Viability of a jejunal segment after neovascularization by omentoenteropexy Viabilidade de segmento jejunal neovascularizado por omentoenteropexia

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Mércia Maria Braga Rocha

2002-01-01

Full Text Available Omentoenteropexy was developed as an alternative technique to promote neovascularization in an isolated bowel segment. OBJECTIVE: The aim of the present protocol was to study the long-term viability of an isolated jejunal segment following neovascularization by omentoenteropexy. Long-term survival of a neovascularized bowel segment is an indication that the utilization of this segment as an intestinal graft can be successful. METHODS: To test the proposed surgical technique, 13 Wistar rats were subjected to laparotomy, the jejunum was exposed at 20 cm from the angle of Treitz and a pedicle of greater omentum was isolated. An incision of 6 cm was made along the antimesenteric jejunal border, exposing the submucosa. Omentoenteropexy was performed between the incision of the jejunum and the pedicle of the greater omentum. After seven weeks, the mesentery of the jejunal segment subjected to omentoenteropexy was ligated and isolated from the rest of the jejunum by a complete proximal and distal transversal section. Subsequently, an end-to-end anastomosis was performed to restore the continuity of the bowel. RESULTS: At 10 weeks from the first surgical intervention, the isolated jejunal segment subjected to omentoenteropexy was completely neovascularized and viable. CONCLUSION: No evidence of anatomical or functional intestinal obstruction was observed.A omentoenteropexia foi desenvolvida como uma alternativa para técnica de neovascularização em segmentos intestinais isolados, evidenciando algumas vantagens em relação a utilização de órgãos previamente descritos. OBJETIVO: Avaliar a viabilidade de um segmento jejunal neovascularizado por omentoenteropexia. MÉTODOS: Treze ratos Wistar foram submetidos a laparotomia, com exposição do jejuno vinte centímetros após o ligamento de Treitz e obtenção de um pedículo de omento. Na borda antimesentérica do jejuno foi feita uma incisão de seis centímetros com exposição da submucosa intacta

Is antibiotic prophylaxis in nasal packing for anterior epistaxis needed?

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Francisco Pérez

2016-03-01

Full Text Available La epistaxis es un problema extremadamente común que en ocasiones requiere de taponamiento anterior. Usualmente se indican antibióticos de forma concomitante para la prevención de complicaciones infecciosas, aunque el rol de esta medida es controvertido. Utilizando la base de datos Epistemonikos, la cual es mantenida mediante búsquedas en 30 bases de datos, identificamos una revisión sistemática que incluye tres estudios primarios, ninguno de ellos controlado y aleatorizado. Realizamos un metanálisis y tablas de resumen de los resultados utilizando el método GRADE. Concluimos que no está claro si los antibióticos profilácticos disminuyen las complicaciones infecciosas en pacientes con taponamiento nasal por epistaxis anterior porque la certeza de la evidencia es muy baja.

Simulación y análisis de un segmento de proceso. Parte 1: planteamiento del problema

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Daniel Bogoya Maldonado

1992-09-01

Full Text Available Aquí se presenta el primero de una serie de trabajos encaminados a ilustrar las características y potencialidades de la simulación matemática de un segmento de proceso químico en estado estable, aplicada en microcomputadores digitales, con miras al análisis y diseño de procesos. La serie consiste en: formular un problema de estructura básica, para resolverlo a la luz de las técnicas modular secuencial y modular simultánea; analizar los efectos de aceleración de convergencia y de inicialización de los procesos de cálculo numérico iterativo; y analizar el comportamiento de las variables de operación del segmento.

Aplicações clínicas do princípio de Scheimpflug na Oftalmologia

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Fernando Faria-Correia

2016-04-01

Full Text Available RESUMO Este artigo apresenta uma revisão dos princípios e das aplicações clínicas do princípio de Scheimpflug na área da imagiologia do segmento anterior. Ao disponibilizar uma imagem tridimensional do segmento anterior, esta tecnologia permite a caraterização da elevação e curvatura das superfícies anterior e posterior da córnea, o mapeamento paquimétrico, o cálculo do poder refrativo total da córnea e a biometria do segmento anterior. Na subespecialidade de cirurgia refrativa, esta abordagem melhora a capacidade de identificação de casos com risco de desenvolver ectasia, bem como de planeamento e de avaliação dos resultados dos procedimentos cirúrgicos. Recentemente, esta tecnologia foi introduzida na avaliação biomecânica in vivo da córnea e na cirurgia de catarata assistida por laser de femtossegundo.

Experiencia inicial con el retiro de electrodos de estimulación cardiaca mediante una técnica de extracción percutánea mecánica

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Mauricio Duque; Juan C. Díaz; Jorge E. Marín; Julián M. Aristizábal; Jorge E. Velásquez; Laura Duque; William Uribe

2015-01-01

Introducción: En Colombia el uso de técnicas de extracción de electrodos de estimulación cardiaca es infrecuente, en parte debido al alto costo de los materiales utilizados para la extracción percutánea y por otra parte por los riesgos percibidos asociados al procedimiento. Esto ha llevado a que muchos electrodos disfuncionantes o infectados sean abandonados o retirados mediante cirugía abierta. Con base en lo anterior se ha desarrollado un programa de extracción de electrodos mediante el uso...

Organogênese do caquizeiro a partir de segmentos radiculares

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Carvalho Dayse Cristina de

2004-01-01

Full Text Available A produção de mudas de caquizeiro (Diospyros kaki pelo processo da enxertia sobre porta-enxertos provenientes de sementes, ocasiona problemas de desuniformidade vegetativa. O objetivo do trabalho foi contribuir para o desenvolvimento de um protocolo para a regeneração de brotações de caquizeiro do tipo café, a partir de raízes por organogênese indireta. Segmentos radiculares obtidos de embriões germinados in vitro foram isolados de sementes de frutos maduros em meio MSfraction one-halfNO3. As sementes receberam assepsia pela imersão em etanol 70% por um minuto, em solução de hipoclorito de sódio 2,5% por 20 minutos e quatro lavagens em água esterilizada. No primeiro experimento, os segmentos radiculares de 2cm foram isolados em meio de cultura MSfraction one-halfNO3 acrescido de 0,01mM de ácido indolacético e quatro tipos de citocininas nas concentrações 1 e 10mM: zeatina, 6-benzilaminopurina, 2-isopenteniladenina e thidiazuron. No segundo experimento, para o enraizamento das brotações, foram testados quatro períodos de permanência em meio com 10mM de ácido indolbutírico: 0, 5 10 e 15 dias. A maior regeneração de brotos (1,2 brotos por explante ocorreu na combinação 1mM de zeatina com 0,01mM de ácido indolacético. As brotações juvenis obtidas possuem potencial natural para o enraizamento, sendo necessário novos estudos para confirmar o efeito da aplicação de auxinas.

Atuação de consórcios de exportação brasileiros no segmento de moda praia.

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Deborah Moraes Zouain

2008-04-01

Full Text Available O artigo aborda qualitativamente a atuação de consórcios de exportação no segmento moda praia no Brasil, na perspectiva do marketing. Utilizando o método da Grounded Theory, este estudo visa identificar categorias que compõem e influenciam o desempenho exportador de três consórcios de exportação do segmento de moda praia. Este artigo se torna relevante ao elencar as categorias encontradas por meio da pesquisa de campo e apresentar as relações entre elas. Essas categorias foram caracterizadas como grandes, intermediárias e iniciais, com o propósito de identificar os seguintes aspectos: a as características presentes apenas nos consórcios estudados, b o composto promocional por meio destas e c as características presentes no segmento de moda praia dos consórcios estudados. O artigo apresenta implicações teóricas e gerenciais ao apresentar duas grandes categorias que são relevantes na atuação de consórcios de exportação no mercado externo: conhecimento de marketing no mercado externo e características do consórcio.

Empresas brasileiras do novo mercado e suas práticas de evidenciação voluntária de informações por segmento

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Ana Paula Capuano da Cruz

2014-05-01

Full Text Available A adoção das normas internacionais de contabilidade tem demandado alterações no padrão contábil de diversos países. Dentre tais mudanças, no Brasil, tem-se a incorporação de uma prática de divulgação de resultados que exige a evidenciação de informações por segmentos. O segment reporting, como também é denominado, é uma exigência introduzida pela International Financial Reporting Standard (IFRS 8 que implica um ponto de tangência muito forte entre a contabilidade gerencial e a contabilidade com foco no usuário externo. Com base nessas alterações, a partir da análise das Notas Explicativas das 106 companhias listadas no Novo Mercado da Bolsa de Valores, Mercadorias e Futuros de São Paulo (BM&FBovespa, o estudo objetivou verificar como as companhias abertas brasileiras estruturaram o formato de evidenciação de informações por segmento. Em termos metodológicos, trata-se de uma pesquisa documental, de caráter descritivo, que conjuntou o emprego da técnica de análise de conteúdo e de testes não paramétricos de Mann-Whitney e Kruskal-Wallis para verificar o grau de intensidade da divulgação de informações por segmento, conforme metodologia utilizada por Guthrie et al. (1999. Os achados sinalizaram que a divulgação voluntária de informações por segmento ainda é incipiente no cenário brasileiro. Identificou-se que as companhias auditadas por uma das Big Four apresentaram menor grau de intensidade na divulgação dos impactos futuros da aplicação das orientações normativas sobre informações por segmento. Considerando o universo das 106 companhias analisadas, destaca-se que as informações segmentadas por área geográfica e ainda, por tipo de produtos ou serviços, mostraram-se mais recorrentes; informações por clientes foram escassas. Nenhuma empresa evidenciou o fluxo de caixa por segmento, e 39 companhias não mencionaram que o CPC 22 trará impacto às futuras Demonstrações Contábeis. Assim

Customer segmentation model based on value generation for marketing strategies formulation

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Alvaro Julio Cuadros

2014-01-01

Full Text Available Cuando se está decidiendo en qué segmento invertir o cómo distribuir el presupuesto de marketing, los Gerentes corren el riesgo de terminar tomando decisiones de manera general sin considerar el verdadero impacto que tiene cada cliente o segmento de clientes en las utilidades de la organización. En este artículo, se propone un modelo de segmentación de clientes que considera en primera instancia el cálculo de tres dimensiones: el valor de cliente en su ciclo de vida, el valor actual y la lealtad; para posteriormente construir los segmentos mediante mapas auto-organizados. La efectividad del modelo se probó en un Ingenio Azucarero donde se identificaron 9 segmentos de interés para la toma de decisiones de marketing.

Pronósticos de inflación mediante técnicas bayesianas

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Juan Diego Chavarría

2015-11-01

Full Text Available La efectividad de la política monetaria bajo un esquema de metas de inflación como el propuesto por el Banco Central de Costa Rica se basa en buena medida en el correcto y oportuno pronóstico de la inflación a corto y mediano plazo con el fin de diseñar de mejor forma las acciones de política monetaria. Así, el propósito de este trabajo es desarrollar una herramienta complementaria para elaborar pronósticos de inflación mediante un enfoque bayesiano. Para lo anterior se propone la utilización de la metodología Bayesian Model Averaging y de Weighted Average Least Squares. Los modelos de proyección especificados permitirían ampliar y complementar el análisis que se realiza actualmente con el Modelo Macroeconómico de Proyección Trimestral (MMPT del Banco Central de Costa Rica. Como resultado esta investigación muestra que, para datos de periodicidad mensual y a horizontes de pronóstico de 1 a 12 meses, es posible encontrar proyecciones mediante un proceso bayesiano que poseen una mayor capacidad predictiva en relación con aquellas producidas por un modelo autorregresivo.

Territórios de distribuição da artéria coroídea anterior em hemisférios cerebrais humanos de brancos e negros

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José Furlani

1970-03-01

Full Text Available Foi estudada a distribuição da a. coroídea anterior em 10 hemisférios cerebrais humanos de brancos e negros. Todas as peças foram injetadas a fresco, com massa corada e fixadas em formol. Nelas, a a. coroídea anterior foi dissecada desde a sua origem até a sua incorporação ao plexo coróide do corno inferior do ventrículo lateral. Em seguida à dissecção, as peças foram cortadas em fatias horizontais, de aproximadamente 0,5 cm de espessura. Constatou-se que a a. coroídea anterior se origina da a. carótida interna, e que ela não apresenta diferenças étnicas e sexuais, estatisticamente significantes, no que diz respeito ao seu território de distribuição. Este compreende, segundo nossas observações, as seguintes estruturas: úncus, hipocampo, tracto óptico, plexo coróide do corno inferior do ventrículo lateral e braço posterior da cápsula interna (100%; cauda do núcleo caudado (99% ± 0,99; 3/5 intermédios da porção cranial da base do pedúnculo cerebral, corpo amigdalóide e zona incerta (98% ± 1,40; 1/5 lateral da porção cranial da base do pedúnculo cerebral (92% ± 2,71; porção anterior do corpo geniculado lateral (89% ± 3,13; segmento medial do globo pálido (88% ± 3,25; núcleo subtalâmico (39% ± 4,88; grupamento nuclear lateral do tálamo (26% ± 4,39; segmento lateral do globo pálido (17% ± 3,76; grupamento nuclear posterior do tálamo (13% ± 3,36; porção posterior do putamen (9% ± 2,86; 1/5 medial da porção cranial da base do pedúnculo cerebral (7% ± 2,55 e substância negra (3% ± 1,71.

Níveis de PCR são maiores em pacientes com síndrome coronariana aguda e supradesnivelamento do segmento ST do que em pacientes sem supradesnivelamento do segmento ST

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Syed Shahid Habib

2011-01-01

Full Text Available FUNDAMENTO: Há grande interesse no uso de proteína C-reativa de alta sensibilidade (PCR-as para avaliação de risco. Altos níveis de PCR-as no início da síndrome coronária aguda (SCA, antes da necrose tecidual, pode ser um marcador substituto para comorbidades cardiovasculares. OBJETIVO: Dessa forma, nosso objetivo foi estudar diferentes medidas de seguimento de níveis de PCR-as em pacientes com SCA e comparar as diferenças entre infarto do miocárdio sem elevação do segmento ST (NSTEMI com pacientes apresentando elevação do segmento ST (STEMI. MÉTODOS: Este é um estudo observacional. Dos 89 pacientes recrutados, 60 apresentavam infarto agudo do miocárdio (IAM. Três níveis seriados de PCR-us, a nível basal na hospitalização antes de 12 horas após inicio dos sintomas, níveis de pico 36-48 horas após hospitalização e níveis de acompanhamento após 4 a 6 semanas foram analisados e comparados entre pacientes com (IAMCSST e sem supradesnivelamento do segmento ST (IAMSSST. RESULTADOS: Pacientes com IAMCSST tinham IMC significantemente mais alta quando comparados com pacientes IAMSSST. Os níveis de creatino quinase fração MB (CK-MB e aspartato aminotransferase (AST eram significantemente mais altos em pacientes com IAMCSST quando comparados com pacientes com IAMSSST (p<0,05. Os níveis de PCR a nível basal e no acompanhamento não diferiram de forma significante entre os dois grupos (p=0,2152 e p=0,4686 respectivamente. Houve uma diferença significante nos níveis de pico de PCR entre os dois grupos. No grupo de pacientes com IAMCSST os níveis foram significantemente mais altos quando comparados aos pacientes com IAMSSST (p=0,0464. CONCLUSÃO: Pacientes com IAMCSST apresentam picos significantemente mais elevados de PCR quando comparados a pacientes IAMSSST. Esses dados sugerem que o processo inflamatório tem um papel independente na patogênese do infarto do miocárdio. Dessa forma, os níveis de PCR podem ajudar na

Modelo de gestión de la red de distribución tercerizada segmento tiendas región central, en productos de consumo masivo, mediante datos de panel y simulación de Monte Carlo.

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Pulido Quintero, Miguel Angel

2013-01-01

El proyecto de investigación parte de la dinámica del modelo de distribución tercerizada para una compañía de consumo masivo en Colombia, especializada en lácteos, que para este estudio se ha denominado “Lactosa”. Mediante datos de panel con estudio de caso, se construyen dos modelos de demanda por categoría de producto y distribuidor y mediante simulación estocástica, se identifican las variables relevantes que inciden sus estructuras de costos. El problema se modela a partir del esta...

Níveis de PCR são maiores em pacientes com síndrome coronariana aguda e supradesnivelamento do segmento ST do que em pacientes sem supradesnivelamento do segmento ST Niveles de PCR son mayores en pacientes con síndrome coronario agudo y supradesnivel del segmento ST que en pacientes sin supradesnivel del segmento ST CRP levels are higher in patients with ST elevation than non-ST elevation acute coronary syndrome

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Syed Shahid Habib

2011-01-01

Full Text Available FUNDAMENTO: Há grande interesse no uso de proteína C-reativa de alta sensibilidade (PCR-as para avaliação de risco. Altos níveis de PCR-as no início da síndrome coronária aguda (SCA, antes da necrose tecidual, pode ser um marcador substituto para comorbidades cardiovasculares. OBJETIVO: Dessa forma, nosso objetivo foi estudar diferentes medidas de seguimento de níveis de PCR-as em pacientes com SCA e comparar as diferenças entre infarto do miocárdio sem elevação do segmento ST (NSTEMI com pacientes apresentando elevação do segmento ST (STEMI. MÉTODOS: Este é um estudo observacional. Dos 89 pacientes recrutados, 60 apresentavam infarto agudo do miocárdio (IAM. Três níveis seriados de PCR-us, a nível basal na hospitalização antes de 12 horas após inicio dos sintomas, níveis de pico 36-48 horas após hospitalização e níveis de acompanhamento após 4 a 6 semanas foram analisados e comparados entre pacientes com (IAMCSST e sem supradesnivelamento do segmento ST (IAMSSST. RESULTADOS: Pacientes com IAMCSST tinham IMC significantemente mais alta quando comparados com pacientes IAMSSST. Os níveis de creatino quinase fração MB (CK-MB e aspartato aminotransferase (AST eram significantemente mais altos em pacientes com IAMCSST quando comparados com pacientes com IAMSSST (pFUNDAMENTO: Hay gran interés en el uso de proteína C-reactiva de alta sensibilidad (PCR-as para evaluación de riesgo. Altos niveles de PCR-as en el comienzo del síndrome coronario agudo (SCA, antes de la necrosis tisular, puede ser un marcador sustituto para comorbilidades cardiovasculares. OBJETIVO: De esa forma, nuestro objetivo fue estudiar diferentes medidas de seguimiento de niveles de PCR-as en pacientes con SCA y comparar las diferencias entre infarto de miocardio sin elevación del segmento ST (NSTEMI con pacientes presentando elevación del segmento ST (STEMI. MÉTODOS: Este es un estudio observacional. De los 89 pacientes reclutados, 60

Avaliação de projetos de eficiência energética no segmento baixa renda

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Oliveira, Felipe Conti de Souza

2012-01-01

O presente trabalho visa avaliar o resultado dos projetos de eficiência energética para o segmento baixa renda, comparando resultados de projetos de troca de equipamentos obsoletos por equipamentos novos e eficientes, com projeto de cunho educativo para o consumo eficiente de energia. Faz também parte do trabalho verificar os resultados das ações dos dois projetos combinados.

Segmentos de Distribuidores no Setor de Materiais Cirúrgicos: uma aplicação de análise multivariada Distributors Segments of the Division of Surgical Materials: an application of multivariate analysisSegmentos de Distribuidores en el Sector de Materiales Quirúrgicos: una aplicación de análisis multivariado

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PLATA, Juan Pablo França de la

2005-05-01

Full Text Available RESUMOEste estudo focalizou a análise de segmentos de distribuidores na categoria de produtos cirúrgicos no Brasil atendidos por uma grande empresa deste ramo de atividade. Foram levantadas informações sobre lucro bruto, vendas líquidas, classificação de crédito, área regional e região. As técnicas estatísticas utilizadas para a determinação dos segmentos e respectivas caracterizações foram a análise de conglomerados e de correspondência múltipla. Modelos de Lambin (2000 e Czinkota et al. (2001 serviram de referência para o desenvolvimento da segmentação do mercado de material cirúrgico. Observou-se que é possível classificar pela técnica de análise de conglomerados os segmentos para os distribuidores conforme os perfis diferenciados de vendas líquidas e lucro bruto. A análise de correspondência múltipla gerou um mapeamento que associou as faixas de vendas líquidas e lucro bruto às regiões brasileiras e às classificações de crédito designadas conforme o histórico dos clientes. Os resultados deste estudo podem servir de base para uma política de desconto dos preços de lista de produtos oferecidos conforme as características dos segmentos obtidos.ABSTRACTThis study focused on the analysis of segments of distributors in the category of surgical products in Brazil that are served by a big company that operates in this sector of activity. The information about gross profit, gross sales, credit classification, regional area and region has been considered. The statistical techniques to the definition of segments and their profiles were cluster analysis and multiple correspondences. Models of Lambin (2000 and Czinkota et al. (2001 have been utilized as reference for the development of the segmentation of surgical material market. It was observed that it is possible classifying through cluster analysis the segments of distributors according to differentiated profiles of gross sales and gross profit. The multiple

Carcinoma de pele no segmento craniofacial: Relato de 3 casos

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Iana Lara Pereira Maia

2014-09-01

Full Text Available O câncer de pele é a neoplasia mais frequente no Brasil. O tipo histológico mais comum é o carcinoma basocelular (CBC, 70% dos casos, seguido pelo carcinoma espinocelular (CEC e pelo melanoma. Relatamos três carcinomas de pele no segmento crânio facial, evidenciando as abordagens cirúrgicas realizadas. No caso 1, apresenta-se um CBC em hemiface submetido à exérese com retalho V-Y. No caso 2, destaca-se um CEC em couro cabeludo submetido à exérese com retalhos de rotação e da vizinhança. No caso 3, relata-se um CBC na região pré-auricular e no dorso nasal submetido à exérese com retalho de Limberg e de Rieger.

Segmentos anátomo-cirúrgicos arteriais do rim de cutia (Dasyprocta prymnolopha Anatomical-surgical arterial segments of the kidney in agouti (Dasyprocta prymnolopha

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Maria A.M. Carvalho

2008-05-01

Full Text Available Foram estudados 20 pares de rins decutias (Dasyprocta prymnolopha Wagler, 1831, com o objetivo de descrever os segmentos anátomo-cirúrgicos arteriais. As artérias renais foram injetadas com solução de Vinilite corada, e os rins foram submetidos à corrosão ácida para a obtenção dos moldes vasculares. Observou-se que as artérias renais da cutia, sempre únicas, dividiram-se em artéria setorial ventral e artéria setorial dorsal, caracterizando dois setores renais separados por plano avascular. As artérias setoriais penetraram no hilo renal (100% dos casos. Estes vasos deram origem aos ramos segmentares responsáveis pela irrigação de territórios independentes em cada setor, os segmentos arteriais renais. No rim direito foram observados 3 (60%, 4 (35% e 5 segmentos (5% no setor arterial ventral e 3 (30%, 4 (45%, 5 (20% e 6 (5% segmentos no setor dorsal e, à esquerda, 2(10%, 3 (55% e 4 (35% segmentos no setor ventral e 3 (25%, 4 (50% e 5 (25% no dorsal. Com base na distribuição arterial nos rins de cutia, observaram-se setores e segmentos arteriais independentes, sendo possível, desta forma, a realização de setoriectomia e segmentectomia nesta espécie.Twenty pairs of agouti (Dasyprocta prymnolopha Wagler, 1831 kidneys were studied to describe the arterial anatomical-surgical segments. The renal arteries were injected with stained acetate vinyl, followed by procedures of acid corrosion in order to obtain vascular casts. It was found that the renal artery is always single and bifurcated into ventral and dorsal sectorial arteries. The sectorial arteries reached the kidneys (100% of the cases through the hilus. These vessels gave origin to segmental branches responsible for kidney irrigation. At the right kidney, the ventral sectorial arteries gave origin to 3 (60% of the cases, 4 (35% and 5 (5% segmental branches; the dorsal sectorial arteries gave origin to 3 (30%, 4 (45%, 5 (20% and 6 (5% segmental arteries separated by a

Artrodesis cervical anterior mediante implante de tantalio: Resultados clínicos y radiológicos

OpenAIRE

Vicario, C.; Lopez-Oliva, F.; Sánchez-Lorente, T.; Zimmermann, M.; Asenjo-Siguero, J.J.; Ladero, F.; Ibarzábal, A.

2006-01-01

La discectomía cervical anterior con artrodesis intersomática (DCAA) es una técnica quirúrgica ampliamente aceptada en el tratamiento de la enfermedad discal cervical. Recientemente se han introducido con esta indicación las cajas de tantalio debido a sus excelentes propiedades mecánicas y biológicas. Presentamos los resultados iniciales clínicos y radiológicos de un estudio prospectivo de 24 pacientes intervenidos en nuestro servicio tras el empleo de cajas de tantalio en la DCAA. La evaluac...

Multiplicación in vitro de segmentos nodales del clon de ñame Blanco de Guinea (Dioscorea cayenensis - D. rotundata ) en sistemas de cultivo semiautomatizado

OpenAIRE

Manuel Cabrera Jova; Rafael Gómez Kosky; Sergio Rodríguez Morales; Jorge López Torres; Aymé Rayas Cabrera; Milagros Basail Pérez; Arletys Santos Pino; Víctor Medero Vega; Germán Rodríguez Rodríguez

2009-01-01

Con el empleo del sistema de inmersión temporal fue posible incrementar la multiplicación in vitro de los segmentos nodales en el clon de ñame Blanco de Guinea. Con este tipo de sistema de cultivo se obtuvieron los más altos valores para la altura de la planta, número de entrenudos por planta, así como para la masa fresca y seca de las mismas. Las condiciones de cultivo creadas en el sistema de inmersión temporal para la multiplicación in vitro de los segmentos nodales lograron el más alto co...

Contribuição ao estudo das fontes arteriais do encéfalo: arterjografia toracocervical mediante hiperpressão pulmonar

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Oswaldo Ricciardi-Cruz

1963-12-01

Full Text Available Êste trabalho versa sôbre a visibilização das fontes arteriais do encéfalo mediante injeção de substância radiopaca por via carotídea, graças ao bloqueio circulatório resultante do aumento da pressão intrapulmonar. São consideradas fontes arteriais encefálicas as carótidas comuns, as artérias vertebrais, o tronco braquiocefálico e os segmentos pré-vertebrais das artérias subclávias. A punção arterial, transcutânea, é feita em uma das carótidas comuns ou, excepcionalmente, no tronco braquiocefálico ou na artéria subclávia (segmento pré-vertebral. Para aumentar a pressão intrapulmonar, o pulmão do paciente é insuflado com oxigênio através da sonda traqueal munida de "cuff". Uma válvula, colocada entre a fonte de oxigênio e a sonda traqueal, permite controlar a pressão intrapulmonar, que não deve exceder a 75 mm Hg. A injeção de substância contrastante é feita em 2 a 3 segundos e deve ser iniciada assim que a pressão intrapulmonar atinge o valor de 75 mm Hg, prèviamente fixado na válvula. A compressão digital da carótida a jusante do ponto de inserção da agulha tem sido recurso complementar eficiente, proporcionando visibilização de tôdas as artérias da região de modo nítido e constante. São expostos os resultados de 46 exames realizados segundo a técnica descrita. Nenhum caso de acidente foi registrado. Embora haja ainda alguns pontos obscuros e pormenores de técnica que devem ser aperfeiçoados ou modificados, a simplicidade e a segurança do método permitem situá-lo em posição vantajosa entre seus congêneres.

Reemplazo del esófago con segmentos pediculados de yeyuno

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Alejandro García Gutiérrez

1998-04-01

Full Text Available Se presentan 42 esofagoplastias con segmentos pediculados de yeyuno. Se exponen las indicaciones, los principales detalles de la técnica, las complicaciones, la mortalidad y los resultados tardíos. En el 80,9 % de los pacientes la indicación fue la acalasia (megaesófago o fracaso de la técnica de Heller y la estenosis no dilatable secundaria a la esofagitis por reflujo. En 4 pacientes se usó una nueva técnica por una vía combinada, abdominal y torácica derecha. La complicación más frecuente fue la dehiscencia de la anastomosis esofagoyeyunal (6 pacientes con 2 fallecimientos. La mortalidad posoperatoria fue de 12,0 %, la cual disminuyó a 5,0 % en los últimos 20 pacientes operados. El segmento yeyunal interpuesto cumplió eficientemente las funciones de tránsito y esfinteriana del esófago. Se concluye que esta técnica se debe emplear para el reemplazo del esófago distal en las estenosis benignas que no pueden ser resueltas con métodos más conservadores y excepcionalmente, en otros procesos patológicos, y para las sustituciones totales y subtotales del esófago, cuando no existe otra alternativa2 esophagoplastias with pedunculated segments of jejunum were presented. The indications, the main details of the technique, the complications, mortality and the late results are exposed. In 80,9 % of the patients the indications were achalasia (megaesophagus or failure of Heller`s technique and the nondilatable stenosis to reflux esophagitis. A new technique by a combined, abdominal and right thoracic route was used in 4 patients. The dehiscence of the esophagojejunal anastomosis was the most common complication (6 patients with 2 deaths. Postoperative mortality was 12.0 %, which decreased to 5.0 % in the last 20 patients operated on. The interposed jejunal segment fulfilled efficiently the transit and sphincteral functions of the esophagus. It is concluded that this technique should be used to replace the distal esophagus in bening

Obesidade em adultos de segmentos pauperizados da sociedade

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Marinho Sheila Pita

2003-01-01

Full Text Available O aumento da incidência de obesidade em segmentos pauperizados da sociedade levanta a questão sobre sua etiologia. Este trabalho pretende caracterizar a prevalência de sobrepeso e obesidade nestas populações. Participaram da pesquisa 390 famílias, incluindo 782 indivíduos com idades iguais ou maiores de 19 anos, dos quais 360 (46,0% eram homens e 422 (54,0% mulheres. As prevalências de obesidade entre os homens das zonas urbana e rural foram de 5,6% e 5,8%, respectivamente. Em relação ao sobrepeso, esta incidência foi de cerca de 25% em ambas as regiões, evidenciando-se aumento com a idade. As prevalências de obesidade entre homens e mulheres foram, respectivamente, de 5,6% e 21,6% (p<0,05. Entre as mulheres a ocorrência de obesidade aumentou discretamente com a idade, com prevalências padronizadas de 19,8% na zona urbana e 23,4% na rural. Considerando tratar-se de uma população pauperizada, o excesso de peso, que atinge principalmente as mulheres, tem etiologia complexa e precisa ser melhor estudado.

