keeps increasing. A number of predictive factors have been analyzed. There is still no consensus regarding their influence on the formation of bile leakage. The objective of our analysis was to evaluate the incidence of bile leakage, its impact on mortality and duration of hospitalization at our department. At the same time, we conducted an analysis of known predictive factors. The authors present a retrospective review of the set of 146 patients who underwent liver resection at the Department of Surgery of the 2nd Faculty of Medicine of the Charles University and Central Military Hospital Prague, performed between 20102013. We used the current ISGLS (International Study Group of Liver Surgery) classification to evaluate the bile leakage. The severity of this complication was determined according to the Clavien-Dindo classification system. Statistical significance of the predictive factors was determined using Fishers exact test and Students t-test. The incidence of bile leakage was 21%. According to ISGLS classification the A, B, and C rates were 6.5%, 61.2%, and 32.3%, respectively. The severity of bile leakage according to the Clavien-Dindo classification system - I-II, IIIa, IIIb, IV and V rates were 19.3%, 42%, 9.7%, 9.7%, and 19.3%, respectively. We determined the following predictive factors as statistically significant: surgery for malignancy (pBile leakage significantly prolonged hospitalization time (pbile leakage the perioperative mortality was 23 times higher (pBile leakage is one of the most serious complications of liver surgery. Most of the risk factors are not easily controllable and there is no clear consensus on their influence. Intraoperative leak tests could probably reduce the incidence of bile leakage. In the future, further studies will be required to improve

  8. Visual and Refractive Outcomes in Manual versus Femtosecond Laser-Assisted Cataract Surgery: A Single-Center Retrospective Cohort Analysis of 1838 Eyes.

    Science.gov (United States)

    Berk, Thomas A; Schlenker, Matthew B; Campos-Möller, Xavier; Pereira, Austin M; Ahmed, Iqbal Ike K

    2018-03-06

    Femtosecond laser-assisted cataract surgery (FLACS) has emerged as an alternative to manual cataract surgery (MCS) for corneal incision and capsulorhexis creation, as well as nuclear fragmentation. This study compares postoperative refractive and visual outcomes in eyes receiving MCS or FLACS. Single-center, comparative, retrospective cohort analysis. Consecutive eyes receiving FLACS and MCS from July 1, 2012, to July 31, 2015, at a single tertiary care center. Demographic data, ocular history, preoperative measurements and biometry, and postoperative surgical results were retrospectively obtained and statistically analyzed using a generalized linear mixed model adjusting for differences in baseline characteristics and within-patient correlation. A 2-tailed P value <0.05 was considered statistically significant throughout the study. Percentage of eyes achieving absolute error (AE) ≤0.5 diopters (D). Secondary outcomes included percentage of eyes with AE ≤0.25 D and ≤1.0 D, and percentage of distance-targeted eyes achieving uncorrected distance visual acuity (UDVA) of 20/20 or better, 20/25 or better, and 20/30 or better. A total of 883 eyes received MCS and 955 received FLACS among 1089 patients. Some 82.6% of FLACS eyes and 78.8% of MCS eyes had ≤0.5 D of AE at 3 weeks, representing an adjusted odds ratio (OR) of 1.28 (95% confidence interval [CI], 0.98-1.66) of FLACS relative to MCS being within target. Some 97.1% of FLACS and 97.2% of MCS eyes had ≤1.0 D of AE (OR, 0.96; 95% CI, 0.57-1.60) and 49.3% of FLACS and 46.3% of MCS eyes, ≤0.25 D of AE (OR, 1.13; 95% CI, 0.91-1.39). Factors predictive of a favorable refractive outcome included axial length between 22 and 24.8 mm, receiving a toric intraocular lens, less preoperative cylinder, and greater preoperative average keratometry. There was no significant difference in the percentage of patients targeted for distance who achieved UDVA of 20/20 or better (P = 0.30), 20/25 or better (P = 0.06), or 20

  9. Psoriasis carries an increased risk of venous thromboembolism: a danish nationwide cohort study

    DEFF Research Database (Denmark)

    Ahlehoff, Ole; Gislason, Gunnar Hilmar; Lindhardsen, Jesper

    2011-01-01

    . In an unselected nationwide cohort, we used multivariate Poisson regression models controlling for age, gender, comorbidity, concomitant medication, socio-economic data, and calendar year, to assess the risk of VTE associated with psoriasis. A total of 35,138 patients with mild and 3,526 patients with severe...... psoriasis were identified and compared with 4,126,075 controls. Patients with psoriasis had higher incidence rates per 1000 person-years of VTE than controls (1.29, 1.92, and 3.20 for controls, mild psoriasis, and severe psoriasis, respectively). The rate ratio (RR) of VTE was elevated in all patients...... with psoriasis with RR 1.35 (95% confidence interval [CI] 1.21–1.49) and RR 2.06 (CI 1.63–2.61) for mild and severe psoriasis, respectively. Exclusion of patients with malignancies, and censoring of patients undergoing surgery did not alter the results. Conclusion This nationwide cohort study indicates...

  10. The mental wellbeing of current and retired professional cricketers: an observational prospective cohort study.

    Science.gov (United States)

    Schuring, Nannet; Kerkhoffs, Gino; Gray, Janine; Gouttebarge, Vincent

    2017-11-01

    Scientific knowledge about symptoms of common mental disorders in professional cricket is non-existent. Consequently, the aims of the study were to determine the prevalence and the 6 months incidence of symptoms of common mental disorders (CMD: distress, anxiety/depression, sleep disturbance, adverse alcohol use) among current and former professional cricketers and to explore the association of potential stressors (significant injury, surgery, adverse life events, career dissatisfaction) and CMD. An observational prospective cohort study with a follow-up period of 6 months was conducted among current and former professional cricketers from South Africa. Using validated questionnaires to assess symptoms of common mental disorders as well as several stressors, an electronic questionnaire was set up and distributed by the South African Cricketers Association (SACA). A total of 116 participants enrolled at baseline (overall response rate of 33%) and 76 of those participants completed the 6 month follow-up (follow up rate of 66%). The prevalence of symptoms of CMD in current professional cricketers was 38% for distress, 38% for sleep disturbance, 37% for anxiety/depression and 26% for adverse alcohol use. Among former professional cricketers, baseline prevalence as was 26% for distress, 24% for anxiety/depression, 21% for sleep disturbance and 22% for adverse alcohol use. Career dissatisfaction led to an increased risk of distress, anxiety/depression and sleep disturbance in current professional cricketers. Surgeries and adverse life events led to an increase in reported symptoms of distress and anxiety/depression in current professional cricketers. It was concluded that symptoms of CMD are prevalent in both current and former professional cricketers and the association with surgery, adverse life events and cricket career dissatisfaction may provide some insight into possible mechanisms.

  11. Cohort profile

    DEFF Research Database (Denmark)

    Maret-Ouda, John; Wahlin, Karl; Artama, Miia

    2017-01-01

    Purpose: To describe a newly created all-Nordic cohort of patients with gastro-oesophageal reflux disease (GORD), entitled the Nordic Antireflux Surgery Cohort (NordASCo), which will be used to compare participants having undergone antireflux surgery with those who have not regarding risk...... age at primary antireflux surgery ranged from 47 to 52 years in the different countries. The coding practices of GORD seem to have differed between the Nordic countries. Future plans: The NordASCo will initially be used to analyse the risk of developing known or potential GORD-related cancers, that is......, tumours of the oesophagus, stomach, larynx, pharynx and lung, and to evaluate the mortality in the short-term and long-term perspectives. Additionally, the cohort will be used to evaluate the risk of non-malignant respiratory conditions that might be caused by aspiration of gastric contents....

  12. Assessing the accuracy of algorithm-derived cardiorespiratory fitness in surgical patients: a prospective cohort study.

    Science.gov (United States)

    Hammal, Fadi; Quaife, Tanis; Purich, Kieran; Haennel, Robert; Gragasin, Ferrante S; Martin-Feeney, Daniella San; Finegan, Barry A

    2017-04-01

    To determine if a non-exercise algorithm-derived assessment of cardiorespiratory fitness (CRF A ) accurately predicted estimated values obtained using a six-minute walk test (CRF 6MWD ) and the Duke Activity Status Index (CRF DASI ). Following research ethics board approval, an observational cohort study was conducted in selected, consenting patients undergoing elective surgery. Participants completed questionnaires assessing their self-reported exercise capacity. Their height, weight, waist circumference, and vital signs were measured. A six-minute walk test was performed twice with a 45-min rest interval between tests. The correlation between CRF A and both CRF 6MWD and CRF DASI was determined. Two hundred forty-two participants were included. Mean age was 62 (range 45-88 yr); 150 (62%) were male, 87 (36%) self-reported walking or jogging > 16 km per week, and 49 (20%) were current smokers. The CRF A and CRF 6MWD were highly correlated (Pearson r = 0.878; P 427 m in the six-minute walk test, CRF A , CRF 6MWD , and CRF DASI were equivalent. A non-exercise algorithm can estimate cardiorespiratory fitness in patients presenting for elective surgery. The variables required to compute CRF A can be obtained in a clinic setting without the need to engage in formal exercise testing. Further evaluation of CRF A as a predictor of long-term outcome in patients is warranted.

  13. Birth order and mortality: a population-based cohort study.

    Science.gov (United States)

    Barclay, Kieron; Kolk, Martin

    2015-04-01

    This study uses Swedish population register data to investigate the relationship between birth order and mortality at ages 30 to 69 for Swedish cohorts born between 1938 and 1960, using a within-family comparison. The main analyses are conducted with discrete-time survival analysis using a within-family comparison, and the estimates are adjusted for age, mother's age at the time of birth, and cohort. Focusing on sibships ranging in size from two to six, we find that mortality risk in adulthood increases with later birth order. The results show that the relative effect of birth order is greater among women than among men. This pattern is consistent for all the major causes of death but is particularly pronounced for mortality attributable to cancers of the respiratory system and to external causes. Further analyses in which we adjust for adult socioeconomic status and adult educational attainment suggest that social pathways only mediate the relationship between birth order and mortality risk in adulthood to a limited degree.

  14. Harmonising measures of knee and hip osteoarthritis in population-based cohort studies

    DEFF Research Database (Denmark)

    Leyland, K M; Gates, L S; Nevitt, M

    2018-01-01

    OBJECTIVE: Population-based osteoarthritis (OA) cohorts provide vital data on risk factors and outcomes of OA, however the methods to define OA vary between cohorts. We aimed to provide recommendations for combining knee and hip OA data in extant and future population cohort studies, in order to ...

  15. Systematically missing confounders in individual participant data meta-analysis of observational cohort studies

    NARCIS (Netherlands)

    Jackson, D.; White, I.; Kostis, J.B.; Wilson, A.C.; Folsom, A.R.; Feskens, E.J.M.

    2009-01-01

    One difficulty in performing meta-analyses of observational cohort studies is that the availability of confounders may vary between cohorts, so that some cohorts provide fully adjusted analyses while others only provide partially adjusted analyses. Commonly, analyses of the association between an

  16. Systematically missing confounders in individual participant data meta-analysis of observational cohort studies

    DEFF Research Database (Denmark)

    Jackson, D.; White, I.; Kostis, J.B.

    2009-01-01

    One difficulty in performing meta-analyses of observational cohort studies is that the availability of confounders may vary between cohorts, so that some cohorts provide fully adjusted analyses while others only provide partially adjusted analyses. Commonly, analyses of the association between an...

  17. A prospective cohort study of treatment decision-making for prostate cancer following participation in a multidisciplinary clinic.

    Science.gov (United States)

    Hurwitz, Lauren M; Cullen, Jennifer; Elsamanoudi, Sally; Kim, Daniel J; Hudak, Jane; Colston, Maryellen; Travis, Judith; Kuo, Huai-Ching; Porter, Christopher R; Rosner, Inger L

    2016-05-01

    Patients diagnosed with prostate cancer (PCa) are presented with several treatment options of similar efficacy but varying side effects. Understanding how and why patients make their treatment decisions, as well as the effect of treatment choice on long-term outcomes, is critical to ensuring effective, patient-centered care. This study examined treatment decision-making in a racially diverse, equal-access, contemporary cohort of patients with PCa counseled on treatment options at a multidisciplinary clinic. A prospective cohort study was initiated at the Walter Reed National Military Medical Center (formerly Walter Reed Army Medical Center) in 2006. Newly diagnosed patients with PCa were enrolled before attending a multidisciplinary clinic. Patients completed surveys preclinic and postclinic to assess treatment preferences, reasons for treatment choice, and decisional regret. As of January 2014, 925 patients with PCa enrolled in this study. Surgery (54%), external radiation (20%), and active surveillance (12%) were the most common primary treatments for patients with low- and intermediate-risk PCa, whereas patients with high-risk PCa chose surgery (34%) or external radiation with neoadjuvant hormones (57%). Treatment choice differed by age at diagnosis, race, comorbidity status, and calendar year in both univariable and multivariable analyses. Patients preferred to play an active role in the decision-making process and cited doctors at the clinic as the most helpful source of treatment-related information. Almost all patients reported satisfaction with their decision. This is one of the first prospective cohort studies to examine treatment decision-making in an equal-access, multidisciplinary clinic setting. Studies of this cohort would aid in understanding and improving the PCa decision-making process. Published by Elsevier Inc.

  18. Severe neurodevelopmental disability and healthcare needs among survivors of medical and surgical necrotizing enterocolitis: A prospective cohort study.

    Science.gov (United States)

    Fullerton, Brenna S; Hong, Charles R; Velazco, Cristine S; Mercier, Charles E; Morrow, Kate A; Edwards, Erika M; Ferrelli, Karla R; Soll, Roger F; Modi, Biren P; Horbar, Jeffrey D; Jaksic, Tom

    2017-10-12

    This study characterizes neurodevelopmental outcomes and healthcare needs of extremely low birth weight (ELBW) survivors of necrotizing enterocolitis (NEC) compared to ELBW infants without NEC. Data were collected prospectively on neonates born 22-27weeks' gestation or 401-1000g at 47 Vermont Oxford Network member centers from 1999 to 2012. Detailed neurodevelopmental evaluations were conducted at 18-24months corrected age. Information regarding rehospitalizations, postdischarge surgeries, and feeding was also collected. "Severe neurodevelopmental disability" was defined as: bilateral blindness, hearing impairment requiring amplification, inability to walk 10 steps with support, cerebral palsy, and/or Bayley Mental or Psychomotor Developmental Index neurodevelopmental disability, nearly half underwent postdischarge operations, and a quarter required tube feeding at home. At 18-24months, extremely low birth weight survivors of necrotizing enterocolitis were at markedly increased risk (pneurodevelopmental disability, postdischarge surgery, and tube feeding. II (prospective cohort study with <80% follow-up rate). Copyright © 2017 Elsevier Inc. All rights reserved.

  19. Case-mix study of single incision laparoscopic surgery (SILS) vs. Conventional laparoscopic surgery in colonic cancer resections

    DEFF Research Database (Denmark)

    Mynster, Tommie; Wille-Jørgensen, Peer

    2013-01-01

    of administrations or amount of opioids were seen. Conclusion. With reservation of a small study group we find SILS is like worthy to CLS in colorectal cancer surgery and a benefit in postoperative recovery and pain is possible, but has to be investigated in larger randomised studies.......Single incision laparoscopic surgery (SILS) may be even less invasive to a patient than conventional laparoscopic surgery (CLS). Aim of the study of the applicability of the procedure, the first 1½ year of experiences and comparison with CLS for colonic cancer resections Material and methods. Since...

  20. Opium use and mortality in Golestan Cohort Study: prospective cohort study of 50,000 adults in Iran.

    Science.gov (United States)

    Khademi, Hooman; Malekzadeh, Reza; Pourshams, Akram; Jafari, Elham; Salahi, Rasool; Semnani, Shahryar; Abaie, Behrooz; Islami, Farhad; Nasseri-Moghaddam, Siavosh; Etemadi, Arash; Byrnes, Graham; Abnet, Christian C; Dawsey, Sanford M; Day, Nicholas E; Pharoah, Paul D; Boffetta, Paolo; Brennan, Paul; Kamangar, Farin

    2012-04-17

    To investigate the association between opium use and subsequent risk of death. Prospective cohort study. The Golestan Cohort Study in north-eastern Iran collected detailed validated data on opium use and other exposures at baseline. Participants were enrolled between January 2004 and June 2008 and were followed to May 2011, with a follow-up success rate of over 99%. 50,045 participants aged 40-75 at baseline. Mortality, all cause and major subcategories. 17% (n = 8487) of the participants reported opium use, with a mean duration of 12.7 years. During the follow-up period 2145 deaths were reported. The adjusted hazard ratio for all cause mortality associated with ever use of opium was 1.86 (95% confidence interval 1.68 to 2.06). Opium consumption was significantly associated with increased risks of deaths from several causes including circulatory diseases (hazard ratio 1.81) and cancer (1.61). The strongest associations were seen with deaths from asthma, tuberculosis, and chronic obstructive pulmonary disease (11.0, 6.22, and 5.44, respectively). After exclusion of people who self prescribed opium after the onset of major chronic illnesses, the associations remained strong with a dose-response relation. Opium users have an increased risk of death from multiple causes compared with non-users. Increased risks were also seen in people who used low amounts of opium for a long period and those who had no major illness before use.

  1. Comparative study of postoperative stability between conventional orthognathic surgery and a surgery-first orthognathic approach after bilateral sagittal split ramus osteotomy for skeletal class III correction.

    Science.gov (United States)

    Mah, Deuk-Hyun; Kim, Su-Gwan; Oh, Ji-Su; You, Jae-Seek; Jung, Seo-Yun; Kim, Won-Gi; Yu, Kyung-Hwan

    2017-02-01

    The purpose of this study is to compare the postoperative stability of conventional orthognathic surgery to a surgery-first orthognathic approach after bilateral sagittal split ramus osteotomy (BSSRO). The study included 20 patients who underwent BSSRO for skeletal class III conventional orthognathic surgery and 20 patients who underwent a surgery-first orthognathic approach. Serial lateral cephalograms were analyzed to identify skeletal changes before surgery (T0), immediately after surgery (T1), and after surgery (T2, after 1 year or at debonding). The amount of relapse of the mandible in the conventional orthognathic surgery group from T1 to T2 was 2.23±0.92 mm ( P surgery-first orthognathic approach group from T1 to T2 was 3.49±1.71 mm ( P surgery-first orthognathic approach. Therefore, careful planning and skeletal stability should be considered in orthognathic surgery.

  2. Weight at birth and subsequent fecundability: a prospective cohort study.

    Directory of Open Access Journals (Sweden)

    Cathrine Wildenschild

    Full Text Available To examine the association between a woman's birth weight and her subsequent fecundability.In this prospective cohort study, we included 2,773 Danish pregnancy planners enrolled in the internet-based cohort study "Snart-Gravid", conducted during 2007-2012. Participants were 18-40 years old at study entry, attempting to conceive, and were not receiving fertility treatment. Data on weight at birth were obtained from the Danish Medical Birth Registry and categorized as <2,500 grams, 2,500-2,999 grams, 3,000-3,999 grams, and ≥ 4,000 grams. In additional analyses, birth weight was categorized according to z-scores for each gestational week at birth. Time-to-pregnancy measured in cycles was used to compute fecundability ratios (FR and 95% confidence intervals (CI, using a proportional probabilities regression model.Relative to women with a birth weight of 3,000-3,999 grams, FRs adjusted for gestational age, year of birth, and maternal socio-demographic and medical factors were 0.99 (95% CI: 0.73;1.34, 0.99 (95% CI: 0.87;1.12, and 1.08 (95% CI: 0.94;1.24 for birth weight <2,500 grams, 2,500-2,999 grams, and ≥ 4,000 grams, respectively. Estimates remained unchanged after further adjustment for markers of the participant's mother's fecundability. We obtained similar results when we restricted to women who were born at term, and to women who had attempted to conceive for a maximum of 6 cycles before study entry. Results remained similar when we estimated FRs according to z-scores of birth weight.Our results indicate that birth weight appears not to be an important determinant of fecundability.

  3. perinatal depression in a cohort study of Iranian women

    Directory of Open Access Journals (Sweden)

    Gholam Reza Kheirabadi

    2010-01-01

    Full Text Available Introduction: Childbearing years in the women’s life are associated with the highest risk of depression. Despite the results of some studies that suggested, depression during pregnancy has been associated with poor prenatal care, substance abuse, low birth weight, and preterm delivery and introduced antenatal depression and anxiety as predictors of postnatal depression, researches during past 25 years have focused mostly on postpartum depression so depression during pregnancy is relatively neglected. Materials and methods: We studied depression during third trimester of pregnancy and after delivery, using prospectively gathered data from a cohort of 1898 women. We compared depressive symptom score and the proportion of mothers above a threshold, to indicate probable depressive disorder at each stage. Results: Point prevalence of depressed pregnant women (clinical depression based on BDI score greater than 20 in last trimester of pregnancy, was 22.8% and postnatal rate of depression based on EPD score greater than 12 between 6 to 8 weeks after delivery, was 26.3%. Incidence of PPD in 6 to 8 weeks after delivery in those who were not clinically depressed during pregnancy was, 20.1%. Discussion: We found that history of depression, unplanned pregnancy; being housewife and having 3 or more children were variables with significant relation to ante partum depression. Two main risk factors for post partum depression in this cohort study, were previous history of depression and depression during current pregnancy that highlight the importance of these two variables assessment during pregnancy in order to facilitate timely identification of women at risk.

  4. Perceived age as clinically useful biomarker of ageing: cohort study

    DEFF Research Database (Denmark)

    Christensen, Kaare; Thinggaard, Mikael; McGue, Matt

    2009-01-01

    OBJECTIVE: To determine whether perceived age correlates with survival and important age related phenotypes. DESIGN: Follow-up study, with survival of twins determined up to January 2008, by which time 675 (37%) had died. SETTING: Population based twin cohort in Denmark. PARTICIPANTS: 20 nurses, 10...... young men, and 11 older women (assessors); 1826 twins aged >or=70. MAIN OUTCOME MEASURES: Assessors: perceived age of twins from photographs. Twins: physical and cognitive tests and molecular biomarker of ageing (leucocyte telomere length). RESULTS: For all three groups of assessors, perceived age...... increased with increasing discordance in perceived age within the twin pair-that is, the bigger the difference in perceived age within the pair, the more likely that the older looking twin died first. Twin analyses suggested that common genetic factors influence both perceived age and survival. Perceived...

  5. Investigating the psychological impact of bank robbery: a cohort study.

    Science.gov (United States)

    Hansen, Maj; Armour, Cherie; Shevlin, Mark; Elklit, Ask

    2014-06-01

    Despite numerous annual bank robberies worldwide, research in the psychological sequelae of bank robberies is sparse and characterized by several limitations. To overcome these limitations we investigated the psychological impact of bank robbery in a cohort study by comparing general levels of traumatization and somatization in employees never exposed to robbery and employees exposed to robbery at different degrees and time-points, while controlling for selected risk factors of posttraumatic distress. Multivariate regression analyses showed that only the acute directly exposed robbery group which had a significantly higher score on general traumatization and somatization compared to the control group whilst controlling for other factors. In conclusion, bank robbery exposure appears to be especially associated with psychological distress in the acute phase and in victims present during the robbery. After the acute phase, other factors appear more important in predicting general traumatization and somatization in bank employees compared to exposure to robbery. Copyright © 2014 Elsevier Ltd. All rights reserved.

  6. Psychosocial work environment and antidepressant medication: a prospective cohort study

    DEFF Research Database (Denmark)

    Bonde, Jens Peter; Munch-Hansen, T.; Wieclaw, J.

    2009-01-01

    BACKGROUND: Adverse psychosocial work environments may lead to impaired mental health, but it is still a matter of conjecture if demonstrated associations are causal or biased. We aimed at verifying whether poor psychosocial working climate is related to increase of redeemed subscription...... alone. None of the measured psychosocial work environment factors were consistently related to prescription of antidepressant drugs during the follow-up period. CONCLUSION: The study does not indicate that a poor psychosocial work environment among public service employees is related to prescription...... of antidepressant medication. METHODS: Information on all antidepressant drugs (AD) purchased at pharmacies from 1995 through 2006 was obtained for a cohort of 21,129 Danish public service workers that participated in work climate surveys carried out during the period 2002-2005. Individual self...

  7. [Laparoscopic versus open surgery for colorectal cancer. A comparative study].

    Science.gov (United States)

    Arribas-Martin, Antonio; Díaz-Pizarro-Graf, José Ignacio; Muñoz-Hinojosa, Jorge Demetrio; Valdés-Castañeda, Alberto; Cruz-Ramírez, Omar; Bertrand, Martin Marie

    2014-01-01

    Laparoscopic surgery for colorectal cancer is currently accepted and widespread worldwide. However, according tol the surgical experience on this approach, surgical and short-term oncologic results may vary. Studies comparing laparoscopic vs. open surgery in our population are scarce. To determine the superiority of the laparoscopic vs. open technique for colorectal cancer surgery. This retrospective and comparative study collected data from patients operated on for colorectal cancer between 1999 and 2011 at the Angeles Lomas Hospital, Mexico. A total of 82 patients were included in this study; 47 were operated through an open approach and 35 laparoscopically. Mean operative time was significantly lower in the open approach group (p= 0.008). There were no significant difference between both techniques for intraoperative bleeding (p= 0.3980), number of lymph nodes (p= 0.27), time to initiate oral feeding (p= 0.31), hospital stay (p= 0.12), and postoperative pain (p= 0.19). Procedure-related complications rate and type were not significantly different in both groups (p= 0.44). Patients operated laparoscopically required significantly less analgesic drugs (p= 0.04) and less need for epidural postoperative analgesia (p= 0.01). Laparoscopic approach is as safe as the traditional open approach for colorectal cancer. Early oncological and surgical results confirm its suitability according to this indication.

  8. [Plastic surgery application in artistic studies of breast cosmetic].

    Science.gov (United States)

    Fabié, A; Delay, E; Chavoin, J-P; Soulhiard, F; Seguin, P

    2006-04-01

    As, quest for beauty has always been an aim. There is a need to define the "ideal" beautifull breast with objective caracteristics, usable in plastic, reconstructive and aesthetic surgery. After, we have defined the necessary parameters usable in breast surgery. We realized an anthropomorphic study including 70 volunteer women and one molded model. Multiple pictures have been taken for each volunteer, that were evaluated and noted by five plastic surgeon, five doctors from other speciality, five women, five men. A twenty notation was used for this study. The main values for the ten women that obtained best notation (>or=14/20) were used in order to defined the ideal measures for surgery. Breast arrow and breast arrow over the trunck height were the most significant factors. According statistical studies, this fraction is about 0,387 (P=0,000969). The nice breast has a round shape and look like juvenile breast. Bra size, cup size, base, segments II and III, fraction II/III are not significant in our series of (non operated) natural breast. The ideal breast is in harmony and proportional to the trunck height, with the main fraction of breast arrow on the trunck height about 0,387 in our serie.

  9. Changes in taste preference after colorectal surgery: A longitudinal study.

    Science.gov (United States)

    Welchman, Sophie; Hiotis, Perryhan; Pengelly, Steven; Hughes, Georgina; Halford, Jason; Christiansen, Paul; Lewis, Stephen

    2015-10-01

    Nutrition is a key component of surgical enhanced recovery programmes. However, alterations in food preferences are often reported as reasons for patients not eating in the early postoperative period. We hypothesised that taste preferences are altered in the early postoperative period and this dysgeusia affects patients' food choices during this critical time. This is a longitudinal study looking at taste preferences of patients recovering from surgery. Patients undergoing colonic resections were recruited. Using visual analogue scales participants completed a questionnaire, taste tests and preference scoring of food images for the 6 groups of taste (bitter, salty, savoury, sour, spicy and sweet) preoperatively and on postoperative days 1-3. Patients were also offered snacks postoperatively, which represented foods from the six groups and consumption was measured. Differences from baseline were assessed using the Friedman's and Wilcoxon tests. 31 patients were studied. In the immediate postoperative period participants reported deterioration in their sense of taste (p ≤ 0.001), increased nausea (p palatability for salty taste increased (p = 0.001) following surgery. The highest rated images were for savoury food with only the ratings for salty food increasing after surgery (p foods in the postoperative period. Bitter, sour and spicy foods were the least frequently consumed. This is the first study to investigate postsurgical patients' food preferences. A consistent change in all the individual tastes with the exception of salty in the postoperative period was observed. The most desirable tastes were for savoury and sweet, reflecting patients' preoperative preferences. An improved understanding of taste may improve the resumption of eating after colonic surgery. Copyright © 2014 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism. All rights reserved.

  10. Deep phenotyping of the unselected COPSAC2010 birth cohort study

    DEFF Research Database (Denmark)

    Bisgaard, Hans Flinker; Vissing, Nadja Hawwa; Carson, C. G.

    2013-01-01

    for acute lung symptoms was conducted in the children with recurrent wheeze. Seven hundred and thirty‐eight mothers were recruited from week 24 of gestation, and 700 of their children were included in the birth cohort. The cohort has an over‐representation of atopic parents. The participant satisfaction...

  11. Cohort Differences in Cognitive Aging in the Longitudinal Aging Study Amsterdam.

    Science.gov (United States)

    Brailean, Anamaria; Huisman, Martijn; Prince, Martin; Prina, A Matthew; Deeg, Dorly J H; Comijs, Hannie

    2016-09-30

    This study aims to examine cohort differences in cognitive performance and rates of change in episodic memory, processing speed, inductive reasoning, and general cognitive performance and to investigate whether these cohort effects may be accounted for by education attainment. The first cohort (N = 705) was born between 1920 and 1930, whereas the second cohort (N = 646) was born between 1931 and 1941. Both birth cohorts were aged 65 to 75 years at baseline and were followed up 3 and 6 years later. Data were analyzed using linear mixed models. The later born cohort had better general cognitive performance, inductive reasoning, and processing speed at baseline, but cohort differences in inductive reasoning and general cognitive performance disappeared after adjusting for education. The later born cohort showed steeper decline in processing speed. Memory decline was steeper in the earlier born cohort but only from Time 1 to Time 3 when the same memory test was administered. Education did not account for cohort differences in cognitive decline. The later born cohort showed better initial performance in certain cognitive abilities, but no better preservation of cognitive abilities overtime compared with the earlier born cohort. These findings carry implications for healthy cognitive aging. © The Author 2016. Published by Oxford University Press on behalf of The Gerontological Society of America.

  12. Immediate postoperative complications in transsphenoidal pituitary surgery: A prospective study

    Directory of Open Access Journals (Sweden)

    Tumul Chowdhury

    2014-01-01

    Full Text Available Background: Considering the important role of pituitary gland in regulating various endocrine axes and its unique anatomical location, various postoperative complications can be anticipated resulting from surgery on pituitary tumors. We examined and categorized the immediate postoperative complications according to various tumor pathologies. Materials and Methods: We carried out a prospective study in 152 consecutive patients and noted various postoperative complications during neurosurgical intensive care unit stay (within 48 hrs of hospital stay in patients undergoing transsphenoidal removal of pituitary tumors. Results: In our series, various groups showed different postoperative complications out of which, cerebrospinal fluid leak was the commonest followed by diabetes insipidus, postoperative nausea and vomiting, and hematoma at operation site. Conclusion: Various immediate postoperative complications can be anticipated in transsphenoidal pituitary surgery even though, it is considered to be relatively safe.

  13. A comparison of Cox and logistic regression for use in genome-wide association studies of cohort and case-cohort design.

    Science.gov (United States)

    Staley, James R; Jones, Edmund; Kaptoge, Stephen; Butterworth, Adam S; Sweeting, Michael J; Wood, Angela M; Howson, Joanna M M

    2017-06-01

    Logistic regression is often used instead of Cox regression to analyse genome-wide association studies (GWAS) of single-nucleotide polymorphisms (SNPs) and disease outcomes with cohort and case-cohort designs, as it is less computationally expensive. Although Cox and logistic regression models have been compared previously in cohort studies, this work does not completely cover the GWAS setting nor extend to the case-cohort study design. Here, we evaluated Cox and logistic regression applied to cohort and case-cohort genetic association studies using simulated data and genetic data from the EPIC-CVD study. In the cohort setting, there was a modest improvement in power to detect SNP-disease associations using Cox regression compared with logistic regression, which increased as the disease incidence increased. In contrast, logistic regression had more power than (Prentice weighted) Cox regression in the case-cohort setting. Logistic regression yielded inflated effect estimates (assuming the hazard ratio is the underlying measure of association) for both study designs, especially for SNPs with greater effect on disease. Given logistic regression is substantially more computationally efficient than Cox regression in both settings, we propose a two-step approach to GWAS in cohort and case-cohort studies. First to analyse all SNPs with logistic regression to identify associated variants below a pre-defined P-value threshold, and second to fit Cox regression (appropriately weighted in case-cohort studies) to those identified SNPs to ensure accurate estimation of association with disease.

  14. Glove failure in elective thyroid surgery: A prospective randomized study

    Directory of Open Access Journals (Sweden)

    Dariusz Timler

    2015-06-01

    Full Text Available Objectives: To analyze perforation rate in sterile gloves used by surgeons in the operating theatre of the Department of Endocrinological and General Surgery of Medical University of Lodz. Material and Methods: Randomized and controlled trial. This study analyses the incidents of tears in sterile surgical gloves used by surgeons during operations on 3 types of thyroid diseases according to the 10th revision of International Statistical Classification of Diseases and Related Health Problems (ICD-10 codes. Nine hundred seventy-two pairs (sets of gloves were collected from 321 surgical procedures. All gloves were tested immediately following surgery using the water leak test (EN455-1 to detect leakage. Results: Glove perforation was detected in 89 of 972 glove sets (9.2%. Statistically relevant more often glove tears occurred in operator than the 1st assistant (p < 0.001. The sites of perforation were localized mostly on the middle finger of the non-dominant hand (22.5%, and the non-dominant ring finger (17.9%. Conclusions: This study has proved that the role performed by the surgeon during the procedure (operator, 1st assistant has significant influence on the risk of glove perforations. Nearly 90% of glove perforations are unnoticed during surgery.

  15. Surgery resident selection and evaluation. A critical incident study.

    Science.gov (United States)

    Edwards, J C; Currie, M L; Wade, T P; Kaminski, D L

    1993-03-01

    This article reports a study of the process of selecting and evaluating general surgery residents. In personnel psychology terms, a job analysis of general surgery was conducted using the Critical Incident Technique (CIT). The researchers collected 235 critical incidents through structured interviews with 10 general surgery faculty members and four senior residents. The researchers then directed the surgeons in a two-step process of sorting the incidents into categories and naming the categories. The final essential categories of behavior to define surgical competence were derived through discussion among the surgeons until a consensus was formed. Those categories are knowledge/self-education, clinical performance, diagnostic skills, surgical skills, communication skills, reliability, integrity, compassion, organization skills, motivation, emotional control, and personal appearance. These categories were then used to develop an interview evaluation form for selection purposes and a performance evaluation form to be used throughout residency training. Thus a continuum of evaluation was established. The categories and critical incidents were also used to structure the interview process, which has demonstrated increased interview validity and reliability in many other studies. A handbook for structuring the interviews faculty members conduct with applicants was written, and an interview training session was held with the faculty. The process of implementation of the structured selection interviews is being documented currently through qualitative research.

  16. Postoperative infection risk after splenectomy: A prospective cohort study.

    Science.gov (United States)

    Barmparas, Galinos; Lamb, Alexander W; Lee, Debora; Nguyen, Brandon; Eng, Jamie; Bloom, Matthew B; Ley, Eric J

    2015-05-01

    Splenectomy is associated with a life-long risk for overwhelming infections. The risk for early post-operative infectious complications following traumatic and elective splenectomy is, however, understudied. This investigation aimed to determine if splenectomy increases the risk for post-operative infections. This was a retrospective review of prospectively collected data on patients admitted to the surgical intensive care unit (SICU) between 1/2011 and 7/2013 investigating the risk for infectious complications in patients undergoing a splenectomy compared with those undergoing any other abdominal surgery. During the 30-month study period, a total of 1884 patients were admitted to the SICU. Of those, 33 (2%) had a splenectomy and 493 (26%) had an abdominal surgery. The two groups were well balanced for age, APACHE IV score >20, and past medical history, including diabetes mellitus, cardiac history, renal failure or immunosuppression. Patients undergoing splenectomy were more likely to have sustained a traumatic injury (30% vs. 7%, p splenectomy was associated with increased risk for infectious complications (49% vs. 29%, Adjusted Odds Ratio (AOR) [95% CI]: 2.7 [1.3, 5.6], p = 0.01), including intra-abdominal abscess (9% vs. 3%, AOR [95% CI]: 4.3 [1.1, 16.2], p = 0.03). On a subgroup analysis, there were no differences between traumatic and elective splenectomy with regards to overall infectious complications (50% vs. 46%, p = 0.84), although, abdominal abscess developed only in those who had an elective splenectomy (0% vs. 12%, p = 0.55). Splenectomy increases the risk for post-operative infectious complications. Further studies identifying strategies to decrease the associated morbidity are necessary. Copyright © 2015 IJS Publishing Group Limited. Published by Elsevier Ltd. All rights reserved.

  17. Active Bleeding after Cardiac Surgery: A Prospective Observational Multicenter Study.

    Directory of Open Access Journals (Sweden)

    Pascal H Colson

    Full Text Available To estimate the incidence of active bleeding after cardiac surgery (AB based on a definition directly related on blood flow from chest drainage; to describe the AB characteristics and its management; to identify factors of postoperative complications.AB was defined as a blood loss > 1.5 ml/kg/h for 6 consecutive hours within the first 24 hours or in case of reoperation for hemostasis during the first 12 postoperative hours. The definition was applied in a prospective longitudinal observational study involving 29 French centers; all adult patients undergoing cardiac surgery with cardiopulmonary bypass were included over a 3-month period. Perioperative data (including blood product administration were collected. To study possible variation in clinical practice among centers, patients were classified into two groups according to the AB incidence of the center compared to the overall incidence: "Low incidence" if incidence is lower and "High incidence" if incidence is equal or greater than overall incidence. Logistic regression analysis was used to identify risk factors of postoperative complications.Among 4,904 patients, 129 experienced AB (2.6%, among them 52 reoperation. Postoperative bleeding loss was 1,000 [820;1,375] ml and 1,680 [1,280;2,300] ml at 6 and 24 hours respectively. Incidence of AB varied between centers (0 to 16% but was independent of in-centre cardiac surgical experience. Comparisons between groups according to AB incidence showed differences in postoperative management. Body surface area, preoperative creatinine, emergency surgery, postoperative acidosis and red blood cell transfusion were risk factors of postoperative complication.A blood loss > 1.5 ml/kg/h for 6 consecutive hours within the first 24 hours or early reoperation for hemostasis seems a relevant definition of AB. This definition, independent of transfusion, adjusted to body weight, may assess real time bleeding occurring early after surgery.

  18. Active Bleeding after Cardiac Surgery: A Prospective Observational Multicenter Study.

    Science.gov (United States)

    Colson, Pascal H; Gaudard, Philippe; Fellahi, Jean-Luc; Bertet, Héléna; Faucanie, Marie; Amour, Julien; Blanloeil, Yvonnick; Lanquetot, Hervé; Ouattara, Alexandre; Picot, Marie Christine

    2016-01-01

    To estimate the incidence of active bleeding after cardiac surgery (AB) based on a definition directly related on blood flow from chest drainage; to describe the AB characteristics and its management; to identify factors of postoperative complications. AB was defined as a blood loss > 1.5 ml/kg/h for 6 consecutive hours within the first 24 hours or in case of reoperation for hemostasis during the first 12 postoperative hours. The definition was applied in a prospective longitudinal observational study involving 29 French centers; all adult patients undergoing cardiac surgery with cardiopulmonary bypass were included over a 3-month period. Perioperative data (including blood product administration) were collected. To study possible variation in clinical practice among centers, patients were classified into two groups according to the AB incidence of the center compared to the overall incidence: "Low incidence" if incidence is lower and "High incidence" if incidence is equal or greater than overall incidence. Logistic regression analysis was used to identify risk factors of postoperative complications. Among 4,904 patients, 129 experienced AB (2.6%), among them 52 reoperation. Postoperative bleeding loss was 1,000 [820;1,375] ml and 1,680 [1,280;2,300] ml at 6 and 24 hours respectively. Incidence of AB varied between centers (0 to 16%) but was independent of in-centre cardiac surgical experience. Comparisons between groups according to AB incidence showed differences in postoperative management. Body surface area, preoperative creatinine, emergency surgery, postoperative acidosis and red blood cell transfusion were risk factors of postoperative complication. A blood loss > 1.5 ml/kg/h for 6 consecutive hours within the first 24 hours or early reoperation for hemostasis seems a relevant definition of AB. This definition, independent of transfusion, adjusted to body weight, may assess real time bleeding occurring early after surgery.

  19. Health status of UK care home residents: a cohort study.

    Science.gov (United States)

    Gordon, Adam Lee; Franklin, Matthew; Bradshaw, Lucy; Logan, Pip; Elliott, Rachel; Gladman, John R F

    2014-01-01

    UK care home residents are often poorly served by existing healthcare arrangements. Published descriptions of residents' health status have been limited by lack of detail and use of data derived from surveys drawn from social, rather than health, care records. to describe in detail the health status and healthcare resource use of UK care home residents a 180-day longitudinal cohort study of 227 residents across 11 UK care homes, 5 nursing and 6 residential, selected to be representative for nursing/residential status and dementia registration. Barthel index (BI), Mini-mental state examination (MMSE), Neuropsychiatric index (NPI), Mini-nutritional index (MNA), EuroQoL-5D (EQ-5D), 12-item General Health Questionnaire (GHQ-12), diagnoses and medications were recorded at baseline and BI, NPI, GHQ-12 and EQ-5D at follow-up after 180 days. National Health Service (NHS) resource use data were collected from databases of local healthcare providers. out of a total of 323, 227 residents were recruited. The median BI was 9 (IQR: 2.5-15.5), MMSE 13 (4-22) and number of medications 8 (5.5-10.5). The mean number of diagnoses per resident was 6.2 (SD: 4). Thirty per cent were malnourished, 66% had evidence of behavioural disturbance. Residents had contact with the NHS on average once per month. residents from both residential and nursing settings are dependent, cognitively impaired, have mild frequent behavioural symptoms, multimorbidity, polypharmacy and frequently use NHS resources. Effective care for such a cohort requires broad expertise from multiple disciplines delivered in a co-ordinated and managed way.

  20. [Thymomectomy by minimally invasive surgery. Comparative study videosurgery versus robot-assisted surgery].

    Science.gov (United States)

    Witte Pfister, A; Baste, J-M; Piton, N; Bubenheim, M; Melki, J; Wurtz, A; Peillon, C

    2017-05-01

    To report the results of minimally invasive surgery in patients with stage I or II thymoma in the Masaoka classification. The reference technique is partial or complete thymectomy by sternotonomy. A retrospective single-center study of a prospective database including all cases of thymoma operated from April 2009 to February 2015 by minimally invasive techniques: either videosurgery (VATS) or robot-assisted surgery (RATS). The surgical technique, type of resection, length of hospital stay, postoperative complications and recurrences were analysed. Our series consisted of 22 patients (15 women and 7 men). The average age was 53 years. Myasthenia gravis was present in 12 patients. Eight patients were operated on by VATS and 14 patiens by RATS. There were no conversions to sternotomy and no perioperative deaths. The mean operating time was 92min for VATS and 137min for RATS (P<0.001). The average hospital stay was 5 days. The mean weight of the specimen for the VATS group was 13.2 and 45.7mg for the RATS group. Twelve patients were classified Masaoka stage I and 10 were stage II. According to the WHO classification there were 7 patients type A, 5 type AB, 4 type B1, 4 type B2 4 and 2 type B3. As proposed by the Group ITMIG-IASLC in 2015 all patients corresponded to group I. The mean follow-up period was 36 months. We noted 3 major perioperative complications according to the Clavien-Dindo classification: one pneumonia, one phrenic nerve paralysis and one recurrent laryngeal nerve palsy. We observed one case of local recurrence at 22 months. Following surgery 4 patients were treated with radiotherapy and 2 patients with chemotherapy. The minimally invasive route is safe, relatively atraumatic and may be incorporated in the therapeutic arsenal for the treatment of Masaoka stage I and II thymoma as an alternative to conventional sternotomy. RATS and VATS are two minimally invasive techniques and the results in the short and medium term are

  1. Plastic Surgery Inclusion in the Undergraduate Medical Curriculum: Perception, Challenges, and Career Choice—A Comparative Study

    Directory of Open Access Journals (Sweden)

    M. Farid

    2017-01-01

    Full Text Available Objective. The undergraduate medical curriculum has been overcrowded with core learning outcomes with no formal exposure to plastic surgery. The aim of this study was to compare medical students from two educational settings for the basic understanding, preferred learning method, and factors influencing a career choice in plastic surgery. Design and Setting. A prospective cohort study based on a web-based anonymous questionnaire sent to final year medical students at Birmingham University (United Kingdom, McGill University (Canada, and a control group (non-medical staff. The questions were about plastic surgery: (1 source of information and basic understanding; (2 undergraduate curriculum inclusion and preferred learning methods; (3 factors influencing a career choice. A similar questionnaire was sent to non-medical staff (control group. The data was analysed based on categorical outcomes (Chi-square χ2 and level of significance p≤0.05. Results. Questionnaire was analysed for 243 students (Birmingham, n=171/332, 52% (McGill n=72/132, 54%. Birmingham students (14% considered the word “plastic” synonymous with “cosmetic” more than McGill students (4%, p<0.025. Teaching was the main source of knowledge for McGill students (39%, p<0.001 while Birmingham students and control group chose the media (70%, p<0.001. McGill students (67% more than Birmingham (49%, p<0.010 considered curriculum inclusion. The preferred learning method was lectures for McGill students (61%, p<0.01 but an optional module for Birmingham (61%. A similar proportion (18% from both student groups considered a career in plastic surgery. Conclusions. Medical students recognised the need for plastic surgery inclusion in the undergraduate curriculum. There was a difference for plastic surgery source of information, operations, and preferred method of learning for students. The study highlighted the urgent need to reform plastic surgery undergraduate teaching in

  2. International Network of Chronic Kidney Disease cohort studies (iNET-CKD): a global network of chronic kidney disease cohorts.