Historia natural de la oclusión aguda de gran arteria de la circulación cerebral anterior : serie clínica de 120 pacientes.

OpenAIRE

Hernández Pérez, María

2012-01-01

: Para estudiar la historia natural del ictus isquémico por oclusión de gran vaso de la circulación anterior se seleccionó una muestra prospectiva de pacientes con ictus agudo que no recibieron terapias de reperfusión en los que se confirmó una oclusión de gran vaso de la circulación anterior mediante Dúplex transcraneal. El 74% de los pacientes tuvo mal pronóstico. Los pacientes con oclusión de la a.carótida interna terminal y de la a.cerebral media proximal tuvieron peor pronóstico funciona...

Proporção entre os segmentos do anel da valva tricúspide normal: um parâmetro para realização da anuloplastia valvar Proportion among the segments of the normal tricuspid valve annulus: parameter for valve annuloplasty

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Fernando Antoniali

2006-09-01

Full Text Available OBJETIVO: Determinar a proporção existente entre os segmentos do anel da valva tricúspide normal em humanos. MÉTODO: Foram estudados 30 corações de cadáveres humanos não formolizados, com menos de 6h de período post-mortem, sem lesões congênitas ou adquiridas e com valvas tricúspides continentes. A continência valvar foi confirmada por injeção de água sob pressão no interior do ventrículo direito estando a valva pulmonar fechada. Fotos digitais da valva tricúspide com o anel valvar íntegro, e após secção e retificação, foram avaliadas por programa de computador. Compararam-se as medidas médias e as razões entre elas nas condições de anel íntegro e retificado. RESULTADOS: Com o anel valvar íntegro, os valores médios do perímetro, segmento septal e ântero-posterior foram 105mm (±12,7, 30,6mm (±3,7 e 74mm (±9,4, respectivamente. Com o anel valvar retificado, os valores médios foram 117,5mm (±13,3, 32mm (±3,7, 46,3mm (±8,3 e 39,1mm (±8,5, respectivamente para perímetro, segmento septal, anterior e posterior. As razões médias entre o segmento ântero-posterior e o septal foram 2,43 (±0,212 e 2,67 (±0,304, respectivamente, em anéis íntegros e retificados. Houve diferenças significantes nas medidas do perímetro (pOBJECTIVE: The purpose of this study was to determine the proportions among the segments of the human tricuspid valve annulus. METHODS: A descriptive autopsy study was made of 30 human hearts without fixation, within six hours of death, without congenital or acquired lesions and without tricuspid regurgitation. Tricuspid valve insufficiency was excluded by the infusion of pressurized water in the right ventricle with the pulmonary valve closed. Digital images of the tricuspid ring in its anatomical position and after flattening were analyzed by specific software. The mean measurements and ratios were compared in the two different situations. RESULTS: The mean measurements of the perimeter

MARKETING DE RELACIONAMENTO E FIDELIZAÇÃO: UMA ABORDAGEM NO SEGMENTO “CLIENTE ESTILO” EM UMA AGÊNCIA BANCÁRIA

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Adriano Moreira dos Santos

2011-08-01

Full Text Available Este trabalho tem como tema o Marketing de Relacionamento, que diz respeito à fidelização de clientes, consequência de um processo de segmentação com ênfase no atendimento. Objetiva estudar e analisar o atendimento diferenciado aos clientes do Segmento Estilo, pessoa física, da Agência X, do Banco do Brasil, identificando e comentando os possíveis atributos que influenciam na satisfação e, por sua vez, na fidelização desses clientes. Desenvolve-se este estudo através de levantamento bibliográfico e documental, bem como por meio de uma pesquisa do tipo descritiva, a partir de estudo de caso em uma agência bancária, onde são pesquisados vários atributos em relação ao atendimento, aos serviços prestados pelo banco, ao relacionamento do banco com o cliente, questões que interferem na fidelização e na satisfação dos clientes do segmento estudado. Ao final deste estudo, confirmou-se que vários aspectos devem ser considerados no atendimento diferenciado aos clientes do segmento pesquisado, a fim de satisfazê-los e fideliza-los. Dentre esses aspectos, destacam-se: a eficiência e agilidade no atendimento, indo ao encontro das necessidades dos clientes; a capacidade de soluções de problemas; o bom relacionamento entre cliente e banco; o atendimento segmentado fortalece a relação de parceria entre banco e cliente. Palavras-chave: Marketing. Relacionamento. Fidelização. Cliente Estilo. Agência Bancária.

Análise de rentabilidade dos segmentos de mercado de empresa distribuidora de mercadorias

OpenAIRE

Wernke,Rodney; Lembeck,Marluce

2004-01-01

O artigo apresenta possíveis aplicações do conceito de margem de contribuição para avaliação de desempenho de segmentos comerciais, voltando-se mais especificamente para empresas que operam no ramo de distribuição de mercadorias. São comentadas e exemplificadas situações em que a margem de contribuição pode servir como ferramenta de apoio aos gestores da área de vendas para averiguar a rentabilidade de produtos, linhas de mercadorias, territórios de venda, canais de distribuição, clientes e v...

UN SEGMENTO DEL TURISMO INTERNACIONAL EN AUGE: EL TURISMO DE CAZA

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Juan Ignacio Rengifo Gallego

2008-01-01

Full Text Available El número de turistas internacionales viene creciendo de forma continuada desde que existen fuentes estadísticas. Este crecimiento, que no sólo ha sido cuantitativo, sino espacial, ha ido acompañado de una segmentación del mercado en función de las motivaciones. Entre estos segmentos se halla el turismo cinegético, modalidad que ha experimentado un importante crecimiento en los últimos años por diversos motivos. Este incremento ha ido asociado a la movilidad de un porcentaje importante de cazadores de Europa y Estados Unidos, a la existencia de una gran variedad de especies cinegéticas en el mundo que se distribuyen de forma irregular por el territorio y al desarrollo de un entramado empresarial que participa en la comercialización de la caza.

Fratura tipo explosão da coluna torácica e lombar: correlação entre o segmento biomecânico sagital acometido e as alterações estruturais da vértebra fraturada

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Matheus Luís da Silva

2013-01-01

Full Text Available OBJETIVO: Analisar as fraturas tipo explosão da coluna torácica e lombar e fazer a correlação entre o segmento biomecânico sagital acometido e as alterações estruturais da vértebra fraturada. MÉTODOS: Estudo retrospectivo de 72 pacientes com fraturas tipo explosão da coluna torácica e lombar. O estreitamento do canal vertebral, o colapso vertebral e a cifose local foram avaliados em três segmentos distintos: torácico, transição toracolombar e lombar. RESULTADOS: Houve diferença estatística significativa (p < 0,05 dos valores do estreitamento do canal vertebral e cifose local nos diferentes segmentos da coluna vertebral avaliados. CONCLUSÃO: As fraturas tipo explosão da coluna torácica e lombar, embora apresentem características semelhantes, independentemente do local de ocorrência, sofrem influência direta do segmento biomecânico sagital no que diz respeito às alterações estruturais que ocorrem na vértebra fraturada.

Desafios da radiodifusão sonora na convergência multimídia: o segmento musical jovem

OpenAIRE

Luiz Artur Ferraretto; UCS/RS

2008-01-01

Este texto faz uma reflexão sobre as origens, o desenvolvimento e as perspectivas do segmento musical jovem nas emissoras de rádio. Parte do papel histórico do veículo na constituição, de início, da categoria social representada pela juventude e, na seqüência, no tratamento desse como público consumidor. Chega-se, assim, ao momento atual, um cenário de multiplicidade de ofertas marcada pela presença da internet e...

Estratégias de precificação em pequenas empresas do segmento comercial

OpenAIRE

Göller, Tamires Kryszczun

2015-01-01

O presente estudo visa analisar os principais métodos para formação de preços com ênfase no segmento comercial, norteada por um estudo de caso de uma loja comercial. A formação do preço de venda pode definir a lucratividade desejada pelos proprietários, mas isso não é um processo simples, pois existem diversas formas de precificação, as que são baseadas em custos (mark-up); concorrência e valor percebido pelo cliente. A precificação baseada em custos considera os elementos que compõem o custo...

Relación del segmento vertebral CO-CI con la cefalea cervigogénica

OpenAIRE

Marco Blanco, Raquel

2014-01-01

Se ha elegido para este trabajo el caso clínico de una paciente de 52 años con cefalea cervicogénica debido a la importante prevalencia de esta afectación en la sociedad actual. Es una clínica más frecuente en mujeres de mediana edad, por ello se expone el caso de una paciente con esas características. Otro motivo de la elección de esta paciente en concreto ha sido que la limitación de su rotación cervical venía dada principalmente por una alteración del segmento C0-C1, ya q...

O MERCADO DE FRANQUIAS E PEQUENAS EMPRESAS: UM ESTUDO SOBRE O SEGMENTO CAFETERIA

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Ernani Cesar de Freitas

2008-01-01

Full Text Available O presente artigo tem como objetivo identificar fatores que influenciam o empreendedor em optar por uma franquia ou por um negócio independente no ramo de cafeteria, demonstrando as possíveis vantagens e desvantagens do sistema de franchising nesse segmento. A pesquisa descritiva realizou-se através de questionários estruturados, aplicados a franqueadores e a franqueados integrantes do sistema franchising de cafeteria no Brasil. Os resultados obtidos na pesquisa demonstram que existem diversos motivos que podem influenciar o empreendedor na escolha desse tipo de negócio; existem vantagens e desvantagens que devem ser avaliadas adequadamente para subsidiar a tomada de decisão do empreendedor. Palavras-chave: Franquias. Franchising. Empreendedor. Cafeteria.

Resultados del tratamiento quirúrgico en aneurismas intracraneales múltiples de la circulación anterior

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Armando Alemán Rivera

2001-09-01

Full Text Available Se realiza un análisis de 10 pacientes con aneurismas múltiples de la porción anterior del polígono de Willis, los cuales representan el 10 % de todos los pacientes con aneurismas operados en el Servicio de Neurocirugía del Hospital Universitario «Arnaldo Milián Castro» de Santa Clara, Villa Clara. En 2 pacientes, los sacos aneurismáticos se localizaban bilateralmente. En un enfermo, la operación fue unilateral, mientras que en el otro, donde los aneurismas se localizaban en ambas arterias cerebrales medias, segmento M2 (aneurismas en espejo, el abordaje se realizó en 2 tiempos quirúrgicos. Todos los sacos aneurismáticos se presillaron y se reportó una mortalidad del 10 %An analysis of 10 patients with multiple aneurysms of the anterior portion of the circle of Willis that accounted for 10 % of all patients with aneurysms operated on at the Neurosurgery Service of "Arnaldo Milián Castro" Teaching Hospital of Santa Clara, Villa Clara, was made. The aneurysmatic sacs were bilaterally located in 2 patients. In one patient, the operation was unilateral, whereas in the other one, in whom the aneurysms were located in both middle cerebral arteries, M2 segment (mirror aneurysms, the operation was performed in 2 surgical times. All the aneurysmatic sacs were stapled and a 10 % mortality was re

Anterior perineal hernia after anterior exenteration

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Ka Wing Wong

2017-10-01

Full Text Available Perineal hernia is a rare complication of anterior exenteration. We reported this complication after an anterior exenteration for bladder cancer with bleeding complication requiring packing and second-look laparotomy. Perineal approach is a simple and effective method for repair of perineal hernia.

Aberraciones corneales anteriores y posteriores medidas mediante imágenes de Scheimpflug en el queratocono en niños

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Neisy Bernal Reyes

2015-10-01

Conclusiones: Las mediciones de las aberraciones de la superficie anterior medidas por imágenes de Sheimpflug son útiles en la detección precoz de queratocono en niños. Las aberraciones de superficie posterior corneal no son útiles ya que no están acordes a las propiedades ópticas de la córnea.

COMPARISON OF THE RESISTANCE OF THREE CERAMIC SYSTEMS IN ANTERIOR FIXED PROSTHETIC SEGMENTS. A FINITE ELEMENT ANALYSIS

OpenAIRE

Pineda Duque, Érika Alejandra; Escobar Restrepo, Julio César; Latorre Correa, Federico; Villarraga Ossa, Junes Abdul

2013-01-01

Introducción: el propósito de este estudio fue evaluar mediante el método de elementos finitos, la distribución de los esfuerzos en prótesis parcial fija (PPF) de tres unidades en la zona anterior, elaborados en tres sistemas cerámicos con diferentes variaciones en los conectores. Métodos: se modelaron cuatro tramos de PPF; tres de estos representaron los sistemas cerámicos: disilicato de litio, alúmina y circona y un cuarto modelo de disilicato de litio con un conector de 9 mm2 de área. Las ...

La fisioterapia en el proceso de readaptación físico – deportiva mediante el uso de gimnasio en el paciente postoperado de reconstrucción de ligamento cruzado anterior. Caso clínico

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Raúl Ernesto Cortés González

2017-01-01

Full Text Available La ruptura del ligamento cruzado anterior (LCA tiene gran incidencia en deportistas, el procedimiento quirúrgico es vital para la restauración de su funcionamiento, pero sin tratamiento fisioterapéutico posquirúrgico, la cirugía no cumple con las expectativas deseadas. En este artículo, se analiza el caso clínico de un paciente femenino de 28 años, futbolista recreativa, intervenida quirúrgicamente por reconstrucción de LCA izquierdo con autoinjerto de semitendinoso, que recibió tratamiento fisioterapéutico durante 7 meses, mediante un macro ciclo de entrenamiento periodizado por fases de recuperación biológica en un gimnasio, con el uso de pesas y entrenamiento funcional deportivo. Al término del tratamiento, el miembro sano mostró 135° en flexión de rodilla, 48 centímetros en circunferencia de muslo, 28 repeticiones en leg curl y 30 repeticiones en leg extension; mientras que el miembro afectado mostró 130° en flexión de rodilla, 46.5 centímetros en circunferencia de muslo, 26 repeticiones en leg curl y 28 repeticiones en leg. El tratamiento puede tomarse como guía para manejar reconstrucciones de LCA y otras lesiones de rodilla.

Anterior cervical fusion: the role of anterior plating.

Science.gov (United States)

Daffner, Scott D; Wang, Jeffrey C

2009-01-01

Treatment of cervical pathology requires a clear understanding of the biomechanical benefits and limitations of cervical plates, their indications, and their associated complications. The use of anterior cervical plates has evolved significantly since their early application in cervical trauma. They have become widely used for anterior cervical decompression and fusion for cervical spondylosis. Plate design has undergone significant refinement and innovation, from the initial unlocked plates requiring bicortical purchase to the latest rotationally and translationally semiconstrained dynamic plates. Excellent clinical results have been reported for single-level anterior cervical decompression and fusion with or without plate fixation; however, the addition of an anterior cervical plate clearly leads to earlier fusion and better clinical results in longer fusions. Longer fusions should ideally consist of corpectomies and strut grafting because the decreased number of fusion surfaces tends to lead to higher fusion rates. Although anterior plate fixation leads to higher fusion rates in fusions of three or more levels, the associated pseudarthrosis rate is still high. The use of dynamic plates, through increased load sharing across the graft and decreased stress shielding, may improve fusion rates, particularly in long fusions. Nevertheless, adjuvant posterior fixation is recommended for fusions of more than three vertebral levels. Anterior plate fixation may be of particular benefit in the management of traumatic injuries, in revision settings, and in the treatment of smokers. Complications unique to plate fixation include hardware breakage and migration as well as ossification of the adjacent disk levels.

Internacionalización de PYMES argentinas orientadas a segmentos no masivos del mercado en países desarrollados

OpenAIRE

González, Andrea; Hallak, Juan Carlos

2013-01-01

El trabajo analiza la inserción internacional de PYMES argentinas orientadas a segmentos no masivos del mercado en países desarrollados en sectores de tecnología media y baja. Este tipo de inserción involucra productos que se caracterizan por su alto grado de calidad y/o customización. Basados en estudios realizados en siete sectores productores de bienes o servicios que poseen estas características, describimos dos tipos diferentes de inserción. La primera es la exportación de bienes diseñad...

Variación de los segmentos corporales de escolares patagónicos en barrios con diferentes NBB

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Botterón, Tania Vanesa

2007-01-01

Full Text Available Los segmentos corporales presentan diferentes períodos de maduración, reflejando su relación con la nutrición y condicionando la expresión del dimorfismo sexual (DS. El objetivo del trabajo fue evaluar el DS observado en el crecimiento de escolares de 6 a 14 años de barrios con diferentes NBI -(NBI alto y (NBI bajo-. Se estudió transversalmente una muestra de 500 mujeres y 570 varones de la ciudad de Puerto Madryn, Chubut. Se relevaron: estatura total, estatura sentada (ES y se calculó la longitud del segmento inferior (LSI y el índice córmico (IC. Se utilizaron pruebas de Wilcoxon, p= 0.05. La ES presentó para todas las edades valores nominales mayores en el NBI bajo (p=0.3 respecto al NBI alto (p=0.22. De igual manera se comportó la LSI (p=0.06 NBI bajo; (p=0.09 NBI alto. El IC presentó dos eventos evidentes en cada sexo: uno cercano a los 6.5 años y hasta alrededor de los 9-10 años, donde el valor del IC fue menor en las mujeres respecto de los varones y otro a los 10.5-12 años, edad a la cual los valores femeninos superaron a los masculinos (NBI bajo p=0.16; NBI alto p=0.22. La ref. NHANES presentó un comportamiento similar. Los resultados confirman la influencia que ejercen las desigualdades sociales -como agentes estresantes- sobre el crecimiento de la población infantil estudiada, cuya respuesta adaptativa difiere a la de otras poblaciones argentinas y americanas.

Cryopreserved tracheal segments: a new tool for bench surgical training in thoracic surgery Segmentos criopreservados de traqueia: uma nova ferramenta para auxiliar o treinamento na cirurgia torácica

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Avelina Sotres-Vega

2012-08-01

Full Text Available PURPOSE: To present a new low-cost high fidelity bench model of cryopreserved trachea that can be used to learn surgical skills from medical students to cardiothoracic surgery fellows. METHODS: Ten tracheas were harvested from ten non-trachea related research dogs at the moment of euthanasia. Each trachea was trimmed in six or seven rings segments. They were cryopreserved and stored during 60 days. The day programmed for surgical skills practice, they were thawed to room temperature. RESULTS: Forty segments have been used. After defrosting, all the segments kept their normal anatomic shape and structural integrity. Two incisions were made on every tracheal segment and sutured with running or separate stitches with 5-0 polypropilene. There were no complications such as cartilage ruptures, neither tears on the mucosae, the cartilages nor the membranous posterior membrane. CONCLUSIONS: The cryopreserved trachea is a high fidelity, practical, reproducible, portable, low-cost bench model. It allows cardiothoracic fellows to learn how to handle a trachea, as well as to perfect their surgical and suture abilities before applying them on a real patient's trachea.OBJETIVO: Apresentar novo modelo de traquéia criopreservada de baixo custo e alta fidelidade que pode ser usado tanto por estudantes de medicina como por cirurgiões cardiotorácicos no aprendizado e desenvolvimento de suas habilidades cirúrgicas. MÉTODOS: Foram coletados amostras de dez traquéias de dez cães utilizados para pesquisa após a eutanásia. Cada segmento de traquéia foi dividida em seis ou sete anéis, criopreservadas e armazenadas durante 60 dias. No dia programado para a prática cirúrgica os segmentos foram descongelados a temperatura ambiente. RESULTADOS: Foram utilizados 40 segmentos no estudo. Após o descongelamento todos os segmentos mantiveram sua forma anatômica e sua integridade estrutural. Foram realizadas duas incisões em cada segmento traqueal que foram

anomalous left anterior cerebral artery with hypoplastic right anterior ...

African Journals Online (AJOL)

2018-02-28

Feb 28, 2018 ... We report an extremely rare anomalous variation of left anterior cerebral artery arising from the ... paraclinoid internal carotid artery and right ... Studies on the arteries of the brain: II-The anterior cerebral artery: Some anatomic ...

Fratura tipo explosão da coluna torácica e lombar: correlação entre o segmento biomecânico sagital acometido e as alterações estruturais da vértebra fraturada

OpenAIRE

Silva,Matheus Luís da; Tisot,Rodrigo Arnold; Vieira,Juliano Silveira Luiz; Santos,Renato Tadeu dos; Tisot,Orley Fauth

2013-01-01

OBJETIVO: Analisar as fraturas tipo explosão da coluna torácica e lombar e fazer a correlação entre o segmento biomecânico sagital acometido e as alterações estruturais da vértebra fraturada. MÉTODOS: Estudo retrospectivo de 72 pacientes com fraturas tipo explosão da coluna torácica e lombar. O estreitamento do canal vertebral, o colapso vertebral e a cifose local foram avaliados em três segmentos distintos: torácico, transição toracolombar e lombar. RESULTADOS: Houve diferença estatística si...

Análisis del comportamiento del segmento lumbar, no artrodesado, en escoliosis idiopática del adolescente de curva Lenke tipo 1 Análise do comportamento do segmento lombar sem artrodese em escoliose idiopática do adolescente com curvatura de Lenke tipo 1 Analysis of the behavior of the lumbar segment without spinal fusion in adolescent idiopathic scoliosis with curvature of lenke type 1

Directory of Open Access Journals (Sweden)

Nicolás Siderakis

2012-06-01

Full Text Available OBJETIVO: Determinar el comportamiento del segmento lumbar, no artrodesado, en el plano coronal luego de fusiones torácicas selectivas en pacientes con escoliosis idiopática del adolescente con curvas Lenke 1. MÉTODOS: Se evaluaron 21 pacientes con un seguimiento promedio de 29,71 meses (rango: 24-60 meses mediante análisis clínico y radiográfico retrospectivos de pacientes que presentaron escoliosis idiopáticas del adolescente, con curvas Lenke tipo 1 (ABC. RESULTADOS: En todos los pacientes, en los que se produjo un desequilibrio en el plano coronal, se constató la progresión del valor angular de la curva lumbar no artrodesada al final del seguimiento. CONCLUSIÓN: La curva lumbar no artrodesada progresó al final del seguimiento, en todos los pacientes con desequilibrio confirmado en el plano coronal (3/21.OBJETIVO: Determinar o comportamento do segmento lombar sem artrodese no plano coronal, após fusões torácicas seletivas na escoliose idiopática do adolescente com curvaturas de Lenke 1. MÉTODOS: Foram avaliados 21 pacientes com acompanhamento médio de 29,71 meses (faixa: 24 a 60 meses, por meio de análise clínica e radiográfica retrospectiva de pacientes que apresentaram escoliose idiopática do adolescente com curvaturas de Lenke tipo 1 (ABC. RESULTADOS: Constatou-se aumento do ângulo da curva lombar sem artrodese no final do acompanhamento em todos os pacientes que apresentaram desequilíbrio no plano coronal. CONCLUSÃO: O total dos pacientes nos quais se confirmou desequilíbrio no plano coronal (3/21 apresentaram progressão da curva lombar sem artrodese no final do acompanhamento.OBJECTIVE: To determine the outcome of lumbar segment without arthrodesis in the coronal plane, after selective thoracic fusions for with curvature of Lenke type 1 adolescent idiopathic scoliosis with curvature of Lenke type 1. METHODS: Twenty one patients were evaluated, with a mean follow-up of 29.71 months (range: 24-60 months with

Caracterización a impacto de caucho reciclado mediante elementos finitos

OpenAIRE

Escribano Castro, Ane

2015-01-01

Análisis de caucho reciclado de manera hiperelástica mediante métodos de ajuste de Mínimos Cuadrados con programa MATLAB y Curve fitting mediante ANSYS. Para la parte viscoelástica se usa Algoritmo de Optimicación con MATLAB. Comprobación de resultados y fiabilidad.

Teste de esforço: alterações do segmento ST restritas à fase de recuperação

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Oliveira Fº J. A.

1999-01-01

Full Text Available OBJETIVO: Determinar a incidência de doença coronária aterosclerótica (DCA e/ou isquemia miocárdica em pacientes (pt com alterações do segmento ST restritas à fase de recuperação (ASTRR do teste ergométrico. CASUÍSTICA E MÉTODO: Estudo retrospectivo em 19 pacientes não consecutivos com ASTRR, através da cinecoronariografia e/ou cintigrafia de esforço planar. Amostra de 18 homens, uma mulher, com idade de 58 ± 9 anos, 18 sintomáticos. RESULTADOS: ASTRR correspondem a segmentos ST infra-desnivelados de 1 a 4 mm da linha de base, com inversão da onda T durante a recuperação precoce (2pt, tardia (14 pt. Foi documentada DCA em 14 pt (nove submetidos à cirurgia de revascularização; miocardiopatia hipertensiva com coronárias normais em 3 pt e prolapso de válvula mitral em 1 pt. Em 13 casos a cinecoronariografia e/ou cintilografia de esforço foram realizados dentro de seis meses do Teste Ergométrico, sendo a presença de DCA e ou isquemia miocárdica detectadas em 8 pt. Em 3 pt, testes ergométricos sucessivos mostraram ASTRR reprodutíveis em dois casos. CONCLUSÃO: Os autores relatam a elevada prevalência de DCA e ou hipoperfusão transitória na cintigrafia de esforço em homens sintomáticos de meia idade com ASTRR no teste de esforço.

Epiderme dos segmentos foliares de Mauritia flexuosa L. f. (Arecaceae em três fases de desenvolvimento Epidermis of leaf segments from Mauritia flexuosaL. f. (Arecaceae on three phases of development

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Mahedy Araújo Bastos Passos

2006-12-01

Full Text Available São apresentados os dados anatômicos da epiderme dos segmentos foliares de Mauritia flexuosa L. f. (Arecaceae em três fases do desenvolvimento. Os segmentos foliares foram analisados em toda a extensão do limbo. As células intercostais da epiderme das faces adaxial e abaxial evidenciam-se com paredes sinuosas, retangulares e orientadas longitudinalmente em relação ao eixo do segmento foliar com acentuada presença de corpos de sílica esférico-espinulosos. As células epidérmicas da região costal de ambas as faces apresentam paredes retas e variam entre curtas, longas e arredondadas. Os tricomas são simples, unicelulares, longos, com base mais alargada. Os segmentos foliares de M. flexuosa são anfiestomáticos com estômatos tetracíticos. Em secção transversal a epiderme foliar é uniestratificada com câmara subestomática ampla. Os resultados obtidos não demonstraram variações expressivas entre as três fases de desenvolvimento e os caracteres encontrados parecem ser comuns a outras palmeiras.Anatomic data on the epidermis leaf segments from Mauritia flexuosa L. f. (Arecaceae are presented on three phases of development. Leaf segments were analyzed on the all extension of leaf. Both adaxial and abaxial epidermal cells stand out with sinuous walls, rectangular and longitudinally oriented to the foliar axis with the marked presence of spherical- spiny silica bodies. The back epidermal cells of both surfaces present straight walls and vary among short, long and round. Trichomes are unicellular, simple, long, with a wider base. Leaf segments from M. flexuosa are anphistomatic with tetracitic type stomats. In a cross-section the leaf skin is unistratified with a broad substimatic chamber. The findings obtained showed no significant variations among the three phases of development and the characters that were found appear to be common on other palm trees.

Válvula de uretra anterior Anterior urethral valves

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Silvio Tucci Jr.