    Science.gov (United States)

    Dienemann, Thomas; Fujii, Naohiko; Orlandi, Paula; Nessel, Lisa; Furth, Susan L; Hoy, Wendy E; Matsuo, Seiichi; Mayer, Gert; Methven, Shona; Schaefer, Franz; Schaeffner, Elke S; Solá, Laura; Stengel, Bénédicte; Wanner, Christoph; Zhang, Luxia; Levin, Adeera; Eckardt, Kai-Uwe; Feldman, Harold I

    2016-09-02

    Chronic kidney disease (CKD) is a global health burden, yet it is still underrepresented within public health agendas in many countries. Studies focusing on the natural history of CKD are challenging to design and conduct, because of the long time-course of disease progression, a wide variation in etiologies, and a large amount of clinical variability among individuals with CKD. With the difference in health-related behaviors, healthcare delivery, genetics, and environmental exposures, this variability is greater across countries than within one locale and may not be captured effectively in a single study. Studies were invited to join the network. Prerequisites for membership included: 1) observational designs with a priori hypotheses and defined study objectives, patient-level information, prospective data acquisition and collection of bio-samples, all focused on predialysis CKD patients; 2) target sample sizes of 1,000 patients for adult cohorts and 300 for pediatric cohorts; and 3) minimum follow-up of three years. Participating studies were surveyed regarding design, data, and biosample resources. Twelve prospective cohort studies and two registries covering 21 countries were included. Participants age ranges from >2 to >70 years at inclusion, CKD severity ranges from stage 2 to stage 5. Patient data and biosamples (not available in the registry studies) are measured yearly or biennially. Many studies included multiple ethnicities; cohort size ranges from 400 to more than 13,000 participants. Studies' areas of emphasis all include but are not limited to renal outcomes, such as progression to ESRD and death. iNET-CKD (International Network of CKD cohort studies) was established, to promote collaborative research, foster exchange of expertise, and create opportunities for research training. Participating studies have many commonalities that will facilitate comparative research; however, we also observed substantial differences. The diversity we observed across

  3. Cohorts based on decade of death: no evidence for secular trends favoring later cohorts in cognitive aging and terminal decline in the AHEAD study.

    Science.gov (United States)

    Hülür, Gizem; Infurna, Frank J; Ram, Nilam; Gerstorf, Denis

    2013-03-01

    Studies of birth-year cohorts examined over the same age range often report secular trends favoring later-born cohorts, who are cognitively fitter and show less steep cognitive declines than earlier-born cohorts. However, there is initial evidence that those advantages of later-born cohorts do not carry into the last years of life, suggesting that pervasive mortality-related processes minimize differences that were apparent earlier in life. Elaborating this work from an alternative perspective on cohort differences, we compared rates of cognitive aging and terminal decline in episodic memory between cohorts based on the year participants had died, earlier (between 1993 and 1999) or later in historical time (between 2000 and 2010). Specifically, we compared trajectories of cognitive decline in 2 death-year cohorts of participants in the Asset and Health Dynamics Among the Oldest Old study that were matched on age at death and education and controlled for a variety of additional covariates. Results revealed little evidence of secular trends favoring later cohorts. To the contrary, the cohort that died in the 2000s showed a less favorable trajectory of age-related memory decline than the cohort that died in the 1990s. In examinations of change in relation to time to death, the cohort dying in the 2000s experienced even steeper terminal declines than the cohort dying in the 1990s. We suggest that secular increases in "manufacturing" survival may exacerbate age- and mortality-related cognitive declines among the oldest old.

  4. Sex effects on short-term complications after hip fracture: a prospective cohort study

    Directory of Open Access Journals (Sweden)

    Ekström W

    2015-08-01

    Full Text Available Wilhelmina Ekström,1 Bodil Samuelsson,2 Sari Ponzer,3 Tommy Cederholm,4,5 Karl-Göran Thorngren,6 Margareta Hedström7 1Department of Molecular Medicine and Surgery, Section of Orthopaedics and Sports Medicine, Karolinska Institutet, Karolinska University Hospital, Solna, 2Department of Clinical Sciences, Karolinska Institutet, Danderyd Hospital, 3Department of Clinical Science and Education, Section of Orthopaedics, Karolinska Institutet, Södersjukhuset, Stockholm, 4Department of Public Health and Caring Sciences, 5Department of Geriatrics, Uppsala University, Uppsala University Hospital, Uppsala, 6Department of Clinical Sciences, Lund, Orthopaedics, Lund University, Lund, 7Department of Orthopaedics, Institute of Clinical Science, Intervention and Technology (CLINTEC, Karolinska University Hospital, Huddinge, Stockholm, Sweden Objectives: To evaluate potential sex differences and other factors associated with complications within 4 months after a hip fracture.Methods: A total of 1,915 patients ≥65 years (480 men with hip fracture were consecutively included in a prospective multicenter cohort study. A review of medical records and patient interviews according to a study protocol based on the Standardized Audit of Hip Fractures in Europe (SAHFE, RIKSHÖFT was performed. Sex differences in comorbidity according to the American Society of Anesthesiologists score and complications 4 months after a hip fracture were registered. Multivariate logistic regression analysis was performed to identify factors related to complications.Results: Male sex was associated with worse general health according to the American Society of Anesthesiologists classification (P=0.005 and with more comorbidities (P<0.001. Male sex emerged as a risk factor for developing pneumonia (P<0.001, and additionally, 18% of the men suffered from cardiac complications compared with 13% of the females (P=0.018. Female sex was predisposed for urinary tract infections, 30% vs 23

  5. Study of problems with appendicitis in children undergoing laparoscopic surgery

    International Nuclear Information System (INIS)

    Kosumi, Takuya; Yonekura, Takeo; Yamauchi, Katsuji; Kuroda, Seika; Kimura, Takuya; Ihara, Yoshiyuki

    2011-01-01

    Seventy-one children who underwent laparoscopic appendectomy over the 8 years previous to the study were investigated. The patients were divided into 2 groups: those who had undergome surgery within 24 hours (EA group) and after conservative treatment (IA group). The condition of appendicitis on CT was classified into appendiceal mass (Group A), perforation (Group B), and non-perforation (Group C). Perioperative complications were mainly investigated in these groups. The EA group included 45 patients, and postoperative complications occurred in 2 of 12 patients in Group A (wound infection and intraperitoneal abscess in 1 each) and 2 of 14 patients in Group B (postoperative ileus and intraperitoneal abscess in 1 each). The IA group included 26 patients, and complications occurred only during conservative treatment in 2 of 7 patients in Group A (recurrence of inflammation and ileus in 1 each) and 2 of 2 patients in Group B (recurrence of inflammation and emergency surgery for the aggravation of symptoms in 1 each). No complication occurred in Group C of either the EA or IA group. Treatment was not switched to laparotomy in any patient in the EA or IA group, and no complication occurred during surgery. The total duration of hospitalization was shorter in the EA than in the IA group in all Groups A, B, and C. The risk of postoperative complications was high in the EA group, whereas complications during conservative treatment were problematic in the IA group. (author)

  6. Effects of sex and obesity on gait biomechanics before and six months after total knee arthroplasty: A longitudinal cohort study.

    Science.gov (United States)

    Paterson, K L; Sosdian, L; Hinman, R S; Wrigley, T V; Kasza, J; Dowsey, M; Choong, P; Bennell, K L

    2018-03-01

    Gait biomechanics, sex, and obesity can contribute to suboptimal outcomes from primary total knee arthroplasty. The aims of this study were to i) determine if sex and/or obesity influence the amount of change in gait biomechanics from pre-surgery to six months post-surgery and; ii) assess if gait returns to normal in men and women. Three-dimensional gait analysis was performed on 43 patients undergoing primary total knee arthroplasty for knee osteoarthritis (pre- and six months post-operative) and 40 asymptomatic controls. Mixed linear regression models were fit to assess which factors influenced change in gait biomechanics within the arthroplasty cohort, and interaction terms were included to assess if biomechanics returned to normal following surgery. Male peak knee adduction moment (p biomechanics after arthroplasty. Men retained abnormal gait patterns after surgery, whilst women did not. Further research should determine the long-term implications of gait abnormalities seen in men after arthroplasty. Copyright © 2018 Elsevier B.V. All rights reserved.

  7. Multivariate analysis of the risk of stomach cancer after ulcer surgery in an Amsterdam cohort of postgastrectomy patients

    NARCIS (Netherlands)

    Tersmette, A. C.; Goodman, S. N.; Offerhaus, G. J.; Tersmette, K. W.; Giardiello, F. M.; Vandenbroucke, J. P.; Tytgat, G. N.

    1991-01-01

    Although gastric cancer incidence is decreasing in the western world, it remains an important cause of death, and there has been debate about screening persons who have undergone gastrectomy for benign ulcers. The authors analyzed risk factors for stomach cancer mortality in an Amsterdam cohort of

  8. Opium use and mortality in Golestan Cohort Study: prospective cohort study of 50 000 adults in Iran

    Science.gov (United States)

    Khademi, Hooman; Pourshams, Akram; Jafari, Elham; Salahi, Rasool; Semnani, Shahryar; Abaie, Behrooz; Islami, Farhad; Nasseri-Moghaddam, Siavosh; Etemadi, Arash; Byrnes, Graham; Abnet, Christian C; Dawsey, Sanford M; Day, Nicholas E; Pharoah, Paul D; Boffetta, Paolo; Kamangar, Farin

    2012-01-01

    Objectives To investigate the association between opium use and subsequent risk of death. Design Prospective cohort study. Setting The Golestan Cohort Study in north-eastern Iran collected detailed validated data on opium use and other exposures at baseline. Participants were enrolled between January 2004 and June 2008 and were followed to May 2011, with a follow-up success rate of over 99%. Participants 50 045 participants aged 40-75 at baseline. Main outcomes Mortality, all cause and major subcategories. Results 17% (n=8487) of the participants reported opium use, with a mean duration of 12.7 years. During the follow-up period 2145 deaths were reported. The adjusted hazard ratio for all cause mortality associated with ever use of opium was 1.86 (95% confidence interval 1.68 to 2.06). Opium consumption was significantly associated with increased risks of deaths from several causes including circulatory diseases (hazard ratio 1.81) and cancer (1.61). The strongest associations were seen with deaths from asthma, tuberculosis, and chronic obstructive pulmonary disease (11.0, 6.22, and 5.44, respectively). After exclusion of people who self prescribed opium after the onset of major chronic illnesses, the associations remained strong with a dose-response relation. Conclusion Opium users have an increased risk of death from multiple causes compared with non-users. Increased risks were also seen in people who used low amounts of opium for a long period and those who had no major illness before use. PMID:22511302

  9. Age and fecundability in a North American preconception cohort study.

    Science.gov (United States)

    Wesselink, Amelia K; Rothman, Kenneth J; Hatch, Elizabeth E; Mikkelsen, Ellen M; Sørensen, Henrik T; Wise, Lauren A

    2017-12-01

    There is a well-documented decline in fertility treatment success with increasing female age; however, there are few preconception cohort studies that have examined female age and natural fertility. In addition, data on male age and fertility are inconsistent. Given the increasing number of couples who are attempting conception at older ages, a more detailed characterization of age-related fecundability in the general population is of great clinical utility. The purpose of this study was to examine the association between female and male age with fecundability. We conducted a web-based preconception cohort study of pregnancy planners from the United States and Canada. Participants were enrolled between June 2013 and July 2017. Eligible participants were 21-45 years old (female) or ≥21 years old (male) and had not been using fertility treatments. Couples were followed until pregnancy or for up to 12 menstrual cycles. We analyzed data from 2962 couples who had been trying to conceive for ≤3 cycles at study entry and reported no history of infertility. We used life-table methods to estimate the unadjusted cumulative pregnancy proportion at 6 and 12 cycles by female and male age. We used proportional probabilities regression models to estimate fecundability ratios, the per-cycle probability of conception for each age category relative to the referent (21-24 years old), and 95% confidence intervals. Among female patients, the unadjusted cumulative pregnancy proportion at 6 cycles of attempt time ranged from 62.0% (age 28-30 years) to 27.6% (age 40-45 years); the cumulative pregnancy proportion at 12 cycles of attempt time ranged from 79.3% (age 25-27 years old) to 55.5% (age 40-45 years old). Similar patterns were observed among male patients, although differences between age groups were smaller. After adjusting for potential confounders, we observed a nearly monotonic decline in fecundability with increasing female age, with the exception of 28-33 years, at which

  10. Warfarin and fibrinolysis - a challenging combination: an observational cohort study

    Directory of Open Access Journals (Sweden)

    Luurila Harri

    2011-04-01

    Full Text Available Abstract Background Patients presenting with ST-segment elevation myocardial infarction (STEMI frequently use warfarin. Fibrinolytic agents and warfarin both increase bleeding risk, but only a few studies have been published concerning the bleeding risk of warfarin-prescribed patients receiving fibrinolysis. The objective of this study was to define the prevalence for intracranial haemorrhage (ICH or major bleeding in patients on warfarin treatment receiving pre-hospital fibrinolysis. Methods This was an observational cohort study. Data for this retrospective case series were collected in Helsinki Emergency Medical Service catchment area from 1.1.1997 to 30.6.2010. All warfarin patients with suspected ST-segment elevation myocardial infarction (STEMI, who received pre-hospital fibrinolysis, were included. Bleeding complications were detected from Medical Records and classified as ICH, major or minor bleeding. Results Thirty-six warfarin patients received fibrinolysis during the study period. Fourteen patients had bleeding complications. One (3%, 95% CI 0-15% patient had ICH, six (17%, 95% CI 7-32% had major and seven (19%, 95% CI 9-35% had minor bleeding. The only fatal bleeding occurred in a patient with ICH. Patients' age, fibrinolytic agent used or aspirin use did not predispose to bleeding complications. High International Normalized Ratio (INR seemed to predispose to bleedings with values over 3, but no statistically significant difference was found. Conclusions Bleedings occur frequently in warfarin patients treated with fibrinolysis in the real world setting, but they are rarely fatal.

  11. Cohort description: The Danish study of Functional Disorders

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    Dantoft TM

    2017-02-01

    Full Text Available Thomas Meinertz Dantoft,1 Jeanette Frost Ebstrup,1 Allan Linneberg,1–3 Sine Skovbjerg,1 Anja Lykke Madsen,1 Jesper Mehlsen,4 Louise Brinth,4 Lene Falgaard Eplov,5 Tina Wisbech Carstensen,6,7 Andreas Schroder,6,7 Per Klausen Fink,6,7 Erik Lykke Mortensen,8 Torben Hansen,9 Oluf Pedersen,9 Torben Jørgensen1,10,11 1Research Centre for Prevention and Health, The Capital Region of Denmark, Glostrup, 2Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, 3Department of Clinical Experimental Research, Rigshospitalet, Glostrup, 4Coordinating Research Centre, Bispebjerg and Frederiksberg Hospital, Frederiksberg, 5Mental Health Centre Copenhagen, Research Unit, Mental Health Services, Capital Region of Denmark, Copenhagen, 6The Research Clinic for Functional Disorders and Psychosomatics, Aarhus University Hospital, 7Faculty of Health Sciences, University of Aarhus, Aarhus, 8Department of Public Health and Center for Healthy Aging, 9Novo Nordisk Foundation Center for Basic Metabolic Research, 10Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, 11Faculty of Medicine, Aalborg University, Aalborg, Denmark Abstract: The Danish study of Functional Disorders (DanFunD cohort was initiated to outline the epidemiology of functional somatic syndromes (FSS and is the first larger coordinated epidemiological study focusing exclusively on FSS. FSS are prevalent in all medical settings and can be defined as syndromes that, after appropriate medical assessment, cannot be explained in terms of a conventional medical or surgical disease. FSS are frequent and the clinical importance varies from vague symptoms to extreme disability. No well-described medical explanations exist for FSS, and how to delimit FSS remains a controversial topic. The specific aims with the cohort were to test delimitations of FSS, estimate prevalence and incidence rates, identify risk factors

  12. Fistulotomy versus fistulectomy for simple fistula in ano: a retrospective cohort study

    International Nuclear Information System (INIS)

    Murtaza, G; Shaikh, F.A.; Chawla, T.; Rajput, B.U.; Shahzad, N.; Ansari, S.

    2017-01-01

    To compare fistulotomy with fistulectomy for wound healing, duration of surgery, post-operative pain, incontinence and recurrence in patients with fistula in ano. Methods: This retrospective cohort study was conducted at the Aga Khan University Hospital, Karachi, and comprised data of adults who had undergone fistulotomy/fistulectomy for simple fistula in ano from January 2007 to August 2012. Data collection was done in August 2013 using questionnaire and telephonic interviews. Outcome variables like duration of wound healing, recurrence, incontinence, duration of surgery and post-operative pain were compared in both the groups. SPSS 19 was used for data analysis. Results: Of the 192 cases, there were 96(50%) in each group. The mean age was 40.51 years (range: 21-72 years) in the fistulotomy group and 41.14 years (range: 21-66 years) in the fistulectomy group (p=0.66). Both groups were comparable for baseline demographic variables. The median duration of wound healing was shorter in the fistulotomy group 15 days (Interquartile range: 7-20 days) compared to the fistulectomy group 30 days (Interquartile range: 15-42 days) (p<0.001). The incidence of recurrence was comparable in fistulotomy vs. fistulectomy (3[3.12%] vs. 4[4.16%]; p=0.70). The incidence of incontinence was higher in fistulotomy compared to fistulectomy (5[5.3%] vs. 12[12.5%]; p=0.07). The severity of incontinence was also compared but the difference was insignificant (p=0.06). The median duration of surgery was significantly shorter in fistulotomy group 17 minutes (Interquartile range: 12-25 minutes) compared to fistulectomy group 25 minutes Interquartile range: 20-35 minutes (p<0.001). The median post-operative pain in the surgical day care unit and at the first follow-up in clinic was zero for both groups. Conclusion: Fistulotomy yielded better results than fistulectomy since it significantly decreased the duration of wound healing and duration of surgery without increasing the incidence of

  13. Low organisational justice and heavy drinking: a prospective cohort study.

    Science.gov (United States)

    Kouvonen, Anne; Kivimäki, Mika; Elovainio, Marko; Väänänen, Ari; De Vogli, Roberto; Heponiemi, Tarja; Linna, Anne; Pentti, Jaana; Vahtera, Jussi

    2008-01-01

    To investigate whether low perceived organisational injustice predicts heavy drinking among employees. Data from a prospective occupational cohort study, the 10-Town Study, on 15 290 Finnish public sector local government employees nested in 2432 work units, were used. Non-drinkers were excluded. Procedural, interactional and total organisational justice, heavy drinking (>/=210 g of absolute alcohol per week) and other psychosocial factors were determined by means of questionnaire in 2000-2001 (phase 1) and 2004 (phase 2). Multilevel logistic regression analyses taking into account the hierarchical structure of the data were conducted and adjustments were made for sex, age, socio-economic status, marital status, baseline heavy drinking, psychological distress and other psychosocial risk factors such as job strain and effort/reward imbalance. After adjustments, participants who reported low procedural justice at phase 1 were approximately 1.2 times more likely to be heavy drinkers at phase 2 compared with their counterparts reporting high justice. Low perceived justice in interpersonal treatment and low perceived total organisational justice were associated with increased prevalence of heavy drinking only in the model adjusted for sociodemographics. This is the first longitudinal study to show that low procedural justice is weakly associated with an increased likelihood of heavy drinking.

  14. Methadone and perinatal outcomes: a retrospective cohort study.

    LENUS (Irish Health Repository)

    Cleary, Brian J

    2012-02-01

    OBJECTIVE: The purpose of this study was to examine the relationship among methadone maintenance treatment, perinatal outcomes, and neonatal abstinence syndrome. STUDY DESIGN: This was a retrospective cohort study of 61,030 singleton births at a large maternity hospital from 2000-2007. RESULTS: There were 618 (1%) women on methadone at delivery. Methadone-exposed women were more likely to be younger, to book late for antenatal care, and to be smokers. Methadone exposure was associated with an increased risk of very preterm birth <32 weeks of gestation (adjusted odds ratio [aOR], 2.47; 95% confidence interval [CI], 1.40-4.34), being small for gestational age <10th percentile (aOR, 3.27; 95% CI, 2.49-4.28), admission to the neonatal unit (aOR, 9.14; 95% CI, 7.21-11.57), and diagnosis of a major congenital anomaly (aOR, 1.94; 95% CI, 1.10-3.43). There was a dose-response relationship between methadone and neonatal abstinence syndrome. CONCLUSION: Methadone exposure is associated with an increased risk of adverse perinatal outcomes, even when known adverse sociodemographic factors have been accounted for. Methadone dose at delivery is 1 of the determinants of neonatal abstinence syndrome.

  15. Risk factors associated with postoperative seizures in patients undergoing cardiac surgery who received tranexamic acid: A case-control study

    Directory of Open Access Journals (Sweden)

    Felix R Montes

    2012-01-01

    Full Text Available Antifibrinolytic agents are used during cardiac surgery to minimize bleeding and reduce exposure to blood products. Several reports suggest that tranexamic acid (TA can induce seizure activity in the postoperative period. To examine factors associated with postoperative seizures in patients undergoing cardiac surgery who received TA. University-affiliated hospital. Case-control study. Patients undergoing cardiac surgery with cardiopulmonary bypass (CPB between January 2008 and December 2009 were identified. During this time, all patients undergoing heart surgery with CPB received TA. Cases were defined as patients who developed seizures that required initiation of anticonvulsive therapy within 48 h of surgery. Exclusion criteria included subjects with preexisting epilepsy and patients in whom the convulsive episode was secondary to a new ischemic lesion on brain imaging. Controls who did not develop seizures were randomly selected from the initial cohort. From an initial cohort of 903 patients, we identified 32 patients with postoperative seizures. Four patients were excluded. Twenty-eight cases and 112 controls were analyzed. Cases were more likely to have a history of renal impairment and higher preoperative creatinine values compared with controls (1.39 ± 1.1 vs. 0.98 ± 0.02 mg/dL, P = 0.02. Significant differences in the intensive care unit, postoperative and total lengths of stay were observed. An association between high preoperative creatinine value and postoperative seizure was identified. TA may be associated with the development of postoperative seizures in patients with renal dysfunction. Doses of TA should be reduced or even avoided in this population.

  16. Qingdao Port Cardiovascular Health Study: a prospective cohort study.

    Science.gov (United States)

    Spatz, Erica S; Jiang, Xianyan; Lu, Jiapeng; Masoudi, Frederick A; Spertus, John A; Wang, Yongfei; Li, Xi; Downing, Nicholas S; Nasir, Khurram; Du, Xue; Li, Jing; Krumholz, Harlan M; Liu, Xiancheng; Jiang, Lixin

    2015-12-09

    In China, efforts are underway to respond to rapidly increasing rates of heart disease and stroke. Yet the epidemiology of cardiovascular disease in China may be different from that of other populations. Thus, there is a critical need for population-based studies that provide insight into the risk factors, incidence and outcomes of cardiovascular disease in China. The Qingdao Port Cardiovascular Health Study is designed to investigate the burden of cardiovascular disease and the sociodemographic, biological, environmental and clinical risk factors associated with disease onset and outcomes. For this study, from 2000 through 2013, 32,404 employees aged 18 years or older were recruited from the Qingdao Port Group in China, contributing 221,923 annual health assessments. The mean age at recruitment was 43.4 (SD=12.9); 79% were male. In this ongoing study, annual health assessments, governed by extensive quality control mechanisms, include a questionnaire (capturing demographic and employment information, medical history, medication use, health behaviours and health outcomes), physical examination, ECG, and blood and urine analysis. Additional non-annual assessments include an X-ray, echocardiogram and carotid ultrasound; bio-samples will be collected for future genetic and proteomic analyses. Cardiovascular outcomes are accessed via self-report and are actively being verified with medical insurance claims; efforts are underway to adjudicate outcomes with hospital medical records. Early findings reveal a significant increase in cardiovascular risk factors from 2000 to 2010 (hypertension: 26.4-39.4%; diabetes: 3.3-8.9%; hyperlipidaemia: 5.0-33.6%; body mass index >28 m/kg(2): 14.1-18.6%). We aim to generate novel insights about the epidemiology and outcomes of cardiovascular disease in China, with specific emphasis on the potentially unique risk factor profiles of this Chinese population. Knowledge generated will be disseminated in the peer-reviewed literature, and will

  17. Qingdao Port Cardiovascular Health Study: a prospective cohort study

    Science.gov (United States)

    Spatz, Erica S; Jiang, Xianyan; Lu, Jiapeng; Masoudi, Frederick A; Spertus, John A; Wang, Yongfei; Li, Xi; Downing, Nicholas S; Nasir, Khurram; Du, Xue; Li, Jing; Krumholz, Harlan M; Liu, Xiancheng; Jiang, Lixin

    2015-01-01

    Purpose In China, efforts are underway to respond to rapidly increasing rates of heart disease and stroke. Yet the epidemiology of cardiovascular disease in China may be different from that of other populations. Thus, there is a critical need for population-based studies that provide insight into the risk factors, incidence and outcomes of cardiovascular disease in China. The Qingdao Port Cardiovascular Health Study is designed to investigate the burden of cardiovascular disease and the sociodemographic, biological, environmental and clinical risk factors associated with disease onset and outcomes. Participants For this study, from 2000 through 2013, 32 404 employees aged 18 years or older were recruited from the Qingdao Port Group in China, contributing 221 923 annual health assessments. The mean age at recruitment was 43.4 (SD=12.9); 79% were male. In this ongoing study, annual health assessments, governed by extensive quality control mechanisms, include a questionnaire (capturing demographic and employment information, medical history, medication use, health behaviours and health outcomes), physical examination, ECG, and blood and urine analysis. Additional non-annual assessments include an X-ray, echocardiogram and carotid ultrasound; bio-samples will be collected for future genetic and proteomic analyses. Cardiovascular outcomes are accessed via self-report and are actively being verified with medical insurance claims; efforts are underway to adjudicate outcomes with hospital medical records. Findings to date Early findings reveal a significant increase in cardiovascular risk factors from 2000 to 2010 (hypertension: 26.4–39.4%; diabetes: 3.3–8.9%; hyperlipidaemia: 5.0–33.6%; body mass index >28 m/kg2: 14.1–18.6%). Future Plans We aim to generate novel insights about the epidemiology and outcomes of cardiovascular disease in China, with specific emphasis on the potentially unique risk factor profiles of this Chinese population. Knowledge

  18. Maternal thyroid function and child educational attainment: prospective cohort study.

    Science.gov (United States)

    Nelson, Scott M; Haig, Caroline; McConnachie, Alex; Sattar, Naveed; Ring, Susan M; Smith, George D; Lawlor, Debbie A; Lindsay, Robert S

    2018-02-20

    To determine if first trimester maternal thyroid dysfunction is a critical determinant of child scholastic performance and overall educational attainment. Prospective cohort study. Avon Longitudinal Study of Parents and Children cohort in the UK. 4615 mother-child pairs with an available first trimester sample (median 10 weeks gestation, interquartile range 8-12). Free thyroxine, thyroid stimulating hormone, and thyroid peroxidase antibodies assessed as continuous measures and the seven clinical categories of maternal thyroid function. Five age-specific national curriculum assessments in 3580 children at entry stage assessment at 54 months, increasing up to 4461 children at their final school assessment at age 15. No strong evidence of clinically meaningful associations of first trimester free thyroxine and thyroid stimulating hormone levels with entry stage assessment score or Standard Assessment Test scores at any of the key stages was found. Associations of maternal free thyroxine or thyroid stimulating hormone with the total number of General Certificates of Secondary Education (GCSEs) passed (range 0-16) were all close to the null: free thyroxine, rate ratio per pmol/L 1.00 (95% confidence interval 1.00 to 1.01); and thyroid stimulating hormone, rate ratio 0.98 (0.94 to 1.02). No important relationship was observed when more detailed capped scores of GCSEs allowing for both the number and grade of pass or when language, mathematics, and science performance were examined individually or when all educational assessments undertaken by an individual from school entry to leaving were considered. 200 (4.3%) mothers were newly identified as having hypothyroidism or subclinical hypothyroidism and 97 (2.1%) subclinical hyperthyroidism or hyperthyroidism. Children of mothers with thyroid dysfunction attained an equivalent number of GCSEs and equivalent grades as children of mothers with euthyroidism. Maternal thyroid dysfunction in early pregnancy does not have a

  19. Herbal Medicines and Ovarian Hyperstimulation Syndrome: A Retrospective Cohort Study

    Directory of Open Access Journals (Sweden)

    Athar Rasekhjahromi

    2016-01-01

    Full Text Available Background. The aim of this study was to assess the association between herbal medication and OHSS. Methods. This retrospective cohort study was conducted with 101 polycystic ovary syndrome patients. 66 patients took conventional pharmacological medications and 35 took herbal medications. Data were analyzed by statistical test including Fisher’s Exact and binominal logistic regression. P<0.05 was considered significant. Results. Of the 101 females, 53 were married and 48 were single. There was no significant association between the groups in marriage. No significant association was found in mean age between the two groups (23.9 ± 5.8 years in the control group versus 26.3 ± 6.7 years in the case group. There was a significant difference between the two groups .After adding the dependent (OHSS prevalence and independent (marriage and group variables into the model, the Hosmer-Lemeshow test showed suitability. Variances analyzed with this model ranged between 29.4% and 40.7%. Conclusion. The indiscriminate use of herbs is correlated with OHSS. Because patients increasingly consume herbs, they should be aware of potential side effects. However, appropriate dosages of herbs could be obtained for use instead of conventional treatments, which often have side effects.

  20. Reclassification and treatment of odontogenic keratocysts: A cohort study

    Directory of Open Access Journals (Sweden)

    Ophir Ribeiro-Júnior

    2017-12-01

    Full Text Available Abstract: The odontogenic keratocyst (OKC is a recurrent cyst that has been recently reclassified from an odontogenic tumor to an odontogenic cyst. The aim of the present study was to investigate its treatment and address issues related to its association with nevoid basal cell carcinoma syndrome (NBCCS. Lesions from the cohort of patients included in the present study consisted of 40 OKCs, of which 27 lesions were treated by enucleation (GE and 13 underwent decompression (GD. Complementary treatment occurred in 38 (95% lesions, of which 10 underwent isolated peripheral ostectomy (GO and 28 underwent peripheral ostectomy combined with Carnoy's solution (GC. Thirteen lesions were associated with NBCCS (GS, while the others (n=27 were non-syndromic lesions (GnS. The recurrence-free periods (RFP in the sample groups were compared using the Kaplan-Meier function and log-rank test at a significance level of 5% (p 0.05 or increased CRR for the decompression (15.4% over five years. Application of Carnoy's solution did not increase the efficacy of the peripheral ostectomy, but was related to a CRR of 0% for the syndromic lesions over five years. Therefore, 1 decompression did not increase the recurrence risk; 2 peripheral ostectomy demonstrated a similar efficacy as the combination with Carnoy's solution; 3 the association of NBCCS did not seem to significantly influence OKC recurrence; and 4 syndromic lesions seem to behave in the same manner as non-syndromic lesions when submitted to complementary treatments.

  1. Moisture damage and asthma: a birth cohort study.

    Science.gov (United States)

    Karvonen, Anne M; Hyvärinen, Anne; Korppi, Matti; Haverinen-Shaughnessy, Ulla; Renz, Harald; Pfefferle, Petra I; Remes, Sami; Genuneit, Jon; Pekkanen, Juha

    2015-03-01

    Excess moisture and visible mold are associated with increased risk of asthma. Only a few studies have performed detailed home visits to characterize the extent and location of moisture damage and mold growth. Structured home inspections were performed in a birth cohort study when the children were 5 months old (on average). Children (N = 398) were followed up to the age of 6 years. Specific immunoglobulin E concentrations were determined at 6 years. Moisture damage and mold at an early age in the child's main living areas (but not in bathrooms or other interior spaces) were associated with the risk of developing physician-diagnosed asthma ever, persistent asthma, and respiratory symptoms during the first 6 years. Associations with asthma ever were strongest for moisture damage with visible mold in the child's bedroom (adjusted odds ratio: 4.82 [95% confidence interval: 1.29-18.02]) and in the living room (adjusted odds ratio: 7.51 [95% confidence interval: 1.49-37.83]). Associations with asthma ever were stronger in the earlier part of the follow-up and among atopic children. No consistent associations were found between moisture damage with or without visible mold and atopic sensitization. Moisture damage and mold in early infancy in the child's main living areas were associated with asthma development. Atopic children may be more susceptible to the effects of moisture damage and mold. Copyright © 2015 by the American Academy of Pediatrics.

  2. Prehospital tidal volume influences hospital tidal volume: A cohort study.

    Science.gov (United States)

    Stoltze, Andrew J; Wong, Terrence S; Harland, Karisa K; Ahmed, Azeemuddin; Fuller, Brian M; Mohr, Nicholas M

    2015-06-01

    The purposes of the study are to describe current practice of ventilation in a modern air medical system and to measure the association of ventilation strategy with subsequent ventilator care and acute respiratory distress syndrome (ARDS). Retrospective observational cohort study of intubated adult patients (n = 235) transported by a university-affiliated air medical transport service to a 711-bed tertiary academic center between July 2011 and May 2013. Low tidal volume ventilation was defined as tidal volumes less than or equal to 8 mL/kg predicted body weight. Multivariable regression was used to measure the association between prehospital tidal volume, hospital ventilation strategy, and ARDS. Most patients (57%) were ventilated solely with bag valve ventilation during transport. Mean tidal volume of mechanically ventilated patients was 8.6 mL/kg predicted body weight (SD, 0.2 mL/kg). Low tidal volume ventilation was used in 13% of patients. Patients receiving low tidal volume ventilation during air medical transport were more likely to receive low tidal volume ventilation in the emergency department (P tidal volume (P = .840). Low tidal volume ventilation was rare during air medical transport. Air transport ventilation strategy influenced subsequent ventilation but was not associated with ARDS. Copyright © 2015 Elsevier Inc. All rights reserved.

  3. Biomarkers in differentiating clinical dengue cases: A prospective cohort study

    Directory of Open Access Journals (Sweden)

    Gary Kim Kuan Low

    2015-12-01

    Full Text Available Objective: To evaluate five biomarkers (neopterin, vascular endothelial growth factor-A, thrombomodulin, soluble vascular cell adhesion molecule 1 and pentraxin 3 in differentiating clinical dengue cases. Methods: A prospective cohort study was conducted whereby the blood samples were obtained at day of presentation and the final diagnosis were obtained at the end of patients’ follow-up. All patients included in the study were 15 years old or older, not pregnant, not infected by dengue previously and did not have cancer, autoimmune or haematological disorder. Median test was performed to compare the biomarker levels. A subgroup Mann-Whitney U test was analysed between severe dengue and non-severe dengue cases. Monte Carlo method was used to estimate the 2-tailed probability (P value for independent variables with unequal number of patients. Results: All biomarkers except thrombomodulin has P value < 0.001 in differentiating among the healthy subjects, non-dengue fever, dengue without warning signs and dengue with warning signs/severe dengue. Subgroup analysis for all the biomarkers between severe dengue and non-severe dengue cases was not statistically significant except vascular endothelial growth factor-A (P < 0.05. Conclusions: Certain biomarkers were able to differentiate the clinical dengue cases. This could be potentially useful in classifying and determining the severity of dengue infected patients in the hospital.

  4. Optimization of Inflammatory Bowel Disease Cohort Studies in Asia.

    Science.gov (United States)

    Leung, Wai K

    2015-07-01

    With the incidence of inflammatory bowel disease (IBD) increasing rapidly in many Asian countries, including Hong Kong, it is important that patient characteristics are better understood. For example, are the phenotypes, behaviors, complications, and even treatment responses found in Asian patients similar to those of their Western counterparts? To formally address these questions, a properly designed local cohort study is needed. Whilst IBD is still relatively uncommon in Asia, the establishment of a local IBD registry will significantly contribute to the answering of these questions. The Hong Kong IBD registry was established to fill the gap in the understanding of IBD patients, and to foster research into IBD in Hong Kong. The Hong Kong IBD registry is a territory-wide registry that includes all public hospitals in Hong Kong. We included all IBD patients who were currently receiving medical care at these hospitals. With the help of the central computer medical record system of the Hospital Authority of Hong Kong, all clinical events, medications usage, endoscopy records, and laboratory results of patients in the registry were captured. Apart from data collection, the registry is also establishing a bio-specimen bank of blood and stool samples of IBD patients for future research. The IBD registry is a very useful platform for population-based studies on IBD in Asia.

  5. Parental separation and pediatric cancer: a Danish cohort study.

    Science.gov (United States)

    Grant, Sally; Carlsen, Kathrine; Bidstrup, Pernille Envold; Bastian, Gro Samsø; Lund, Lasse Wegener; Dalton, Susanne Oksbjerg; Johansen, Christoffer

    2012-05-01

    The purpose of this study was to determine the risk for separation (ending cohabitation) of the parents of a child with a diagnosis of cancer. In a nationwide cohort, we compared the risk for ending cohabitation of the parents of 2450 children (aged 0-20 years) given a diagnosis of cancer with the risk of parents of 44 853 randomly selected, gender- and age-matched cancer-free children. We adjusted for socioeconomic position and demographic factors. Rate ratios and 95% confidence intervals for separation were estimated in a Cox proportional hazards model. The parents of children with cancer did not have a higher risk for separation than the general population (rate ratio: 1.00 [95% confidence interval: 0.91-1.10]). Separate analyses according to type of cancer and survival of the child similarly yielded null results. Experiencing cancer in a child does not seem to be a risk factor for separation. Our study will allow clinicians to reassure parents and to support them in facing the trauma of cancer in their child.

  6. Efficacy of a high-observation protocol in major head and neck cancer surgery: A prospective study.

    Science.gov (United States)

    Barber, Brittany; Harris, Jeffrey; Shillington, Cameron; Rychlik, Shannon; Dort, Joseph; Meier, Michael; Estey, Angela; Elwi, Adam; Wickson, Patty; Buss, Michael; Zygun, David; Ansari, Kal; Biron, Vincent; O'Connell, Daniel; Seikaly, Hadi

    2017-08-01

    The purpose of this study was to optimize an existing clinical care pathway (CCP) for head and neck cancer with a high-observation protocol (HOP) and to determine the effect on length of intensive care unit (ICU) admission and length of stay in hospital (LOS). The HOP mandated initiation of spontaneous breathing trials before the conclusion of the surgery, weaning of sedation, and limiting mechanical ventilation. All patients with head and neck cancer undergoing primary surgery on the HOP were compared to a historical cohort regarding length of ICU admission, ICU readmissions, and LOS. Ninety-six and 52 patients were observed in "historical" and "HOP" cohorts. The length of ICU admission (1.9 vs 1.2 days; p = .021), LOS (20.3 vs 14.1 days; p = .020), and ICU readmissions (10.4% vs 1.9%; p = .013) were significantly decreased in the "HOP" cohort. Rapid weaning of sedation and limiting mechanical ventilation may contribute to a shorter length of ICU admission and LOS, as well as decreased ICU readmissions. © 2017 Wiley Periodicals, Inc. Head Neck 39: 1689-1695, 2016. © 2017 Wiley Periodicals, Inc.

  7. Younger age as a prognostic indicator in breast cancer: A cohort study

    LENUS (Irish Health Repository)

    Kheirelseid, Elrasheid A.H.

    2011-08-28

    Abstract Background The debate continues as to whether younger women who present with breast cancer have a more aggressive form of disease and a worse prognosis. The objectives of this study were to determine the incidence of breast cancer in women under 40 years old and to analyse the clinicopathological characteristics and outcome compared to an older patient cohort. Methods Data was acquired from a review of charts and the prospectively reviewed GUH Department of Surgery database. Included in the study were 276 women diagnosed with breast cancer under the age of forty and 2869 women over forty. For survival analysis each women less than 40 was matched with two women over forty for both disease stage and grade. Results The proportion of women diagnosed with breast cancer under the age of forty in our cohort was 8.8%. In comparison to their older counterparts, those under forty had a higher tumour grade (p = 0.044) and stage (p = 0.046), a lower incidence of lobular tumours (p < 0.001), higher estrogen receptor negativity (p < 0.001) and higher HER2 over-expression (p = 0.002); there was no statistical difference as regards tumour size (p = 0.477). There was no significant difference in overall survival (OS) for both groups; and factors like tumour size (p = 0.026), invasion (p = 0.026) and histological type (p = 0.027), PR (p = 0.031) and HER2 (p = 0.002) status and treatment received were independent predictors of OS Conclusion Breast cancer in younger women has distinct histopathological characteristics; however, this does not result in a reduced survival in this population.

  8. Younger age as a prognostic indicator in breast cancer: A cohort study

    International Nuclear Information System (INIS)

    H Kheirelseid, Elrasheid A; Boggs, Jennifer ME; Curran, Catherine; Glynn, Ronan W; Dooley, Cara; Sweeney, Karl J; Kerin, Michael J

    2011-01-01

    The debate continues as to whether younger women who present with breast cancer have a more aggressive form of disease and a worse prognosis. The objectives of this study were to determine the incidence of breast cancer in women under 40 years old and to analyse the clinicopathological characteristics and outcome compared to an older patient cohort. Data was acquired from a review of charts and the prospectively reviewed GUH Department of Surgery database. Included in the study were 276 women diagnosed with breast cancer under the age of forty and 2869 women over forty. For survival analysis each women less than 40 was matched with two women over forty for both disease stage and grade. The proportion of women diagnosed with breast cancer under the age of forty in our cohort was 8.8%. In comparison to their older counterparts, those under forty had a higher tumour grade (p = 0.044) and stage (p = 0.046), a lower incidence of lobular tumours (p < 0.001), higher estrogen receptor negativity (p < 0.001) and higher HER2 over-expression (p = 0.002); there was no statistical difference as regards tumour size (p = 0.477). There was no significant difference in overall survival (OS) for both groups; and factors like tumour size (p = 0.026), invasion (p = 0.026) and histological type (p = 0.027), PR (p = 0.031) and HER2 (p = 0.002) status and treatment received were independent predictors of OS Breast cancer in younger women has distinct histopathological characteristics; however, this does not result in a reduced survival in this population

  9. Breast conserving surgery versus mastectomy

    DEFF Research Database (Denmark)

    Christiansen, Peer; Carstensen, Stina Lyck; Ejlertsen, Bent

    2018-01-01

    Background: Observational studies have pointed at a better survival after breast conserving surgery (BCS) compared with mastectomy. The aim of the present study was to evaluate whether this remains true when more extensive tumor characteristics and treatment data were included. Methods: The cohort...... included patients registered after primary surgery for early invasive breast cancer in the database of the Danish Breast Cancer Cooperative Group, in the period 1995–2012. The cohort was divided into three groups: (i) patients who primarily had a mastectomy, (ii) patients treated by BCS, and (iii) patients...