2003-02-01

Full Text Available Objetivo: apresentar os aspectos clínicos, diagnósticos e terapêuticos de pacientes portadores de válvula da uretra anterior. Descrição: em dois neonatos, o diagnóstico presuntivo de patologia obstrutiva do trato urinário foi sugerido pela ultra-sonografia realizada no período pré-natal, confirmando-se o diagnóstico de válvula de uretra anterior pela avaliação pós-natal. Os pacientes foram submetidos a tratamento cirúrgico paliativo, com vesicostomia temporária e, posteriormente, definitivo, pela fulguração endoscópica das válvulas. Ambos evoluíram com função renal normal. Comentários: a válvula da uretra anterior é anomalia rara que deve ser considerada em meninos com quadro radiológico pré-natal sugestivo de obstrução infravesical, secundariamente à hipótese mais comum de válvula da uretra posterior. Ressaltamos a utilização da vesicostomia como derivação urinária temporária nestes casos, prevenindo potenciais complicações pela manipulação da uretra do recém-nascido.Objective: to discuss clinical signs, diagnostic tools and therapeutics of anterior urethral valves, an obstructive anomaly of the urinary system in males. Description: signs of urinary tract obstruction were identified on pre-natal ultrasound in two male fetuses and the diagnosis of anterior urethral valves was made through post-natal evaluation. As an initial treatment, vesicostomy was performed in both patients. Later, the valves were fulgurated using an endoscopic procedure. During the follow-up period both patients presented normal renal function. Comments: anterior urethral valves are a rare form of urethral anomaly that must be ruled out in boys with pre-natal ultrasound indicating infravesical obstruction. Vesicostomy used as an initial treatment rather than transurethral fulguration may prevent potential complications that can occur due to the small size of the neonatal urethra.

Perawatan Ortodontik Gigitan Terbuka Anterior

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Yuniar Zen

2014-06-01

Full Text Available Perawatan gigitan terbuka anterior telah lama dianggap sebagai tantangan bagi ortodontis. Prevalensi gigitan terbuka anterior antara 3,5% hingga 11% terdapat pada berbagai usia dan kelompok etnis, serta ada sekitar 17% pasien ortodonti memiliki gigitan terbuka. Stabilitas hasil perawatan gigitan terbuka anterior sangat sulit, karena adanya kombinasi diskrepansi anteroposterior dengan gigitan terbuka skeletal sehingga dibutuhkan tingkat keterampilan diagnosis dan klinis yang tinggi. Etiologi gigitan terbuka anterior sangat kompleks karena dapat melibatkan skeletal, dental, dan faktor-faktor habitual. Eliminasi faktor etiologi merupakan hal yang penting dalam perawatan gigitan terbuka anterior. Berbagai cara perawatan untuk koreksi gigitan terbuka anterior diantaranya bedah ortognatik dan perawatan ortodontik kamuflase, seperti high-pull headgear, chincup, bite blocks, alatfungsional, pencabutan gigi, multi-loop edgewise archwires dan mini implan. Stabilitas hasil perawatan adalah kriteria yang paling penting dalam menentukan cara perawatan gigitan terbuka anterior. Orthodontic Treatment of Anterior Open Bite. An anterior open bite therapy has long been considered a challenge to orthodontist. The prevalence of anterior openbite range from 3,5 % to 11% among various age and ethnic groups and it has been shown that approximately 17% of orthodontic patients have open bite. Stability of treatment result of anterior open bite with well-maintained results is difficult, because the combination of anteroposteriorly discrepancy with skeletal open bite requires the highest degree of diagnostic and clinical skill. The etiology is complex, potentially involving skeletal, dental and habitual factors. The importance of an anterior open bite therapy is to eliminate the cause of the open bite. Various treatment modalities for the correction of an anterior open bite have been proposed, orthognatic surgery and orthodontic camouflage treatment such as high

ANÁLISE DO DESEMPENHO DE EMPRESAS DO SEGMENTO DE CARNES E DERIVADOS LISTADAS NA BM&FBOVESPA

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Simone Sehnem

2012-10-01

Full Text Available O objetivo do trabalho consiste em analisar o desempenho econômico e financeiro das empresas frigoríficas que negociam ações na BM&FBOVESPA em uma série histórica que compreende um período de 5 anos. A fundamentação teórica resgata aspectos relacionados a internacionalização de empresas e estudos que relacionam internacionalização e desempenho. O trabalho foi desenvolvido por meio da utilização de dados das empresas do segmento de carnes e derivados, isto é, frigoríficos, disponibilizados no economática e que negociam ações na BM&FBOVESPA. No que diz respeito à forma de abordagem do problema, a presente pesquisa trabalha sob o enfoque quantitativo e classifica-se em uma pesquisa de cunho descritivo. Com relação aos procedimentos, classifica-se em uma análise de uma série histórica do desempenho econômico e financeiro das organizações de capital aberto pertencentes ao segmento de frigoríficos, o que permite fazer um diagnóstico dessas empresas. As contribuições desta pesquisa consistem em elucidar que ficou perceptível que as empresas lideres do setor, quais sejam JBS Friboi, BR Foods e Marfrig, em sua maioria ocupam a liderança nos indicadores de desempenho econômico analisados. São empresas que cresceram e se internacionalizaram nos últimos anos, aumentando o patrimônio, a estrutura produtiva e os rendimentos. Possuem maior capacidade de competir, por terem estruturas de escala e unidades industriais distribuídas nos diferentes continentes, o que lhes aufere ganhos em detrimento das empresas de porte menor. Conclui-se que a internacionalização impacta de maneira forte no desempenho das organizações analisadas no presente estudo

Coeficientes de proporcionalidade nas valvas atrioventriculares: estudo anatômico dos segmentos valvares em indivíduos normais Coefficients of proportions of the atrioventricular valves: an anatomical study of valvar segments of normal individuals

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Natália Martins Magacho de Andrade

2005-09-01

Full Text Available OBJETIVO: Descrever as relações anatômicas existentes entre as estruturas das valvas cardíacas, levando em consideração os segmentos dos anéis fibrosos e o volume ventricular esquerdo. MÉTODO: Analisaram-se fotografias digitais de 41 corações oriundos de necropsias feitas pelo Núcleo de Perícias Médico Legais. As fotos foram processadas em software em ambiente MATLAB®, que forneceu as medidas de perímetro e área valvares e o volume ventricular esquerdo. RESULTADOS: A média de idade dos indivíduos necropsiados foi de 33 anos, com 17 anos de desvio-padrão. Testaram-se diversas correlações envolvendo as valvas tricúspide e mitral, sendo encontradas correlações fortemente significativas entre a distância intercomissural (DIt e o perímetro do anel anterior (PA na valva tricúspide (r = 0,72 com pABSTRACT OBJECTIVE: To describe the anatomical relationships that exist between the heart valve structures taking into account the segments of the fibrous annuli and the left ventricular volume METHOD: Digital photographs of 41 hearts from autopsies performed by a coroner's office were analyzed. The photographs were processed using MATLAB® software, which supplies measurements of the valvar perimeter and area and the left ventricular volume. RESULTS: The average age of the corpses studied was 33 years old (standard deviation ± 17 years. Several ratios involving the tricuspid and mitral valves were tested, with strongly significant correlations found between the inter-commissural distance (ItD and the perimeter of the anterior annulus (PA of the tricuspid valve (r = 0.72; p-value < 0.05 and between the inter-commissural distance (ImD and the perimeter of the posterior annulus (PP of the mitral valve (r = 0.63; p-value < 0.05. The proportions between these parameters were PA/ItD = 1.36 ± 0.24 and PP/ImD = 1.38 ± 0.16. CONCLUSION: The proportions between the perimeter of the anterior annulus (tricuspid and the perimeter of the

Glaucoma facomórfico y ultrabiomicroscopia

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María Cristina González González

2015-01-01

Conclusiones: La ultrabiomicroscopia es un herramienta útil ya que permite una valoración completa del segmento anterior, aun en presencia de medios opacos y ayuda a determinar la relación del cristalino con las estructuras adyacentes y el probable mecanismo del glaucoma.

Catarata polar anterior piramidal deslocada para a câmara anterior causando edema de córnea: relato de caso Corneal edema caused by a pyramidal anterior polar cataract dislocated to the anterior chamber: case report

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Ramon Coral Ghanem

2004-08-01

Full Text Available Cataratas polares anteriores piramidais são opacidades cônicas que se projetam para a câmara anterior a partir da cápsula anterior do cristalino. Na grande maioria dos pacientes a opacidade permanece aderida e estável durante toda a vida. O objetivo deste trabalho é documentar uma manifestação incomum desse tipo de catarata: a deiscência espontânea das pirâmides para a câmara anterior causando descompensação endotelial e edema corneal bilateral. Relatamos o caso de uma paciente feminina, de 66 anos, branca, que apresentava edema corneal localizado inferiormente no olho direito associado à lesão nodular branco-esclerótica compatível com a pirâmide anterior da catarata polar. O olho esquerdo apresentava edema corneal difuso intenso e presença de uma catarata polar anterior com a região piramidal deslocada para a câmara anterior. Sabe-se que a pirâmide anterior pode permanecer inabsorvida na câmara anterior por longo período, pois é composta de tecido colágeno denso. Isto causa perda endotelial progressiva e edema corneal e deve ser considerada indicação de remoção cirúrgica da catarata polar anterior e de seu fragmento. Ressalta-se, também, a importância do bom senso no julgamento das cataratas polares anteriores, considerando-se tamanho da opacidade, simetria das opacidades e componente cortical associado, na tentativa de se evitar ambliopia.Pyramidal anterior polar cataracts are conical opacities that project into the anterior chamber from the anterior capsule of the lens. In the vast majority of patients the opacity remains bound and stable throughout life. We report an unusual complication of this type of cataract: spontaneous dehiscence of the pyramids to the anterior chamber causing bilateral endothelial damage and corneal edema. 66-year-old white woman presented with inferior corneal edema in the right eye and diffuse corneal edema in the left eye. A white nodular lesion was observed in the inferior angle

Anterior tibial stress fractures treated with anterior tension band plating in high-performance athletes.

Science.gov (United States)

Cruz, Alexandre Santa; de Hollanda, João Paris Buarque; Duarte, Aires; Hungria Neto, José Soares

2013-06-01

The non-surgical treatment of anterior tibial cortex stress fractures requires long periods of abstention from sports activities and often results in non-union. Many different surgical techniques have already been previously described to treat these fractures, but there is no consensus on the best treatment. We describe the outcome of treatment using anterior tibial tension band plating in three high-performance athletes (4 legs) with anterior tibial cortex stress fractures. Tibial osteosynthesis with a 3.5-mm locking compression plate in the anterolateral aspect of the tibia was performed in all patients diagnosed with anterior tibial stress fracture after September 2010 at Santa Casa Hospital. All of the fractures were consolidated within a period of 3 months after surgery, allowing for an early return to pre-injury levels of competitive sports activity. There were no infection, non-union, malunion or anterior knee pain complications. Anterior tibial tension band plating leads to prompt fracture consolidation and is a good alternative for the treatment of anterior tibial cortex stress fractures. Bone grafts were shown to be unnecessary.

Anterior ankle arthroscopy, distraction or dorsiflexion?

Science.gov (United States)

de Leeuw, Peter A J; Golanó, Pau; Clavero, Joan A; van Dijk, C Niek

2010-05-01

Anterior ankle arthroscopy can basically be performed by two different methods; the dorsiflexion- or distraction method. The objective of this study was to determine the size of the anterior working area for both the dorsiflexion and distraction method. The anterior working area is anteriorly limited by the overlying anatomy which includes the neurovascular bundle. We hypothesize that in ankle dorsiflexion the anterior neurovascular bundle will move away anteriorly from the ankle joint, whereas in ankle distraction the anterior neurovascular bundle is pulled tight towards the joint, thereby decreasing the safe anterior working area. Six fresh frozen ankle specimens, amputated above the knee, were scanned with computed tomography. Prior to scanning the anterior tibial artery was injected with contrast fluid and subsequently each ankle was scanned both in ankle dorsiflexion and in distraction. A special device was developed to reproducibly obtain ankle dorsiflexion and distraction in the computed tomography scanner. The distance between the anterior border of the inferior tibial articular facet and the posterior border of the anterior tibial artery was measured. The median distance from the anterior border of the inferior tibial articular facet to the posterior border of the anterior tibial artery in ankle dorsiflexion and distraction was 0.9 cm (range 0.7-1.5) and 0.7 cm (range 0.5-0.8), respectively. The distance in ankle dorsiflexion significantly exceeded the distance in ankle distraction (P = 0.03). The current study shows a significantly increased distance between the anterior distal tibia and the overlying anterior neurovascular bundle with the ankle in a slightly dorsiflexed position as compared to the distracted ankle position. We thereby conclude that the distracted ankle position puts the neurovascular structures more at risk for iatrogenic damage when performing anterior ankle arthroscopy.

Facoemulsificación en el síndrome iridocorneal endotelial

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Vladimir Torriente Torriente

Full Text Available Se presenta el caso de una paciente atendida en el Servicio de Catarata del Centro Oftalmológico «Enrique Cabrera» de La Habana, con el objetivo de describir el resultado de la cirugía de catarata por facoemulsificación en el síndrome iridocorneal endotelial, por la variante cho choo chop and flip faco. Se muestran las modificaciones biomicroscópicas del segmento anterior, tonometría, densidad celular endotelial y mejor agudeza visual corregida preoperatoria y postoperatoria. Como resultados sobresalientes se señala que biomicroscópicamente hubo mínimas modificaciones en el iris, se logró la normalización de la tensión ocular, se produjo pérdida de menos del 15 % de la densidad celular endotelial y la paciente logró agudeza visual postoperatoria óptima. Se concluye que la cirugía de catarata mediante facoemulsificación resultó una alternativa válida con mejoría visual en un caso con síndrome iridocorneal endotelial, con evolución estable de su enfermedad base.

A aprendizagem interorganizacional via parcerias estratégicas colaborativas na indústria de biotecnologia brasileira, segmento de saúde humana

OpenAIRE

Antonio Décio Passos Estrella

2009-01-01

Esta pesquisa tem o objetivo de fazer um estudo exploratório e explicativo da evolução da colaboração interorganizacional na indústria de biotecnologia no Brasil entre os anos de 2004 e 2008. A população escolhida foi o conjunto de firmas dedicadas de biotecnologia brasileiras, segmento de saúde humana. Para o mapeamento da população foram utilizadas informações da Fundação Biominas, da Fundação Biorio, da ABRABI Associação Brasileira de Empresas de Biotecnologia, das Fundações de Amparo a ...

Anterior ankle arthroscopy, distraction or dorsiflexion?

OpenAIRE

de Leeuw, P.A.J.; Golanó, P.; Clavero, J.A.; van Dijk, C.N.

2010-01-01

Anterior ankle arthroscopy can basically be performed by two different methods; the dorsiflexion- or distraction method. The objective of this study was to determine the size of the anterior working area for both the dorsiflexion and distraction method. The anterior working area is anteriorly limited by the overlying anatomy which includes the neurovascular bundle. We hypothesize that in ankle dorsiflexion the anterior neurovascular bundle will move away anteriorly from the ankle joint, where...

Nuevo esteroide tópico en el tratamiento del edema macular

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Ceija Molina Cisneros

Full Text Available El pilar principal de tratamiento de las inflamaciones oculares tanto postquirúrgicas como endógenas, se basa en el uso de esteroides. Aunque estos medicamentos son efectivos, su empleo no está exento de riesgos como la hipertensión ocular y la aceleración de la formación de la catarata, principalmente en el caso de los esteroides más fuertes como la prednisolona y la betametasona. Esta revisión estuvo encaminada a la profundización del conocimiento sobre la bioquímica y el desarrollo del difluprednate, nueva droga esteroidea sintética de alta potencia, cuyo uso está aprobado por la Food and Drug Administration (FDA para el tratamiento del edema macular después de la cirugía del segmento anterior. Se analizaron algunos aspectos de este medicamento off-label como la farmacocinética, el metabolismo, la distribución ocular del medicamento y utilidad en las fases I, II y III de ensayos clínicos sobre su utilización en pacientes con inflamaciones posoperatorias, tanto del segmento anterior como posterior y con uveítis anterior.

Atrofia girata de coróide e retina : relato de caso

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Oyamaguchi Emerson Kenji

2003-01-01

Full Text Available OBJETIVO: Relatar um caso de atrofia girata de coróide e retina com confirmação por meio da bioquímica do plasma. MÉTODO: Aferiu-se a melhor acuidade visual corrigida de ambos olhos (AO em tabela de Snellen. Foram realizados biomicroscopia do segmento anterior, refração, mapeamento de retina, angiografia fluoresceínica, campo visual e dosagem da ornitina sérica (aminoacidograma. RESULTADOS: Paciente de 22 anos, sexo feminino, cor branca, apresentando alta miopia e acuidade visual (AV 20/100 em AO. À biomicroscopia do segmento anterior apresentava catarata subcapsular posterior em AO. À oftalmoscopia foram verificadas lesões atróficas da coróide e da retina bem delimitadas em meia periferia de AO. O aminoacidograma constatou elevação correspondente ao complexo da ornitina. CONCLUSÃO: Relata-se um caso típico de atrofia girata, distrofia retiniana rara associada a hiperornitinemia.

Klapcast

OpenAIRE

Cortés Calle, Santiago; Martínez Baldión, Dora Margarita

2015-01-01

Es una plataforma de doble lado que tiene como objetivo fundamental acercar a los buscadores de talento de una forma eficaz y precisa a los actores. Esta propuesta empresarial quiere mejorar las condiciones laborales de estos últimos mediante la tecnología disponible y un know know digital. Así mismo, generar el primer banco consolidado de talentos del país y contribuir a la solidificación de un segmento cultural.

Caracterización de pacientes con neoplasias primarias del segmento hepatobiliopancreático

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Danilo Romaguera Barroso

2015-02-01

Full Text Available Se realizó un estudio observacional, descriptivo y longitudinal de 60 pacientes con cáncer primario del segmento hepatobiliopancreático, operados y egresados vivos del Servicio de Cirugía General del Hospital Provincial Docente Clinicoquirúrgico "Saturnino Lora Torres" de Santiago de Cuba, desde el 2005 hasta el 2011, con vistas a caracterizarles según variables seleccionadas. Entre las localizaciones más frecuentes figuraron: páncreas, hígado, vesícula y vías biliares extrahepáticas, en pacientes de la sexta década de la vida del sexo masculino; aunque el tumor de vesícula biliar prevaleció en las féminas. La estadificación clínica de la mayoría correspondió a las etapas más avanzadas, limitada al tratamiento quirúrgico paliativo. Los pacientes con factores de riesgo deben ser dispensarizados en las áreas de atención primaria de salud para que acudan al nivel secundario en etapas iniciales de la enfermedad, y puedan recibir el tratamiento quirúrgico con intención curativa, lo cual mejora su pronóstico y calidad de vida

Anterior ankle arthroscopy, distraction or dorsiflexion?

NARCIS (Netherlands)

de Leeuw, P.A.J.; Golanó, P.; Clavero, J.A.; van Dijk, C.N.

2010-01-01

Anterior ankle arthroscopy can basically be performed by two different methods; the dorsiflexion- or distraction method. The objective of this study was to determine the size of the anterior working area for both the dorsiflexion and distraction method. The anterior working area is anteriorly

Informações por Segmento: análise do nível de evidenciação das companhias listadas no novo mercado = Segment reporting: an analysis of the disclosure level of the companies listed on BM&F Bovespa’s new market

OpenAIRE

Camila Weschenfelder; Sady Mazzioni

2014-01-01

As normas internacionais de Contabilidade contribuíram para melhorar o nível de transparência das demonstrações financeiras, disponibilizando informações gerenciais, como as informações por segmento. A pesquisa objetivou verificar o nível de evidenciação do CPC 22 – Informações por segmento – das demonstrações contábeis intermediárias,analisando 127 companhias listadas no Novo Mercado da BM&F Bovespa. A verificação deu-se por meio da análise de conteúdo e posteriormente pelo modelo de regress...

Informações por Segmento: análise do nível de evidenciação das companhias listadas no novo mercado = Segment reporting: an analysis of the disclosure level of the companies listed on BM&F Bovespa’s new market

Directory of Open Access Journals (Sweden)

Camila Weschenfelder

2014-08-01

Full Text Available As normas internacionais de Contabilidade contribuíram para melhorar o nível de transparência das demonstrações financeiras, disponibilizando informações gerenciais, como as informações por segmento. A pesquisa objetivou verificar o nível de evidenciação do CPC 22 – Informações por segmento – das demonstrações contábeis intermediárias,analisando 127 companhias listadas no Novo Mercado da BM&F Bovespa. A verificação deu-se por meio da análise de conteúdo e posteriormente pelo modelo de regressão linear múltipla. Os resultados sinalizaram que companhias com emissão de ADR’s tendem a divulgar menos informações por segmento que as demais. Algumas companhias não citam o CPC 22 nas suas demonstrações contábeis e nenhuma evidenciou a Demonstração do Fluxo de Caixa por segmento.Poucas empresas investigadas citaram o grau de dependência dos principais clientes, o montante de investimentos contabilizados por equivalência patrimonial e a conciliação entre as informações por segmento e o balanço patrimonial. Companhias auditadas por Big Four apresentam menor nível de evidenciação do que as demais. Conclui-se que o nível de evidenciação de informações por segmento é baixo e distinto entre os setores. The international accounting standards have contributed to improve the financial statements transparency providing managing information, as the ones by segment. This research has aimed at checking the CPC 22 disclosure level – Segment reporting – from the intermediate financial statements of the 127 companies listed on BM&F Bovespa’s New Market. This checking has been performed by the Content Analysis and, further, by the Multiple Regression analysis Pattern. The results showed that the companies with ADR’s tend to disclosure less information about segment reporting than others. Some companies do not mention in their financial statements and none of them highlighted the Cash Flow Demonstration by

Tórax inestable, evolución sin osteosíntesis: presentación de un caso.

Directory of Open Access Journals (Sweden)

Elbert Oberto Reyes Graterol

2012-09-01

Full Text Available El trauma torácico cerrado suele ser el resultado de un impacto directo a alta velocidad o caídas siendo responsable de fracturas costales. Se define  tórax inestable como la fractura de tres o cuatro costillas en más de dos segmentos de su longitud, ocasionando un fenómeno paradójico en la caja  torácica durante la respiración, colapsándose en inspiración y expandiéndose en espiración. Los de localización anterior o lateral son los más graves,  dada su repercusión fisiopatológica. El diagnóstico se establece con el examen físico, radiografías y tomografías de tórax, así como también estudios  de fisiología respiratoria. El tratamiento se basa en la estabilización neumática interna mediante ventilación mecánica y osteosíntesis. Se presenta el  caso de paciente femenino de 18 años de edad quien ingresa al Hospital General del Sur por presentar trauma toraco-abdominal cerrado complicado,  con neumotórax derecho, hemoneumotórax izquierdo que ameritó colocación de drenaje torácico e intubación, lesión hepática grado IV de segmentos  II y III y lesión del ángulo esplénico del colon, ingresando a UCI donde permaneció durante doce días bajo ventilación mecánica asistida.  Se destaca la consolidación costal en ausencia de osteosíntesis o fijación con una evolución observable en estudios de imágenes de control periódico.

TÓRAX INESTABLE, EVOLUCIÓN SIN OSTEOSINTESIS: PRESENTACIÓN DE UN CASO

Directory of Open Access Journals (Sweden)

Elbert Oberto Reyes Graterol

2011-01-01

Full Text Available El trauma torácico cerrado suele ser el resultado de un impacto directo a alta velocidad o caídas siendo responsable de fracturas costales. Se define tórax inestable como la fractura de tres o cuatro costillas en más de dos segmentos de su longitud, ocasionando un fenómeno paradójico en la caja torácica durante la respiración, colapsándose en inspiración y expandiéndose en espiración. Los de localización anterior o lateral son los más graves, dada su repercusión fisiopatológica. El diagnóstico se establece con el examen físico, radiografías y tomografías de tórax, así como también estudios de fisiología respiratoria. El tratamiento se basa en la estabilización neumática interna mediante ventilación mecánica y osteosíntesis. Se presenta el caso de paciente femenino de 18 años de edad quien ingresa al Hospital General del Sur por presentar trauma toraco-abdominal cerrado complicado, con neumotórax derecho, hemoneumotórax izquierdo que ameritó colocación de drenaje torácico e intubación, lesión hepática grado IV de segmentos II y III y lesión del ángulo esplénico del colon, ingresando a UCI donde permaneció durante doce días bajo ventilación mecánica asistida. Se destaca la consolidación costal en ausencia de osteosíntesis o fijación con una evolución observable en estudios de imágenes de control periódico.

Tratamiento de la mordida cruzada anterior con plano inclinado anterior. Efecto sobre los arcos dentales

OpenAIRE

Carolina Rodríguez Manjarrés; Jesús Alberto Hernández Silva

2017-01-01

Objetivo: Evaluar los cambios dimensionales de los arcos dentales primarios tratados con plano inclinado anterior como método de corrección de la mordida cruzada anterior. Métodos: Se trataron 10 pacientes con edades entre 3 y 5 años afectados con mordida cruzada anterior completa, se colocó un plano inclinado anterior elaborado en acrílico, que estuvo en posición en promedio 8.5 semanas. Se obtuvieron modelos de estudio en 3 momentos T0: antes del tratamiento; T1: 6 meses después de iniciado...

E-Commerce no Brasil: Se o Segmento é Promissor, Por Que Empresas Atuantes Estão no Vermelho?

Directory of Open Access Journals (Sweden)

Adriana Serafim dos Santos

2015-04-01

Full Text Available A mudança de perfil dos novos consumidores tem exigido das organizações inovação em suas operações. Nesse contexto, uma nova modalidade de negócios tem modificado o cenário brasileiro, o e-commerce. Este segmento está em pleno crescimento, com projeções elevadas de faturamento (EBIT, 2013. No entanto, um paradoxo tem intrigado pesquisadores da área. Se o segmento é promissor, por que as empresas do ramo têm resultados negativos? Diante disso, o objetivo do estudo foi verificar o que revela a análise das demonstrações contábeis sobre o desempenho econômico-financeiro da B2W Digital (que atua no varejo on-line em comparação com outras empresas classificadas no mesmo setor na BM&FBovespa (atuantes no varejo tradicional. Na plataforma teórica foram discutidos os principais indicadores financeiros e econômicos e apresentado um histórico sobre o e-commerce no Brasil. Posteriormente foi realizada análise documental nas demonstrações contábeis das referidas empresas no período de 2007 a 2012. Foi constatado que as principais causas para o baixo desempenho da B2W Digital no período analisado foram: desequilíbrio na gestão dos prazos médios, ou seja, a organização paga seus fornecedores em prazos bem menores do que recebe de seus clientes, por isso a necessidade de financiar sua operação com recursos onerosos de curto prazo, principalmente empréstimos e antecipações de recebíveis, o que acarreta em despesas com taxas e juros; elevado grau de endividamento; baixa margem bruta, devido ao custo da mercadoria vendida que consome mais de 70% de sua receita líquida; e, finalmente, aumento das despesas operacionais, principalmente em distribuição.

Características clínicas y pronóstico a un año de pacientes con síndrome coronario agudo sin elevación del segmento ST y arterias coronarias sanas

Directory of Open Access Journals (Sweden)

Nilson López, MD

2011-11-01

Conclusiones: La probabilidad de rehospitalización por dolor torácico, necesidad de nueva coronariografía y muerte no difirió entre los pacientes con infarto sin elevación del segmento ST con o sin enfermedad coronaria obstructiva.

Laparoscopic graduated cardiomyotomy with anterior fundoplication as treatment for achalasia: experience of 48 cases

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A. Etchegaray-Dondé

2018-04-01

Full Text Available Introduction and aims: At the Upper Gastrointestinal Tract Clinic of the Hospital General de Mexico, achalasia treatment has been standarized through strictly graduated cardiomyotomy. This procedure guarantees a complete myotomy for the satisfactory resolution of dysphagia, a characteristic symptom of achalasia. To ensure the inclusion of the entire lower esophageal sphincter, an 8 cm Penrose drain is placed at the surgical site 6 cm above the gastroesophageal junction and 2 cm in a caudal direction, for accurate laparoscopic measuring. The aim of our study was to evaluate the results of this technique. Materials and methods: A descriptive, retrospective, longitudinal, and observational study was conducted on a cohort of patients diagnosed with achalasia at the Upper Gastrointestinal Tract Clinic of the Hospital General de México “Dr. Eduardo Liceaga”. Results: The study included 48 patients, 40 of whom had no prior surgical treatment and 8 that presented with recurrence. Forty-seven patients (97.9% underwent a laparoscopic procedure and conversion to open surgery was required in 2 of them (4.25% conversion rate. Postoperative progression was satisfactory in all cases, with mean oral diet commencement at 52 h and mean hospital stay of 5.7 days. No recurrence was registered during the mean follow-up period of 35.75 months and there were no deaths. Conclusions: Laparoscopic graduated (strictly measured cardiomyotomy with anterior fundoplication is a reproducible, efficacious, and safe option for the surgical treatment of achalasia. Resumen: Introducción y objetivos: En la Clínica de Tracto Digestivo Superior del Hospital General de México, el tratamiento de la acalasia se ha estandarizado mediante la realización de una cardiomiotomía estrictamente graduada que permite garantizar una miotomía completa para resolver de forma satisfactoria la disfagia característica de esta enfermedad. Un penrose de 8 cm, se coloca sobre el lecho

Seção áurea: um contexto para desenvolver a noção de incomensurabiblidade de segmentos de reta

OpenAIRE

Corbo, Olga

2005-01-01

O presente estudo foi realizado com o objetivo de contribuir para a formação inicial de professores de Matemática, propondo a utilização da seção áurea como contexto para explorar a noção de incomensurabilidade de segmentos de reta. Tomando como referencial teórico a noção de jogos de quadros , introduzida por Douady (1986) na Didática da Matemática e usando a metodologia de pesquisa denominada Engenharia Didática, desenvolvemos nosso trabalho com base na hipótese de que uma seqüência de ens...