  10. Antibiotic prophylaxis adequacy in knee arthroplasty and surgical wound infection: Prospective cohort study.

    Science.gov (United States)

    Del-Moral-Luque, J A; Checa-García, A; López-Hualda, Á; Villar-Del-Campo, M C; Martínez-Martín, J; Moreno-Coronas, F J; Montejo-Sancho, J; Rodríguez-Caravaca, G

    Antibiotic prophylaxis is the most suitable tool for preventing surgical wound infection. This study evaluated adequacy of antibiotic prophylaxis in surgery for knee arthroplasty and its effect on surgical site infection. Prospective cohort study. We assessed the degree of adequacy of antibiotic prophylaxis, the causes of non-adequacy, and the effect of non-adequacy on surgical site infection. Incidence of surgical site infection was studied after a maximum incubation period of a year. To assess the effect of prophylaxis non-adequacy on surgical site infection we used the relative risk adjusted with the aid of a logistic regression model. The study covered a total of 1749 patients. Antibiotic prophylaxis was indicated in all patients and administered in 99.8% of cases, with an overall protocol adequacy of 77.6%. The principal cause of non-compliance was the duration of prescription of the antibiotics (46.5%). Cumulative incidence of surgical site infection was 1.43%. No relationship was found between prophylaxis adequacy and surgical infection (RR=1.15; 95% CI: .31-2.99) (P>.05). Surveillance and infection control programs enable risk factors of infection and improvement measures to be assessed. Monitoring infection rates enables us to reduce their incidence. Adequacy of antibiotic prophylaxis was high but could be improved. We did not find a relationship between prophylaxis adequacy and surgical site infection rate. Copyright © 2017 SECOT. Publicado por Elsevier España, S.L.U. All rights reserved.

  11. Nosocomial pneumonia in the ICU: a prospective cohort study.

    Science.gov (United States)

    Hyllienmark, Petra; Gårdlund, Bengt; Persson, Jan-Olov; Ekdahl, Karl

    2007-01-01

    Ventilator-associated pneumonia (VAP) is the most common intensive care unit (ICU)-acquired infection among patients requiring mechanical ventilation. A prospective surveillance programme of all patients has been implemented at the ICU, Karolinska University Hospital, Sweden since 2001. Within this programme, incidence and risk factors for ICU-acquired pneumonia and associated death over a 2-y period have been studied. Of 329 patients enrolled in the study, 221 required mechanical ventilation. 33 of 221 patients (15%) developed VAP, corresponding to a rate of 29 VAP/1000 ventilator d. Risk factors for VAP were aspiration (hazard ratio 3.79; 95% CI 1.48-9.68), recent surgery (HR 3.58; 95% CI 1.15-11.10) and trauma (HR 3.00; 95% CI 1.03-8.71). 11 patients of 33 (33%) with VAP died within 28 d compared to 46 of 288 (16%) without ICU-acquired pneumonia (odds ratio 2.73; 95% CI 0.97-7.63). We conclude that: 1) incidence of VAP was 15% and the most important risk factor was aspiration; 2) APACHE II score > or = 20 is a stronger predictor for poor outcome than VAP; 3) a minority of patients with APACHE II score > or = 20 develop VAP; and 4) continuous surveillance programmes are feasible and provide valuable data for improvement of quality of care.

  12. A three-year prospective longitudinal cohort study of medical students' attitudes toward anatomy teaching and their career aspirations.

    Science.gov (United States)

    Bhangu, Aneel; Boutefnouchet, Tarek; Yong, Xu; Abrahams, Peter; Joplin, Ruth

    2010-01-01

    Today's medical students are faced with numerous learning needs. Continuously developing curricula have reduced time for basic science subjects such as anatomy. This study aimed to determine the students' views on the relevance of anatomy teaching, anatomical knowledge, and the effect these have on their career choices. A Likert scale questionnaire was distributed to second year medical students [response rate 91% (n = 292/320)]. The same questionnaire was subsequently distributed to the cohort three years later when they were final year students [response rate 37% (n = 146/392)]. Students in both the cohorts of study agreed strongly that clinically correlated anatomical teaching was relevant to clinical practice (92% and 86% of second and final year respondents, respectively) and helped them during their clinical placements (73% and 92%, respectively). Only 28% of the second year and 31% of the final year students agreed that their anatomy teaching prepared them to interpret clinical images (P = 0.269). Only 14% of the final year students felt confident in their knowledge of anatomy. Of the final year students, 30% felt that they had enough opportunity to scrub in the operating room. Nearly half of those students who would consider surgery as a career (19%) think that they will eventually become surgeons (11%). This data suggests that modern anatomy curriculum should focus on clinical correlations and clinical image interpretation. Students would value more opportunities to participate in surgeries. Vertical integration of anatomy teaching throughout the full medical course may be useful. Copyright 2010 American Association of Anatomists.

  13. Feasibility of a cohort study on health risks caused by occupational exposure to radiofrequency electromagnetic fields

    DEFF Research Database (Denmark)

    Breckenkamp, Jürgen; Berg-Beckhoff, Gabriele; Münster, Eva

    2009-01-01

    , in addition, a cohort of amateur radio operators were considered. Based on expert ratings, literature reviews and our set of predefined criteria, three of the cohorts were identified as promising for further evaluation: the personnel (technicians) of medium/short wave broadcasting stations, amateur radio......BACKGROUND: The aim of this study was to examine the feasibility of performing a cohort study on health risks from occupational exposure to radiofrequency electromagnetic fields (RF-EMF) in Germany. METHODS: A set of criteria was developed to evaluate the feasibility of such a cohort study...... and mixture of exposures, e.g. plastic vapours), although exposure was highest in this occupational setting. The advantage of the cohort of amateur radio operators was the large number of persons it includes, while the advantage of the cohort of personnel working at broadcasting stations was the quality...

  14. Representativeness of the LifeLines Cohort Study.

    Directory of Open Access Journals (Sweden)

    Bart Klijs

    Full Text Available LifeLines is a large prospective population-based three generation cohort study in the north of the Netherlands. Different recruitment strategies were adopted: recruitment of an index population via general practitioners, subsequent inclusion of their family members, and online self-registration. Our aim was to investigate the representativeness of the adult study population at baseline and to evaluate differences in the study population according to recruitment strategy.Demographic characteristics of the LifeLines study population, recruited between 2006-2013, were compared with the total adult population in the north of the Netherlands as registered in the Dutch population register. Socioeconomic characteristics, lifestyle, chronic diseases, and general health were further compared with participants of the Permanent Survey of Living Conditions within the region (2005-2011, N = 6,093. Differences according to recruitment strategy were assessed.Compared with the population of the north of the Netherlands, LifeLines participants were more often female, middle aged, married, living in a semi-urban place and Dutch native. Adjusted for differences in demographic composition, in LifeLines a smaller proportion had a low educational attainment (5% versus 14% or had ever smoked (54% versus 66%. Differences in the prevalence of various chronic diseases and low general health scores were mostly smaller than 3%. The age profiles of the three recruitment groups differed due to age related inclusion criteria of the recruitment groups. Other differences according to recruitment strategy were small.Our results suggest that, adjusted for differences in demographic composition, the LifeLines adult study population is broadly representative for the adult population of the north of the Netherlands. The recruitment strategy had a minor effect on the level of representativeness. These findings indicate that the risk of selection bias is low and that risk estimates

  15. Dioxins and endometriosis: cohort study of women in West Virginia

    Energy Technology Data Exchange (ETDEWEB)

    Diliberto, J.; Birnbaum, L. [U.S. Environmental Protection Agency, NHEERL, ETD, Research Triangle Park, NC (United States); Staats, D.A. [West Virginia Dept. of Environmental Protection, Charleston, WV (United States); Staats, D.A.; Becker, J.; Jude, D.; Chouinard, S.C.; Smith, T. [Marshall Univ. Medical Center, Huntington, WV (United States); Sirinek, L. [West Virginia Dept. of Environmental Protection, Wheeling, WV (United States); Clark, G. [Xenobiotic Detection Systems Inc., Durham, NC (United States); Landy, R. [U.S. Environmental Protection Agency, Region 3, ESC, Ft. Meade, MD (United States)

    2004-09-15

    The women in this endometriosis/dioxin health study reside in the Kanawha/Ohio River Valley area of West Virginia and comprise a potential cluster (cohort) of individuals who have been exposed to dioxins (dioxin and dioxin-like chemicals) at background levels higher than those seen in other areas of the United States. The emissions from an unique constellation of chemical industries appear to have led to high levels of environmental dioxin contaminants. In addition, this area has a high incidence of endometriosis. Previous animal studies, both in nonhuman primates and rodents, have demonstrated a correlation between dioxin exposure and endometriosis. Human epidemiology studies have suggested an association but have not demonstrated a statistically significant correlation, possibly due to limitations in study design such as insufficient numbers, measurement of only TCDD rather than total equivalents to TCDD (TEQs), and/or lack of surgical ascertainment of endometriosis. The present study is addressing these issues. Thus, we have the unusual congruence of identified emission sources and high background levels of dioxins and a potentially related elevation of endometriosis. Endometriosis is a condition suffered by women in which the endometrial tissue, that usually lines the uterus, migrates to other areas. Most commonly it is found in the abdomen, bladder, ovaries or bowel. Patients with endometriosis experience pelvic pain, irregular bleeding, infertility and other problems. Immune suppression has been associated with severe endometriosis. This debilitating condition is a poorly understood disease. In the United States, this condition affects millions of women in their reproductive years and is showing up more frequently in very young women. Endometriosis will seriously impact future fertility and health care utilization. Data suggest that the rate of endometriosis in the Kanawha and Ohio River valleys is higher than is seen in other regions of the United States.

  16. The Netherlands Cohort Study – Meat Investigation Cohort; a population-based cohort over-represented with vegetarians, pescetarians and low meat consumers

    Science.gov (United States)

    2013-01-01

    Background Vegetarian diets have been associated with lower risk of chronic disease, but little is known about the health effects of low meat diets and the reliability of self-reported vegetarian status. We aimed to establish an analytical cohort over-represented with vegetarians, pescetarians and 1 day/week meat consumers, and to describe their lifestyle and dietary characteristics. In addition, we were able to compare self-reported vegetarians with vegetarians whose status has been confirmed by their response on the extensive food frequency questionnaire (FFQ). Study methods Embedded within the Netherlands Cohort Study (n = 120,852; including 1150 self-reported vegetarians), the NLCS-Meat Investigation Cohort (NLCS-MIC) was defined by combining all FFQ-confirmed-vegetarians (n = 702), pescetarians (n = 394), and 1 day/week meat consumers (n = 1,396) from the total cohort with a random sample of 2–5 days/week- and 6–7 days/week meat consumers (n = 2,965 and 5,648, respectively). Results Vegetarians, pescetarians, and 1 day/week meat consumers had more favorable dietary intakes (e.g. higher fiber/vegetables) and lifestyle characteristics (e.g. lower smoking rates) compared to regular meat consumers in both sexes. Vegetarians adhered to their diet longer than pescetarians and 1 day/week meat consumers. 75% of vegetarians with a prevalent cancer at baseline had changed to this diet after diagnosis. 50% of self-reported vegetarians reported meat or fish consumption on the FFQ. Although the misclassification that occurred in terms of diet and lifestyle when merely relying on self-reporting was relatively small, the impact on associations with disease risk remains to be studied. Conclusion We established an analytical cohort over-represented with persons at the lower end of the meat consumption spectrum which should facilitate prospective studies of major cancers and causes of death using ≥20.3 years of follow-up. PMID:24289207

  17. Temporomandibular joint dysfunction and orthognathic surgery: a retrospective study

    Directory of Open Access Journals (Sweden)

    Raoul Gwénael

    2010-11-01

    Full Text Available Abstract Background Relations between maxillo-mandibular deformities and TMJ disorders have been the object of different studies in medical literature and there are various opinions concerning the alteration of TMJ dysfunction after orthognathic surgery. The purpose of the present study was to evaluate TMJ disorders changes before and after orthognathic surgery, and to assess the risk of creating new TMJ symptoms on asymptomatic patients. Methods A questionnaire was sent to 176 patients operated at the Maxillo-Facial Service of the Lille's 2 Universitary Hospital Center (Chairman Pr Joël Ferri from 01.01.2006 to 01.01.2008. 57 patients (35 females and 22 males, age range from 16 to 65 years old, filled the questionnaire. The prevalence and the results on pain, sounds, clicking, joint locking, limited mouth opening, and tenseness were evaluated comparing different subgroups of patients. Results TMJ symptoms were significantly reduced after treatment for patients with pre-operative symptoms. The overall subjective treatment outcome was: improvement for 80.0% of patients, no change for 16.4% of patients, and an increase of symptoms for 3.6% of them. Thus, most patients were very satisfied with the results. However the appearance of new onset of TMJ symptoms is common. There was no statistical difference in the prevalence of preoperative TMJ symptoms and on postoperative results in class II compared to class III patients. Conclusions These observations demonstrate that: there is a high prevalence of TMJ disorders in dysgnathic patients; most of patients with preoperative TMJ signs and symptoms can improve TMJ dysfunction and pain levels can be reduced by orthognathic treatment; a percentage of dysgnathic patients who were preoperatively asymptomatic can develop TMJ disorders after surgery but this risk is low.

  18. Fertility Treatment and Childhood Epilepsy - a Nationwide Cohort Study

    DEFF Research Database (Denmark)

    Kettner, Laura Ozer; Kesmodel, Ulrik Schiøler; Ramlau-Hansen, Cecilia Høst

    2017-01-01

    BACKGROUND: Fertility treatment includes hormonal stimulation of the woman and in vitro manipulation of gametes and embryos that may influence prenatal brain development. We aimed to investigate the association between fertility treatment and childhood epilepsy, including specific types of treatm......BACKGROUND: Fertility treatment includes hormonal stimulation of the woman and in vitro manipulation of gametes and embryos that may influence prenatal brain development. We aimed to investigate the association between fertility treatment and childhood epilepsy, including specific types...... of treatment and indications, as well as subtypes of epilepsy. METHODS: In this nationwide birth cohort study, we included all pregnancies in Denmark resulting in live-born singletons, 1995-2003. Children conceived by fertility treatment and children developing epilepsy (until 2013) were identified from Danish...... national registers. RESULTS: A total of 565,116 pregnancies were included; 8,071 children (1.4%) developed epilepsy. Children conceived after ovulation induction or intrauterine insemination had a slightly higher risk of childhood epilepsy (hazard ratio [HR]: 1.15; 95% confidence interval [CI]: 1.00, 1...

  19. Life-course pathways to psychological distress: a cohort study.

    Science.gov (United States)

    von Stumm, Sophie; Deary, Ian J; Hagger-Johnson, Gareth

    2013-05-09

    Early life factors, like intelligence and socioeconomic status (SES), are associated with health outcomes in adulthood. Fitting comprehensive life-course models, we tested (1) the effect of childhood intelligence and SES, education and adulthood SES on psychological distress at midlife, and (2) compared alternative measurement specifications (reflective and formative) of SES. Prospective cohort study (the Aberdeen Children of the 1950s). Aberdeen, Scotland. 12 500 live-births (6282 boys) between 1950 and 1956, who were followed up in the years 2001-2003 at age 46-51 with a postal questionnaire achieving a response rate of 64% (7183). Psychological distress at age 46-51 (questionnaire). Childhood intelligence and SES and education had indirect effects on psychological distress at midlife, mediated by adult SES. Adult SES was the only variable to have a significant direct effect on psychological distress at midlife; the effect was stronger in men than in women. Alternative measurement specifications of SES (reflective and formative) resulted in greatly different model parameters and fits. Even though formative operationalisations of SES are theoretically appropriate, SES is better specified as reflective than as a formative latent variable in the context of life-course modelling.

  20. Carbon monoxide poisoning from waterpipe smoking: a retrospective cohort study.

    Science.gov (United States)

    Eichhorn, Lars; Michaelis, Dirk; Kemmerer, Michael; Jüttner, Björn; Tetzlaff, Kay

    2018-04-01

    Waterpipe smoking may increasingly account for unintentional carbon monoxide poisoning, a serious health hazard with high morbidity and mortality. We aimed at identifying waterpipe smoking as a cause for carbon monoxide poisoning in a large critical care database of a specialty care referral center. This retrospective cohort study included patients with a history of exposure to waterpipe smoking and carbon monoxide blood gas levels >10% or presence of clinical symptoms compatible with CO poisoning admitted between January 2013 and December 2016. Patients' initial symptoms and carbon monoxide blood levels were retrieved from records and neurologic status was assessed before and after hyperbaric oxygen treatment. Sixty-one subjects with carbon monoxide poisoning were included [41 males, 20 females; mean age 23 (SD ± 6) years; range 13-45] with an initial mean carboxyhemoglobin of 26.93% (SD ± 9.72). Most common symptoms included syncope, dizziness, headache, and nausea; 75% had temporary syncope. Symptoms were not closely associated with blood COHb levels. CO poisoning after waterpipe smoking may present in young adults with a wide variability of symptoms from none to unconsciousness. Therefore diagnosis should be suspected even in the absence of symptoms.

  1. Cohort study of HIV-positive and -negative methamphetamine users.

    Science.gov (United States)

    Spolsky, Vladimir W; Clague, Jason; Shetty, Vivek

    2018-04-20

    The effects of methamphetamine (MA) on caries have been well documented. Little, however, is known about its effects on the periodontium. The authors conducted this study to determine the prevalence and severity of periodontal disease in an urban population of HIV-positive MA users. This cross-sectional survey was conducted in one of the most populous urban areas of Los Angeles County, California, beset with high rates of MA use. Participants were recruited by a combination of street outreach methods, referral from drug treatment centers, and word of mouth. Participants were eligible if they were older than 18 years, spoke English or Spanish, used MA in the past 30 days, were willing to undergo a dental examination and psychosocial assessments, and were willing to provide a urine sample. Periodontal assessments were completed for 541 participants by 3 trained and calibrated dentists. The prevalence and severity of periodontal disease were high in this population of HIV-positive and -negative MA users. Cigarette smoking and age were identified as risk factors. The HIV-positive and -negative cohorts were remarkably similar, suggesting that their lifestyles contributed more to their destructive periodontal disease than their MA use. MA users are at high risk of developing destructive periodontal disease and badly broken-down teeth. Clinicians should plan accordingly for timely management of the patients' care, knowing that MA users have extensive periodontal and restorative treatment needs. Copyright © 2018 American Dental Association. Published by Elsevier Inc. All rights reserved.

  2. Predicting pulmonary tuberculosis in immigrants: a retrospective cohort study.

    Science.gov (United States)

    Heffernan, Courtney; Doroshenko, Alexander; Egedahl, Mary Lou; Barrie, James; Senthilselvan, Ambikaipakan; Long, Richard

    2018-04-01

    Our objective was to investigate whether pulmonary tuberculosis (PTB) can be predicted from features of a targeted medical history and basic laboratory investigations in immigrants. A retrospective cohort of 391 foreign-born adults referred to the Edmonton Tuberculosis Clinic (Edmonton, AB, Canada) was studied using multiple logistic regression analysis to predict PTB. Seven characteristics of disease were used as explanatory variables. Cross-validation assessed performance. Each predictor was tested on two outcomes: "culture-positive" and "smear-positive". Receiver operating characteristic (ROC) curves were generated and the area under the ROC curve (AUC) was quantified. Symptoms, subacute duration of symptoms, risk factors for reactivation of latent TB infection and anaemia were all associated with a positive culture (adjusted OR 1.79, 2.24, 1.72 and 2.28, respectively; p<0.05). Symptoms, inappropriate prescription of broad-spectrum antibiotics and a "typical" chest radiograph were associated with smear-positive PTB (adjusted OR 2.91, 1.55 and 12.34, respectively; p<0.05). ROC curve analysis was used to test e ach model, yielding AUC=0.91 for the outcome "culture-positive" disease and AUC=0.94 for the outcome "smear-positive" disease. PTB among the foreign-born can be predicted from a targeted medical history and basic laboratory investigations, raising the threshold of suspicion in settings where the disease is relatively rare.

  3. Obesity and the Incidence of Bladder Injury and Urinary Retention Following Tension-Free Vaginal Tape Procedure: Retrospective Cohort Study

    Directory of Open Access Journals (Sweden)

    Vladimir Revicky

    2011-01-01

    Full Text Available Background/Aims. Aim of the study was to establish an effect of obesity on the incidence of bladder injury or urinary retention following tension-free vaginal tape (TVT procedure. Methods. This was a retrospective cohort study based at the Norfolk and Norwich University Hospital in the UK. Study population included 342 cases of TVT procedures. Incidence of bladder injury was 4.7% (16/342. Rate of urinary retention was 9% (31/342. Body mass index (BMI, age, type of analgesia, concomitant prolapse repair, and previous surgery were factors studied. Univariate analysis was performed to establish a relationship between BMI and complications, followed by a multivariable regression analysis to adjust for age, concomitant surgery, type of analgesia, and previous surgery. Results. Neither univariate analysis nor multivariate regression analysis revealed any statistically significant influence of obesity on the incidence of bladder injury or urinary retention. Unadjusted odds ratios and adjusted odds ratios for bladder injury and urinary retention by BMI groups were OR 1.7296 CI 0.4818–6.2097; OR 1.3745 CI 0.5718–3.3043 and adj. OR 2.885 CI 0.603–13.8; adj. OR 1.299 CI 0.502–3.365. Conclusion. Obesity does not appear to influence the rate of bladder injury or urinary retention following TVT procedure.