Anestesia congênita de córnea associada à anestesia de ramo do trigêmio: relato de caso Congenital corneal anesthesia related to trigeminal anesthesia: case report

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Miguel José Calix Netto

2005-12-01

Full Text Available A anestesia corneana por ser uma condição rara, freqüentemente é confundida ou não diagnosticada durante o exame de rotina do segmento anterior. Relato de caso de um paciente de 18 anos encaminhado ao ambulatório de córnea e doenças externas com quadro clinico de síndrome de olho seco e com diagnóstico provável de síndrome de Sjögren. Era amblíope de olho direito devido à opacidade corneana no eixo visual secundária a trauma com unha na infância. Foi pesquisada sensibilidade corneana que era ausente em ambos os olhos; olho seco grave e com BUT (tempo de quebra do filme lacrimal menor que 4 segundos. Foi feito diagnóstico de anestesia corneana congênita associada a hipoestesia do nervo trigêmio pela avaliação neurológica da sensibilidade facial e movimentos bruscos do queixo que evidenciavam alterações sensoriais do nervo. O oftalmologista geral e principalmente o especialista em segmento anterior devem ter como rotina a pesquisa da sensibilidade corneana no exame do segmento anterior.Corneal anesthesia is a rare condition, therefore its diagnosis is frequently impaired or it is not noticed during the anterior segment examination. Case report of a 18-year-old patient referred to our Corneal and External Disease Department who complained of dry eye symptoms and with a suspicion of Sjögren's syndrome. She had amblyopia of the right eye, consequence of corneal leucoma over the visual axis secondary to a fingernail traumatism inflicted by herself in childhood. On the ophthalmologic examination corneal sensitivity was absent in both eyes. Severe dry eye and breakup time less than four seconds. Diagnosis of congenital corneal anesthesia was established, secondary to trigeminal anesthesia found on neurological evaluation of facial sensitivity. She also showed sudden movements of the chin which evidenced sensorial pathology of the trigeminal nerve. The general ophthalmologist and specially anterior segment specialists must

Mild toxic anterior segment syndrome mimicking delayed onset toxic anterior segment syndrome after cataract surgery

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Su-Na Lee

2014-01-01

Full Text Available Toxic anterior segment syndrome (TASS is an acute sterile postoperative anterior segment inflammation that may occur after anterior segment surgery. I report herein a case that developed mild TASS in one eye after bilateral uneventful cataract surgery, which was masked during early postoperative period under steroid eye drop and mimicking delayed onset TASS after switching to weaker steroid eye drop.

MRI appearances of the anterior fibulocalcaneus muscle: a rare anterior compartment muscle

Energy Technology Data Exchange (ETDEWEB)

Upadhyay, Bhavin [Basildon and Thurrock University Hospitals NHS Foundation Trust, Imaging Department, Essex (United Kingdom); Amiras, Dimitri [Imperial College Health Care NHS Trust, Imaging Department, London (United Kingdom)

2015-05-01

MRI of a 62-year-old female presenting with ankle pain demonstrated an accessory muscle within the anterior compartment of the lower leg. The muscle originated from the fibula and anterior crural septum. The tendon passed anterior to the lateral malleolus and inserted at the critical angle of Gissane on the calcaneus. This muscle was initially described in the anatomic literature by Lambert and Atsas in 2010. To our knowledge, this is the first time the MRI appearances of this muscle has been described in the radiological literature. Awareness of the fibulocalcaneal muscle is important as it may represent a cause of ankle pain. In addition, the tendon could potentially be harvested for use in reconstructive procedures. (orig.)

Anterior approach for knee arthrography

International Nuclear Information System (INIS)

Zurlo, J.V.; Towers, J.D.; Golla, S.

2001-01-01

Objective. To develop a new method of magnetic resonance arthrography (MRA) of the knee using an anterior approach analogous to the portals used for knee arthroscopy.Design. An anterior approach to the knee joint was devised mimicking anterior portals used for knee arthroscopy. Seven patients scheduled for routine knee MRA were placed in a decubitus position and under fluoroscopic guidance a needle was advanced from a position adjacent to the patellar tendon into the knee joint. After confirmation of the needle tip location, a dilute gadolinium solution was injected.Results and conclusion. All the arthrograms were technically successful. The anterior approach to knee MRA has greater technical ease than the traditional approach with little patient discomfort. (orig.)

Capsulorhexis contraction after cataract surgery: Comparison of sharp anterior edge and modified anterior edge acrylic intraocular lenses

DEFF Research Database (Denmark)

Corydon, C.; Lindholt, M.; Knudsen, E.B.

2007-01-01

eyes) were included in a prospective randomized study. All had phacoemulsification followed by implantation of an IOL with a modified anterior edge (38 eyes) or a sharp anterior edge (46 eyes). One day (baseline) and 3 months postoperatively, the area of the anterior capsule opening was measured using...... retroillumination photographs. RESULTS: There was a significant reduction in the area of the anterior capsule opening from 1 day to 3 months postoperatively in both groups (Psharp...

Método de eliminación de trihalometanos y/o contaminantes emergentes mediante plasma

OpenAIRE

Erra Serrabasa, Pilar; Jover Comas, Eric; Molina Mansilla, Ricardo; Bertrán Serra, Enric; Bayona Termens, Josep María; Reyes Contreras, Carolina

2009-01-01

Método de eliminación de trihalometanos y/o contaminantes emergentes mediante plasma. Se describe un método de eliminación de trihalometanos y contaminantes refractarios en medios acuosos mediante la aplicación directa de plasma para conseguir la degradación de los compuestos contaminantes presentes en el agua.

Anterior vitrectomy and partial capsulectomy via anterior approach to treat chronic postoperative endophthalmitis

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Mete Güler

2013-02-01

Full Text Available AIM:To describe the results of vitrectomy and partial capsulectomy via anterior approach surgical technique in treatment of chronic postoperative endophthalmitis (CPE.METHODS:Clinical records of 9 patients treated for CPE between 2006 and 2010 were reviewed retrospectively. All of these patients were treated with vitrectomy and partial capsulectomy via anterior approach.RESULTS:Six of 9 patients were male. The average patients’ age was (60±8.1 years. The average period between cataract extraction and onset of signs and symptoms was (3.6±1.3 weeks. The average presenting visual acuity was 0.3±0.1 and the average final post operative visual acuity was 0.7±0.2. The mean follow-up period was (28.1±8.9 weeks. In all patients, the inflammation subsided after surgery.CONCLUSION:Our results suggest that anterior vitrectomy and partial capsulectomy via anterior approach may be considered as potentially useful and relatively less invasive technique to treat CPE.

Callus formation in vitro and internodal stem apices in savory = Calogênese in vitro de segmentos apicais caulinares e internodais em segurelha (Satureja hortensis L.

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Marcio Carlos Navroski

2012-12-01

Full Text Available We sought to evaluate with this work different growth regulators on callus formation in shoot apical and internodal stem segments of Satureja hortensis. The explants were isolated from in vitro seedlings and cultured on MS nutrient medium supplemented with NAA (0 and 1 μM and BAP (0, 5, 10, 15 and 20 μM. The presence of auxin NAA gave higher marks to the calluses at 30 days of evaluation, these notes also increased with the addition of BAP. There were significant interactions between factors in evaluating NAA and BAP for 60 days, both in apical stem segments as in internodal stem segments. To stemapices percentage of friable callus tends to decrease with increasing concentration of BAP. As for compact calluses increased BAP leads to an increase in the percentage of this type of callus. The presence of NAA increased callus formation in both friable and compact calluses on. This trend was also observed in internodal stem segments. The callus formation was highly rhizogenic observed in the presence of NAA, hardly occurs in the absence of auxin. The use of BAP is recommended in case of regeneration of plants through micropropagation, if the goal is the production of metabolites, the use of BAP can be harmful by reducing the production of friable callus.= Buscou-se com este trabalho avaliar diferentes reguladores de crescimento sobre a calogênese em segmentos caulinares apicais e internodais de Satureja hortensis L.. Os explantes foram isolados de plântulas germinadas in vitro e cultivados em meio nutritivo MS acrescido de ANA (0 e 1 μM e de BAP (0; 5; 10; 15 e 20 μM. A presença da auxina ANA proporcionou notas mais altas para os calos aos 30 dias de avaliação, estas notas também aumentaram com o acréscimo da citocinina BAP. Houve interações significativas entre os fatores ANA e BAP na avaliação aos 60 dias, nos dois tipos de segmentos caulinares(apicais e internodais. Nos segmentos apicais caulinares a porcentagem de calos fri

[Anterior guidance in complete dentures].

Science.gov (United States)

Dubreuil, J; Trevelo, A

1990-01-01

Although the anterior guidance in complete dentures is not really a guide, the arrangement of the anterior maxillary and mandibular prosthetic teeth, defines a propulsive line called the virtual anterior guidance, a part from the cinematic criterias. The influence of this guide on cuspal movement is superior, in all mandibular points, to the influence of the condylar pathway. If this line is not respected, the practitioner may have to do excessive grindings during occlusal adjustments.

Immediate postoperative anterior knee stability: double- versus triple-bundle anterior cruciate ligament reconstructions.

Science.gov (United States)

Mae, Tatsuo; Shino, Konsei; Matsumoto, Norinao; Yoneda, Kenji; Yoshikawa, Hideki; Nakata, Ken

2013-02-01

The purpose of this study was to compare the triple-bundle (TB) anterior cruciate ligament (ACL) reconstruction with the double-bundle (DB) ACL reconstruction in immediate postoperative anterior knee stability. This study involved 133 patients who had undergone the anatomic ACL reconstruction with autogenous hamstring tendon unilaterally. Then 83 patients (mean age, 28.8 years) underwent the DB between November 2004 and December 2005, and 50 patients (mean age, 29.6 years) underwent the TB ACL reconstruction between January and December 2006. The 2 femoral tunnels were created in the ideal ACL attachment area, whereas 2 tibial tunnels for the DB and 3 tunnels for the TB were created in the ACL footprint. The 2 doubled tendon grafts were fixed with EndoButton-CL (Smith & Nephew Endoscopy, Andover, MA) on the femur. The grafts were fixed to the tibia using a Double Spike Plate and a screw under the total initial tension of 20 N at 20° of flexion, after meticulous in situ pretensioning using a tensioning boot. Then immediate postoperative anterior knee laxity in response to 89 N of anterior load was measured by one experienced examiner (T.M.) with the KT-2000 Knee Arthrometer (MEDmedtric, San Diego, CA) under general anesthesia at 30° of knee flexion with muscle relaxants. The measured anterior laxity was 3.4 ± 1.2 mm in the DB and 2.5 ± 0.7 mm in the TB ACL reconstruction, a statistically significant difference. The side-to-side difference of the laxity was -3.2 ± 1.6 mm in the DB and -4.2 ± 2.0 mm in the TB, again a significant difference. TB ACL reconstruction resulted in better immediate postoperative anterior knee stability than DB ACL reconstruction under 89 N of anterior tibial load (P = .031). Level III, therapeutic retrospective comparative study. Copyright © 2013 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.

Modelado de un amortiguador magneto-reológico mediante EcosimPro

OpenAIRE

Rodríguez Cadenas, Rubén

2012-01-01

El objetivo de este proyecto es la creación de una librería en la herramienta de modelado y simulación EcosimPro enfocada a amortiguadores magneto‐reológicos. El modelado y simulación mediante cualquier herramienta informática permite la obtención de datos y el desarrollo de componentes con un coste inferior al que habría que invertir mediante una experimentación real. Además, permite llevar el componente hasta el límite sin el riesgo de romperlo o dejarlo inutilizable. Por tanto, se puede de...

38 CFR 3.379 - Anterior poliomyelitis.

Science.gov (United States)

2010-07-01

... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false Anterior poliomyelitis. 3... Specific Diseases § 3.379 Anterior poliomyelitis. If the first manifestations of acute anterior poliomyelitis present themselves in a veteran within 35 days of termination of active military service, it is...

The Efficacy of Bulbar Urethral Mobilization for Anastomotic Anterior Urethroplasty in a Case With Recurrent Anterior Urethral Stricture

OpenAIRE

Fukui, Shinji; Aoki, Katsuya; Kaneko, Yoshiteru; Samma, Shoji; Fujimoto, Kiyohide

2014-01-01

A 2-month-old boy was diagnosed with febrile urinary tract infection. Voiding cystourethrography showed bulbar and anterior urethral strictures, and endoscopic internal urethrotomy was performed. He developed febrile urinary tract infection again and revealed the recurrence of the anterior urethral stricture. Consequently, endoscopic internal urethrotomy was performed 4 times. Because the anterior urethral stricture had not improved, he was referred to us. Anterior urethroplasty was performed...

Trajetórias tecnológicas no segmento offshore: ambiente e oportunidades Technological trajectories in the offshore segment: enviroment and opportunities

Directory of Open Access Journals (Sweden)

José Benedito Ortiz Neto

2008-08-01

Full Text Available Este artigo apresenta as diferentes trajetórias tecnológicas do segmento offshore na indústria petrolífera mundial considerando os seus principais aspectos e marcos constituintes. Mais especificamente, serão analisadas as trajetórias diferentes nas duas primeiras grandes províncias de petróleo do segmento offshore: o Golfo do México (EUA e o Mar do Norte (Europa. Junto com a Bacia de Campos (Brasil, são as mais produtivas e ricas do planeta e onde as três trajetórias tecnológicas foram desenvolvidas. Esse levantamento histórico é importante porque resgata os elementos que dão as bases do conhecimento tecnológico que permitiu à Petrobras, de forma inédita, iniciar as suas atividades offshore nas décadas de 1960-1970. Será visto aqui que a exploração offshore significou o surgimento de um novo paradigma tecnológico sustentado por três trajetórias.This article presents different technological trajectories concerning the offshore exploration segment in the world petroleum industry, considering their main aspects and components. More specifically, different trajectories will be analyzed in the first two largest crude oil territories: Gulf of Mexico (USA and Sea North (Europe. These, along with Bacia de Campos in Brazil, are the most productive and the richest regions in the planet and, therefore, where the three technological trajectories have been developed. This historic survey is important because it reveals the elements that provide the basis for technological knowledge, which allowed Petrobras to start its offshore activities in the 60s and 70s, via an original technology. The offshore exploration meant the emergence of a new technological paradigm supported by three trajectories.

Long anterior zonules and pigment dispersion.

Science.gov (United States)

Moroi, Sayoko E; Lark, Kurt K; Sieving, Paul A; Nouri-Mahdavi, Kouros; Schlötzer-Schrehardt, Ursula; Katz, Gregory J; Ritch, Robert

2003-12-01

To describe pigment dispersion associated with long anterior zonules. Multicenter observational case series. Fifteen patients, seven of whom were treated for glaucoma or ocular hypertension, were identified with long anterior zonules and pigment dispersion. Transmission electron microscopy was performed on one anterior capsule specimen. All patients had anterior zonules that inserted centrally on the lens capsule. Signs of pigment dispersion included corneal endothelial pigmentation, loss of the pupillary ruff, and variable trabecular meshwork pigmentation. Ultrasound biomicroscopy verified the lack of posterior iris insertion and concavity. There was no exfoliation material. Transmission electron microscopy showed zonular lamellae with adherent pigment granules, and no exfoliation material. Long anterior zonules inserted onto the central lens capsule may cause mechanical disruption of the pigment epithelium at the pupillary ruff and central iris leading to pigment dispersion.

Fenestration of the anterior cerebral artery

International Nuclear Information System (INIS)

Ito, J.; Washiyama, K.; Hong Kim, C.; Ibuchi, Y.

1981-01-01

Three cases of angiographically demonstrated fenestration of the anterior cerebral artery are reported. Fenestration occurred at the medial half of the horizontal segment of the anterior cerebral artery in all cases. Its embryology and clinical significance are briefly discussed, and the anatomical and radiological literature on fenestration of the anterior cerebral artery is reviewed. (orig.)

The Efficacy of Bulbar Urethral Mobilization for Anastomotic Anterior Urethroplasty in a Case With Recurrent Anterior Urethral Stricture.

Science.gov (United States)

Fukui, Shinji; Aoki, Katsuya; Kaneko, Yoshiteru; Samma, Shoji; Fujimoto, Kiyohide

2014-05-01

A 2-month-old boy was diagnosed with febrile urinary tract infection. Voiding cystourethrography showed bulbar and anterior urethral strictures, and endoscopic internal urethrotomy was performed. He developed febrile urinary tract infection again and revealed the recurrence of the anterior urethral stricture. Consequently, endoscopic internal urethrotomy was performed 4 times. Because the anterior urethral stricture had not improved, he was referred to us. Anterior urethroplasty was performed when he was 5 years. After excision of the scarred portions of the urethra, the defect of the urethra was 20 mm. Transperineal bulbar urethral mobilization was performed, and a single-stage end-to-end anterior urethroplasty without tension could be performed simultaneously.

DESEMPENHO IMPORTADOR DO SEGMENTO DE MODA PRAIA BRASILEIRO: UMA PROPOSTA DE ANÁLISE

Directory of Open Access Journals (Sweden)

Ana Elizabeth Moiseichyk

2012-07-01

Full Text Available O vasto litoral brasileiro aliado a uma cultura de seu uso como meio de lazer propiciou ao país o surgimento de inúmeras empresas especializadas na produção e comercialização da moda praia. No entanto, existe um grupo de clientes que buscam produtos importados, mesmo neste segmento. Neste sentido, este estudo teve como objetivo caracterizar a importação brasileira de moda praia feminina, investigando qual é sua importância e participação no contexto internacional, pelos desafios propostos pela competição entre os diversos players e a necessidade de conhecimentos sobre inovação para se manter no mercado importador. Apoiado na análise de conteúdo da documentação temática com dados quantitativos e oficiais coletados no portal Aliceweb do Ministério do Desenvolvimento, Indústria e Comércio Exterior do Brasil obteve-se como resultado final do estudo a estruturação de uma tabela com os 10 principais países fornecedores e o comportamento de compra, onde, em 2011, o principal expoente foi a China com 90,9% da quantidade importada com 959.324 peças compradas, valor médio US$ 2,17 FOB, desempenho de compra em crescimento e tendência de preço em queda.

Herniation of the anterior lens capsule

Directory of Open Access Journals (Sweden)

Pereira Nolette

2007-01-01

Full Text Available Herniation of the anterior lens capsule is a rare abnormality in which the capsule bulges forward in the pupillary area. This herniation can be mistaken for an anterior lenticonus where both the capsule and the cortex bulge forward. The exact pathology behind this finding is still unclear. We report the clinical, ultrasound biomicroscopy (UBM and histopathological findings of a case of herniation of the anterior lens capsule. UBM helped to differentiate this entity from anterior lenticonus. Light microscopy revealed capsular splitting suggestive of capsular delamination and collection of fluid (aqueous in the area of herniation giving it a characteristic appearance.

Multidisciplinary management of anterior diastemata

DEFF Research Database (Denmark)

Furuse, Adilson Yoshio; Herkrath, Fernando José; Franco, Eduardo Jacomino

2007-01-01

Anterior diastemata may compromise the harmony of a patient's smile. Consideration of etiologic factors, previous gingival conditioning, and individual treatment planning are essential in the proper management of anterior diastemata. An integrated orthodontic-restorative approach may enhance the ...

The Efficacy of Bulbar Urethral Mobilization for Anastomotic Anterior Urethroplasty in a Case With Recurrent Anterior Urethral Stricture

Directory of Open Access Journals (Sweden)

Shinji Fukui

2014-05-01

Full Text Available A 2-month-old boy was diagnosed with febrile urinary tract infection. Voiding cystourethrography showed bulbar and anterior urethral strictures, and endoscopic internal urethrotomy was performed. He developed febrile urinary tract infection again and revealed the recurrence of the anterior urethral stricture. Consequently, endoscopic internal urethrotomy was performed 4 times. Because the anterior urethral stricture had not improved, he was referred to us. Anterior urethroplasty was performed when he was 5 years. After excision of the scarred portions of the urethra, the defect of the urethra was 20 mm. Transperineal bulbar urethral mobilization was performed, and a single-stage end-to-end anterior urethroplasty without tension could be performed simultaneously.

Sensado de variables mediante terminal Android

OpenAIRE

Altaba Rosas, Mar

2017-01-01

El presente documento describe los procesos de diseño y desarrollo de un sistema que, a través de una aplicación móvil, sirve como dispositivo para el registro de la actividad cardíaca del paciente, mediante la obtención del electrocardiograma (ECG), y que permite detectar irregularidades para posteriormente, en caso que fuera necesario, poder enviar los datos adquiridos al profesional sanitario pertinente para que éste los analice. El sistema tiene dos componentes diferenciados, por un lado,...

Análise de rentabilidade dos segmentos de mercado de empresa distribuidora de mercadorias

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Rodney Wernke

2004-08-01

Full Text Available O artigo apresenta possíveis aplicações do conceito de margem de contribuição para avaliação de desempenho de segmentos comerciais, voltando-se mais especificamente para empresas que operam no ramo de distribuição de mercadorias. São comentadas e exemplificadas situações em que a margem de contribuição pode servir como ferramenta de apoio aos gestores da área de vendas para averiguar a rentabilidade de produtos, linhas de mercadorias, territórios de venda, canais de distribuição, clientes e vendedores. Por último enfatiza-se o aspecto da projeção de resultados operacionais com base na contribuição total e seus benefícios.The article presents possible applications of the contribution margin concept for the performance evaluation of commercial segments, more specifically oriented towards goods distribution companies. We comment on and give examples of situations in which the contribution margin can serve as a tool to support managers from the sales area to verify the profitability of products, product lines, sales regions, distribution channels, clients and salespersons. Finally, we emphasize the aspect of operational result projection on the basis of the total contribution and its benefits.

Resultados del tratamiento quirúrgico de los aneurismas del complejo cerebral anterior-arteria comunicante anterior

Directory of Open Access Journals (Sweden)

Armando Alemán Rivera

2001-06-01

Full Text Available Se realiza un estudio de 30 pacientes con aneurismas localizados en el complejo de la arteria cerebral anterior-arteria comunicante anterior (ACoA, operados en el Servicio de Neurocirugía del Hospital Universitario "Arnaldo Milián Castro", durante un período de 7 años. Se analizan variables tales como edad, sexo, estado neurológico preoperatorio, momento quirúrgico, complicaciones y estado al egreso. La mortalidad general fue del 10 %The authors carried out a study in 30 patients with aneurysms located in the anterior communicating artery-anterior cerebral complex (ACA-ACC, that were operated on at the Neurosurgery Service of "Arnaldo Milián Castro" Teaching Hospital, during a period of 7 years. Variables such as age, sex, preoperative neurologic state, surgical moment, complications and status on discharge were analyzed. General mortality was 10 %

Combination nivolumab- and cabiralizumab-associated acute bilateral anterior and posterior scleritis and anterior uveitis

Directory of Open Access Journals (Sweden)

John A. Gonzales

2018-06-01

Full Text Available Purpose: To report on a case of uveitis and scleritis resulting as an immune-mediated side effect of cancer immunotherapy with nivolumab and cabiralizumab. Observations: Bilateral anterior nongranulomatous anterior uveitis and bilateral diffuse anterior and posterior scleritis occurred following the use of combination cancer immunotherapy. The uveitis and scleritis resolved following temporary discontinuation of nivolumab and cabiralizumab as well as systemic prednisone. Conclusions and importance: Ophthalmologists should be aware of the possibility of acute ocular inflammation developing with cancer immunotherapy. Systemic corticosteroids play a first-line role in managing such immune-mediated side effects. Keywords: Uveitis, Scleritis, Cancer immunotherapy, Side effects, Nivolumab, Cabiralizumab

Cardiomiotomía graduada con funduplicatura anterior laparoscópica en acalasia, experiencia de 48 casos

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A. Etchegaray-Dondé

2018-04-01

Full Text Available Resumen: Introducción y objetivos: En la Clínica de Tracto Digestivo Superior del Hospital General de México, el tratamiento de la acalasia se ha estandarizado mediante la realización de una cardiomiotomía estrictamente graduada que permite garantizar una miotomía completa para resolver de forma satisfactoria la disfagia característica de esta enfermedad. Un penrose de 8 cm, se coloca sobre el lecho quirúrgico, para garantizar la inclusión de todo el EEI, 6 cm por arriba de la UGE y 2 cm en sentido caudal, para asegurar la medición laparoscópica. El objetivo del estudio fue evaluar los resultados obtenidos con esta técnica. Material y métodos: Estudio descriptivo, retrospectivo, longitudinal, observacional, en una cohorte de pacientes con diagnóstico de acalasia, en la Clínica de Tracto Digestivo Superior, del Hospital General de México «Dr. Eduardo Liceaga». Resultados: Se incluyeron 48 pacientes; 40 sin tratamiento quirúrgico previo y 8 con recurrencia. En 47 casos el abordaje fue laparoscópico (97.9%; se requirió conversión a procedimiento abierto en 2 casos (tasa conversión 4.25%. La evolución postoperatoria fue satisfactoria en todos los casos, con inicio de la vía oral a las 52 h en promedio y una estancia intrahospitalaria promedio de 5.7 días. Durante el seguimiento de 35.75 meses en promedio no se han registrado recurrencias. No se presentó mortalidad. Conclusiones: La cardiomiotomía graduada (estrictamente medida con funduplicatura anterior mediante abordaje laparoscópico es una opción reproducible, eficaz y segura para el tratamiento quirúrgico de la acalasia. Abstract: Introduction and aims: At the Upper Gastrointestinal Tract Clinic of the Hospital General de Mexico, achalasia treatment has been standarized through strictly graduated cardiomyotomy. This procedure guarantees a complete myotomy for the satisfactory resolution of dysphagia, a characteristic symptom of achalasia. To ensure the

Anterior spinal cord syndrome of unknown etiology

OpenAIRE

Klakeel, Merrine; Thompson, Justin; Srinivasan, Rajashree; McDonald, Frank

2015-01-01

A spinal cord injury encompasses a physical insult to the spinal cord. In the case of anterior spinal cord syndrome, the insult is a vascular lesion at the anterior spinal artery. We present the cases of two 13-year-old boys with anterior spinal cord syndrome, along with a review of the anatomy and vasculature of the spinal cord and an explanation of how a lesion in the cord corresponds to anterior spinal cord syndrome.

Caracterización antigénica y molecular de los virus influenza A (H3N2) circulantes en Cuba y su relación con las cepas vacunales (1995-98)

OpenAIRE

Oropesa-Fernández, Suset; Goyenechea-Hernández, Angel; Savón-Valdés, Clara; Acosta-Herrera, Belsy; Piñón-Ramos, Alexander; Gonzalez-Muñoz, Grehete; Valdés-Ramírez, Odalys; Arencibia-García, Amely; Muné-Jimenez, Mayra; Espinosa-Hernández, Bárbara; González-Báez, Guelsys

2015-01-01

Los cambios antigénicos continuos que ocurren en las glicoproteínas de envoltura (hemaglutinina y neuraminidasa) de los virus influenza, se deben a las mutaciones puntuales y a las promovidas por la selección positiva del sistema inmune, que dan origen a las epidemias anuales y reordenamientos de segmentos genómicos, causa de las temidas pandemias. Los intentos para controlar la influenza mediante la vacunación tienen hasta ahora un éxito limitado y son obstaculizados por estos cambios. En Cu...

Resistencia de unión del sistema de postes REBILDA® con la dentina intrarradicular

OpenAIRE

Ross, Daphne; Filloy Esna, Carlos E.; Ramírez-Barrantes, Juan Carlos

2017-01-01

ResumenActualmente existe controversia en la literatura acerca de la efectividad clínica y adhesiva con respecto a los sistemas adhesivos de refuerzo radicular. Así, el objetivo de este estudio fue evaluar la resistencia de unión mediante la prueba de Push-Out entre el sistema de postes Rebilda® y la dentina intraradicular. Para esto, se utilizaron 28 dientes unirradiculares, que fueron cortados y padronizados en 16 mm. Los segmentos radiculares fueron sometidos a confección de tratamiento en...

Reconciliando modularidad y eficiencia mediante atajos

OpenAIRE

Marco Gómez, Jordi; Franch Gutiérrez, Javier

1997-01-01

Se presenta en este artículo una propuesta para el desarrollo de programas eficientes en el marco de la programación con tipos abstractos de datos (TAD), con el objetivo de respetar la estructura modular de los programas propia de este ámbito. La propuesta se centra en el concepto de atajo como camino eficiente de acceso a los datos, alternativo al acceso mediante las operaciones propias del TAD, y se desarrolla sobre un TAD concreto, el almacén de elementos. La definición de los atajos es al...