  4. The use of new technologies in Cohort studies

    Directory of Open Access Journals (Sweden)

    Carlos Antonio Bruno da Silva

    2010-03-01

    élites de posicionamento (GPS para a localização de residências, o uso de coletas de DNA para comparações futuras, as bases de dados institucionais e governamentais são fontes de informações que abreviam, minimizam gastos e dão maior confiabilidade aos estudos de muito longa duração.Tem-se visto antigos trabalhos realizados há décadas sendo submetidos a novas avaliações estatísticas com o desenvolvimento de novas teorias e descobertas. Neste número da revista brasileira em promoção da saúde, acompanhamos o nascimento de uma nova coorte(14, que acompanhará a evolução dos determinantes de saúde de população de uma grande comunidade do Nordeste do Brasil.REFERÊNCIAS1. Morabia A, Guthold R. Wilhelm Weinberg’s 1913Large Retrospective Cohort Study: a rediscovery. Am JEpidemiol. 2007;165(7:727-33.2. Doll R. Cohort studies: history of the method. II.Retrospective cohort studies. Soz Praventivmed.2001;46(3:152-60. Erratum in: Soz Praventivmed2002;47(2:90.3. Dawber TR, Meadors GF, Moore Jr. FE. Epidemiologicalapproaches to heart disease: the Framingham Study.Am J Public Health Nations Health. 1951;41(3:279-81.4. Fonseca MGU, Peres F, Firmo JOA, Uchoa E.,Percepção de risco: maneiras de pensar e agirno manejo de agrotóxicos. Ciênc saúde coletiva[periódico na Internet]. 2007 Mar [acesso em 2010Maio 26]; 12(1:39-50. Disponível em: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-81232007000100009&lng=en&nrm=iso. doi: 10.1590/S1413-81232007000100009.5. Victora CG, Barros FC. Cohort profile: the 1982Pelotas (Brazil birth cohort study. Int J Epidemiol.2006;35(2:237-42.6. Armenian HK (editor. Applications of the case-controlmethod. Epidemiol Rev. 1994;16:1-164.7. Samet JM, Muñoz A. Evolution of the cohort study.Epidemiol Rev. 1998;20(1:1-14.8. Doll R. Cohort studies: history of the method. II.Retrospective cohort studies. Soz Praventivmed.2001;46(3:152-60. Erratum in: Soz Praventivmed2002;47(2:909. Lima-Costa MF, Barreto SM. Tipos de

  5. Regression analysis for secondary response variable in a case-cohort study.

    Science.gov (United States)

    Pan, Yinghao; Cai, Jianwen; Kim, Sangmi; Zhou, Haibo

    2017-12-29

    Case-cohort study design has been widely used for its cost-effectiveness. In any real study, there are always other important outcomes of interest beside the failure time that the original case-cohort study is based on. How to utilize the available case-cohort data to study the relationship of a secondary outcome with the primary exposure obtained through the case-cohort study is not well studied. In this article, we propose a non-parametric estimated likelihood approach for analyzing a secondary outcome in a case-cohort study. The estimation is based on maximizing a semiparametric likelihood function that is built jointly on both time-to-failure outcome and the secondary outcome. The proposed estimator is shown to be consistent, efficient, and asymptotically normal. Finite sample performance is evaluated via simulation studies. Data from the Sister Study is analyzed to illustrate our method. © 2017, The International Biometric Society.

  6. Perinatal depression in a cohort study on Iranian women

    Directory of Open Access Journals (Sweden)

    Gholam Reza Kheirabadi

    2010-01-01

    Full Text Available Background: Childbearing years in the women′s life are associated with the highest risk of depression. In this study depression in third trimester of pregnancy and after delivery was studied. Depressive symptom score and the proportion of mothers above a threshold were compared to indicate probable depressive disorder at each stage. Methods: This prospective cohort study was conducted in rural areas of Isfahan province of Iran from September 2007 to January 2008. Subjects were all in their third trimester and followed up from the beginning of the study to 6- 8 weeks postpartum. At all, 2156 pregnant women completed the self report questionnaires but 258 were excluded because they were incomplete and final analysis was done with 1898 samples. At the final stage the sample size was decreased to 1291. Results: The prevalence of depression based on BDI score greater than 20 in last trimester of pregnancy, was 22.8% and rate of depression based on EPD score greater than 12 between 6 to 8 weeks after delivery, was 26.3%. Incidence of Post Partum Depression (PPD in 6 to 8 weeks after delivery in those who were not clinically depressed during preg-nancy was 20.1%. Results showed that history of depression, unplanned pregnancy, being housewife and having 3 or more children had significant relation with ante partum depression. Conclusions: Two main risk factors for post partum depression are previous history of depression and depression during current pregnancy. It is important to assess these variables during pregnancy in order to facilitate timely identifi-cation of women at risk.

  7. Psychological characteristics of chronic depression: a longitudinal cohort study.

    Science.gov (United States)

    Wiersma, Jenneke E; van Oppen, Patricia; van Schaik, Digna J F; van der Does, A J Willem; Beekman, Aartjan T F; Penninx, Brenda W J H

    2011-03-01

    Few studies have investigated the importance of psychological characteristics for chronicity of depression. Knowledge about psychological differences between chronically depressed persons and nonchronically depressed persons may help to improve treatment of chronic depression. This is the first study to simultaneously compare in large samples various psychological characteristics between chronically depressed and nonchronically depressed adults. Baseline data were drawn from the Netherlands Study of Depression and Anxiety (NESDA), an ongoing longitudinal cohort study aimed at examining the long-term course of depressive and anxiety disorders in different health care settings and phases of illness. Participants were aged 18 to 65 years at the baseline assessment in 2004-2007 and had a current diagnosis of DSM-IV major depressive disorder (N = 1,002). Chronicity of depression was defined as being depressed for 24 months or more in the past 4 to 5 years. The chronicity criterion was fulfilled by 31% (n = 312). The NEO Five-Factor Inventory measured the 5 personality domains, the Leiden Index of Depression Sensitivity-Revised was used to measure cognitive reactivity (eg, hopelessness, rumination), and the Mastery Scale measured external locus of control. Compared to the nonchronically depressed persons, the chronically depressed persons reported significantly higher levels of neuroticism (OR = 1.81; 95% CI, 1.55-2.12; P testing these variables multivariably, the odds of chronic depression were significantly increased among those with low extraversion (OR = 0.73; 95% CI, 0.61-0.88; P = .001), high rumination (OR = 1.24; 95% CI, 1.01-1.53; P = .04), and high external locus of control (OR = 1.48; 95% CI, 1.21-1.80; P psychological characteristics for chronicity of depression. These findings provide suggestions for more specific interventions, focused on extraversion, rumination, and external locus of control, in the treatment of chronic depression. © Copyright 2011

  8. Alcohol and ovarian cancer risk: Results from the Netherlands Cohort Study

    NARCIS (Netherlands)

    Schouten, L.J.; Zeegers, M.P.A.; Goldbohm, R.A.; Brandt, P.A. van den

    2004-01-01

    Objective: To study alcohol consumption in relation to ovarian cancer risk in a prospective cohort study. Methods: The Netherlands Cohort Study on diet and cancer was initiated in 1986. A self-administered questionnaire on dietary habits and other risk factors for cancer was completed by 62,573

  9. Isolated optic nerve gliomas: a multicenter historical cohort study.

    Science.gov (United States)

    Shofty, Ben; Ben-Sira, Liat; Kesler, Anat; Jallo, George; Groves, Mari L; Iyer, Rajiv R; Lassaletta, Alvaro; Tabori, Uri; Bouffet, Eric; Thomale, Ulrich-Wilhelm; Hernáiz Driever, Pablo; Constantini, Shlomi

    2017-12-01

    OBJECTIVE Isolated optic nerve gliomas (IONGs) constitute a rare subgroup of optic pathway gliomas (OPGs). Due to the rarity of this condition and the difficulty in differentiating IONGs from other types of OPGs in most clinical series, little is known about these tumors. Currently, due to lack of evidence, they are managed the same as any other OPG. METHODS The authors conducted a multicenter retrospective cohort study aimed at determining the natural history of IONGs. Included were patients with clear-cut glioma of the optic nerve without posterior (chiasmatic/hypothalamic) involvement. At least 1 year of follow-up, 2 MRI studies, and 2 neuro-ophthalmological examinations were required for inclusion. RESULTS Thirty-six patients with 39 tumors were included in this study. Age at diagnosis ranged between 6 months and 16 years (average 6 years). The mean follow-up time was 5.6 years. Twenty-five patients had neurofibromatosis Type 1. During the follow-up period, 59% of the tumors progressed, 23% remained stable, and 18% (all with neurofibromatosis Type 1) displayed some degree of spontaneous regression. Fifty-one percent of the patients presented with visual decline, of whom 90% experienced further deterioration. Nine patients were treated with chemotherapy, 5 of whom improved visually. Ten patients underwent operation, and no local or distal recurrence was noted. CONCLUSIONS Isolated optic nerve gliomas are highly dynamic tumors. Radiological progression and visual deterioration occur in greater percentages than in the general population of patients with OPGs. Response to chemotherapy may be better in this group, and its use should be considered early in the course of the disease.

  10. Depression and incident diabetic foot ulcers: a prospective cohort study

    Science.gov (United States)

    Williams, Lisa H.; Rutter, Carolyn M.; Katon, Wayne J.; Reiber, Gayle E.; Ciechanowski, Paul; Heckbert, Susan R.; Lin, Elizabeth H.B.; Ludman, Evette J.; Oliver, Malia M.; Young, Bessie A.; Von Korff, Michael

    2010-01-01

    Objective To test whether depression is associated with an increased risk of incident diabetic foot ulcers. Methods The Pathways Epidemiologic Study is a population-based prospective cohort study of 4839 patients with diabetes in 2000–2007. The present analysis included 3474 adults with type 2 diabetes and no prior diabetic foot ulcers or amputations. Mean follow-up was 4.1 years. Major and minor depression assessed by the Patient Health Questionnaire-9 (PHQ-9) were the exposures of interest. The outcome of interest was incident diabetic foot ulcers. We computed the hazard ratio (HR) and 95% CI for incident diabetic foot ulcers, comparing patients with major and minor depression to those without depression and adjusting for sociodemographic characteristics, medical comorbidity, glycosylated hemoglobin (HbA1c), diabetes duration, insulin use, number of diabetes complications, body mass index, smoking status, and foot self-care. Sensitivity analyses also adjusted for peripheral neuropathy and peripheral arterial disease as defined by diagnosis codes. Results Compared to patients without depression, patients with major depression by PHQ-9 had a two-fold increase in the risk of incident diabetic foot ulcers (adjusted HR 2.00, 95% CI: 1.24, 3.25). There was no statistically significant association between minor depression by PHQ-9 and incident diabetic foot ulcers (adjusted HR 1.37, 95% CI: 0.77, 2.44). Conclusion Major depression by PHQ-9 is associated with a two-fold higher risk of incident diabetic foot ulcers. Future studies of this association should include better measures of peripheral neuropathy and peripheral arterial disease, which are possible confounders and/or mediators. PMID:20670730

  11. Mortality in patients with psoriasis. A retrospective cohort study.

    Science.gov (United States)

    Masson, Walter; Rossi, Emiliano; Galimberti, María Laura; Krauss, Juan; Navarro Estrada, José; Galimberti, Ricardo; Cagide, Arturo

    2017-06-07

    The immune and inflammatory pathways involved in psoriasis could favor the development of atherosclerosis, consequently increasing mortality. The objectives of this study were: 1) to assess the mortality of a population with psoriasis compared to a control group, and 2) to assess the prevalence of cardiovascular risk factors. A retrospective cohort was analyzed from a secondary database (electronic medical record). All patients with a diagnosis of psoriasis at 1-01-2010 were included in the study and compared to a control group of the same health system, selected randomly (1:1). Subjects with a history of cardiovascular disease were excluded from the study. A survival analysis was performed considering death from any cause as an event. Follow-up was extended until 30-06-2015. We included 1,481 subjects with psoriasis and 1,500 controls. Prevalence of cardiovascular risk factors was higher in the group with psoriasis. The average follow-up time was 4.6±1.7 years. Mortality was higher in psoriasis patients compared to controls (15.1 vs. 9.6 events per 1,000 person-year, PPsoriasis was seen to be significantly associated with increased mortality rates compared to the control group in the univariate analysis (HR 1.58, 95% CI 1.16-2.15, P=.004) and after adjusting for cardiovascular risk factors (HR 1.48, 95% CI 1.08-2.3, P=.014). In this population, patients with psoriasis showed a higher prevalence for the onset of cardiovascular risk factors as well as higher mortality rates during follow-up. Copyright © 2016 Elsevier España, S.L.U. All rights reserved.

  12. Changes in quality of life after elective surgery: an observational study comparing two measures.

    Science.gov (United States)

    Kronzer, Vanessa L; Jerry, Michelle R; Ben Abdallah, Arbi; Wildes, Troy S; McKinnon, Sherry L; Sharma, Anshuman; Avidan, Michael S

    2017-08-01

    Our main objective was to compare the change in a validated quality of life measure to a global assessment measure. The secondary objectives were to estimate the minimum clinically important difference (MCID) and to describe the change in quality of life by surgical specialty. This prospective cohort study included 7902 adult patients undergoing elective surgery. Changes in the Veterans RAND 12-Item Health Survey (VR-12), composed of a physical component summary (PCS) and a mental component summary (MCS), were calculated using preoperative and postoperative questionnaires. The latter also contained a global assessment question for quality of life. We compared PCS and MCS to the global assessment using descriptive statistics and weighted kappa. MCID was calculated using an anchor-based approach. Analyses were pre-specified and registered (NCT02771964). By the change in VR-12 scores, an equal proportion of patients experienced improvement and deterioration in quality of life (28% for PCS, 25% for MCS). In contrast, by the global assessment measure, 61% reported improvement, while only 10% reported deterioration. Agreement with the global assessment was slight for both PCS (kappa = 0.20, 57% matched) and MCS (kappa = 0.10, 54% matched). The MCID for the overall VR-12 score was approximately 2.5 points. Patients undergoing orthopedic surgery showed the most improvement in quality of life measures, while patients undergoing gastrointestinal/hepatobiliary or urologic surgery showed the most deterioration. Subjective global quality of life report does not agree well with a validated quality of life instrument, perhaps due to patient over-optimism.

  13. Laparoscopic excision of deep rectovaginal endometriosis in BSGE endometriosis centres: a multicentre prospective cohort study

    Science.gov (United States)

    Byrne, Dominic; Curnow, Tamara; Smith, Paul; Cutner, Alfred; Saridogan, Ertan; Clark, T Justin

    2018-01-01

    Objective To estimate the effectiveness and safety of laparoscopic surgical excision of rectovaginal endometriosis. Design A multicentre, prospective cohort study. Setting 51 hospitals accredited as specialist endometriosis centres. Participants 5162 women of reproductive age with rectovaginal endometriosis of which 4721 women had planned laparoscopic excision. Interventions Laparoscopic surgical excision of rectovaginal endometriosis requiring dissection of the pararectal space. Main outcome measures Standardised symptom questionnaires enquiring about chronic pelvic pain, bladder and bowel symptoms, analgesia use and quality of life (EuroQol) completed prior to surgery and at 6, 12 and 24 months postoperatively. Serious perioperative and postoperative complications including major haemorrhage, infection and visceral injury were recorded. Results At 6 months postsurgery, there were significant reductions in premenstrual, menstrual and non-cyclical pelvic pain, deep dyspareunia, dyschezia, low back pain and bladder pain. In addition, there were significant reductions in voiding difficulty, bowel frequency, urgency, incomplete emptying, constipation and passing blood. These reductions were maintained at 2 years, with the exception of voiding difficulty. Global quality of life significantly improved from a median pretreatment score of 55/100 to 80/100 at 6 months. There was a significant improvement in quality of life in all measured domains and in quality-adjusted life years. These improvements were sustained at 2 years. All analgesia use was reduced and, in particular, opiate use fell from 28.1% prior to surgery to 16.1% at 6 months. The overall incidence of complications was 6.8% (321/4721). Gastrointestinal complications (enterotomy, anastomotic leak or fistula) occurred in 52 (1.1%) operations and of the urinary tract (ureteric/bladder injury or leak) in 49 (1.0%) procedures. Conclusion Laparoscopic surgical excision of rectovaginal endometriosis

  14. Interleukin-1β gene variants are associated with QTc interval prolongation following cardiac surgery: a prospective observational study.

    Science.gov (United States)

    Kertai, Miklos D; Ji, Yunqi; Li, Yi-Ju; Mathew, Joseph P; Daubert, James P; Podgoreanu, Mihai V

    2016-04-01

    We characterized cardiac surgery-induced dynamic changes of the corrected QT (QTc) interval and tested the hypothesis that genetic factors are associated with perioperative QTc prolongation independent of clinical and procedural factors. All study subjects were ascertained from a prospective study of patients who underwent elective cardiac surgery during August 1999 to April 2002. We defined a prolonged QTc interval as > 440 msec, measured from 24-hr pre- and postoperative 12-lead electrocardiograms. The association of 37 single nucleotide polymorphisms (SNPs) in 21 candidate genes -involved in modulating arrhythmia susceptibility pathways with postoperative QTc changes- was investigated in a two-stage design with a stage I cohort (n = 497) nested within a stage II cohort (n = 957). Empirical P values (Pemp) were obtained by permutation tests with 10,000 repeats. After adjusting for clinical and procedural risk factors, we selected four SNPs (P value range, 0.03-0.1) in stage I, which we then tested in the stage II cohort. Two functional SNPs in the pro-inflammatory cytokine interleukin-1β (IL1β), rs1143633 (odds ratio [OR], 0.71; 95% confidence interval [CI], 0.53 to 0.95; Pemp = 0.02) and rs16944 (OR, 1.31; 95% CI, 1.01 to 1.70; Pemp = 0.04), remained independent predictors of postoperative QTc prolongation. The ability of a clinico-genetic model incorporating the two IL1B polymorphisms to classify patients at risk for developing prolonged postoperative QTc was superior to a clinical model alone, with a net reclassification improvement of 0.308 (P = 0.0003) and an integrated discrimination improvement of 0.02 (P = 0.000024). The results suggest a contribution of IL1β in modulating susceptibility to postoperative QTc prolongation after cardiac surgery.

  15. [A study on English loan words in French plastic surgery].

    Science.gov (United States)

    Hansson, E; Tegelberg, E

    2014-10-01

    The French language is less and less used as an international scientific language and many French researchers publish their work in English. Nowadays, Annales de Chirurgie Plastique Esthétique is the only international plastic surgical journal published completely in French. The use of English loan words in French plastic surgery has never been studied. The aim of this study was to describe the frequency and types of English loan words in French plastic surgery. A corpus consisting of all the articles in a number of Annales de Chirurgie Plastique Esthethique, chosen by default, was created. The frequency of English loan words was calculated and the types of words were analysed. The corpus contains 367 (0.8%) English loan words. Most of them are non-integrated loan words and calques. The majority of the plastic surgical loan words describe surgical techniques. The French plastic surgical language seems to be influenced by English. The usage of loan words does not always follow the recommendations and the usage is sometimes ambiguous. Copyright © 2014 Elsevier Masson SAS. All rights reserved.

  16. STATUS REPORT, BEGIN TO DEVELOP COMPLETE OPERATIONS MANUALS FOR THE COHORT: PREPARE TO IMPLEMENT A COHORT STUDY OF CHILDREN'S ENVIRONMENTAL HEALTH

    Science.gov (United States)

    As a precursor to the National Children's Study (NCS), the North Carolina Cohort Study (NC Cohort Study) will provide the opportunity to field test procedures to better inform the implementation of the NCS. In order to test some of the study hypotheses, it will be important to ob...

  17. Prospective cohort study of impulse control disorders in Parkinson's disease.

    Science.gov (United States)

    Bastiaens, Jesse; Dorfman, Benjamin J; Christos, Paul J; Nirenberg, Melissa J

    2013-03-01

    Impulse control disorders (ICDs) are potentially serious side effects of dopamine agonist therapy in Parkinson's disease (PD), but prospective data are lacking about their incidence, time course, and risk factors. This work was a 4-year, prospective cohort study of outpatients with PD and no previous ICDs (N = 164). All subjects treated with a dopamine agonist during the study were followed longitudinally for new-onset ICDs. Baseline characteristics were compared in groups with (ICD+) and without (ICD-) subsequent ICDs. Forty-six subjects were treated with a dopamine agonist, including 25 who were newly treated and 21 who received ongoing dopamine agonist therapy. Of these 46 subjects, 18 (39.1%) developed new-onset ICDs. The timing of ICD onset varied from 3.0 to 114.0 months (median, 23.0) after initiation of dopamine agonist therapy. Baseline demographic characteristics were similar in ICD+ and ICD- groups. At baseline, ICD+ subjects had a greater prevalence of motor complications (61.1% versus 25.0%; P = 0.01) than ICD- subjects, despite comparable total dopaminergic medication usage in both groups (median, 150.0 versus 150.0 levodopa equivalents; P = 0.61). Compared with ICD- subjects, ICD+ subjects had a greater baseline prevalence of caffeine use (100% versus 66.7%; P = 0.007) and higher lifetime prevalence of cigarette smoking (44.4% versus 14.3%; P = 0.04). Peak dopamine agonist doses were higher in ICD+ than ICD- subjects (median 300.0 versus 165.0 L-dopa equivalents; P = 0.03), but cumulative dopamine agonist exposure was similar in both groups. In summary, the timing of new-onset ICDs in PD is highly variable. Risk factors include cigarette smoking, caffeine use, motor complications, and higher peak dopamine agonist dosage. Copyright © 2013 Movement Disorders Society.

  18. Injury among adolescents with intellectual disability: A prospective cohort study.

    Science.gov (United States)

    White, David; McPherson, Lyn; Lennox, Nicholas; Ware, Robert S

    2018-04-12

    Injury is the leading cause of mortality and morbidity in adolescents worldwide, and injury rates have been shown to be higher among youth with intellectual disability. Despite this, injury among adolescents with intellectual disability remains poorly investigated. This study aimed to identify characteristics associated with injury among adolescents with intellectual disability living in the community. A cohort of adolescents with intellectual disability living in southern Queensland, Australia was investigated prospectively between January 2006 and June 2010. Personal characteristics were collected via postal questionnaire. Injury information, including mechanism and location of injury, was extracted from general practitioner records. The association between demographic, social and clinical characteristics of participants and episodes of injury was investigated using negative binomial regression. A total of 289 injuries were recorded from 432 participants over 1627.3 years of study-time. The overall annual injury incidence was 17.5 (95%CI 14.7, 20.9) per 100 person years. Presence of ADHD and less severe disability was associated with increased risk of injury. Down syndrome and reduced verbal communication capacity were associated with decreased risk of injury. Falls accounted for the highest single mechanism of injury (19.0%) with the majority (73.2%) of injuries involving either upper or lower limbs. ADHD is a co-morbidity that increases risk of injury among adolescents with intellectual disability. A critical component of injury prevention is avoidance of the great variety of environmental risk factors for injury relevant to this population. Copyright © 2018 Elsevier Ltd. All rights reserved.