Percepeções e anseios dos atores envolvidos no segmento de turismo rural: um estudo de caso no município de Foz do Iguaçu/PR

OpenAIRE

Sodré, Samantha Trentin

2015-01-01

Trabalho de Conclusão de Curso apresentado ao Instituto Latino-Americano de Economia, Sociedade e Política da Universidade Federal da Integração Latino-Americana, como requisito parcial à obtenção do título de Bacharel em Desenvolvimento Rural e Segurança Alimentar. Orientadora: Prof. Dra. Ana Alice Aguiar Eleuterio O segmento do turismo rural é desenvolvido em áreas rurais produtivas, nas quais o turista tem a possibilidade de participa...

Uso de fijador externo en la inestabilidad de la pared torácica anterior (volet esternal: Presentación de un caso Use of the external fixative in the instability of the anterior thoraxic wall (sternal volet: A case report

Directory of Open Access Journals (Sweden)

Orestes N Mederos Curbelo

2005-03-01

Full Text Available Se presenta un paciente con inestabilidad de la pared torácica anterior y esternón tratado previamente con un dispositivo creado por los autores en 1995 para el volet costal. Las costillas artificiales externas del dispositivo, diseñado para el cerclaje subperióstico, actúan como elemento de fijación y han conseguido resultados satisfactorios. Se presenta un paciente, que producto de un accidente automovilístico, sufre lesiones en cráneo, tórax, abdomen y extremidades, entre las que resaltan contusión cerebral, lesión hepática, fractura de fémur e inestabilidad de la pared torácica anterior. Esta última requirió de prioridad extrema, pues habría llevado rápidamente al paciente a la insuficiencia respiratoria de no ser solucionado el problema. Se realizó la estabilización externa mediante un equipo que se utiliza en nuestro hospital, reutilizable y aplicable en cualquier inestabilidad torácica independientemente de la localización de esta. El fijador se confecciona con láminas de duraluminio maleables que permiten su adaptabilidad e introduce una forma de tratamiento en las lesiones torácicas bilaterales con inestabilidad esternal, situación compleja en la que puede resultar un instrumento valioso de tratamientoA patient with instability of the anterior thoracic wall and sternum previously treated with a device created by the authors in 1995 for the costal volet, is presented. The artificial external ribs of the device designed for subperiosteous cerclage act as a fixation element with satisfactory results. The case of a patient that due to a car accident suffers from lesions in the cranium, thorax, abdomen and limbs, among which cerebral contusion, liver lesion, femur fracture and instability of the anterior thoracic wall stand out, is reported. Maximum priority was given to the instability of the anterior thoracic wall, since it could have rapidly led to respiratory failure if the problem would have not been solved. The

MRI of tibialis anterior tendon rupture

International Nuclear Information System (INIS)

Gallo, Robert A.; DeMeo, Patrick J.; Kolman, Brett H.; Daffner, Richard H.; Sciulli, Robert L.; Roberts, Catherine C.

2004-01-01

Ruptures of the tibialis anterior tendon are rare. We present the clinical histories and MRI findings of three recent male patients with tibialis anterior tendon rupture aged 58-67 years, all of whom presented with pain over the dorsum of the ankle. Two of the three patients presented with complete rupture showing discontinuity of the tendon, thickening of the retracted portion of the tendon, and excess fluid in the tendon sheath. One patient demonstrated a partial tear showing an attenuated tendon with increased surrounding fluid. Although rupture of the tibialis anterior tendon is a rarely reported entity, MRI is a useful modality in the definitive detection and characterization of tibialis anterior tendon ruptures. (orig.)

Humeral avulsion of the anterior shoulder stabilizing structures after anterior shoulder dislocation: demonstration by MRI and MR arthrography

International Nuclear Information System (INIS)

Tirman, P.F.J.; Steinbach, L.S.; Feller, J.F.; Stauffer, A.E.

1996-01-01

Objective. To demonstrate the MRI findings of an anterior shoulder capsular avulsion from the humerus, with or without subscapularis rupture, after anterior dislocation or severe abduction external rotation injury. Design and patients. We retrospectively reviewed the MRI and MR arthrographic examinations of seven patients who were identified at surgery with avulsion of the anterior shoulder stabilizers from the humerus. MRI was correlated with clinical history and surgical results. Results. MRI findings included: inhomogeneity or frank disruption of the anterior capsule at the humeral insertion (all), fluid intensity anterior to the shoulder (six patients), tear of the subscapularis tendon (six patients), dislocation of the biceps tendon (four patients), and a Hill-Sachs deformity (four patients). MR arthrography additionally found extravasation of contrast through the capsular defect (two patients). Conclusions. Our findings suggest that MRI is helpful for diagnosing humeral avulsion of the anterior glenohumeral capsule, especially when a tear of the subscapularis tendon insertion is present. MR arthrography may be of benefit for diagnosing capsular avulsion without associated subscapularis tendon abnormality. (orig.). With 4 figs

Imaging findings of anterior hip dislocations

Energy Technology Data Exchange (ETDEWEB)

Pfeifer, Kyle [Mallinckrodt Institute of Radiology, Department of Radiology, St. Louis, MO (United States); Leslie, Michael [Yale School of Medicine, Department of Orthopedics and Rehabilitation, New Haven, CT (United States); Menn, Kirsten; Haims, Andrew [Yale University School of Medicine, Department of Radiology and Biomedical Imaging, New Haven, CT (United States)

2017-06-15

Anterior hip dislocations are rare orthopedic emergencies resulting from high-energy trauma and have unique imaging characteristics on radiography, computed tomography (CT), and magnetic resonance imaging (MRI). Imaging findings on CT and MRI allow for the prompt recognition and classification of anterior hip dislocations, which guides patient management and reduces complications. The purpose of this article is to review imaging findings of anterior hip dislocations, specifically focusing on CT and MRI. (orig.)

A NOVEL ANOMALY OF THE ANTERIOR DIGASTRIC MUSCLE. UNA ANOMALÍA NUEVA DEL MÚSCULO DIGÁSTRICO ANTERIOR

Directory of Open Access Journals (Sweden)

Timothy W Hegeman

2016-03-01

Full Text Available Documentamos una anomalía del músculo digástrico anterior en un cadáver femenino de 85 años de edad. La anomalía consiste en cuatro vientres adicionales que salen entre los dos típicos digástricos anterior. Analizamos el significado embriológico y clínico de esta variante. El músculo digástrico es derivado de dos arcos branquiales o arcos faríngeos. El primer arco branquial forma el vientre anterior y el segundo forma el vientre posterior. Actuando juntos, los vientres ayudan a impulsar hacia abajo la mandíbula y a estabilizar el hioides. Varias anormalidades en el vientre anterior del digástrico han sido previamente descriptas en la literatura, pero ninguna ha replicado la formación precisa descripta aquí.  We document a novel anomaly of the anterior digastrics of an 85 year old female cadaver, consisting of four additional muscle bellies existing between the two typical anterior digastrics and go on to explain the embryologic and clinical significance of the variant. The digastric muscle is derived from two pharyngeal arches, the first pharyngeal arch forming the anterior belly and the second forming the posterior belly. Acting together, both bellies help to depress the mandible and stabilize the hyoid. Several abnormalities in the anterior belly of the digastric muscle have previously been described in the literature, but none have replicated the precise formation described here.

Toxicidade ocular causada pelo tamoxifeno: relato de caso Ocular toxicity caused by tamoxifen: case report

Directory of Open Access Journals (Sweden)

Eliane Terumi Inada

2005-08-01

Full Text Available O objetivo desse trabalho é relatar um caso de toxicidade ocular pelo tamoxifeno. Para isso, aferiu-se a melhor acuidade visual corrigida de ambos os olhos em tabela de Snellen. Foram realizados biomicroscopia do segmento anterior, refração, oftalmoscopia, angiofluoresceinografia e retinografia numa paciente de 63 anos, sexo feminino, cor branca, em uso de tamoxifeno 20 mg/dia há 4 anos, com acuidade visual corrigida de 20/70 e 20/40. A biomicroscopia do segmento anterior apresentava ceratopatia verticilata e catarata nuclear e cortical posterior de 1+/4 em ambos os olhos. À oftalmoscopia, foi verificado alteração do brilho macular de ambos os olhos. E a angiofluoresceinografia mostrou hiperfluorescência na área macular em fase precoce (defeito em janela. Relata-se um caso de ceratopatia e maculopatia causadas pelo tamoxifeno.To report tamoxifen ocular toxicity. The best visual acuity was measured in both eyes with Snellen chart, slit-lamp examination of anterior segment, refraction, dilated fundus examination, fluorescein angiography and retinography in a 63-year-old patient, female, white, using tamoxifen 20 mg/day for 4 years, with 20/70 and 20/40 corrected visual acuity. The anterior segment examination showed corneal linear subepithelial opacity inferior to the visual axis and nuclear and posterior cortical cataract (1+/4 in both eyes. Fundus examination showed alteration of macular color in both eyes. Fluorescein angiography presented hyperfluorescence in the macular area at an early phase (window defect. Report of keratopathy and maculopathy caused by tamoxifen.

An anterior signaling center patterns and sizes the anterior neuroectoderm of the sea urchin embryo.

Science.gov (United States)

Range, Ryan C; Wei, Zheng

2016-05-01

Anterior signaling centers help specify and pattern the early anterior neuroectoderm (ANE) in many deuterostomes. In sea urchin the ANE is restricted to the anterior of the late blastula stage embryo, where it forms a simple neural territory comprising several types of neurons as well as the apical tuft. Here, we show that during early development, the sea urchin ANE territory separates into inner and outer regulatory domains that express the cardinal ANE transcriptional regulators FoxQ2 and Six3, respectively. FoxQ2 drives this patterning process, which is required to eliminate six3 expression from the inner domain and activate the expression of Dkk3 and sFRP1/5, two secreted Wnt modulators. Dkk3 and low expression levels of sFRP1/5 act additively to potentiate the Wnt/JNK signaling pathway governing the positioning of the ANE territory around the anterior pole, whereas high expression levels of sFRP1/5 antagonize Wnt/JNK signaling. sFRP1/5 and Dkk3 levels are rigidly maintained via autorepressive and cross-repressive interactions with Wnt signaling components and additional ANE transcription factors. Together, these data support a model in which FoxQ2 initiates an anterior patterning center that implements correct size and positions of ANE structures. Comparisons of functional and expression studies in sea urchin, hemichordate and chordate embryos reveal striking similarities among deuterostome ANE regulatory networks and the molecular mechanism that positions and defines ANE borders. These data strongly support the idea that the sea urchin embryo uses an ancient anterior patterning system that was present in the common ambulacrarian/chordate ancestor. © 2016. Published by The Company of Biologists Ltd.

Programación por metas Energía alternativa mediante biomasa.

Directory of Open Access Journals (Sweden)

Guerrero Casas, Flor María

2003-01-01

Full Text Available En este trabajo se presenta un modelo multicriterio de localización de centrales de generación de energía eléctrica mediante biomasa. Los objetivos considerados son: (1 minimizar el coste total de la operación, (2 maximizar la producción de electricidad obtenida, (3 maximizar la distancia entre plantas, (4 maximizar la aceptación social y (5 establecer las plantas o ampliaciones en aquellos lugares donde exista una mayor predisposición por parte de las administraciones locales. Finalmente, se concluye con una aplicación práctica mediante programación por metas ponderadas para la región andaluza, considerando los residuos procedentes del olivar como fuente de energía.

Repressão e violência de Estado contra os segmentos populares durante os governos militares. Rivail Carvalho Rolim

Directory of Open Access Journals (Sweden)

Rivail Carvalho Rolim

2015-11-01

Full Text Available Inúmeras pesquisas analisaram variados aspectos acerca do exercício do poder durante o regime militar, destacando inclusive a repressão e a violência levada a cabo pelas forças repressivas contra os grupos políticos que se opuseram a esse regime. Contudo, depois de anos de pesquisas novos olhares começam a ser lançados sobre a ditadura no Brasil. Como havia uma concepção bastante ampla relativa às tensões e aos antagonismos existentes no país e com os segmentos sociais que poderiam provocá-las, este trabalho tem como objetivo analisar a violência do Estado contra as classes populares, tendo em vista que foram consideradas como portadoras de um potencial desagregador e perigoso e despreparadas para viver em uma sociedade moderna, industrializada e de vida marcadamente urbana.

Atraumatic Anterior Dislocation of the Hip Joint

Directory of Open Access Journals (Sweden)

Tadahiko Ohtsuru

2015-01-01

Full Text Available Dislocation of the hip joint in adults is usually caused by high-energy trauma such as road traffic accidents or falls from heights. Posterior dislocation is observed in most cases. However, atraumatic anterior dislocation of the hip joint is extremely rare. We present a case of atraumatic anterior dislocation of the hip joint that was induced by an activity of daily living. The possible causes of this dislocation were anterior capsule insufficiency due to developmental dysplasia of the hip, posterior pelvic tilt following thoracolumbar kyphosis due to vertebral fracture, and acetabular anterior coverage changes by postural factor. Acetabular anterior coverage changes in the sagittal plane were measured using a tomosynthesis imaging system. This system was useful for elucidation of the dislocation mechanism in the present case.

Do patients prefer mesh or anterior colporrhaphy for primary correction of anterior vaginal wall prolapse: a labelled discrete choice experiment

NARCIS (Netherlands)

Notten, K. J. B.; Essers, B. A.; Weemhoff, M.; Rutten, A. G. H.; Donners, J. J. A. E.; van Gestel, I.; Kruitwagen, R. F. M. P.; Roovers, J. P. W. R.; Dirksen, C. D.

2015-01-01

We investigated patients' preferences for anterior colporrhaphy or mesh surgery as surgical correction of anterior vaginal wall prolapse. Labelled discrete choice experiment. Three Dutch teaching hospitals. Women with anterior vaginal wall prolapse Pelvic Organ Prolapse Quantification stage 2 or

Evaluación de la exposición al riesgo por vibraciones en el segmento mano brazo en compañías del sector metalmecánico

Directory of Open Access Journals (Sweden)

Giovanni de Jesús Arias-Castro

Full Text Available El objetivo del estudio consistió en la medición y evaluación de las aceleraciones originadas por herramientas vibrátiles tales como: pulidoras, amoladoras, taladros, entre otras, y su comparación con los límites de exposición permisibles registrados en la norma ISO 5349 de 2002 para el segmento corporal mano brazo. El estudio se desarrolló en cuatro (4 empresas del sector metalmecánico de la Ciudad de Cali, que inicialmente obligó a realizar una visita preliminar con el fin de seleccionar los procesos y herramientas e identificar las personas expuestas. Desde el punto de vista físico y fisiológico, los componentes estudiados fueron: la aceleración, velocidad y amplitud que son los parámetros asociados a vibraciones, además de la dirección en términos vectoriales, según la postura del segmento corporal involucrado y el grado de compromiso de los sistemas biomecánicos y fisiológicos del ser humano. A través del estudio se pudo evidenciar que las evaluaciones realizadas a 15 tipos de herramientas no sobrepasaron los límites permisibles de exposición establecidos en la Conferencia Americana de Higienistas Industriales Gubernamentales de los Estados Unidos ACGIH 2014, que corresponde a 2. 8 m/s². En la Empresa A, se pudo establecer que el nivel de aceleración más elevado lo presentó la Pulidora Dewalt con un valor de 0. 796571 m/s², para la Empresa B, en el caso del mismo equipo presentó una aceleración de 0. 6653 m/s², en el caso de la Empresa C, la aceleración más significativa la presentó una Pulidora Bosh con una aceleración de 0. 5857 m/s², por último, en la Empresa D con una aceleración de 0,4048 m/s², la Esmeriladora. En el artículo se realiza un resumen de los conceptos más importantes relacionados con vibraciones en el segmento corporal mano brazo, así como de los equipos y herramientas utilizados para su respectiva medición y evaluación.

Diseño e implementación de un sistema para la segmentación de clientes de una operadora celular

OpenAIRE

Cabrera Cuenca, Fabian; Leon Garcia, Sergio Jonathan; Ycaza Diaz, Ilse Lorena; Alvarado Ortega, Juan Aurelio

2009-01-01

La Operadora Celular “VIVO”, está operando desde 1993, siendo en la actualidad la empresa líder en el mercado servicios de telecomunicaciones. La compañía comercializa sus productos y servicios mediante varios canales de distribución directos e indirectos, posicionándose en el mercado como líder en la prestación de servicios de telecomunicaciones gracias a su cobertura y número de abonados. Uno de los principales segmentos de la Operadora Celular son sus clientes pospago, los cuales tie...

Aceptación diferenciada de alimentos transgénicos de origen vegetal y animal en la Región de La Araucanía, Chile

OpenAIRE

Schnettler, Berta; Sepúlveda, Oriana; Ruiz, Danilo

2008-01-01

Sobre la base del debate generado por los alimentos genéticamente modificados, particularmente respecto de los alimentos transgénicos (AT), en los países desarrollados, se determinó la importancia de esta variable en la compra de leche líquida y salsa de tomate en consumidores de Temuco (Región de La Araucanía, Chile) y la existencia de diferentes segmentos de mercado, mediante una encuesta a 400 personas. Utilizando análisis conjunto se determinó que la existencia de modificación genética (M...

Técnicas de elongación ósea

OpenAIRE

Gil Albarova, Jorge; Pablos Fernández, Julio de

1992-01-01

Las diferentes técnicas quirúrgicas de elongación ósea empleadas en la actualidad, pueden ser clasificadas según el modo de conseguir la consolidación del segmento elongado(l), o bien atendiendo al método quirúrgico practicado (2,3,4). Siguiendo este segundo criterio, podemos dividirlas en: 1.- Elongación ósea mediante osteotomía y distracción mecánica progresiva. Dependiendo del modo de practicar la osteotomía consideraremos: a) Osteotomía "a cielo abierto" y ...

Factores de calidad del servicio en el transporte público de pasajeros: estudio de caso de la ciudad de Toluca, México

OpenAIRE

Óscar Sánchez-Flores

2010-01-01

En este artículo se identifican, ponderan y valoran los factores que intervienen en la percepción de la calidad de servicio del transporte público en un corredor urbano que se caracteriza por una gestión delegada con tarifa fija y competencia en calidad. Mediante un modelo logit con especificación lineal de la función de utilidad, se estiman los coeficientes de cada factor de calidad de servicio para diferentes segmentos y estratos de la población. Los resultados de la estimación econométrica...

DISEÑO DE UNA ESTRATEGIA DE INTERVENCION BASADA EN EL DESARROLLO DE CAPITAL HUMANO PARA LA MINERIA ARTESANAL

OpenAIRE

DIAZ TOBAR, JULIO CESAR

2013-01-01

La Minería Artesanal chilena constituye el sub-segmento más vulnerable de la actividad minera, dada su escasa mecanización e infraestructura, bajos estándares de seguridad, nulo acceso a crédito y un bajo nivel de capital humano empresarial y laboral. La Subsecretaría de Minería, se hace cargo de este problema a través de una serie de actores e instrumentos, cuyo objetivo es el fomento de la Minería Artesanal, mediante financiamiento de proyectos, transferencia técnica y capaci...

Plan de gestión del turismo de reuniones para la satisfacción del visitante de Chiclayo

OpenAIRE

Serruto Perea, Elvis

2017-01-01

El turismo de reuniones adquiere gran importancia en el desarrollo turístico de una ciudad por sus beneficios económicos y sociales. La presente tesis tiene como objetivo diseñar un plan de gestión del turismo de reuniones identificando los recursos turísticos necesarios para lograr la satisfacción del visitante en la ciudad de Chiclayo. Mediante entrevistas a expertos y encuestas realizadas, se logró realizar un análisis de la demanda y oferta para el segmento de turismo de reuniones. La in...

Anterior pseudoarthrectomy for symptomatic Bertolotti's syndrome.

Science.gov (United States)

Malham, Gregory M; Limb, Rebecca J; Claydon, Matthew H; Brazenor, Graeme A

2013-12-01

Painful L5/S1 pseudoarthrosis has been previously managed with posterior excision and/or lumbar fusion. To our knowledge, the anterior approach for L5/S1 pseudoarthrectomy in the treatment of Bertolotti's syndrome has not been described. We present two patients with severe symptomatic L5/S1 pseudoarthroses that were successfully excised via an anterior retroperitoneal approach with 2 year clinical and radiological follow-up. The literature regarding surgical treatments for Bertolotti's syndrome is reviewed. The technique for an anterior retroperitoneal approach is described. This approach has been safe and effective in providing long term symptomatic relief to our two patients. Further studies comparing the outcomes of anterior versus posterior pseudoarthrectomy will guide the management of this condition. Copyright © 2013 Elsevier Ltd. All rights reserved.

The anterior interhemispheric approach: a safe and effective approach to anterior skull base lesions.

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Mielke, Dorothee; Mayfrank, Lothar; Psychogios, Marios Nikos; Rohde, Veit

2014-04-01

Many approaches to the anterior skull base have been reported. Frequently used are the pterional, the unilateral or bilateral frontobasal, the supraorbital and the frontolateral approach. Recently, endoscopic transnasal approaches have become more popular. The benefits of each approach has to be weighted against its complications and limitations. The aim of this study was to investigate if the anterior interhemispheric approach (AIA) could be a safe and effective alternative approach to tumorous and non-tumorous lesions of the anterior skull base. We screened the operative records of all patients with an anterior skull base lesion undergoing transcranial surgery. We have used the AIA in 61 patients. These were exclusively patients with either olfactory groove meningioma (OGM) (n = 43), ethmoidal dural arteriovenous fistula (dAVF) ( n = 6) or frontobasal fractures of the anterior midline with cerebrospinal fluid (CSF) leakage ( n = 12). Patient records were evaluated concerning accessibility of the lesion, realization of surgical aims (complete tumor removal, dAVF obliteration, closure of the dural tear), and approach related complications. The use of the AIA exclusively in OGMs, ethmoidal dAVFs and midline frontobasal fractures indicated that we considered lateralized frontobasal lesions not suitable to be treated successfully. If restricted to these three pathologies, the AIA is highly effective and safe. The surgical aim (complete tumor removal, complete dAVF occlusion, no rhinorrhea) was achieved in all patients. The complication rate was 11.5 % (wound infection (n = 2; 3.2 %), contusion of the genu of the corpus callosum, subdural hygroma, epileptic seizure, anosmia and asymptomatic bleed into the tumor cavity (n = 1 each). Only the contusion of the corpus callosum was directly related to the approach (1.6 %). Olfaction, if present before surgery, was preserved in all patients, except one (1.6 %). The AIA is an effective and a safe approach

Innervation of the Anterior Sacroiliac Joint.

Science.gov (United States)

Cox, Marcus; Ng, Garrett; Mashriqi, Faizullah; Iwanaga, Joe; Alonso, Fernando; Tubbs, Kevin; Loukas, Marios; Oskouian, Rod J; Tubbs, R Shane

2017-11-01

Sacroiliac joint pain can be disabling and recalcitrant to medical therapy. The innervation of this joint is poorly understood, especially its anterior aspect. Therefore, the present cadaveric study was performed to better elucidate this anatomy. Twenty-four cadaveric sides underwent dissection of the anterior sacroiliac joint, with special attention given to any branches from regional nerves to this joint. No femoral, obturator, or lumbosacral trunk branches destined to the anterior sacroiliac joint were identified in the 24 sides. In 20 sides, one or two small branches (less than 0.5 mm in diameter) were found to arise from the L4 ventral ramus (10%), the L5 ventral ramus (80%), or simultaneously from both the L4 and L5 ventral rami (10%). The length of the branches ranged from 5 to 31 mm (mean, 14 mm). All these branches arose from the posterior part of the nerves and traveled to the anterior surface of the sacroiliac joint. No statistical significance was found between sides or sexes. An improved knowledge of the innervation of the anterior sacroiliac joint might decrease suffering in patients with chronic sacroiliac joint pain. Copyright © 2017 Elsevier Inc. All rights reserved.

Comparación del gasto energético en reposo determinado mediante calorimetría indirecta y estimado mediante fórmulas predictivas en mujeres con grados de obesidad I a III

OpenAIRE

Alicia Parra-Carriedo; Loren Cherem-Cherem; Daniela Galindo-De Noriega; Mary Carmen Díaz-Gutiérrez; Ana Bertha Pérez-Lizaur; César Hernández-Guerrero

2013-01-01

Introducción: La determinación del gasto energético en reposo (GER) se calcula cotidianamente a partir de fórmulas predictivas aunque el resultado varía dependiendo de la población. Objetivo: Comparar la determinación del GER mediante calorimetría indirecta y mediante las ecuaciones Harris-Benedict (HB), Mifflin (MF), Organización Mundial de la Salud (OMS), "Institute of Medicine" (IOM), Fórmula Rápida (FR) y Valencia (VA) en mujeres con grados de obesidad I a III. Métodos: Mujeres adultas me...

Diseño y evaluación de microesferas biodegradables de agentes neuroprotectores para el tratamiento de patologías degenerativas que afectan al segmento posterior del ojo

OpenAIRE

Checa Casalengua, Patricia

2012-01-01

Las patologías neurodegenerativas que afectan al segmento posterior del ojo se caracterizan por ser devastadoras y comprometer la visión en un gran número de sujetos. Representan un grupo de enfermedades que cursan con un daño progresivo del nervio óptico y pérdida de fotorreceptores y células ganglionares de la retina (CGR), que sin un tratamiento continuado, pueden conducir a ceguera irreversible. Las nuevas tendencias en el tratamiento de estas enfermedades neurodegenerativas oculares e...

Ensayo no destructivo de soldaduras en pernos conectores mediante inspección acústica

OpenAIRE

Aznar, A.; Cervera, J.; Ortiz, J.; Hernando, J. I.

2012-01-01

Los pernos conectores aportan múltiples ventajas de uso, entre las que se encuentra el elevado margen de seguridad que ofrecen sus soldaduras ejecutadas mediante arco eléctrico. Estas soldaduras, aunque ampliamente fiables, son difícilmente comprobadas mediante ensayos no destructivos. Aparte de la inspección visual, que aporta gran información sobre la calidad de ejecución de la soldadura, el resto de ensayos no destructivos (líquidos penetrantes, partículas magnéticas, ultrasonidos, radiogr...

Anterior, posterior, left anterior oblique, and geometric mean views in gastric emptying studies using a glucose solution

Energy Technology Data Exchange (ETDEWEB)

Phillips, W.T. [Dept. of Radiology, Univ. of Texas Health Science Center, San Antonio, TX (United States); McMahan, C.A. [Dept. of Pathology, Univ. of Texas Health Science Center, San Antonio, TX (United States); Lasher, J.C. [Dept. of Radiology, Univ. of Texas Health Science Center, San Antonio, TX (United States); Blumhardt, M.R. [Dept. of Pathology, Univ. of Texas Health Science Center, San Antonio, TX (United States); Schwartz, J.G. [Dept. of Pathology, Univ. of Texas Health Science Center, San Antonio, TX (United States)

1995-02-01

Previous research has shown that the single anterior view of the stomach overestimates the gastric half-emptying time of a solid meal compared to the geometric mean of the anterior and posterior views. Little research has been performed comparing the various views of gastric emptying of a glucose solution. After an overnight fast, 49 nondiabetic subjects were given a 450 ml solution containing 50 g of glucose and 200 {mu}Ci of technetium-99m sulfur colloid. Sequential 1-min anterior, posterior, and left anterior oblique views were obtained every 15 min. The mean percent solution remaining in the stomach for all three views differed from the geometric mean by 1.9% or less at all time points. Average gastric half-emptying times were: geometric mean, 62.7{+-}3.3 min; anterior, 61.9{+-}3.2 min; posterior, 63.5{+-}3.5 min; and left anterior oblique, 61.6{+-}3.3 min. These half-emptying times were not statistically different. For individual patients, differences between all three views and the geometric mean were not clinically important. Approximately 95% of all patients are expected to have gastric half-emptying times measured by any of the three single views within 17 min of the gastric half-emptying time obtained using the geometric mean. The imaging of gastric emptying using glucose solutions can be performed using a convenient single view which allows continuous dynamic imaging. (orig.)

Pectus excavatum: corrección estética mediante prótesis a medida Pectus excavatum: aesthetic correction using customized implants

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J. Bisbal Piazuelo

2010-12-01

Full Text Available Las depresiones de la región condroesternal, conocidas como tórax en embudo o pectus excavatum, son una de las anomalías congénitas mas frecuentes de la pared anterior del tórax. Su corrección ha sido siempre quirúrgica, para lo cual están descritas varias técnicas que pueden clasificarse en dos grupos: 1 Las que actúan modificando la anatomía costal y esternal y 2 Las que se limitan a disimular el defecto mediante rellenos. Ante casos de pectus excavatum en adultos, en los que se ha descartado totalmente la problemática cardiorrespiratoria y que por consiguiente, consideramos como un problema estético, estamos empleando desde hace 8 años una técnica consistente en la aplicación de prótesis de silicona hechas a medida, con resultados muy satisfactorios y con un nivel de complicaciones prácticamente nulo.The depressions in the chondrosternal region, known as pectus excavatum, are the most usual congenital problems of the anterior chest-wall. Its correction has always been surgical, using two different techniques, as follows: 1 The ones that works changing the costal anatomy; and 2 The ones that just covers the defect up with fillers. For those cases of pectus excavatum in adults, in which the cardiorespiratory problems have been completely ruled out, and are considered as aesthetic problems, we have been using a corrective technique for the last 8 years with a made to measure silicone prosthesis, with very satisfactory results and with almost no complications.