  19. Abandonment of nicotine dependence treatment: A cohort study

    Directory of Open Access Journals (Sweden)

    Maritza Muzzi Cardozo Pawlina

    Full Text Available CONTEXT AND OBJECTIVE: Non-adherence to treatment is one of the hindering factors in the process of smoking cessation. This study aimed to compare sociodemographic characteristics, smoking status and motivation among smokers who maintained or abandoned treatment to stop smoking, and to analyze associations between sociodemographic factors and smoking. DESIGN AND SETTING: Cohort study on 216 smokers who were attended at healthcare units in Cuiabá, Mato Grosso. METHODS: The instruments used were the Fagerström, URICA and CAGE questionnaires. Data from the initial evaluation was analyzed using the two-proportion test (α < 0.05. The patients were monitored for six months and those who abandoned treatment were accounted for. Bivariate analysis was conducted, using crude prevalence ratios and 5% significance level (P < 0.05, with abandonment of treatment as the outcome variable. Associations with P < 0.20 were selected for multiple robust Poisson regression (RPa. RESULTS: The abandonment rate was 34.26%. Males and individuals in the 20-39 age group, in employment, with low motivation, with shorter time smoking and lower tobacco intake predominated in the dropout group. In the final model, gender (RPa 1.47; 95% CI: 1.03-2.10 and age group (RPa 3.77; 95% CI: 1.47-9.67 remained associated with abandonment. CONCLUSION: Males and individuals in the 20-39 age group, in employment, with low motivation, with shorter time smoking and lower tobacco intake more frequently abandoned the treatment. Male gender and younger age group were associated with abandonment of nicotine dependence treatment.

  20. Maternal Caffeine Consumption and Infant Nighttime Waking: Prospective Cohort Study

    Science.gov (United States)

    Santos, Iná S.; Matijasevich, Alicia

    2012-01-01

    OBJECTIVE: Coffee and other caffeinated beverages are commonly consumed in pregnancy. In adults, caffeine may interfere with sleep onset and have a dose-response effect similar to those seen during insomnia. In infancy, nighttime waking is a common event. With this study, we aimed to investigate if maternal caffeine consumption during pregnancy and lactation leads to frequent nocturnal awakening among infants at 3 months of age. METHODS: All children born in the city of Pelotas, Brazil, during 2004 were enrolled on a cohort study. Mothers were interviewed at delivery and after 3 months to obtain information on caffeine drinking consumption, sociodemographic, reproductive, and behavioral characteristics. Infant sleeping pattern in the previous 15 days was obtained from a subsample. Night waking was defined as an episode of infant arousal that woke the parents during nighttime. Multivariable analysis was performed by using Poisson regression. RESULTS: The subsample included 885 of the 4231 infants born in 2004. All but 1 mother consumed caffeine in pregnancy. Nearly 20% were heavy consumers (≥300 mg/day) during pregnancy and 14.3% at 3 months postpartum. Prevalence of frequent nighttime awakeners (>3 episodes per night) was 13.8% (95% confidence interval: 11.5%–16.0%). The highest prevalence ratio was observed among breastfed infants from mothers consuming ≥300 mg/day during the whole pregnancy and in the postpartum period (1.65; 95% confidence interval: 0.86–3.17) but at a nonsignificant level. CONCLUSIONS: Caffeine consumption during pregnancy and by nursing mothers seems not to have consequences on sleep of infants at the age of 3 months. PMID:22473365

  1. Influence of Handheld Mobiles on Parotid: A Cohort Study

    Directory of Open Access Journals (Sweden)

    Gracelin E Ranjitha

    2017-01-01

    Full Text Available Introduction: Mobile phones generate heat and radiofrequency radiation. The parotid gland is one potential target, because mobile phones are pressed against the side of the face where the gland is located. Aims and Objectives: To compare the effect of mobile phone radiation on parotid gland volume, systolic velocity, salivary flow rate, and protein concentration between the dominant and the nondominant side of mobile phone usage among heavy mobile phone users. Materials and Methods: Ultrasonography of the superior lobe of parotid was performed bilaterally to measure gland volume. Systolic velocity of the external carotid artery in gland was calculated bilaterally using color Doppler imaging. Saliva flow rate was measured bilaterally with modified Schrimer strip. Carlson-Crittenden device was used to collect 0.5 ml saliva sample from the duct and biuret assay was done to determine the protein concentration. Settings and Design: A cohort study was conducted with 50 undergraduate students of a dental college based on the inclusion and exclusion criteria. Statistical Analysis Used: Pearson correlation test was used to correlate and compare changes in the parameters of parotid gland and analyzed to a significant level of 0.05. Results: The volume, systolic velocity of blood flow of the external carotid artery, the salivary flow rate, and protein concentration of the parotid gland were significantly more by 11.9, 18, 23, and 8%, respectively, on the dominant side than the nondominant side of mobile phone usage. Conclusion: The study emphasized that prolonged mobile phone usage causes biological changes in parotid gland.

  2. Factors Influencing Hospital Stay for Pulmonary Embolism. A Cohort Study.

    Science.gov (United States)

    Rodríguez-Núñez, Nuria; Ruano-Raviña, Alberto; Abelleira, Romina; Ferreiro, Lucía; Lama, Adriana; González-Barcala, Francisco J; Golpe, Antonio; Toubes, María E; Álvarez-Dobaño, José M; Valdés, Luis

    2017-08-01

    The aim of this study was to identify factors influencing hospital stay due to pulmonary embolism. We performed a retrospective cohort study of patients hospitalized between 2010 and 2015. Patients were identified using information recorded in hospital discharge reports (ICD-9-CM codes 415.11 and 415.19). We included 965 patients with a median stay of 8 days (IQR 6-13 days). Higher scores on the simplified Pulmonary Embolism Severity Index (sPESI) were associated with increased probability of longer hospital stay. The probability of a hospital stay longer than the median was 8.65 (95% CI 5.42-13.79) for patients referred to the Internal Medicine Department and 1.54 (95% CI 1.07-2.24) for patients hospitalized in other departments, compared to those referred to the Pneumology Department. Patients with grade 3 on the modified Medical Research Council dyspnea scale had an odds ratio of 1.63 (95% CI: 1.07-2.49). The likelihood of a longer than median hospital stay was 1.72 (95% CI: 0.85-3.48) when oral anticoagulation (OAC) was initiated 2-3 days after admission, and 2.43 (95% CI: 1.16-5.07) when initiated at 4-5 days, compared to OAC initiation at 0-1 days. sPESI grade, the department of referral from the Emergency Department, the grade of dyspnea and the time of initiating OAC were associated with a longer hospital stay. Copyright © 2017 SEPAR. Publicado por Elsevier España, S.L.U. All rights reserved.

  3. Chest wall syndrome among primary care patients: a cohort study

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    Verdon François

    2007-09-01

    Full Text Available Abstract Background The epidemiology of chest pain differs strongly between outpatient and emergency settings. In general practice, the most frequent cause is the chest wall pain. However, there is a lack of information about the characteristics of this syndrome. The aims of the study are to describe the clinical aspects of chest wall syndrome (CWS. Methods Prospective, observational, cohort study of patients attending 58 private practices over a five-week period from March to May 2001 with undifferentiated chest pain. During a one-year follow-up, questionnaires including detailed history and physical exam, were filled out at initial consultation, 3 and 12 months. The outcomes were: clinical characteristics associated with the CWS diagnosis and clinical evolution of the syndrome. Results Among 24 620 consultations, we observed 672 cases of chest pain and 300 (44.6% patients had a diagnosis of chest wall syndrome. It affected all ages with a sex ratio of 1:1. History and sensibility to palpation were the keys for diagnosis. Pain was generally moderate, well localised, continuous or intermittent over a number of hours to days or weeks, and amplified by position or movement. The pain however, may be acute. Eighty-eight patients were affected at several painful sites, and 210 patients at a single site, most frequently in the midline or a left-sided site. Pain was a cause of anxiety and cardiac concern, especially when acute. CWS coexisted with coronary disease in 19 and neoplasm in 6. Outcome at one year was favourable even though CWS recurred in half of patients. Conclusion CWS is common and benign, but leads to anxiety and recurred frequently. Because the majority of chest wall pain is left-sided, the possibility of coexistence with coronary disease needs careful consideration.

  4. Chest wall syndrome among primary care patients: a cohort study.

    Science.gov (United States)

    Verdon, François; Burnand, Bernard; Herzig, Lilli; Junod, Michel; Pécoud, Alain; Favrat, Bernard

    2007-09-12

    The epidemiology of chest pain differs strongly between outpatient and emergency settings. In general practice, the most frequent cause is the chest wall pain. However, there is a lack of information about the characteristics of this syndrome. The aims of the study are to describe the clinical aspects of chest wall syndrome (CWS). Prospective, observational, cohort study of patients attending 58 private practices over a five-week period from March to May 2001 with undifferentiated chest pain. During a one-year follow-up, questionnaires including detailed history and physical exam, were filled out at initial consultation, 3 and 12 months. The outcomes were: clinical characteristics associated with the CWS diagnosis and clinical evolution of the syndrome. Among 24 620 consultations, we observed 672 cases of chest pain and 300 (44.6%) patients had a diagnosis of chest wall syndrome. It affected all ages with a sex ratio of 1:1. History and sensibility to palpation were the keys for diagnosis. Pain was generally moderate, well localised, continuous or intermittent over a number of hours to days or weeks, and amplified by position or movement. The pain however, may be acute. Eighty-eight patients were affected at several painful sites, and 210 patients at a single site, most frequently in the midline or a left-sided site. Pain was a cause of anxiety and cardiac concern, especially when acute. CWS coexisted with coronary disease in 19 and neoplasm in 6. Outcome at one year was favourable even though CWS recurred in half of patients. CWS is common and benign, but leads to anxiety and recurred frequently. Because the majority of chest wall pain is left-sided, the possibility of coexistence with coronary disease needs careful consideration.

  5. Chest wall syndrome among primary care patients: a cohort study

    Science.gov (United States)

    Verdon, François; Burnand, Bernard; Herzig, Lilli; Junod, Michel; Pécoud, Alain; Favrat, Bernard

    2007-01-01

    Background The epidemiology of chest pain differs strongly between outpatient and emergency settings. In general practice, the most frequent cause is the chest wall pain. However, there is a lack of information about the characteristics of this syndrome. The aims of the study are to describe the clinical aspects of chest wall syndrome (CWS). Methods Prospective, observational, cohort study of patients attending 58 private practices over a five-week period from March to May 2001 with undifferentiated chest pain. During a one-year follow-up, questionnaires including detailed history and physical exam, were filled out at initial consultation, 3 and 12 months. The outcomes were: clinical characteristics associated with the CWS diagnosis and clinical evolution of the syndrome. Results Among 24 620 consultations, we observed 672 cases of chest pain and 300 (44.6%) patients had a diagnosis of chest wall syndrome. It affected all ages with a sex ratio of 1:1. History and sensibility to palpation were the keys for diagnosis. Pain was generally moderate, well localised, continuous or intermittent over a number of hours to days or weeks, and amplified by position or movement. The pain however, may be acute. Eighty-eight patients were affected at several painful sites, and 210 patients at a single site, most frequently in the midline or a left-sided site. Pain was a cause of anxiety and cardiac concern, especially when acute. CWS coexisted with coronary disease in 19 and neoplasm in 6. Outcome at one year was favourable even though CWS recurred in half of patients. Conclusion CWS is common and benign, but leads to anxiety and recurred frequently. Because the majority of chest wall pain is left-sided, the possibility of coexistence with coronary disease needs careful consideration. PMID:17850647

  6. Menstrual Pattern following Tubal Ligation: A Historical Cohort Study

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    Shahideh Jahanian Sadatmahalleh

    2016-12-01

    Full Text Available Background: Tubal ligation (TL is recommended for women who have completed their family planning. The existence of the menstrual disorders following this procedure has been the subject of debate for decades. This study was conducted to identify the relationship between tubal ligation and menstrual disorders. Materials and Methods: A historical cohort study was carried out on 140 women undergoing tubal ligation (TL group and on 140 women using condom as the main contraceptive method (Non-TL group. They aged between 20 and 40 years and were selected from a health care center in Rudsar, Guilan Province, Iran, during 2013-2014. The two groups were comparable in demographic characteristics, obstetrical features and menstrual bleeding pattern using a routine questionnaire. A validated pictorial blood loss assessment chart (PBLAC was also used to measure the menstrual blood loss. Results: Women with TL had more menstrual irregularity than those without TL (24.3 vs. 10%, P=0.002. Women with TL had more polymenorrhea (9.3 vs. 1.4%, P=0.006, hypermenorrhea (12.1 vs. 2.1%, P=0.002, menorrhagia (62.9 vs. 22.1%, P<0.0001 and menometrorrhagia (15.7 vs. 3.6%, P=0.001 than those without TL. There is a significant difference in the PBLAC score between women with and without TL (P<0.0001. According to logistic regression, age odds ratio [(OR=1.08, confidence interval (CI:1.07-1.17, P=0.03], TL (OR=5.95, CI:3.45-10.26, P<0.0001 and cesarean section (OR=2.72, CI:1.49-4.97, P=0.001 were significantly associated with menorrhagia. Conclusion: We found significant differences in menstrual disorders between women with and without TL. Therefore, women should be informed by the health providers regarding the advantages and disadvantages of TL before the procedures.

  7. Treatment Steps, Surgery, and Hospitalization Rates During the First Year of Follow-up in Patients with Inflammatory Bowel Diseases from the 2011 ECCO-Epicom Inception Cohort

    DEFF Research Database (Denmark)

    Vegh, Z; Burisch, J; Pedersen, N.

    2015-01-01

    BACKGROUND AND AIMS: The ECCO-EpiCom study investigates the differences in the incidence and therapeutic management of inflammatory bowel diseases [IBD] between Eastern and Western Europe. The aim of this study was to analyse the differences in the disease phenotype, medical therapy, surgery, and...

  8. Adaptation During a Great Economic Recession: A Cohort Study of Greek and Immigrant Youth.

    Science.gov (United States)

    Motti-Stefanidi, Frosso; Asendorpf, Jens B

    2017-07-01

    This study examined how Greek and immigrant youth adapted to school life during the economic recession in Greece. Two cohorts of adolescents (M age  = 12.6 years) were compared, one assessed before the crisis and the other during the crisis (N = 1,057 and 1,052, respectively). Cohort findings were disaggregated by immigrant status, generation, and ethnic group. Crisis-cohort youth experienced more economic problems, displayed worse conduct, higher levels of absenteeism, and lower self-efficacy than precrisis youth. The cohorts did not differ in well-being, school engagement, and academic achievement. Most crisis-cohort groups showed a pervasive increase in conduct problems compared to the precrisis cohort. However, some of these groups also showed an increase in academic achievement. © 2017 The Authors. Child Development © 2017 Society for Research in Child Development, Inc.

  9. Sensor, a population-based cohort study on gastroenteritis in the Netherlands: incidence and etiology.

    NARCIS (Netherlands)

    Wit, M.A.S. de; Koopmans, M.P.G.; Kortbeek, L.M.; Wannet, W.J.B.; Vinje, J; Leusden, F. van; Bartelds, A.I.M.; Duynhoven, Y.T.H.P. van

    2001-01-01

    A prospective population-based cohort study with a nested case- control study was conducted to estimate the incidence of gastroenteritis and the associated pathogens in the general Dutch population. Follow-up of two consecutive cohorts was performed by weekly reporting cards from december 1998 to

  10. Toenail selenium status and the risk of Barrett's esophagus: The Netherlands Cohort Study

    NARCIS (Netherlands)

    Steevens, J.; Schouten, L.J.; Driessen, A.L.C.; Huysentruyt, C.J.R.; Keulemans, Y.C.A.; Goldbohm, R.A.; Brandt, P.A. van den

    2010-01-01

    Objective: To investigate the association between selenium and the risk of Barrett's esophagus (BE), the precursor lesion of esophageal adenocarcinoma. Methods: Data from the prospective Netherlands Cohort Study were used. This cohort study was initiated in 1986, when 120,852 subjects aged 55-69

  11. Anthropometry, physical activity, and endometrial cancer risk: Results from the Netherlands Cohort Study

    NARCIS (Netherlands)

    Schouten, L.J.; Goldbohm, R.A.; Brandt, P.A. van den

    2004-01-01

    Although obesity is an established risk factor for endometrial cancer, evidence linking risk to height, weight change since age 20, and physical activity is limited. In this case-cohort study, 62 573 women from The Netherlands Cohort Study on Diet and Cancer were followed up from 1986 to 1995, and

  12. Cohort profile: LIFEWORK, a prospective cohort study on occupational and environmental risk factors and health in the Netherlands.

    Science.gov (United States)

    Reedijk, Marije; Lenters, Virissa; Slottje, Pauline; Pijpe, Anouk; Peeters, Petra H; Korevaar, Joke C; Bueno-de-Mesquita, Bas; Verschuren, W M Monique; Verheij, Robert A; Pieterson, Inka; van Leeuwen, Flora E; Rookus, Matti A; Kromhout, Hans; Vermeulen, Roel C H

    2018-02-03

    LIFEWORK is a large federated prospective cohort established in the Netherlands to quantify the health effects of occupational and environmental exposures. This cohort is also the Dutch contribution to the international Cohort Study of Mobile Phone Use and Health (COSMOS). In this paper, we describe the study design, ongoing data collection, baseline characteristics of participants and the repeatability of key questionnaire items. 88 466 participants were enrolled in three cohort studies in 2011-2012. Exposure information was collected by a harmonised core questionnaire, or modelled based on occupational and residential histories; domains include air pollution (eg, nitrogen dioxide (NO 2 ), particulate matter with diameter ≤2.5 µm (PM 2.5 )), noise, electromagnetic fields (EMF), mobile phone use, shift work and occupational chemical exposures. Chronic and subacute health outcomes are assessed by self-report and through linkage with health registries. Participants had a median age of 51 years at baseline (range 19-87), and the majority are female (90%), with nurses being over-represented. Median exposure levels of NO 2 , PM 2.5 , EMF from base stations and noise at the participants' home addresses at baseline were 22.9 µg/m 3 , 16.6 µg/m 3 , 0.003 mWm 2 and 53.1 dB, respectively. Twenty-two per cent of participants reported to have started using a mobile phone more than 10 years prior to baseline. Repeatability for self-reported exposures was moderate to high (weighted kappa range: 0.69-1) for a subset of participants (n=237) who completed the questionnaire twice. We are actively and passively observing participants; we plan to administer a follow-up questionnaire every 4-5 years-the first follow-up will be completed in 2018-and linkage to cause-of-death and cancer registries occurs on a (bi)annual basis. This prospective cohort offers a unique, large and rich resource for research on contemporary occupational and environmental health risks and will

  13. Psychosocial work environment and antidepressant medication: a prospective cohort study

    Directory of Open Access Journals (Sweden)

    Westergaard-Nielsen Niels

    2009-07-01

    Full Text Available Abstract Background Adverse psychosocial work environments may lead to impaired mental health, but it is still a matter of conjecture if demonstrated associations are causal or biased. We aimed at verifying whether poor psychosocial working climate is related to increase of redeemed subscription of antidepressant medication. Methods Information on all antidepressant drugs (AD purchased at pharmacies from 1995 through 2006 was obtained for a cohort of 21,129 Danish public service workers that participated in work climate surveys carried out during the period 2002–2005. Individual self-reports of psychosocial factors at work including satisfaction with the work climate and dimensions of the job strain model were obtained by self-administered questionnaires (response rate 77,2%. Each employee was assigned the average score value for all employees at his/her managerial work unit [1094 units with an average of 18 employees (range 3–120]. The risk of first-time AD prescription during follow-up was examined according to level of satisfaction and psychosocial strain by Cox regression with adjustment for gender, age, marital status, occupational status and calendar year of the survey. Results The proportion of employees that received at least one prescription of ADs from 1995 through 2006 was 11.9% and prescriptions rose steadily from 1.50% in 1996 to the highest level 6.47% in 2006. ADs were prescribed more frequent among women, middle aged, employees with low occupational status and those living alone. None of the measured psychosocial work environment factors were consistently related to prescription of antidepressant drugs during the follow-up period. Conclusion The study does not indicate that a poor psychosocial work environment among public service employees is related to prescription of antidepressant pharmaceuticals. These findings need cautious interpretation because of lacking individual exposure assessments.

  14. Organisational justice and health of employees: prospective cohort study.

    Science.gov (United States)

    Kivimäki, M; Elovainio, M; Vahtera, J; Ferrie, J E

    2003-01-01

    To examine the association between components of organisational justice (that is, justice of decision making procedures and interpersonal treatment) and health of employees. The Poisson regression analyses of recorded all-cause sickness absences with medical certificate and the logistic regression analyses of minor psychiatric morbidity, as assessed by the General Health Questionnaire, and poor self rated health status were based on a cohort of 416 male and 3357 female employees working during 1998-2000 in 10 hospitals in Finland. Low versus high justice of decision making procedures was associated with a 41% higher risk of sickness absence in men (rate ratio (RR) 1.4, 95% confidence interval (CI) 1.1 to 1.8), and a 12% higher risk in women (RR 1.1, 95% CI 1.0 to 1.2) after adjustment for baseline characteristics. The corresponding odds ratios (OR) for minor psychiatric morbidity were 1.6 (95% CI 1.0 to 2.6) in men and 1.4 (95% CI 1.2 to 1.7) in women, and for self rated health 1.4 in both sexes. In interpersonal treatment, low justice increased the risk of sickness absence (RR 1.3 (95% CI 1.0 to 1.6) and RR 1.2 (95% CI 1.2 to 1.3) in men and women respectively), and minor psychiatric morbidity (OR 1.2 in both sexes). These figures largely persisted after control for other risk factors (for example, job control, workload, social support, and hostility) and they were replicated in initially healthy subcohorts. No evidence was found to support the hypothesis that organisational justice would represent a consequence of health (reversed causality). This is the first longitudinal study to show that the extent to which people are treated with justice in workplaces independently predicts their health.

  15. Exercise in Thoroughbred yearlings during sales preparation: a cohort study.

    Science.gov (United States)

    Bolwell, C F; Rogers, C W; French, N P; Firth, E C

    2012-01-01

    There is increasing evidence suggesting that early exercise in Thoroughbred racehorses may be beneficial to the development of the musculoskeletal system. At present, information on the exercise programmes and health problems of individual yearlings during a sales preparation is scant. To describe the exercise and health problems of Thoroughbred yearlings during preparation for sales, and to identify variations in exercise between and within farms. A prospective cohort study was used to collect exercise and health information from 18 farms across New Zealand. Daily exercise records for individual horses were recorded during the studfarms' preparation for the annual national yearling sales in January 2009. Data were collected from 319 yearlings, of which 283 (88.7%) were exercised (hand walking, mechanical walker and lungeing) during their preparations. Sales preparation lasted a median of 69 days (interquartile range 61-78) and differed significantly between farms (Psale (P = 0.14) or category of sales price (P = 0.12). Within certain farms, daily exercise differed between horses as did total exercise by gender and the number of days spent in the sales preparation. Lameness was the most common condition affecting yearlings and the overall incidence rate of lameness was 0.08 per 100 horse days (95% confidence interval 0.05-0.13). Incidence rates of lameness varied significantly between farms (P = 0.02), but not by age (P = 0.77), sales type (P = 0.58) or month of the preparation (P = 0.53). Yearling exercise programmes varied between and within farms. Since exercise is already being tailored for each individual horse, there may be an opportunity to allow for modifications to sales preparation with the future career in mind. © 2011 EVJ Ltd.