Anterior capsulotomy using the CO2 laser

Science.gov (United States)

Barak, Adiel; Ma-Naim, Tova; Rosner, Mordechai; Eyal, Ophir; Belkin, Michael

1998-06-01

Continuous circular capsulorhexis (CCC) is the preferred technique for removal of the anterior capsule during cataract surgery due to this technique assuring accurate centration of the intraocular lens. During modern cataract surgery, especially with small or foldable intra ocular lenses, centration of the lens is obligatory. Radial tears at the margin of an anterior capsulotomy may be associated with the exit of at least one loop of an intraocular lens out of the capsular bag ('pea pod' effect) and its subsequent decentration. The anterior capsule is more likely to ream intact if the continuous circular capsulorhexis (CCC) technique is used. Although manual capsulorhexis is an ideal anterior capsulectomy technique for adults, many ophthalmologists are still uncomfortable with it and find it difficult to perform, especially in complicated cases such as these done behind small pupil, cataract extraction in children and pseudoexfoliation syndrome. We have developed a technique using a CO2 laser system for safe anterior capsulotomy and tested it in animal eyes.

A and B mode ultrasonography in preoperative evaluation of lens and posterior segment of dogs eyes with cataract

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Bianca C. Martins

2010-02-01

Full Text Available Ultrasonography of the lens and posterior segment is an indispensable step in the preoperative evaluation of dogs with cataracts, since ophthalmoscopy is not feasible when there is opacification of the lens. This study evaluated the echographic conditions of cataractous lens and fundus of the eye in dogs affected by cataracts. The study was conducted in 30 dogs (56 eyes, 10 males and 20 females, with different types of cataracts at different stages of development. Echography in A and B modes, simultaneously, was carried out for the examination of the lens and posterior segment. The examinations revealed anterior cortical, posterior cortical and nuclear cataract in 12 eyes (21.4%, anterior cortical, posterior cortical, nuclear and posterior capsular in 23 eyes (41%, anterior cortical, posterior cortical and posterior capsular cataract in one eye (1.7%, anterior cortical and nuclear cataract in one eye (1.7%, anterior cortical, nuclear and posterior capsular cataract in five eyes (8.9%, and anterior cortical cataract in seven eyes (12.5%. Abnormal ultrasonographic alterations were observed in the posterior segment in 26 eyes evaluated (46.4%. Vitreal degeneration was detected in 12 eyes (21.4%, images of vitreal exudate or hemorrhage in seven eyes (12.5%, persistence of hyaloid artery in four eyes (7.1% and lens subluxation in three eyes (5.3%. The results obtained reiterate the importance of ultrasonography in canine patients presented for cataract surgery given that alterations of the posterior segment are difficult to identify in a clinical examination when the lens is opacified.A ultrassonografia do segmento posterior do bulbo do olho é etapa indispensável na avaliação de cães com catarata que serão submetidos à facectomia, uma vez que a oftalmoscopia não é factível quando há opacificação da lente, notadamente nas cataratas maduras. Este estudo avaliou as condições ecográficas da lente cataratogênica e do fundo de olho de c

Aphasia following anterior cerebral artery occlusion

International Nuclear Information System (INIS)

Shimosaka, Shinichi; Waga, Shiro; Kojima, Tadashi; Shimizu, Takeo; Morikawa, Atsunori

1982-01-01

We have report two cases of aphasia that had infarcts in the distribution of the left or right anterior cerebral artery, as confirmed by computed tomography. Case 1 is a right-handed, 65-year-old man in whom computerized tomographic scanning revealed an infarction of the territory of the left anterior cerebral artery after the clipping of the anterior communicating artery aneurysm. The standard language test of aphasia (SLTA) revealed non-fluent aphasia with dysarthria, good comprehension, almost normal repetition with good articulation, and a defectiveness in writing. This syndrome was considered an instance of transcortical motor aphasia. Although three years had passed from the onset, his aphasia did not show any improvement. Case 2 is a 37-year-old man who is right-handed but who can use his left hand as well. He was admitted because of subarachnoid hemorrhage from an anterior communicating aneurysm. Because of postoperative spasm, an infarction in the distribution of the right anterior cerebral artery developed. He was totally unable to express himself vocally, but he could use written language quite well to express his ideas and had a good comprehension of spoken language. This clinical picture was considered that of an aphemia. After several weeks, his vocalization returned, but the initial output was still hypophonic. (J.P.N.)

Anterior ethmoid anatomy facilitates dacryocystorhinostomy.

Science.gov (United States)

Blaylock, W K; Moore, C A; Linberg, J V

1990-12-01

The ethmoid air cell labyrinth lies adjacent to the medial orbital wall, extending even beyond the sutures of the ethmoid bone. Its anatomic relationship to the lacrimal sac fossa is important in lacrimal surgery. We evaluated computed tomographic scans of 190 orbits with normal ethmoid anatomy to define the anatomic relationship of anterior ethmoid air cells to the lacrimal sac fossa. In 93% of the orbits, the cells extended anterior to the posterior lacrimal crest, with 40% entering the frontal process of the maxilla. This anatomic relationship may be used to facilitate the osteotomy during dacryocystorhinostomy. During a 10-year period (310 cases), one of us routinely entered the anterior ethmoid air cells to initiate the osteotomy during dacryocystorhinostomy. This technique has helped to avoid lacerations of the nasal mucosa.

Validação prospectiva do escore de risco dante pazzanese em síndrome coronariana aguda sem supradesnivelamento do segmento ST

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Elizabete Silva dos Santos

2013-09-01

Full Text Available FUNDAMENTO: Em Síndrome Coronariana Aguda (SCA sem Supradesnivelamento do segmento ST (SST é importante estimar a probabilidade de eventos adversos. Para esse fim, as diretrizes recomendam modelos de estratificação de risco. O escore de risco Dante Pazzanese (escore DANTE é um modelo simples de estratificação de risco, composto das variáveis: aumento da idade (0 a 9 pontos; antecedente de diabete melito (2 pontos ou acidente vascular encefálico (4 pontos; não uso de inibidor da enzima conversora da angiotensina (1 ponto; elevação da creatinina (0 a 10 pontos; combinação de elevação da troponina e depressão do segmento ST (0 a 4 pontos. OBJETIVO: Validar o escore DANTE em pacientes com SCA sem SST. MÉTODOS: Estudo prospectivo, observacional, com inclusão de 457 pacientes, de setembro de 2009 a outubro de 2010. Os pacientes foram agrupados em: muito baixo, baixo, intermediário e alto risco de acordo com a pontuação do modelo original. A habilidade preditiva do escore foi avaliada pela estatística-C. RESULTADOS: Foram 291 (63,7% homens e a média da idade 62,1 anos (11,04. Dezessete pacientes (3,7% apresentaram o evento de morte ou (reinfarto em 30 dias. Ocorreu aumento progressivo na proporção do evento, com aumento da pontuação: muito baixo risco = 0,0%; baixo risco = 3,9%; risco intermediário = 10,9%; alto risco = 60,0%; p < 0,0001. A estatística-C foi de 0,87 (IC 95% 0,81-0,94; p < 0,0001. CONCLUSÃO: O escore DANTE apresentou excelente habilidade preditiva para ocorrência dos eventos específicos e pode ser incorporado na avaliação prognóstica de pacientes com SCA sem SST.

Winging of scapula due to serratus anterior tear

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Varun Singh Kumar

2014-10-01

Full Text Available 【Abstract】Winging of scapula occurs most commonly due to injury to long thoracic nerve supplying serratus anterior muscle. Traumatic injury to serratus anterior muscle itself is very rare. We reported a case of traumatic winging of scapula due to tear of serratus anterior muscle in a 19-year-old male. Winging was present in neutral position and in extension of right shoulder joint but not on "push on wall" test. Patient was managed conservatively and achieved satisfactory result. Key words: Serratus anterior tear; Scapula; Wounds and injuries

Impact of Isometric Contraction of Anterior Cervical Muscles on Cervical Lordosis.

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Fedorchuk, Curtis A; McCoy, Matthew; Lightstone, Douglas F; Bak, David A; Moser, Jacque; Kubricht, Brett; Packer, John; Walton, Dustin; Binongo, Jose

2016-09-01

This study investigates the impact of isometric contraction of anterior cervical muscles on cervical lordosis. 29 volunteers were randomly assigned to an anterior head translation (n=15) or anterior head flexion (n=14) group. Resting neutral lateral cervical x-rays were compared to x-rays of sustained isometric contraction of the anterior cervical muscles producing anterior head translation or anterior head flexion. Paired sample t-tests indicate no significant difference between pre and post anterior head translation or anterior head flexion. Analysis of variance suggests that gender and peak force were not associated with change in cervical lordosis. Chamberlain's to atlas plane line angle difference was significantly associated with cervical lordosis difference during anterior head translation (p=0.01). This study shows no evidence that hypertonicity, as seen in muscle spasms, of the muscles responsible for anterior head translation and anterior head flexion have a significant impact on cervical lordosis.

Propuesta de incorporación del Segmento Pymes en las operaciones de crédito de la Cooperativa de Ahorro y Crédito 29 de Octubre

OpenAIRE

Ríos Páliz, Cristina Araceli

2015-01-01

En el proyecto que se presenta a continuación permite aplicar una metodología de análisis que brinde a la Cooperativismo de Ahorro y Crédito “29 de Octubre”, incorporar operaciones de crédito del segmento Comercial Pymes a su cartera de crédito cumpliendo lo establecido por la Superintendencia de Bancos, normativa que será transitoria para la Superintendencia de Economía Popular y Solidaria hasta que defina sus políticas de control y seguimiento para las Cooperativas de Ahorro y Crédito por ...

Escore de risco Dante Pazzanese para síndrome coronariana aguda sem supradesnivelamento do segmento ST Score de riesgo dante pazzanese para síndrome coronario agudo sin supradesnivel del segmento ST Dante Pazzanese risk score for non-st-segment elevation acute coronary syndrome

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Elizabete Silva dos Santos

2009-10-01

Full Text Available FUNDAMENTO: Em síndrome coronariana aguda (SCA, é importante estimar a probabilidade de eventos adversos. OBJETIVO: Desenvolver um escore de risco em uma população brasileira com SCA sem supradesnivelamento do segmento ST (SST. MÉTODOS: Foram avaliados prospectivamente 1.027 pacientes em um centro brasileiro de cardiologia. Um modelo de regressão logística múltipla foi desenvolvido para prever o risco de morte ou de (reinfarto em 30 dias. A acurácia preditiva do modelo foi determinada pelo C statistic. RESULTADOS: O evento combinado ocorreu em 54 pacientes (5,3%. O escore foi criado pela soma aritmética de pontos dos preditores independentes, cujas pontuações foram designadas pelas respectivas probabilidades de ocorrência do evento. As seguintes variáveis foram identificadas: aumento da idade (0 a 9 pontos; antecedente de diabete melito (2 pontos ou de acidente vascular cerebral (4 pontos; não utilização prévia de inibidor da enzima conversora da angiotensina (1 ponto; elevação da creatinina (0 a 10 pontos; e combinação de elevação da troponina I cardíaca e depressão do segmento ST (0 a 4 pontos. Foram definidos quatro grupos de risco: muito baixo (até 5 pontos; baixo (6 a 10 pontos; intermediário (11 a 15 pontos; e alto risco (16 a 30 pontos. O C statistic para a probabilidade do evento foi de 0,78 e para o escore de risco em pontuação de 0,74. CONCLUSÃO: Um escore de risco foi desenvolvido para prever morte ou (reinfarto em 30 dias em uma população brasileira com SCA sem SST, podendo facilmente ser aplicável no departamento de emergência.FUNDAMENTO: En el síndrome coronario agudo (SCA, es importante estimar la probabilidad de eventos adversos. OBJETIVO: Desarrollar un score de riesgo en una población brasileña con SCA sin supradesnivel del segmento ST (SST. MÉTODOS: Se evaluaron prospectivamente 1.027 pacientes en un centro brasileño de cardiología. Un modelo de regresión logística múltiple se

Passive Anterior Tibial Subluxation in the Setting of Anterior Cruciate Ligament Injuries: A Comparative Analysis of Ligament-Deficient States.

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McDonald, Lucas S; van der List, Jelle P; Jones, Kristofer J; Zuiderbaan, Hendrik A; Nguyen, Joseph T; Potter, Hollis G; Pearle, Andrew D

2017-06-01

Static anterior tibial subluxation after an anterior cruciate ligament (ACL) injury highlights the abnormal relationship between the tibia and femur in patients with ACL insufficiency, although causal factors including injuries to secondary stabilizers or the time from injury to reconstruction have not been examined. To determine static relationships between the tibia and femur in patients with various states of ACL deficiency and to identify factors associated with anterior tibial subluxation. Cross-sectional study; Level of evidence, 3. Patients treated for ACL injuries were identified from an institutional registry and assigned to 1 of 4 cohorts: intact ACL, acute ACL disruption, chronic ACL disruption, and failed ACL reconstruction (ACLR). Anterior tibial subluxation of the medial and lateral compartments relative to the femoral condyles were measured on magnetic resonance imaging (MRI), and an MRI evaluation for meniscal tears, chondral defects, and injuries to the anterolateral ligament (ALL) was performed. One hundred eighty-six ACL-insufficient knees met inclusion criteria, with 26 patients without an ACL injury utilized as a control group. In the lateral compartment, the mean anterior tibial subluxation measured 0.78 mm for the control group (n = 26), 2.81 mm for the acute ACL injury group (n = 74), 3.64 mm for the chronic ACL injury group (n = 40), and 4.91 mm for the failed ACLR group (n = 72). In the failed ACLR group, 37.5% of patients demonstrated lateral compartment anterior subluxation ≥6 mm, and 11.1% of this group had anterior subluxation of the lateral compartment ≥10 mm. Multivariate regression revealed that the presence of both medial and lateral chondral defects was associated with a mean 1.09-mm increase in subluxation of the medial compartment ( P = .013). The combination of medial and lateral meniscal tears was an independent predictor of increased lateral tibia subluxation by 1.611 mm ( P = .0022). Additionally, across all knee states

Gluteoplastia tridimensional mediante distribución volumétrica precisa

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R. Alfonso Vallarta-Rodríguez

Full Text Available Introducción y objetivo. La gluteoplastia mediante lipoinyección debe ser una cirugía segura que partiendo de una planificación adecuada, permita un aumento moderado enfatizando contornos y mejorando la forma natural de la región glútea. Debe permitir obtener resultados predecibles, duraderos y reproducibles, además de ser aplicable en una amplia variedad de pacientes. Presentamos un método de gluteoplastia de aumento sistematizada con lipoinyección que además de ser reproducible, permite obtener resultados consistentes, naturales y permanentes, distribuyendo estratégicamente volúmenes en cuadrantes. Pacientes y Método. Con mínima manipulación del lipoaspirado, infiltramos cantidades controladas en 9 cuadrantes en cada nalga. El cuadrante central representa la zona de máxima proyección y recibe la mitad del volumen. Denominamos zonas primarias a los 4 cuadrantes en los ejes X-Y, zonas que reciben el 40% del volumen infiltrado. Las zonas secundarias o menores corresponden a los cuadrantes situados entre los cuadrantes principales, y reciben el 10% del volumen total. Resultados. Entre 2008 y 2013 intervenimos a 75 pacientes para aumento y remodelación de glúteos con la técnica descrita, todas mujeres de 24 a 52 años. Las pacientes presentaron una convalecencia favorable y una satisfacción del 93%. Nueve pacientes presentaron seromas que se resolvieron mediante aspiración en consultorio. No se presentaron complicaciones mayores. Conclusiones. Presentamos un método de remodelación glútea mediante lipoinyección que, además de ofrecer excelentes resultados, predecibles, consistentes, naturales y permanentes, es lógico y reproducible.

Anterior Urethral Valves

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Vidyadhar P. Mali

2006-07-01

Full Text Available We studied the clinical presentation and management of four patients with anterior urethral valves; a rare cause of urethral obstruction in male children. One patient presented antenatally with oligohydramnios, bilateral hydronephrosis and bladder thickening suggestive of an infravesical obstruction. Two other patients presented postnatally at 1 and 2 years of age, respectively, with poor stream of urine since birth. The fourth patient presented at 9 years with frequency and dysuria. Diagnosis was established on either micturating cystourethrogram (MCU (in 2 or on cystoscopy (in 2. All patients had cystoscopic ablation of the valves. One patient developed a postablation stricture that was resected with an end-to-end urethroplasty. He had an associated bilateral vesicoureteric junction (VUJ obstruction for which a bilateral ureteric reimplantation was done at the same time. On long-term follow-up, all patients demonstrated a good stream of urine. The renal function is normal. Patients are continent and free of urinary infections. Anterior urethral valves are rare obstructive lesions in male children. The degree of obstruction is variable, and so they may present with mild micturition difficulty or severe obstruction with hydroureteronephrosis and renal impairment. Hence, it is important to evaluate the anterior urethra in any male child with suspected infravesical obstruction. The diagnosis is established by MCU or cystoscopy and the treatment is always surgical, either a transurethral ablation or an open resection. The long-term prognosis is good.

Causes and consequences of anterior pharyngeal pouch after total laryngectomy.

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Anderson, S; Hogan, D; Panizza, B

2014-07-01

To assess the frequency of anterior pharyngeal pouch formation after total laryngectomy, and to discuss the causes and consequences of anterior pharyngeal pouch formation. A prospective, observational study of 43 patients undergoing total laryngectomy. Data collected included laryngeal defect closure type, tumour staging and demographic information. A barium swallow was performed on day 7-14 after surgery to assess for anterior pharyngeal pouch formation and fistula formation. The incidence of anterior pharyngeal pouch formation was 47 per cent. Patients who did not have an anterior pharyngeal pouch on swallow imaging assessment were less likely to develop a pharyngo-cutaneous fistula. There was no statistically significant association between laryngeal defect closure type and anterior pharyngeal pouch formation. The anterior pharyngeal pouch is a dynamic phenomenon best investigated with a fluoroscopic swallow imaging study. Its causes are multi-factorial. Absence of an anterior pharyngeal pouch appears to confer protection against pharyngo-cutaneous fistula formation, hastening commencement of adjuvant therapy and an oral diet.

Interaccion de promastigotes de Leishmania donovani con celulas de exudado peritonial de ratones mediante la influencia de la quimotripsina

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Lucila Arcay

1986-06-01

Full Text Available Se hace un estudio de la interacción de promastigotes de Leishmania donovani con células de exudado peritoneal de ratón (c e p mediante la influencia de la quimotripsina. La adhesión de los promastigotes a las c e p fue terminal y marginal, y en observaciones hechas a partir de los 10 minutos de enfrentamiento, esta adhesión fue nula hasta los 30 minutos en el grupo tratado, y sólo a las das horas hubo un pequeño incremento (2.4% con respecto al control. Se observa marcada disminución en todos los parámetro medidos, tales como enlace, penetración, multiplicación intracelular, división de formas flageladas, en el grupo tratado. La quimotripsina favorece la formación de formas intermedias flageladas, heciendose el parásito piriforme y esférico, apareciendo una forma aberrante de extremo anterior cilindrico que semeja a una forma coanoflagelada. Se sospecha que la enzima reduce efectivamente fragmentos proteicos o péptidos, los cuales pueden haber sido tan pequeños como para esconder a otros ligandos relacionados con la adhesión macrófago-parásito.

Diseño mediante elementos finitos de componentes estructurales de un cuadricóptero para impresión 3D

OpenAIRE

PARDO APARISI, IVÁN

2016-01-01

El trabajo tiene como objetivo diseñar componentes estructurales, mediante el método de elementos finitos, que serán utilizados en un dron de cuatro rotores (cuadricóptero). Una característica particular de este proyecto es que los componentes estructurales a diseñar serán fabricados mediante impresión 3D. Pardo Aparisi, I. (2016). Diseño mediante elementos finitos de componentes estructurales de un cuadricóptero para impresión 3D. http://hdl.handle.net/10251/75994. TFGM

Manejo sostenible y sustentable de fincas productoras mediante procesos participativos en Sáchica, Boyacá

OpenAIRE

Ángel Eduardo Ramírez-Amaya; Germán Gonzalo Hurtado

2013-01-01

Objetivo. Elaborar un proyecto de desarrollo sostenible y sustentable de fincas productoras mediante procesos participativos en el municipio de Sáchica, Boyacá. Materiales y métodos. La investigación se realizó con familias campesinas de la vereda Arrayán Alto, del municipio de Sáchica, Boyacá, mediante la metodología Investigación Acción Participativa (IAP), que se centra en la participación de las comunidades para elaborar propuestas concertadas con ellas. El trabajo se desarrolló en varias...

INVESTIGACIÓN DE FIBRAS DE POLIPROPILENO ADITIVADAS CON NANOPARTÍCULAS DE PLATA PARA LA MEJORA DE PROPIEDADES BIOACTIVAS EN EL SECTOR TEXTIL

OpenAIRE

FAGES SANTANA, EDUARDO

2013-01-01

El presente y el futuro de la industria textil están íntimamente ligados al concepto de textil técnico, artículos éstos concebidos para su aplicación en diferentes segmentos de mercado: salud y ámbito hospitalario, industria naval, aeronáutica y de automoción, sector de construcción e ingeniería civil, defensa e industria militar, etc. En el presente proyecto de investigación se ha contemplado la funcionalización de fibras de polipropileno mediante la aditivación de nanopartículas de plata. D...

Tratamiento ortodóncico-quirúrgico de una adaquia anterior Orthodontic-surgical treatment of anterior open bite

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Anselmo López Rodríguez

2004-08-01

Full Text Available En la práctica y desarrollo de la cirugía ortognática en el Hospital Universitario "Comandante Manuel Fajardo" a lo largo de los años, la morbilidad de diferentes anomalías del desarrollo maxilo-mandibulares ha mostrado que la adaquia o mordida abierta anterior es bastante frecuente. Desde tempranas edades se detectan y son tratadas por el especialista en Ortodoncia. El cerrar una adaquia en ocasiones se torna difícil y es cuando el análisis del paciente debe realizarse en el grupo multidisciplianrio integrado por cirujanos maxilofaciales, ortodoncistas y protesistas. Se han detectado diferentes causas que pueden producir una adaquia y en su mayor parte son hábitos nocivos que perduran en el paciente; por ejemplo, la interferencia con el centro de crecimiento condilar, la succión del pulgar, la deglución atípica o lengua protractil, la respiración bucal, entre otras. Este trabajo está encaminado en mostrar los diferentes tratamientos que en la actualidad se emplean para reducir una mordida abierta anterior y presenta el caso de una niña de 14 años de edad portadora de una adaquia de más de 18 mm.In the context of orthognathic surgery practice and development at "Comandante Manuel Fajardo" university hospital, morbidity from several anomalies in the maxillomandibular growth has shown that anterior open bite is pretty common. Such anomalies are detected and treated by the orthodontist at early childhood. To close an anterior open bite is difficult sometimes and requires the analysis of the patient by a multidisciplinary group made up of maxillofacial surgeons, orthodontists and denture specialists. A number of causes may be the origin of anterior open bite, mainly harmful habits that persist in the patient such as interference with the condylar growth center, dummy sucking, atypical deglutition or proctatile tongue, mouth breathing, among others. This paper is aimed at showing different therapies that presently reduce anterior open

Oferta y demanda en el mercado turístico homosexual: una propuesta de estrategias de intercambio para la mejora del marketing en el segmento

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Caryn Moner Korflür

2007-01-01

Full Text Available La demanda turística homosexual presenta características diferenciales, y necesidades y motivaciones específicas a las que la gran mayoría de empresas del sector turístico no han sabido y/o podido responder. El presente trabajo trata de identificar los principales tipos de empresas u organizaciones que actúan en este mercado y que constituyen la oferta turística, definir las peculiaridades de la demanda turística homosexual en cuanto a sus necesidades y expectativas, y exponer una serie de estrategias de marketing, ya sea segmentación, posicionamiento o mezcla de marketing, a seguir por aquellas empresas del sector turístico que deseen orientarse hacia el segmento homosexual.

Combate del moho gris (Botrytis cinerea de la fresa mediante Gliocladium roseum

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Néstor Chaves

2004-01-01

Full Text Available En la zona de Poasito de Alajuela, se evaluó la acción del antagonista Gliocladium roseum, en forma individual y en conjunto con los fungicidas empleados en la finca, para el combate de Botrytis cinerea en fresa; comparándose los resultados contra los obtenidos con el manejo comercial. Se empleó un diseño de bloques completos al azar con 4 repeticiones y se hicieron aplicaciones semanales del antagonista (a una concentración ³ 107 conidios ml-1 durante un período aproximado de 4 meses (julio-octubre del 2000. Se evaluó la incidencia de moho gris en condiciones de campo y poscosecha, así como el efecto de los fungicidas aplicados sobre la germinación de los conidios del antagonista, mediante una prueba in vitro. Se obtuvo un combate más efectivo de la enfermedad en condiciones de campo al emplear el biocontrolador sólo o en conjunto con los fungicidas, con respecto al manejo comercial que se hace de la misma. En poscosecha, el desempeño del antagonista fue estadísticamente igual al del combate químico. Estos resultados muestran que los fungicidas aplicados no afectan considerablemente al antagonista, lo que se corroboró con la prueba in vitro. Al emplear G. roseum para el combate de B. cinerea no sólo se logra combatir efectivamente a este, sino también el resto de los patógenos (Colletotrichum, Phytophthora, Rhizoctonia, Rhizopus,Alternaria, Fusarium, Verticillium y Penicillium, ya que el porcentaje de frutas sanas es mayor al integrar la acción del antagonista al manejo de enfermedades de la finca. Sin embargo, estas diferencias no son estadísticamente significativas. Por lo anterior se concluye que G. roseum constituye una posible alternativa de manejo integrado del moho gris en fresa.

Estudo da motilidade espontânea de segmentos de cólon ascendente, transverso e descendente de ratos, em banhos fisiológicos para órgãos isolados Study of spontaneous motility of parts of colon in physiologic chamber for isolated organ, in rats

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Francisco Rodrigues de Sales

2004-01-01

Full Text Available OBJETIVO: Identificar as diferenças na freqüência, amplitude de contrações, traçados negativos e forma das ondas. MÉTODOS: Fez-se um estudo da motilidade espontânea de segmentos de cólon ascendente, transverso e descendente de ratas, em banhos fisiológicos para órgãos isolados. RESULTADOS: Verificou-se grande variabilidade de freqüências e amplitudes das contrações registradas. Embora tenha havido predominância de contrações fortes no cólon descendente e de contrações menores no cólon transverso, todos os tipos de ondas foram encontrados nos três segmentos. CONCLUSÕES: O cólon apresenta motilidade muito variável, não permitindo identificar padrão característico inconfundível para cada um dos três segmentos, ascendente, transverso e descendente. O cólon transverso apresentou maior quantidade de traçados negativos, menor amplitude de contrações e menor freqüência de contrações. O cólon descendente apresentou o menor número de traçados negativos e a maior média de amplitude de contrações dos três segmentos.PURPOSE: The aim was to identify the difference in frequency, amplitude of contractions, negative tracing and shape of the waves. METHODS: We made one study of spontaneous motility of parts of colon from mouse, in physiologic chamber for isolated organ. RESULTS: It was found the biggest frequence variability and amplitude of contractions registered. Although there has been predominancy of strong contractions in the descending colon and weaker contractions in the transverse one, all kinds of waves were found in the three segments. CONCLUSIONS: The colon shows variable motility, which does not permit identify the unmistakable characteristic pattern for each of the three segments, ascendent, transverse and descending. The transverse colon shows a bigger quantity of negative traces, smaller amplitude of contractions and less frequency of contractions. The descending colon showed a smaller number of

Perawatan Ortodontik Gigi Anterior Berjejal dengan Tulang Alveolar yang Tipis

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Miesje K. Purwanegara

2015-09-01

Full Text Available Anterior teeth movement in orthodontic treatment is limited to labiolingual direction by very thin alveolar bone. An uncontrolled anterior tooth movement to labiolingual direction can cause alveolar bone perforation at its root segment. This case report is to remind us that alveolar bone thickness limits orthodontc tooth movement. A case of crowded anterior teeth with thin alveolar bone in malocclusion I is reported. This case is treated using adgewise orthodontic appliance. Protraction of anterior teeth is anticipated due to thin alveolar bone on the anterior surface. The conclusion is although the alveolar bone surrounding the crowded anterior teeth is thin, by controlling the movement the teeth reposition is allowed.

Anterior Cruciate Ligament OsteoArthritis Score (ACLOAS)

DEFF Research Database (Denmark)

Roemer, Frank W; Frobell, Richard; Lohmander, Stefan

2014-01-01

OBJECTIVE: To develop a whole joint scoring system, the Anterior Cruciate Ligament OsteoArthritis Score (ACLOAS), for magnetic resonance imaging (MRI)-based assessment of acute anterior cruciate ligament (ACL) injury and follow-up of structural sequelae, and to assess its reliability. DESIGN...

Biomechanical Measures During Landing and Postural Stability Predict Second Anterior Cruciate Ligament Injury After Anterior Cruciate Ligament Reconstruction and Return to Sport

Science.gov (United States)

Paterno, Mark V.; Schmitt, Laura C.; Ford, Kevin R.; Rauh, Mitchell J.; Myer, Gregory D.; Huang, Bin; Hewett, Timothy E.

2016-01-01

Background Athletes who return to sport participation after anterior cruciate ligament reconstruction (ACLR) have a higher risk of a second anterior cruciate ligament injury (either reinjury or contralateral injury) compared with non–anterior cruciate ligament–injured athletes. Hypotheses Prospective measures of neuromuscular control and postural stability after ACLR will predict relative increased risk for a second anterior cruciate ligament injury. Study Design Cohort study (prognosis); Level of evidence, 2. Methods Fifty-six athletes underwent a prospective biomechanical screening after ACLR using 3-dimensional motion analysis during a drop vertical jump maneuver and postural stability assessment before return to pivoting and cutting sports. After the initial test session, each subject was followed for 12 months for occurrence of a second anterior cruciate ligament injury. Lower extremity joint kinematics, kinetics, and postural stability were assessed and analyzed. Analysis of variance and logistic regression were used to identify predictors of a second anterior cruciate ligament injury. Results Thirteen athletes suffered a subsequent second anterior cruciate ligament injury. Transverse plane hip kinetics and frontal plane knee kinematics during landing, sagittal plane knee moments at landing, and deficits in postural stability predicted a second injury in this population (C statistic = 0.94) with excellent sensitivity (0.92) and specificity (0.88). Specific predictive parameters included an increase in total frontal plane (valgus) movement, greater asymmetry in internal knee extensor moment at initial contact, and a deficit in single-leg postural stability of the involved limb, as measured by the Biodex stability system. Hip rotation moment independently predicted second anterior cruciate ligament injury (C = 0.81) with high sensitivity (0.77) and specificity (0.81). Conclusion Altered neuromuscular control of the hip and knee during a dynamic landing task

Memory-guided attention in the anterior thalamus.

Science.gov (United States)

Leszczyński, Marcin; Staudigl, Tobias

2016-07-01

The anterior thalamus is densely connected with both the hippocampus and the prefrontal cortex. It is known to play a role in learning and episodic memory. Given its connectivity profile with the prefrontal cortex, it may also be expected to contribute to executive functions. Recent studies in both rodents and humans add to our understanding of anterior thalamic function, suggesting that it is a key region for allocating attention. We discuss the convergence between studies in rodents and humans, both of which imply that the anterior thalamus may play a key role in memory-guided attention. We suggest that efficient allocation of attention to memory representations requires interaction between the memory-related hippocampal and the attention related fronto-parietal networks. We further propose that the anterior thalamus is a hub that connects and modulates both systems. Copyright © 2016 Elsevier Ltd. All rights reserved.

Instalación eléctrica de una vivienda unifamiliar aislada mediante suministro de energías renovables

OpenAIRE

LOZANO VALLADOLID, FERNANDO

2015-01-01

[ES] Instalación eléctrica con grado de electrificación elevada de una vivienda unifamiliar aislada mediante suministro de energías renovables (solar, eólica, geotérmicas). Lozano Valladolid, F. (2015). Instalación eléctrica de una vivienda unifamiliar aislada mediante suministro de energías renovables. http://hdl.handle.net/10251/58751. TFGM

Anterior Segment Ischemia after Strabismus Surger

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Emine Seyhan Göçmen

2017-01-01

Full Text Available A 46-year-old male patient was referred to our clinic with complaints of diplopia and esotropia in his right eye that developed after a car accident. The patient had right esotropia in primary position and abduction of the right eye was totally limited. Primary deviation was over 40 prism diopters at near and distance. The patient was diagnosed with sixth nerve palsy and 18 months after trauma, he underwent right medial rectus muscle recession. Ten months after the first operation, full-thickness tendon transposition of the superior and inferior rectus muscles (with Foster suture was performed. On the first postoperative day, slit-lamp examination revealed corneal edema, 3+ cells in the anterior chamber and an irregular pupil. According to these findings, the diagnosis was anterior segment ischemia. Treatment with 0.1/5 mL topical dexamethasone drops (16 times/day, cyclopentolate hydrochloride drops (3 times/day and 20 mg oral fluocortolone (3 times/day was initiated. After 1 week of treatment, corneal edema regressed and the anterior chamber was clean. Topical and systemic steroid treatment was gradually discontinued. At postoperative 1 month, the patient was orthophoric and there were no pathologic symptoms besides the irregular pupil. Anterior segment ischemia is one of the most serious complications of strabismus surgery. Despite the fact that in most cases the only remaining sequel is an irregular pupil, serious circulation deficits could lead to phthisis bulbi. Clinical properties of anterior segment ischemia should be well recognized and in especially risky cases, preventative measures should be taken.

A simple method for quantitative evaluation of the missing area of the anterior glenoid in anterior instability of the glenohumeral joint

Energy Technology Data Exchange (ETDEWEB)

Barchilon, Vidal S. [Sapir Medical Center, Department of Orthopedic Surgery, Shoulder Service, Kfar-Saba (Israel); Kotz, Eugene [Sapir Medical Center, Department of Imaging, Kfar-Saba (Israel); Barchilon Ben-Av, Mercedes [Achva College of Education, Department of Mathematics, MP Shikmim (Israel); Glazer, Ernesto [Rabin Medical Center, Department of Imaging, Petah Tikva (Israel); Nyska, Meir [Sapir Medical Center, Department of Orthopedic Surgery, Kfar-Saba (Israel)

2008-08-15

The objective of this study was to describe and validate a simple method to quantitatively calculate the missing area of the anterior part of the glenoid in anterior glenohumeral instability. The calculations were developed from three-dimensional (3D)-reconstructed computerized tomography en face images of the glenoid with 'subtraction' of the humeral head in 13 consecutive cases with known anterior glenohumeral joint instability diagnosed by history and clinical examination. The inferior portion of the glenoid was approximated to a true circle whose center was determined by means of a femoral head gauge. The eroded anterior area was calculated as the ratio between the depth (a perpendicular line from the center of the circle to the eroded edge of the anterior glenoid) and the radius of the inferior glenoid circle. This data was then compared to the results obtained by two additional different methods: direct computerized measurements of the missing area and direct computerized measurement of the ratio between the radius and depth, on two dimensional computed tomography (CT) en face view reconstructions of the glenoid. We provide a function that correlates the ratio between depth and radius of the inferior glenoid circle and the area of the missing anterior glenoid. The results obtained by three different methods were comparable. Simple trigonometric calculations showed that a 5% area defect corresponds to 0.8 (12.5%) of the radius of the inferior glenoid, while a 20% area defect corresponds to 0.5 (50%) of the same radius. Using this simple method and the function provided, the eroded area of the anterior part of the glenoid in anterior glenohumeral instability can be calculated preoperatively using a 3D CT reconstruction of the glenoid with 'subtraction' of the humeral head, obviating the need for sophisticated software to obtain this critical information for preoperative decision making. (orig.)

Anterior Face Height Values in a Nigerian Population | Folaranmi ...

African Journals Online (AJOL)

... Anterior Upper Face Height 47.7 (4) mm, Anterior Total Face Height (ATFH) 108.5 (5) mm, ratio of ALFH to ATFH ALFH: ATFH 56 (4)%. Conclusion: This study provides anterior face height measurements, which will be of great significance in evaluating facial proportions andesthetics in orthodontics, orthognathic surgery, ...

AISLAMIENTO DE CLONES CON ACTIVIDAD ENDO-b-1,4-GLUCANASA A PARTIR DE UN SEGMENTO DE ADN DE 13KB DE Clostridium sp IBUN22A

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I. Roncancio-Sánchez

2006-06-01

Full Text Available La producción de combustibles, solventes y algunos productos químicos a partir de sustratos celulósicos usando microorganismos ofrece una ventaja frente a los de origen fósil. Un acercamiento prometedor ha sido la implementación de ingeniería genética utilizando genes de enzimas involucradas en la degradación de desechos celulósicos. En la última década se han generado bibliotecas genéticas para proveer enzimas celulolíticas, que hagan el proceso más rentable, lo cual permitiría aprovechar mejor residuos celulósicos disponibles. Este trabajo describe el aislamiento de dos fragmentos de ADN que expresan actividad endo-β-1,4-glucanasa, a partir de un segmento ADN de 13Kb (clon 02080-25 aislado de una biblioteca genómica de la cepa nativa Clostridium sp IBUN22A. El aislamiento de la región codificadora se realizó a través de pruebas de inducción de la actividad, análisis por restricción del segmento y de una sub-biblioteca con la enzima Sau3A I. 325 clones fueron obtenidos, de los cuales 271 tenían inserto. El tamizaje molecular de estos últimos mostró que siete clones presentaron tamaños entre 3500pb y 7000pb y el tamizaje enzimático con carboximetilcelulosa como sustrato permitió el aislamiento de los clones pBSh-37 y pBSh-26 con la actividad endo-β-1,4-glucanasa original, de tamaños de inserto de 627pb y 879pb respectivamente. Este trabajo es el punto de partida para el aislamiento de enzimas de alto potencial biotecnológico.

Consumer preferences of genetically modified foods of vegetal and animal origin in Chile Preferências dos consumidores aos alimentos geneticamente modificados de origem animal e vegetal no Chile

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Berta Schnettler

2012-03-01

Full Text Available Given the debate generated by Genetically Modified (GM foods in developed and developing countries, the aim was to evaluate the importance of determining factors in the preference of consumers in Temuco and Talca in central-southern Chile for GM foods using conjoint analysis and to determine the existence of different market segments using a survey of 800 people. Using conjoint analysis, it was established that, in general, genetic modification was a more important factor than either brand or price in the consumer's decision to purchase either food. Cluster analysis identified three segments: the largest (51.4% assigned greatest importance to brand and preferred genetically modified milk and tomato sauce; the second group (41.0% gave greatest importance to the existence of genetic manipulation and preferred non-genetically modified foods; the smallest segment (7.6% mainly valued price and preferred milk and tomato sauce with no genetic manipulation. The three segments rejected the store brand and preferred to pay less for both foods. The results are discussed based on studies conducted in developed and developing countries.Com base no debate gerado pelos alimentos geneticamente modificados (GM, tanto em países desenvolvidos como em países em desenvolvimento, a partir do uso da conjoint analysis, o objetivo foi avaliar a importância dos fatores determinantes na preferência de alimentos GM pelos consumidores das cidades de Temuco e Talca, zona Centro-Sul do Chile, e a existência de diferentes segmentos de mercado, mediante uma enquete a 800 pessoas. Utilizando conjoint analysis, se determinou, em geral, que a existência de modificação genética foi mais importante que a marca e o preço na decisão de compra de ambos os alimentos. Mediante análise cluster, se distinguiram três segmentos, o mais numeroso (51,4% deu leve maior importância à marca e preferiu leite e molho de tomate geneticamente modificado. O segundo grupo (41,0% deu

Anterior tension band plating for anterior tibial stress fractures in high-performance female athletes: a report of 4 cases

NARCIS (Netherlands)

Borens, Olivier; Sen, Milan K.; Huang, Russel C.; Richmond, Jeffrey; Kloen, Peter; Jupiter, Jesse B.; Helfet, David L.

2006-01-01

Stress fracture of the anterior tibial cortex is an extremely challenging fracture to treat, especially in the high-performance female athlete who requires rapid return to competition. Previous reports have not addressed treating these fractures in the world-class athlete with anterior plating. We

Aneurisma gigante do segmento intracavernoso da carótida interna associado a doença renal policística autossômica dominante: relato de caso Giant aneurysm of the intracavernous internal carotid artery associated with autosomal dominant polycystic kidney disease: case report

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Keven F. Ponte

2006-09-01

Full Text Available Apresenta-se o caso de mulher de 60 anos com doença renal policística autossômica dominante (DRPAD que desenvolveu quadro de cefaléia e oftalmoplegia completa à direita. A TC levantou a hipótese de um aneurisma gigante do segmento intracavernoso da carótida interna direita, o que foi confirmado pela arteriografia. Realizou-se, então, tratamento endovascular por oclusão do vaso parental com molas destacáveis no segmento supraclinóideo. A paciente evoluiu com a interrupção da cefaléia e com redução parcial da ptose e da oftalmoplegia. Neste artigo, enfatiza-se a relação entre DRPAD e aneurismas intracranianos. Comenta-se a história natural dos aneurismas originados no segmento intracavernoso da artéria carótida interna e comparam-se as opções terapêuticas no manejo destas lesões.We report the case of a 60 years-old woman with autosomal dominant polycystic kidney disease (ADPKD that presented with headache and right complete ophthalmoplegia. The CT scan raised the possibility of a giant aneurysm of the right intracavernous internal carotid artery, confirmed by angiography. The patient underwent endovascular occlusion of parent vessel with detachable coils, then she presented interruption of headache and partial recovery of ptosis and ophthalmoplegia. We emphasize the relationship between ADPKD and intracranial aneurysms. We also discuss the natural history and compare the therapeutic options for the management of giant aneurysms of the cavernous portion of the carotid artery.

Alianças estratégicas colaborativas e o ambiente institucional-regulatório em empresas de biotecnologia: segmento saúde humana na região sul do Brasil

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Israel Ferreira Júnior

2013-01-01

Full Text Available A biotecnologia é um campo de conhecimento multidisciplinar que oferece oportunidades e incentivos para a formação de parcerias e alianças, principalmente para complementação de recursos. As empresas do segmento de saúde humana tendem a desenvolver relações com outras empresas, especialmente as da área química ou farmacêutica. Em muitos casos, as empresas de biotecnologia estabelecem interações visando lidar com questões regulatórias presentes na área de saúde humana. Os aspectos regulatórios se inserem dentro do ambiente institucional do setor, no qual devem existir condições que favoreçam o desenvolvimento das empresas de biotecnologia. Em decorrência disso, o presente trabalho constitui-se de uma pesquisa qualitativa que analisou a relação entre o ambiente institucional-regulatório em biotecnologia, segmento de saúde humana, e alianças estratégicas realizadas pelas empresas deste setor. Para tanto, foram realizados estudos de casos em empresas sediadas na região sul do Brasil, cujos resultados mostraram que as alianças estratégicas realizadas sofrem influência de elementos do ambiente institucional como a legislação de biossegurança, os direitos de patentes e as fontes de financiamentos; sendo que o nível de influência irá variar conforme a atividade realizada pela empresa, o perfil do parceiro de relacionamento e o tipo de acordo estabelecido.

Application and experience of anterior vitrectomy in phacoemulsification

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Xiao-Bo Zeng

2016-02-01

Full Text Available AIM: To observe and discuss the clinical application and effect of anterior vitrectomy in phacoemulsification for the treatment of vitreous prolapse caused by posterior capsular rupture or suspensory ligament transection.METHODS:Retrospective analysis of 28 cases(35 eyeswith cataract in whom vitreous prolapse caused by posterior capsular rupture or suspensory ligament transection occurred in phacoemulsification and intraocular lens implantation and anterior vitrectomy were performed was conducted. RESULTS:Anterior vitrectomy for timely and accurate treatment for vitreous prolapse caused by posterior capsular rupture or suspensory ligament transection occurred in phacoemulsification was satisfied. CONCLUSION: Anterior vitrectomy has good curative effect for vitreous prolapse caused by posterior capsular rupture or suspensory ligament transection occurred in phacoemulsification and is effective with less severe complications.

Inferior Oblique Overaction: Anterior Transposition Versus Myectomy.

Science.gov (United States)

Rajavi, Zhale; Feizi, Mohadeseh; Behradfar, Narges; Yaseri, Mehdi; Sayanjali, Shima; Motevaseli, Tahmine; Sabbaghi, Hamideh; Faghihi, Mohammad

2017-07-01

To compare the efficacy of inferior oblique myectomy and anterior transposition for correcting inferior oblique overaction (IOOA). This retrospective study was conducted on 56 patients with IOOA who had either myectomy or anterior transposition of the inferior oblique muscle from 2010 to 2015. The authors compared preoperative and postoperative inferior oblique muscle function grading (-4 to +4) as the main outcome measure and vertical and horizontal deviation, dissociated vertical deviation (DVD), and A- and V-pattern between the two surgical groups as secondary outcomes. A total of 99 eyes of 56 patients with a mean age of 5.9 ± 6.5 years were included (47 eyes in the myectomy group and 52 eyes in the anterior transposition group). There were no differences in preoperative best corrected visual acuity, amblyopia, spherical equivalent, and primary versus secondary IOOA between the two groups. Both surgical procedures were effective in reducing IOOA and satisfactory results were similar between the two groups: 61.7% and 67.3% in the myectomy and anterior transposition groups, respectively (P = .56). After adjustment for the preoperative DVD, there was no statistically significant difference between the two groups postoperatively. The preoperative hypertropia was 6 to 14 and 6 to 18 prism diopters (PD) in the myectomy and anterior transposition groups, respectively. After surgery, no patient had a vertical deviation greater than 5 PD. Both the inferior oblique myectomy and anterior transposition procedures are effective in reducing IOOA with similar satisfactory results. DVD and hypertropia were also corrected similarly by these two surgical procedures. [J Pediatr Ophthalmol Strabismus. 2017;54(4):232-237.]. Copyright 2017, SLACK Incorporated.

Morphometric Study of the Anterior Thalamoperforating Arteries

Science.gov (United States)

Kim, Sung-Ho; Yeo, Dong-Kyu; Shim, Jae-Joon; Yoon, Seok-Mann; Chang, Jae-Chil

2015-01-01

Objective To evaluate the morphometry of the anterior thalamoperforating arteries (ATPA). Methods A microanatomical study was performed in 79 specimens from 42 formalin-fixed adult cadaver brains. The origins of the ATPAs were divided into anterior, middle, and posterior segments according to the crowding pattern. The morphometry of the ATPAs, including the premammillary artery (PMA), were examined under a surgical microscope. Results The anterior and middle segments of the ATPAs arose at mean intervals of 1.75±1.62 mm and 5.86±2.05 mm from the internal carotid artery (ICA), and the interval between these segments was a mean of 3.17±1.64 mm. The posterior segment arose at a mean interval of 2.43±1.46 mm from the posterior cerebral artery (PCA), and the interval between the middle and posterior segments was a mean of 3.45±1.39 mm. The mean numbers of perforators were 2.66±1.19, 3.03±1.84, and 1.67±0.98 in the anterior, middle, and posterior segments, respectively. The PMA originated from the middle segment in 66% of cases. A perforator-free zone was located >2 mm from the ICA in 30.4% and >2 mm from the PCA in 67.1% of cases. Conclusion Most perforators arose from the anterior and middle segments, within the anterior two-thirds of the posterior communicating artery (PCoA). The safest perforator-free zone was located closest to the PCA. These anatomical findings may be helpful to verify safety when treating lesions around the PCoA and in the interpeduncular fossa. PMID:26113962

Anatomia microcirúgica da substâcia perfurada anterior basal humana Microsurgical anatomy of the human basal anterior perforated substance

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Arlindo Alfredo Silveira D’Ávila

2006-06-01

Full Text Available A substância perfurada anterior constitui referencial na base do encéfalo. Localizada acima da bifurcação subaracnóidea da artéria carótida interna em sua porção basal e junto à artéria comunicante anterior na face inter-hemisférica, é transfixada por ramos perfurantes dirigidos aos núcleos telencefálicos corticais, cápsula interna e parte do tálamo. Por injeção intravascular de gelatina carminada, resina de Batson e látex, analisamos 50 hemisférios cerebrais humanos adultos de ambos os sexos, sob o microscópio cirúrgico. Objetivamos contribuir para a determinação da origem, número e topografia dos ramos destinados a essa região, seu curso, anastomoses e territórios de penetração. Propusemo-nos também a analisar a contribuição da artéria comunicante anterior à substância perfurada anterior. Foram encontradas variações anatômicas, incluindo anastomoses, envolvendo principalmente a artéria cerebral média e a artéria coróidea anterior. Estes conhecimentos são de interesse clínico-cirúrgico em razão da freqüência de patologias vasculares e tumorais a ela relacionadas.The anterior perforated substance (APS is a landmark in the basal forebrain. It has a basal face located above the carotid bifurcation in the subarachnoid space, and an interhemispheric one. It is the site of passage of the arteries to the caudate nucleus, putamen, internal capsule, adjacent areas of the globus pallidus and thalamus. Fifty hemispheres from twenty-five adult cadavers were obtained. The arteries were perfused with colored latex, Batson’s resin and gelatin colored with carmine. Using a surgical microscope we have determined the origin, local and number of origin from the parent vessel. The sites of penetration in the mediolateral and anteroposterior direction were also recorded. The anterior communicating artery contribution to the basal APS was reviewed. Significant vascular variations and anastomoses were encountered

Totally thrombosed giant anterior communicating artery aneurysm

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V R Roopesh Kumar

2015-01-01

Full Text Available Giant anterior communicating artery aneurysmsarerare. Apatient presented with visual dysfunction, gait ataxia and urinary incontinence. MRI showed a giant suprasellar mass.At surgery, the lesion was identified as being an aneurysm arising from the anterior communicating artery.The difficulty in preoperative diagnosis and relevant literature are reviewed.

Fiber-reinforced Composite for Chairside Replacement of Anterior ...

African Journals Online (AJOL)

Fiber-reinforced Composite for Chairside Replacement of Anterior Teeth: A Case Report. ... investigation will be required to provide additional information on the survival of directly-bonded anterior fixed prosthesis made with FRC systems.

Orbicularis oris musculomucosal flap for anterior palatal fistula

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Tiwari V

2006-01-01

Full Text Available Anterior palatal fistulae or residual anterior clefts are a frequent problem following palatoplasty. Various techniques have been used to repair such fistulae, each having its own advantages and disadvantages. We have successfully used orbicularis oris musculomucosal flap to close anterior fistula and residual clefts in 25 patients. This study shows the superiority of this flap over other techniques because of its reliable blood supply, easy elevation and transfer to fistula site and finally because it is a single-stage procedure.

Diffuse Anterior Retinoblastoma with Sarcoidosis-Like Nodule

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Koji Kitazawa

2015-12-01

Full Text Available Background: Retinoblastomas account for 4% of malignancies in children, 1-2% of which are diffuse infiltrating retinoblastomas. Diffuse anterior retinoblastoma is rare and does not involve the retina. Here, we report on a diffuse anterior retinoblastoma with large sarcoidosis-like nodules on the iris that were responsive to anti-inflammatory therapy. Case: We present a 6-year-old girl who had anterior uveitis with white nodules on the iris and posterior surface of the cornea in her right eye. The nodules initially responded well to anti-inflammatory treatment. However, anterior segment optical coherence tomography (AS-OCT showed that the nodules gradually grew, shrinking the iris. We then collected the aqueous humor for diagnosis. A biopsy revealed clusters of small cells with a high nuclear-to-cytoplasm ratio with partial rosette formation. Therefore, we diagnosed diffuse anterior retinoblastoma without retinal involvement and performed enucleation of the right eye. The histopathology demonstrated undifferentiated cells similar to those seen on the biopsy, and tumor cells invaded the iris stroma, posterior surface of the cornea, ciliary body, and sclera. After the enucleation, she underwent chemotherapy and remains alive. Conclusion: A differential diagnosis of retinoblastoma should be considered when white nodules refractory to anti-inflammatory therapy occur in the eye, even in the absence of obvious retinal masses. AS-OCT findings are useful in assessing retinoblastoma.

URETHROPLASTY FOR COMPLICATED ANTERIOR URETHRAL STRICTURES.

Science.gov (United States)

Aoki, Katsuya; Hori, Shunta; Morizawa, Yosuke; Nakai, Yasushi; Miyake, Makito; Anai, Satoshi; Torimoto, Kazumasa; Yoneda, Tatsuo; Tanaka, Nobumichi; Yoshida, Katsunori; Fujimoto, Kiyohide

2016-01-01

(Objectives) To compare efficacy and outcome of urethroplasty for complicated anterior urethral strictures. (Methods) Twelve patients, included 3 boys, with anterior urethral stricture underwent urethroplasty after the failure of either urethral dilatation or internal urethrotomy. We evaluated pre- and post-operative Q max and surgical outcome. (Results) Four patients were treated with end-to-end anastomosis, included a case of bulbar urethral elongation simultaneously, one patient was treated with augmented anastomotic urethroplasty, three patients were treated with onlay urethroplasty with prepucial flap, one patient was treated with tubed urethroplasty with prepucial flap (Ducket procedure) and three patients were treated with onlay urethroplasty with buccal mucosal graft. Postoperative Qmax improved in all patients without major complications and recurrence during follow-up periods ranging from 17 to 102 months (mean 55 months). (Conclusions) Urethroplasty is an effective therapeutic procedure for complicated anterior urethral stricture.

Anterior fixation of the axis.

Science.gov (United States)

Traynelis, Vincent C; Fontes, Ricardo B V

2010-09-01

Although anterior fixation of the axis is not commonly performed, plate fixation of C2 is an important technique for treating select upper cervical traumatic injuries and is also useful in the surgical management of spondylosis. To report the technique and outcomes of C2 anterior plate fixation for a series of patients in which the majority presented with symptomatic degenerative spondylosis. Forty-six consecutive patients underwent single or multilevel fusions over a 7-year period; 30 of these had advanced degenerative disease manifested by myelopathy or deformity. Exposure was achieved with rostral extension of the standard anterior cervical exposure via careful soft tissue dissection, mobilization of the superior thyroid artery, and the use of a table-mounted retractor. It was not necessary to remove the submandibular gland, section the digastric muscle, or make additional skin incisions. Screws were placed an average of 4.6 mm (+/- 2.3 mm) from the inferior C2 endplate with a mean sagittal trajectory of 15.7 degrees (+/- 7.6 degrees). Short- and long-term procedure-related mortality was 4.4%, and perioperative morbidity was 8.9%. Patients remained intubated an average of 2.5 days following surgery. Dysphagia was initially reported by 15.2% of patients but resolved by the 8th postoperative week in all patients. Arthrodesis was achieved in all patients available for long-term follow-up. Multilevel fusions were not associated with longer hospitalization or morbidity. Anterior plate fixation of the axis for degenerative disease can be accomplished with acceptable morbidity employing an extension of the standard anterolateral route.

Anterior knee pain

Energy Technology Data Exchange (ETDEWEB)

LLopis, Eva [Hospital de la Ribera, Alzira, Valencia (Spain) and Carretera de Corbera km 1, 46600 Alzira Valencia (Spain)]. E-mail: ellopis@hospital-ribera.com; Padron, Mario [Clinica Cemtro, Ventisquero de la Condesa no. 42, 28035 Madrid (Spain)]. E-mail: mario.padron@clinicacemtro.com

2007-04-15

Anterior knee pain is a common complain in all ages athletes. It may be caused by a large variety of injuries. There is a continuum of diagnoses and most of the disorders are closely related. Repeated minor trauma and overuse play an important role for the development of lesions in Hoffa's pad, extensor mechanism, lateral and medial restrain structures or cartilage surface, however usually an increase or change of activity is referred. Although the direct relation of cartilage lesions, especially chondral, and pain is a subject of debate these lesions may be responsible of early osteoarthrosis and can determine athlete's prognosis. The anatomy and biomechanics of patellofemoral joint is complex and symptoms are often unspecific. Transient patellar dislocation has MR distinct features that provide evidence of prior dislocation and rules our complication. However, anterior knee pain more often is related to overuse and repeated minor trauma. Patella and quadriceps tendon have been also implicated in anterior knee pain, as well as lateral or medial restraint structures and Hoffa's pad. US and MR are excellent tools for the diagnosis of superficial tendons, the advantage of MR is that permits to rule out other sources of intraarticular derangements. Due to the complex anatomy and biomechanic of patellofemoral joint maltracking is not fully understood; plain films and CT allow the study of malalignment, new CT and MR kinematic studies have promising results but further studies are needed. Our purpose here is to describe how imaging techniques can be helpful in precisely defining the origin of the patient's complaint and thus improve understanding and management of these injuries.