  16. Prevalence of cough throughout childhood: A cohort study.

    Directory of Open Access Journals (Sweden)

    Maja Jurca

    Full Text Available Cough in children is a common reason for medical consultations and affects quality of life. There are little population-based data on the epidemiology of recurrent cough in children and how this varies by age and sex, or between children with and without wheeze. We determined the prevalence of cough throughout childhood, comparing several standardised cough questions. We did this for the entire population and separately for girls and boys, and for children with and without wheeze.In a population-based prospective cohort from Leicestershire, UK, we assessed prevalence of cough with repeated questionnaires from early childhood to adolescence. We asked whether the child usually coughed more than other children, with or without colds, had night-time cough or cough triggered by various factors (triggers, related to increased breathing effort, allergic or food triggers. We calculated prevalence from age 1 to 18 years using generalised estimating equations for all children, and for children with and without wheeze.Of 7670 children, 10% (95% CI 10-11% coughed more than other children, 69% (69-70% coughed usually with a cold, 34% to 55% age-dependently coughed without colds, and 25% (25-26% had night-time cough. Prevalence of coughing more than peers, with colds, at night, and triggered by laughter varied little throughout childhood, while cough without colds and cough triggered by exercise, house dust or pollen became more frequent with age. Cough was more common in boys than in girls in the first decade of life, differences got smaller in early teens and reversed after the age of 14 years. All symptoms were more frequent in children with wheeze.Prevalence of cough in children varies with age, sex and with the questions used to assess it, suggesting that comparisons between studies are only valid for similar questions and age groups.

  17. Comorbid Depression and Heart Failure: A Community Cohort Study.

    Directory of Open Access Journals (Sweden)

    Bhautesh Dinesh Jani

    Full Text Available To examine the association between depression and clinical outcomes in heart failure (HF in a community cohort.HF patients in Minnesota, United States completed depression screening using the 9-item Patient Health Questionnaire (PHQ-9 between 1st Oct 2007 and 1st Dec 2011; patients with PHQ-9≥5 were labelled "depressed". We calculated the risk of death and first hospitalization within 2 years using Cox regression. Results were adjusted for 10 commonly used prognostic factors (age, sex, systolic blood pressure, estimated glomerular filtration rate, serum sodium, ejection fraction, blood urea nitrogen, brain natriuretic peptide, presence of diabetes and ischaemic aetiology. Area under the curve (AUC, integrated discrimination improvement (IDI and net reclassification improvement (NRI compared depression as a predictor against the aforementioned factors.425 patients (mean age 74, 57.6% males were included in the study; 179 (42.1% had PHQ-9≥5. The adjusted hazard ratio of death was 2.02 (95% CI 1.34-3.04 and of hospitalization was 1.42 (95% CI 1.13-1.80 for those with compared to those without depression. Adding depression to the models did not appreciably change the AUC but led to statistically significant improvements in both the IDI (p = 0.001 and p = 0.005 for death and hospitalization, respectively and NRI (for death and hospitalization, 35% (p = 0.002 and 27% (p = 0.007 were reclassified correctly, respectively.Depression is frequent among community patients with HF and associated with increased risk of hospitalizations and death. Risk prediction for death and hospitalizations in HF patients can be improved by considering depression.

  18. Gender preference and perinatal depression in Turkey: A cohort study.

    Science.gov (United States)

    Senturk Cankorur, Vesile; Duman, Berker; Taylor, Clare; Stewart, Robert

    2017-01-01

    Child gender preference is important in some cultures and has been found to modify risk for antenatal and postnatal depression. We investigated discrepancies in the child gender preference between participating women and other key family members and the extent to which these predicted perinatal depression. In a large cohort study of perinatal depression in urban and rural Turkey, participants had been asked about child gender preferences: their own, and those of their husband, parents, and parents in-law. Of 730 participants recruited in their third trimester (94.6% participation), 578 (79.2%) were reassessed at a mean (SD) 4.1 (3.3) months after childbirth, and 488 (66.8%) were reassessed at 13.7 (2.9) months. No associations were found between any gender preference reported in the antenatal period and depression at any examination. On the other hand, we found associations of antenatal depression with differences in participant-reported gender preference and that reported for their mother-in-law (OR 1.81, 1.08-3.04). This non-agreement also predicted depression at the 4 month (OR 2.24, 1.24-4.03) and 14 month (OR 2.07, 1.05-4.04) post-natal examinations. These associations with postnatal depression persisted after adjustment for a range of covariates (ORs 3.19 (1.54-6.59) and 3.30 (1.49-7.33) respectively). Reported disagreement in child gender preferences between a woman and her mother-in-law was a predictor of post-natal depression and may reflect wider family disharmony as an underlying factor.

  19. Gender preference and perinatal depression in Turkey: A cohort study.

    Directory of Open Access Journals (Sweden)

    Vesile Senturk Cankorur

    Full Text Available Child gender preference is important in some cultures and has been found to modify risk for antenatal and postnatal depression. We investigated discrepancies in the child gender preference between participating women and other key family members and the extent to which these predicted perinatal depression.In a large cohort study of perinatal depression in urban and rural Turkey, participants had been asked about child gender preferences: their own, and those of their husband, parents, and parents in-law. Of 730 participants recruited in their third trimester (94.6% participation, 578 (79.2% were reassessed at a mean (SD 4.1 (3.3 months after childbirth, and 488 (66.8% were reassessed at 13.7 (2.9 months.No associations were found between any gender preference reported in the antenatal period and depression at any examination. On the other hand, we found associations of antenatal depression with differences in participant-reported gender preference and that reported for their mother-in-law (OR 1.81, 1.08-3.04. This non-agreement also predicted depression at the 4 month (OR 2.24, 1.24-4.03 and 14 month (OR 2.07, 1.05-4.04 post-natal examinations. These associations with postnatal depression persisted after adjustment for a range of covariates (ORs 3.19 (1.54-6.59 and 3.30 (1.49-7.33 respectively.Reported disagreement in child gender preferences between a woman and her mother-in-law was a predictor of post-natal depression and may reflect wider family disharmony as an underlying factor.

  20. Predictors of fibromyalgia: a population-based twin cohort study.

    Science.gov (United States)

    Markkula, Ritva A; Kalso, Eija A; Kaprio, Jaakko A

    2016-01-15

    Fibromyalgia (FM) is a pain syndrome, the mechanisms and predictors of which are still unclear. We have earlier validated a set of FM-symptom questions for detecting possible FM in an epidemiological survey and thereby identified a cluster with "possible FM". This study explores prospectively predictors for membership of that FM-symptom cluster. A population-based sample of 8343 subjects of the older Finnish Twin Cohort replied to health questionnaires in 1975, 1981, and 1990. Their answers to the set of FM-symptom questions in 1990 classified them in three latent classes (LC): LC1 with no or few symptoms, LC2 with some symptoms, and LC3 with many FM symptoms. We analysed putative predictors for these symptom classes using baseline (1975 and 1981) data on regional pain, headache, migraine, sleeping, body mass index (BMI), physical activity, smoking, and zygosity, adjusted for age, gender, and education. Those with a high likelihood of having fibromyalgia at baseline were excluded from the analysis. In the final multivariate regression model, regional pain, sleeping problems, and overweight were all predictors for membership in the class with many FM symptoms. The strongest non-genetic predictor was frequent headache (OR 8.6, CI 95% 3.8-19.2), followed by persistent back pain (OR 4.7, CI 95% 3.3-6.7) and persistent neck pain (OR 3.3, CI 95% 1.8-6.0). Regional pain, frequent headache, and persistent back or neck pain, sleeping problems, and overweight are predictors for having a cluster of symptoms consistent with fibromyalgia.

  1. New architectural design of delivery room reduces morbidity in preterm neonates: a prospective cohort study.

    Science.gov (United States)

    Terrin, Gianluca; Conte, Francesca; Scipione, Antonella; Aleandri, Vincenzo; Di Chiara, Maria; Bacchio, Erica; Messina, Francesco; De Curtis, Mario

    2016-03-23

    A multidisciplinary committee composed of a panel of experts, including a member of the American Academy of Pediatrics and American Institute of Architects, has suggested that the delivery room (DR) and the neonatal intensive care units (NICU) room should be directly interconnected. We aimed to investigate the impact of the architectural design of the DR and the NICU on neonatal outcome. Two cohorts of preterm neonates born at architectural renovation of the DR realized in accordance with specific standards (Cohort 2: "new concept of DR"). In Cohort 1, neonates were initially cared for a conventional resuscitation area, situated in the DR, and then transferred to the NICU, located on a separate floor of the same hospital. In Cohort 2 neonates were assisted at birth directly in the NICU room, which was directly connected to the DR via a pass-through door. The primary outcome of the study was morbidity, defined by the proportion of neonates with at least one complication of prematurity (i.e., late-onset sepsis, patent ductus arteriosus, intraventricular hemorrhage, periventricular leukomalacia, bronchopulmonary dysplasia, retinopathy of prematurity and necrotizing enterocolitis). Secondary outcomes were mortality and duration of hospitalization. Statistical analysis was performed using standard methods by SPSS software. We enrolled 106 neonates (56 in Cohort 1 and 50 in Cohort 2). The main clinical and demographic characteristics of the 2 cohorts were similar. Moderate hypothermia (body temperature ≤ 35.9 °C) was more frequent in Cohort 1 (57%) compared with Cohort 2 (24%, p = 0.001). Morbidity was increased in Cohort 1 (73%) compared with Cohort 2 (44%, p = 0.002). No statistically significant differences in mortality and median duration of hospitalization were observed between the 2 cohorts of the study. If realized according to the proposed architectural standards, renovation of DR and NICU may represent an opportunity to reduce morbidity in preterm neonates.

  2. Small bowel angiodysplasia and novel disease associations: a cohort study.

    LENUS (Irish Health Repository)

    Holleran, Grainne

    2013-04-01

    Gastrointestinal angiodysplasias recurrently bleed, accounting for 3-5% of obscure gastrointestinal bleeding. The advent of small bowel capsule endoscopy (SBCE) has led to an increased recognition of small bowel angiodysplasias (SBAs) but little is known about their etiology. Previous small cohorts and case reports suggest an equal gender incidence and associations with cardiovascular disease, renal impairment, and coagulopathies.

  3. Overview of ongoing cohort and dietary studies in the Arctic

    DEFF Research Database (Denmark)

    Weihe, Pál; Bjerregaard, Peter; Bonefeld-Jørgensen, Eva

    2016-01-01

    in an article in this journal, whereas another paper describes the effects associated with contaminant exposure in the Arctic. The cohort descriptions have been arranged geographically, beginning in Norway and moving east to Finland, Sweden, Russia and the other Arctic countries and ultimately to the Faroe...

  4. Epilepsy in adults with mitochondrial disease: A cohort study.

    Science.gov (United States)

    Whittaker, Roger G; Devine, Helen E; Gorman, Grainne S; Schaefer, Andrew M; Horvath, Rita; Ng, Yi; Nesbitt, Victoria; Lax, Nichola Z; McFarland, Robert; Cunningham, Mark O; Taylor, Robert W; Turnbull, Douglass M

    2015-12-01

    The aim of this work was to determine the prevalence and progression of epilepsy in adult patients with mitochondrial disease. We prospectively recruited a cohort of 182 consecutive adult patients attending a specialized mitochondrial disease clinic in Newcastle upon Tyne between January 1, 2005 and January 1, 2008. We then followed this cohort over a 7-year period, recording primary outcome measures of occurrence of first seizure, status epilepticus, stroke-like episode, and death. Overall prevalence of epilepsy in the cohort was 23.1%. Mean age of epilepsy onset was 29.4 years. Prevalence varied widely between genotypes, with several genotypes having no cases of epilepsy, a prevalence of 34.9% in the most common genotype (m.3243A>G mutation), and 92.3% in the m.8344A>G mutation. Among the cohort as a whole, focal seizures, with or without progression to bilateral convulsive seizures, was the most common seizure type. Conversely, all of the patients with the m.8344A>G mutation and epilepsy experienced myoclonic seizures. Patients with the m.3243A>G mutation remain at high risk of developing stroke-like episodes (1.16% per year). However, although the standardized mortality ratio for the entire cohort was high (2.86), this ratio did not differ significantly between patients with epilepsy (2.96) and those without (2.83). Epilepsy is a common manifestation of mitochondrial disease. It develops early in the disease and, in the case of the m.3243A>G mutation, often presents in the context of a stroke-like episode or status epilepticus. However, epilepsy does not itself appear to contribute to the increased mortality in mitochondrial disease. © 2015 The Authors. Annals of Neurology published by Wiley Periodicals, Inc. on behalf of American Neurological Association.

  5. Follow-up methods for retrospective cohort studies in New Zealand.

    Science.gov (United States)

    Fawcett, Jackie; Garrett, Nick; Bates, Michael N

    2002-01-01

    To define a general methodology for maximising the success of follow-up processes for retrospective cohort studies in New Zealand, and to illustrate an approach to developing country-specific follow-up methodologies. We recently conducted a cohort study of mortality and cancer incidence in New Zealand professional fire fighters. A number of methods were used to trace vital status, including matching with records of the New Zealand Health Information Service (NZHIS), pension records of Work and Income New Zealand (WINZ), and electronic electoral rolls. Non-electronic methods included use of paper electoral rolls and the records of the Registrar of Births Deaths and Marriages. 95% of the theoretical person-years of follow-up of the cohort were traced using these methods. In terms of numbers of cohort members traced to end of follow-up, the most useful tracing methods were fire fighter employment records, the NZHIS, WINZ, and the electronic electoral rolls. The follow-up process used for the cohort study was highly successful. On the basis of this experience, we propose a generic, but flexible, model for follow-up of retrospective cohort studies in New Zealand. Similar models could be constructed for other countries. Successful follow-up of cohort studies is possible in New Zealand using established methods. This should encourage the use of cohort studies for the investigation of epidemiological issues. Similar models for follow-up processes could be constructed for other countries.

  6. pilot studies to test the feasibility of a birth cohort study investigating ...

    African Journals Online (AJOL)

    1991-04-20

    Apr 20, 1991 ... of a birth cohort study investigating the effects of urbanisation in South Africa. S. FONN, M. DE ... is to determine the biological, environmental, economic and psychological factors that are associated with ... the South African Medical Research Council, Parowvallei,. CP. S. FONN, M.B. B.CH., D.O.H., D.EPL, ...

  7. Natural disease course of Crohn's disease during the first 5 years after diagnosis in a European population-based inception cohort: an Epi-IBD study.

    Science.gov (United States)

    Burisch, Johan; Kiudelis, Gediminas; Kupcinskas, Limas; Kievit, Hendrika Adriana Linda; Andersen, Karina Winther; Andersen, Vibeke; Salupere, Riina; Pedersen, Natalia; Kjeldsen, Jens; D'Incà, Renata; Valpiani, Daniela; Schwartz, Doron; Odes, Selwyn; Olsen, Jóngerð; Nielsen, Kári Rubek; Vegh, Zsuzsanna; Lakatos, Peter Laszlo; Toca, Alina; Turcan, Svetlana; Katsanos, Konstantinos H; Christodoulou, Dimitrios K; Fumery, Mathurin; Gower-Rousseau, Corinne; Zammit, Stefania Chetcuti; Ellul, Pierre; Eriksson, Carl; Halfvarson, Jonas; Magro, Fernando Jose; Duricova, Dana; Bortlik, Martin; Fernandez, Alberto; Hernández, Vicent; Myers, Sally; Sebastian, Shaji; Oksanen, Pia; Collin, Pekka; Goldis, Adrian; Misra, Ravi; Arebi, Naila; Kaimakliotis, Ioannis P; Nikuina, Inna; Belousova, Elena; Brinar, Marko; Cukovic-Cavka, Silvija; Langholz, Ebbe; Munkholm, Pia

    2018-01-23

    The Epi-IBD cohort is a prospective population-based inception cohort of unselected patients with inflammatory bowel disease from 29 European centres covering a background population of almost 10 million people. The aim of this study was to assess the 5-year outcome and disease course of patients with Crohn's disease (CD). Patients were followed up prospectively from the time of diagnosis, including collection of their clinical data, demographics, disease activity, medical therapy, surgery, cancers and deaths. Associations between outcomes and multiple covariates were analysed by Cox regression analysis. In total, 488 patients were included in the study. During follow-up, 107 (22%) patients received surgery, while 176 (36%) patients were hospitalised because of CD. A total of 49 (14%) patients diagnosed with non-stricturing, non-penetrating disease progressed to either stricturing and/or penetrating disease. These rates did not differ between patients from Western and Eastern Europe. However, significant geographic differences were noted regarding treatment: more patients in Western Europe received biological therapy (33%) and immunomodulators (66%) than did those in Eastern Europe (14% and 54%, respectively, P<0.01), while more Eastern European patients received 5-aminosalicylates (90% vs 56%, P<0.05). Treatment with immunomodulators reduced the risk of surgery (HR: 0.4, 95% CI 0.2 to 0.6) and hospitalisation (HR: 0.3, 95% CI 0.2 to 0.5). Despite patients being treated early and frequently with immunomodulators and biological therapy in Western Europe, 5-year outcomes including surgery and phenotype progression in this cohort were comparable across Western and Eastern Europe. Differences in treatment strategies between Western and Eastern European centres did not affect the disease course. Treatment with immunomodulators reduced the risk of surgery and hospitalisation. © Article author(s) (or their employer(s) unless otherwise stated in the text of the

  8. Clinical study of salvage surgery after concurrent chemoradiotherapy

    International Nuclear Information System (INIS)

    Shimane, Toshikazu; Nakamura, Taisuke; Shimotatara, Yuko

    2013-01-01

    As the use of concurrent chemoradiotherapy (CCRT) is becoming more widespread, with numerous facilities performing it to maintain function and form, the number of cases requiring salvage surgery is also increasing. We investigated the postoperative prognosis of patients who experienced complications during salvage surgery after CCRT. Subjects were 27 patients who underwent salvage surgery following CCRT at our department during the 7-year period between January 2005 and December 2011. We selected all cases of salvage surgery, comprising neck dissections, total laryngectomies, partial laryngectomies, esophageal resections, and reconstructive surgeries, for analysis. The results were favorable, with a complication rate during salvage surgery after CCRT of 14.8% and a survival rate of 77.8%. Although it is difficult to compare these complications and outcome findings with available reports on salvage surgery without CCRT, it is believed complications can arise in approximately half of the cases. Thus, surgeons should be cognizant of the potential for serious complications, which are sometimes unexpected. Different from our findings, the prognosis following salvage surgery is generally not thought to be favorable and therefore care should be taken to detect recurrence and provide treatment early in salvage surgery cases. (author)

  9. Core Outcomes for Colorectal Cancer Surgery: A Consensus Study.

    Directory of Open Access Journals (Sweden)

    Angus G K McNair

    2016-08-01

    Full Text Available Colorectal cancer (CRC is a major cause of worldwide morbidity and mortality. Surgical treatment is common, and there is a great need to improve the delivery of such care. The gold standard for evaluating surgery is within well-designed randomized controlled trials (RCTs; however, the impact of RCTs is diminished by a lack of coordinated outcome measurement and reporting. A solution to these issues is to develop an agreed standard "core" set of outcomes to be measured in all trials to facilitate cross-study comparisons, meta-analysis, and minimize outcome reporting bias. This study defines a core outcome set for CRC surgery.The scope of this COS includes clinical effectiveness trials of surgical interventions for colorectal cancer. Excluded were nonsurgical oncological interventions. Potential outcomes of importance to patients and professionals were identified through systematic literature reviews and patient interviews. All outcomes were transcribed verbatim and categorized into domains by two independent researchers. This informed a questionnaire survey that asked stakeholders (patients and professionals from United Kingdom CRC centers to rate the importance of each domain. Respondents were resurveyed following group feedback (Delphi methods. Outcomes rated as less important were discarded after each survey round according to predefined criteria, and remaining outcomes were considered at three consensus meetings; two involving international professionals and a separate one with patients. A modified nominal group technique was used to gain the final consensus. Data sources identified 1,216 outcomes of CRC surgery that informed a 91 domain questionnaire. First round questionnaires were returned from 63 out of 81 (78% centers, including 90 professionals, and 97 out of 267 (35% patients. Second round response rates were high for all stakeholders (>80%. Analysis of responses lead to 45 and 23 outcome domains being retained after the first and

  10. Feasibility of a cohort study on health risks caused by occupational exposure to radiofrequency electromagnetic fields

    Science.gov (United States)

    2009-01-01

    Background The aim of this study was to examine the feasibility of performing a cohort study on health risks from occupational exposure to radiofrequency electromagnetic fields (RF-EMF) in Germany. Methods A set of criteria was developed to evaluate the feasibility of such a cohort study. The criteria aimed at conditions of exposure and exposure assessment (level, duration, preferably on an individual basis), the possibility to assemble a cohort and the feasibility of ascertaining various disease endpoints. Results Twenty occupational settings with workers potentially exposed to RF-EMF and, in addition, a cohort of amateur radio operators were considered. Based on expert ratings, literature reviews and our set of predefined criteria, three of the cohorts were identified as promising for further evaluation: the personnel (technicians) of medium/short wave broadcasting stations, amateur radio operators, and workers on dielectric heat sealers. After further analyses, the cohort of workers on dielectric heat sealers seems not to be feasible due to the small number of exposed workers available and to the difficulty of assessing exposure (exposure depends heavily on the respective working process and mixture of exposures, e.g. plastic vapours), although exposure was highest in this occupational setting. The advantage of the cohort of amateur radio operators was the large number of persons it includes, while the advantage of the cohort of personnel working at broadcasting stations was the quality of retrospective exposure assessment. However, in the cohort of amateur radio operators the exposure assessment was limited, and the cohort of technicians was hampered by the small number of persons working in this profession. Conclusion The majority of occupational groups exposed to RF-EMF are not practicable for setting up an occupational cohort study due to the small numbers of exposed subjects or due to exposure levels being only marginally higher than those of the general

  11. Feasibility of a cohort study on health risks caused by occupational exposure to radiofrequency electromagnetic fields

    Directory of Open Access Journa