Anterior knee pain

International Nuclear Information System (INIS)

LLopis, Eva; Padron, Mario

2007-01-01

Anterior knee pain is a common complain in all ages athletes. It may be caused by a large variety of injuries. There is a continuum of diagnoses and most of the disorders are closely related. Repeated minor trauma and overuse play an important role for the development of lesions in Hoffa's pad, extensor mechanism, lateral and medial restrain structures or cartilage surface, however usually an increase or change of activity is referred. Although the direct relation of cartilage lesions, especially chondral, and pain is a subject of debate these lesions may be responsible of early osteoarthrosis and can determine athlete's prognosis. The anatomy and biomechanics of patellofemoral joint is complex and symptoms are often unspecific. Transient patellar dislocation has MR distinct features that provide evidence of prior dislocation and rules our complication. However, anterior knee pain more often is related to overuse and repeated minor trauma. Patella and quadriceps tendon have been also implicated in anterior knee pain, as well as lateral or medial restraint structures and Hoffa's pad. US and MR are excellent tools for the diagnosis of superficial tendons, the advantage of MR is that permits to rule out other sources of intraarticular derangements. Due to the complex anatomy and biomechanic of patellofemoral joint maltracking is not fully understood; plain films and CT allow the study of malalignment, new CT and MR kinematic studies have promising results but further studies are needed. Our purpose here is to describe how imaging techniques can be helpful in precisely defining the origin of the patient's complaint and thus improve understanding and management of these injuries

Congenital anterior urethral diverticulum

International Nuclear Information System (INIS)

Jung, Hyun Sub; Chung, Young Sun; Suh, Chee Jang; Won, Jong Jin

1985-01-01

Two cases of congenital anterior urethral diverticular which have occurred in a 4 year old and one month old boy are presented. Etiology, diagnostic procedures, and its clinical results are briefly reviewed

A distribuição física como recurso estratégico na obtenção de vantagem competitiva no segmento de bens de consumo de massa no brasil

OpenAIRE

Almeida, Marcio Vieira de

2012-01-01

Essa dissertação tem como objetivo entender quais os recursos inerentes a distribuição física podem levar os fabricantes de produtos de consumo de massa, especificamente no segmento de produtos de limpeza e afins, a obterem vantagem competitiva. A pesquisa foi realizada a partir das percepções de fabricantes e varejistas sobre esses serviços. Como fundamentação teórica utilizou-se a visão baseada em recursos (VBR), incluídos os conceitos de valor, vantagem competitiva e estraté...

Aceleração e tempo de duração de impacto em segmentos corporais do judoca durante a realização de ukemi em diferentes tipos de tatames

OpenAIRE

Santos, Saray G. dos; Melo, Sebastião I.L.; Heidrich, Roberto M.; Moro, António R.P.; Reis, Diogo C.

2007-01-01

Este estudo, de cunho exploratório, objectivou verificar e comparar as acelerações e os tempos de duração dos impactos sofridos por diferentes segmentos corporais de judocas (punho, quadril e tornozelo) através de quedas em diferentes tipos de tatames. Para a realização do estudo foram seleccionados sete tipos diferentes de tatames (seis sintéticos e um de palha), assim como, dois judocas para executarem a técnica "Ipon-Seoi-Nague" e respectivo amortecimento "Zempo-Kaiten-Ukemi". Como instrum...

Anterior Visceral Endoderm SMAD4 Signaling Specifies Anterior Embryonic Patterning and Head Induction in Mice

Science.gov (United States)

Li, Cuiling; Li, Yi-Ping; Fu, Xin-Yuan; Deng, Chu-Xia

2010-01-01

SMAD4 serves as a common mediator for signaling of TGF-β superfamily. Previous studies illustrated that SMAD4-null mice die at embryonic day 6.5 (E6.5) due to failure of mesoderm induction and extraembryonic defects; however, functions of SMAD4 in each germ layer remain elusive. To investigate this, we disrupted SMAD4 in the visceral endoderm and epiblast, respectively, using a Cre-loxP mediated approach. We showed that mutant embryos lack of SMAD4 in the visceral endoderm (Smad4Co/Co;TTR-Cre) died at E7.5-E9.5 without head-fold and anterior embryonic structures. We demonstrated that TGF-β regulates expression of several genes, such as Hex1, Cer1, and Lim1, in the anterior visceral endoderm (AVE), and the failure of anterior embryonic development in Smad4Co/Co;TTR-Cre embryos is accompanied by diminished expression of these genes. Consistent with this finding, SMAD4-deficient embryoid bodies showed impaired responsiveness to TGF-β-induced gene expression and morphological changes. On the other hand, embryos carrying Cre-loxP mediated disruption of SMAD4 in the epiblasts exhibited relatively normal mesoderm and head-fold induction although they all displayed profound patterning defects in the later stages of gastrulation. Cumulatively, our data indicate that SMAD4 signaling in the epiblasts is dispensable for mesoderm induction although it remains critical for head patterning, which is significantly different from SMAD4 signaling in the AVE, where it specifies anterior embryonic patterning and head induction. PMID:20941375

Nonnecrotizing anterior scleritis mimicking orbital inflammatory disease

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Lynch MC

2013-08-01

Full Text Available Michelle Chen Lynch,1 Andrew B Mick21Optometry Clinic, Ocala West Veterans Affairs Specialty Clinic, Ocala, FL, USA; 2Eye Clinic, San Francisco VA Medical Center, San Francisco, CA, USABackground: Anterior scleritis is an uncommon form of ocular inflammation, often associated with coexisting autoimmune disease. With early recognition and aggressive systemic therapy, prognosis for resolution is good. The diagnosis of underlying autoimmune disease involves a multidisciplinary approach.Case report: A 42-year-old African American female presented to the Eye Clinic at the San Francisco Veteran Affairs Medical Center, with a tremendously painful left eye, worse on eye movement, with marked injection of conjunctiva. There was mild swelling of the upper eyelid. Visual acuity was unaffected, but there was a mild red cap desaturation. The posterior segment was unremarkable. The initial differential diagnoses included anterior scleritis and orbital inflammatory disease. Oral steroid treatment was initiated with rapid resolution over a few days. Orbital imaging was unremarkable, and extensive laboratory work-up was positive only for antinuclear antibodies. The patient was diagnosed with idiopathic diffuse, nonnecrotizing anterior scleritis and has been followed for over 5 years without recurrence. The rheumatology clinic monitors the patient closely, as suspicion remains for potential arthralgias including human leukocyte antigen-B27-associated arthritis, lupus-associated arthritis, seronegative rheumatoid arthritis, recurrent juvenile idiopathic arthritis, and scleroderma, based on her constitutional symptoms and clinical presentation, along with a positive anti-nuclear antibody lab result.Conclusion: Untreated anterior scleritis can progress to formation of cataracts, glaucoma, uveitis, corneal melting, and posterior segment disease with significant risk of vision loss. Patients with anterior scleritis must be aggressively treated with systemic anti

Anterior cruciate ligament tears: MRI versus arthroscopy

International Nuclear Information System (INIS)

Tosch, U.; Felix, R.; Schauwecker, W.; Dreithaler, B.

1992-01-01

Because of suspected rupture of the anterior cruciate ligament sixteen acute traumatised patients were investigated by MR and arthroscopy. The MR diagnosis of a lesion of the anterior cruciate ligament proved to be correct by arthroscopy in fifteen of sixteen cases. Diagnostic criteria for lesions of the anterior cruciate ligament were: increased signal intensity in T 1 - and T 2 weighted images, increased volume and discontinuity of ligamentous structures. Additional MR findings of meniscal tears were correct in three of four cases laterally and in four of four cases medially. Femoral cartilage lesions were correctly identified by MR in three cases. MR normal findings proved to be correct by arthroscopy in another five cases. (orig.) [de

Establecer las condiciones necesarias para procesar materiales termoestables mediante el rotomoldeo

OpenAIRE

Pérez O., Daniel

2009-01-01

En este trabajo se establecieron las condiciones necesarias para procesar materiales termoestables mediante la técnica de rotomoldeo, comenzando por el estudio de las condiciones de curado y viscosidad relativa, donde se evidenció una relación directa del porcentaje de catalizador en función del tiempo y la temperatura de polimerización.

Anterior capsular rupture following blunt ocular injury

Science.gov (United States)

Gremida, Anas; Kassem, Iris; Traish, Aisha

2011-01-01

Summary A 10-year-old boy suffered a large, oblique anterior capsular tear following blunt injury to his right eye. The boy was followed daily for hyphema resolution and progressive traumatic cataract formation. After the hyphema had resolved, the lens was removed using an anterior approach and an intraocular lens was placed with excellent visual outcome. PMID:23362402

ARTHROSCOPIC TREATMENT OF ANTERIOR IMPINGEMENT IN THE ANKLE

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Martin Mikek

2004-12-01

Full Text Available Background. Anterior soft tissue impingement is a common cause of chronic pain in the ankle. The preferred method of operative treatment is an arthroscopic excision of hypertrophic fibrous and synovial tissue in the anterior part of the ankle joint.Methods. We present the results of arthroscopic treatment of anterior ankle impingement in group of 14 patients.Results. Subjective improvement after the procedure was observed in all patients and 13 of them (93% were without any symptoms after the operation. One patient reported of intermittent pain, especially when walking on uneven grounds.Conclusions. We conclude that arthroscopic excision of hypertrophic synovial tissue in the anterior part of the ankle which causes the symptoms of impingement is a minimally invasive procedure that is both safe and reliable. When used for appropriate indications, an improvement can be expected in over 90% of patients.

[The "window" surgical exposure strategy of the upper anterior cervical retropharyngeal approach for anterior decompression at upper cervical spine].

Science.gov (United States)

Wu, Xiang-Yang; Zhang, Zhe; Wu, Jian; Lü, Jun; Gu, Xiao-Hui

2009-11-01

To investigate the "window" surgical exposure strategy of the upper anterior cervical retropharyngeal approach for the exposure and decompression and instrumentation of the upper cervical spine. From Jan. 2000 to July 2008, 5 patients with upper cervical spinal injuries were treated by surgical operation included 4 males and 1 female with and average age of 35 years old ranging from 16 to 68 years. There were 2 cases of Hangman's fractures (type II ), 2 of C2.3 intervertebral disc displacement and 1 of C2 vertebral body tuberculosis. All patients underwent the upper cervical anterior retropharyngeal approach through the "window" between the hypoglossal nerve and the superior laryngeal nerve and pharynx and carotid artery. Two patients of Hangman's fractures underwent the C2,3 intervertebral disc discectomy, bone graft fusion and internal fixation. Two patients of C2,3 intervertebral disc displacement underwent the C2,3 intervertebral disc discectomy, decompression bone graft fusion and internal fixation. One patient of C2 vertebral body tuberculosis was dissected and resected and the focus and the cavity was filled by bone autografting. C1 anterior arch to C3 anterior vertebral body were successful exposed. Lesion resection or decompression and fusion were successful in all patients. All patients were followed-up for from 5 to 26 months (means 13.5 months). There was no important vascular and nerve injury and no wound infection. Neutral symptoms was improved and all patient got successful fusion. The "window" surgical exposure surgical technique of the upper cervical anterior retropharyngeal approach is a favorable strategy. This approach strategy can be performed with full exposure for C1-C3 anterior anatomical structure, and can get minimally invasive surgery results and few and far between wound complication, that is safe if corresponding experience is achieved.

Fibrinous anterior uveitis following laser in situ keratomileusis

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Parmar Pragya

2009-01-01

Full Text Available A 29-year-old woman who underwent laser in situ keratomileusis (LASIK for myopic astigmatism in both eyes presented with severe pain, photophobia and decreased visual acuity in the left eye eight days after surgery. Examination revealed severe anterior uveitis with fibrinous exudates in the anterior chamber, flap edema and epithelial bullae. Laboratory investigations for uveitis were negative and the patient required systemic and intensive topical steroids with cycloplegics to control the inflammation. This case demonstrates that severe anterior uveitis may develop after LASIK and needs prompt and vigorous management for resolution.

A Rare Nasal Bone Fracture: Anterior Nasal Spine Fracture

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Egemen Kucuk

2014-04-01

Full Text Available Anterior nasal spine fractures are a quite rare type of nasal bone fractures. Associated cervical spine injuries are more dangerous than the nasal bone fracture. A case of the anterior nasal spine fracture, in a 18-year-old male was presented. Fracture of the anterior nasal spine, should be considered in the differential diagnosis of the midface injuries and also accompanying cervical spine injury should not be ignored.

Automatic anterior chamber angle assessment for HD-OCT images.

Science.gov (United States)

Tian, Jing; Marziliano, Pina; Baskaran, Mani; Wong, Hong-Tym; Aung, Tin

2011-11-01

Angle-closure glaucoma is a major blinding eye disease and could be detected by measuring the anterior chamber angle in the human eyes. High-definition OCT (Cirrus HD-OCT) is an emerging noninvasive, high-speed, and high-resolution imaging modality for the anterior segment of the eye. Here, we propose a novel algorithm which automatically detects a new landmark, Schwalbe's line, and measures the anterior chamber angle in the HD-OCT images. The distortion caused by refraction is corrected by dewarping the HD-OCT images, and three biometric measurements are defined to quantitatively assess the anterior chamber angle. The proposed algorithm was tested on 40 HD-OCT images of the eye and provided accurate measurements in about 1 second.

Reconstruction of the Anterior Cruciate Ligament : Alternative Strategies

NARCIS (Netherlands)

van Eijk, F.

2009-01-01

This thesis describes the long-term results of reconstruction of the anterior cruciate ligament with an allograft. Due to the poor results found, further studies were performed to investigate alternative strategies for reconstruction of the anterior cruciate ligament in the field of tissue

Measurements of anterior chamber depth, white-to-white distance, anterior chamber angle, and pupil diameter using two Scheimpflug imaging devices

Directory of Open Access Journals (Sweden)

Alberto Domínguez-Vicent

2014-08-01

Full Text Available Purpose: To compare the ocular anterior chamber depth, white-to-white distance, anterior chamber angle, and pupil diameter, as measured with two different Scheimpflug imaging devices. Methods: This transversal study included 80 right eyes from 80 subjects aged from 20 to 40 years. Their spherical equivalents ranged from -4.25 to +1.00 diopters (D. Each eye's anterior chamber depth, white-to-white distance, anterior chamber angle, and pupil diameter, were measured for far vision using both the Galilei G4 (double Scheimpflug camera and the Pentacam HR (single Scheimpflug camera systems. Results: Mean anterior chamber depths were calculated as 3.12 ± 0.23 mm and 3.19 ± 0.24 mm when measured with the Galilei G4 and the Pentacam HR, respectively. The mean white-to-white distance measured was 11.84 ± 0.31 mm and 11.90 ± 0.43 mm when measured with the Galilei G4 and the Pentacam HR, respectively. Mean pupil diameters were measured as 3.22 ± 0.58 mm and 3.22 ± 0.52 mm when measured with the Galilei G4 and the Pentacam HR, respectively. Finally, the mean anterior chamber angle was 34.30 ± 2.86 degrees when it was measured with the Galilei G4, and 39.26 ± 2.85 degrees when measured with the Pentacam HR. A comparative analysis revealed that the Galilei G4 yielded a significantly lower (P0.05 for both devices were obtained for the white-to-white distance measurements. Conclusion: The Galilei G4 and Pentacam HR Scheimpflug systems cannot be used interchangeably because they produce significant measurement differences.

Clinical commissioning of an in vivo range verification system for prostate cancer treatment with anterior and anterior oblique proton beams

Science.gov (United States)

Hoesl, M.; Deepak, S.; Moteabbed, M.; Jassens, G.; Orban, J.; Park, Y. K.; Parodi, K.; Bentefour, E. H.; Lu, H. M.

2016-04-01

The purpose of this work is the clinical commissioning of a recently developed in vivo range verification system (IRVS) for treatment of prostate cancer by anterior and anterior oblique proton beams. The IRVS is designed to perform a complete workflow for pre-treatment range verification and adjustment. It contains specifically designed dosimetry and electronic hardware and a specific software for workflow control with database connection to the treatment and imaging systems. An essential part of the IRVS system is an array of Si-diode detectors, designed to be mounted to the endorectal water balloon routinely used for prostate immobilization. The diodes can measure dose rate as function of time from which the water equivalent path length (WEPL) and the dose received are extracted. The former is used for pre-treatment beam range verification and correction, if necessary, while the latter is to monitor the dose delivered to patient rectum during the treatment and serves as an additional verification. The entire IRVS workflow was tested for anterior and 30 degree inclined proton beam in both solid water and anthropomorphic pelvic phantoms, with the measured WEPL and rectal doses compared to the treatment plan. Gafchromic films were also used for measurement of the rectal dose and compared to IRVS results. The WEPL measurement accuracy was in the order of 1 mm and after beam range correction, the dose received by the rectal wall were 1.6% and 0.4% from treatment planning, respectively, for the anterior and anterior oblique field. We believe the implementation of IRVS would make the treatment of prostate with anterior proton beams more accurate and reliable.

Pigment dispersion syndrome masquerading as acute anterior uveitis.

Science.gov (United States)

Gonzalez-Gonzalez, Luis Alonso; Rodríguez-García, Alejandro; Foster, C Stephen

2011-06-01

Signs and symptoms of pigment dispersion may be confused with those of acute anterior uveitis. This case series is intended to aid the ophthalmologist in the clinical differentiation between these two disorders. The authors present a series of 6 patients with pigment dispersion who were initially diagnosed as having acute anterior uveitis and treated with anti-inflammatory medication, including corticosteroids. The patients were referred for a second opinion due to poor or no response to therapy and were found to have pigment dispersion instead of uveitis. Symptoms of pigment dispersion may consist of blurred vision, redness, ocular pain, and photophobia, all of which are also symptoms of acute anterior uveitis. These symptoms, plus the fact that pigment floating in the aqueous humor can be mistaken for inflammation, make diagnosis challenging. Moreover, the possible co-existence of true anterior uveitis and pigment dispersion makes the diagnosis and treatment more difficult.

Direct composite restoration of permanent anterior teeth uncomplicated crown fractures

Directory of Open Access Journals (Sweden)

Ashley Evans Nicholas

2018-01-01

Full Text Available An uncomplicated crown fracture is a fracture that involves only the tooth enamel or the dentin and tooth enamel without any damage or exposure to the pulp. Crown fracture of the anterior teeth usually caused by traumatic forces such as falls, accidents, violence, or sports activities. Traumatic injuries of the oral region frequently involve the anterior teeth, especially maxillary incisors due to the anatomic factors which may affect the functional and aesthetical values of the teeth. The objective of this literature study was to know more about uncomplicated crown fracture of the anterior teeth and its restoration. This research was a literature study performed by researching, highlighting various interesting facts and compiling the relevant published journals. The most common and ideal direct restoration of the anterior teeth was the composite resin restoration. The anterior teeth restoration was considered to be a complex and challenging case to solves due to the fact that besides reconstructing the tooth and regaining the function, the aesthetical aspect was also becoming the main objectives. The permanent anterior teeth uncomplicated crown fracture was the most common case of tooth fractures which was mainly caused by traumatic injuries such as falls, accidents, excessive forces, violence, and also sports activities. Dental injuries of the anterior teeth also affected the aesthetical properties and the function of the tooth. Composite resin restoration was able to performed directly on the permanent anterior teeth uncomplicated crown fracture.

Influência do suporte e fixação anterior na resistência mecânica do fixador interno vertebral Influencia del soporte y de la fijación anterior sobre la resistencia mecánica del fijador interno vertebralartrodesis cervical anterior por hernia del disco cervica The influence of anterior reconstruction and fixation on the mechanical performance of an internal fixator

Directory of Open Access Journals (Sweden)

Gisele Cristina Ale dos Santos

2009-03-01

Full Text Available OBJETIVO: avaliar a influência da reconstrução e fixação anterior no desempenho mecânico do fixador interno da coluna vertebral. MÉTODOS: foram formados três grupos experimentais de acordo com a reconstrução e fixação anterior: grupo I -sem suporte anterior; grupo II - com suporte anterior; grupo III - com suporte e fixação anterior. Os corpos de prova foram submetidos a ensaios mecânicos de flexo-compressão, flexão lateral e torção, realizados em máquina de universal de ensaios, tendo sido realizados dez ensaios para cada modalidade (flexo-compressão, flexão lateral e torção em cada grupo experimental, perfazendo um total de 90 ensaios mecânicos. As propriedades mecânicas estudadas foram: o momento-fletor, o torque e a rigidez obtidos a partir da curva carga x deflexão de cada ensaio mecânico. RESULTADOS: observou-se que a colocação do suporte e da fixação anterior aumentou a resistência mecânica nos ensaios de flexo-compressão. Nos ensaios de flexão lateral observou-se aumento da resistência mecânica somente com a fixação anterior. CONCLUSÃO: nos ensaios de torção o suporte anterior e a fixação anterior não aumentaram a resistência mecânica do sistema de fixação vertebral.OBJETIVO: evaluar la influencia de la reconstrucción y fijación anterior en el desempeño mecánico del fijador interno de la columna vertebral. MÉTODOS: fueron formados tres grupos experimentales de acuerdo com la reconstrucción y fijación anterior: grupo I- sin soporte anterior, grupo II- con soporte anterior y grupo III- con soporte y fijación anterior. Los cuerpos de prueba fueron sometidos a ensayos mecánicos de flexocompresión, flexión lateral y torción, realizados en la máquina universal de ensayos, habiéndose realizados 10 ensayos para cada modalidad (flexocompresión, flexión lateral y torción en cada grupo experimental,con untotal de 90 ensayos mecánicos. Las propiedades mecánicas estudiadas fueron el

[Two cases of Vogt-Koyanagi-Harada disease presenting shallow anterior chamber].

Science.gov (United States)

Takemoto, Daisuke; Ijiri, Shigeyuki; Shimizu, Michiharu; Higashide, Tomomi; Sugiyama, Kazuhisa

2015-05-01

We report two cases of Vogt-Koyanagi-Harada disease (VKH) in which shallow anterior chambers were improved after steroid pulse therapy. The patients were women aged 65 and 72. They had headaches, decreased visual acuity and shallow anterior chamber in both eyes. There was no inflammation in the anterior chamber. Ultrasound biomicroscopy (UBM) showed ciliary edema, ciliochoroidal detachment, and angle closure. One case showed high intraocular pressure (IOP), and a diagnosis of acute primary angle closure was made. Although cataract surgery was performed in the left eye, postoperative optical coherence tomography (OCT) revealed serous retinal detachment in both eyes. The shallow anterior chamber and UBM findings were improved and serous retinal detachment disappeared after steroid pulse therapy in both cases. VKH may cause shallow anterior chamber and angle closure. The inflammatory changes of VKH in the anterior segment, i. e. ciliary edema and ciliochoroidal detachment, may exacerbate the shallow anterior chambers and narrow angles and result in an acute increase in IOP in eyes with short axial length. VKH associated with shallow anterior chamber may be misdiagnosed as acute primary angle closure. For differential diagnosis, examinations of the ocular fundus including OCT are useful.

¿Trombosis muy tardía de stent coronario? Más allá de la angiografía

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Teresa Alvarado

2016-03-01

Full Text Available Varón de 60 años con antecedentes de hipertensión arterial, dislipemia y cardiopatía isquémica, esta última con debut 8 años antes por angina inestable; en ese momento se realizó coronariografía que mostró enfermedad de la coronaria derecha (CD: un vaso ectásico, con importante remodelado positivo y lesiones graves en su segmento distal, y en el proximal de la rama posterolateral. Se trató mediante implante de dos stents no farmacoactivos. Desde entonces el paciente permaneció asintomático, con buen control de los factores de riesgo cardiovascular.

CREACIÓN DE UN METAVERSO EN OPENSIM PARA LA UNIVERSIDAD DISTRITAL DENTRO DE LA RED RITA-UD

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Nicolás Torres Vallejo

2013-01-01

Full Text Available Este paper contempla el montaje de un segmento de red inalámbrico para la red RITA-UD con el fin de brindar acceso a contenidos multimedia a través de un mundo virtual creado en OPENSIM. Los contenidos de las emisiones de streaming se encuentran almacenados en un servidor ubicado en el centro de computación de alto desempeño, CECAD. Al tiempo  que se realizaron pruebas de streaming multicast, se capturaron dichas transmisiones mediante el sniffer de paquetes WireShark con el fin de determinar parámetros de QoS que caractericen el canal.

Universitarios en Brasil: ascenso social, exigencias y manipulación

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Hugo R Lovisolo

2014-06-01

Full Text Available El objetivo central de este artículo es describir la ampliación de la participación de los segmentos de clase media baja y de clase baja en la enseñanza superior, en Brasil, especialmente, mediante inserción en el campo particular o privado en sus relaciones con las condiciones de inserción y las formas de elaboración de una experiencia de tipo especial  realizadas por los nuevos “universitarios”. Sobre el punto de vista metodológico, la experiencia participativa del proceso será el eje central, aliada con estudios cuantitativos y datos censales oficiales. 

Molecular Age-Related Changes in the Anterior Segment of the Eye

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Luis Fernando Hernandez-Zimbron

2017-01-01

Full Text Available Purpose. To examine the current knowledge about the age-related processes in the anterior segment of the eye at a biological, clinical, and molecular level. Methods. We reviewed the available published literature that addresses the aging process of the anterior segment of the eye and its associated molecular and physiological events. We performed a search on PubMed, CINAHL, and Embase using the MeSH terms “eye,” “anterior segment,” and “age.” We generated searches to account for synonyms of these keywords and MESH headings as follows: (1 “Eye” AND “ageing process” OR “anterior segment ageing” and (2 “Anterior segment” AND “ageing process” OR “anterior segment” AND “molecular changes” AND “age.” Results. Among the principal causes of age-dependent alterations in the anterior segment of the eye, we found the mutation of the TGF-β gene and loss of autophagy in addition to oxidative stress, which contributes to the pathogenesis of degenerative diseases. Conclusions. In this review, we summarize the current knowledge regarding some of the molecular mechanisms related to aging in the anterior segment of the eye. We also introduce and propose potential roles of autophagy, an important mechanism responsible for maintaining homeostasis and proteostasis under stress conditions in the anterior segment during aging.

Current approach in diagnosis and management of anterior uveitis

OpenAIRE

Agrawal, Rupesh V; Murthy, Somasheila; Sangwan, Virender; Biswas, Jyotirmay

2010-01-01

Uveitis is composed of a diverse group of disease entities, which in total has been estimated to cause approximately 10% of blindness. Uveitis is broadly classified into anterior, intermediate, posterior and panuveitis based on the anatomical involvement of the eye. Anterior uveitis is, however, the commonest form of uveitis with varying incidences reported in worldwide literature. Anterior uveitis can be very benign to present with but often can lead to severe morbidity if not treated...

Reconstruction of the Anterior Cruciate Ligament : Alternative Strategies

OpenAIRE

van Eijk, F.

2009-01-01

This thesis describes the long-term results of reconstruction of the anterior cruciate ligament with an allograft. Due to the poor results found, further studies were performed to investigate alternative strategies for reconstruction of the anterior cruciate ligament in the field of tissue engineering.

Management of anterior dental crossbite with removable appliances

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Ayca Tuba Ulusoy

2013-01-01

Full Text Available This case report describes the treatment of an 8-year-old girl with anterior dental crossbite using a series of removable appliances to bring the teeth into a normal position. Clinical presentation and intervention: A removable acrylic appliance with a bite plate incorporating a screw was used to correct the anterior dental crossbite and align the incisors. The subsequent eruption of the maxillary left lateral incisor on the palatinal side was treated with a second acrylic plate incorporating a labiolingual spring. After an 8-month period, the anterior crossbite involving multiple incisors was corrected.

Optical coherence tomography in anterior segment imaging

Science.gov (United States)

Kalev-Landoy, Maya; Day, Alexander C.; Cordeiro, M. Francesca; Migdal, Clive

2008-01-01

Purpose To evaluate the ability of optical coherence tomography (OCT), designed primarily to image the posterior segment, to visualize the anterior chamber angle (ACA) in patients with different angle configurations. Methods In a prospective observational study, the anterior segments of 26 eyes of 26 patients were imaged using the Zeiss Stratus OCT, model 3000. Imaging of the anterior segment was achieved by adjusting the focusing control on the Stratus OCT. A total of 16 patients had abnormal angle configurations including narrow or closed angles and plateau irides, and 10 had normal angle configurations as determined by prior full ophthalmic examination, including slit-lamp biomicroscopy and gonioscopy. Results In all cases, OCT provided high-resolution information regarding iris configuration. The ACA itself was clearly visualized in patients with narrow or closed angles, but not in patients with open angles. Conclusions Stratus OCT offers a non-contact, convenient and rapid method of assessing the configuration of the anterior chamber. Despite its limitations, it may be of help during the routine clinical assessment and treatment of patients with glaucoma, particularly when gonioscopy is not possible or difficult to interpret. PMID:17355288

Ensayo no destructivo de soldaduras en pernos conectores mediante inspección acústica

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Aznar, A.

2012-09-01

Full Text Available Headed studs are nowadays the standard steel-concrete connectors because of their competitive advantages. Firstly, they provide a high degree of safety thanks to semiautomatic electric arc welding. These welds are not suitable for typical non-destructive tests. The analytical study comprises several models. The first vibration modes have been obtained. The experimental research has developed first the measurement of the natural frequencies of 28 headed-studs in the sonic range. Then they have been tested by non-destructive and destructive tests. Finally theirs tests have been compared with their respective frequency measurements. A clear relationship between the measured frequencies and the lack of penetration of the welds has been established, that confirms the analytical prediction of this effect of the internal weld imperfections. Therefore, the feasibility of simple and absolutely non-destructive tests of welded studs by in site measurement of natural frequencies in the sonic range has been clearly established in this work.

Los pernos conectores aportan múltiples ventajas de uso, entre las que se encuentra el elevado margen de seguridad que ofrecen sus soldaduras ejecutadas mediante arco eléctrico. Estas soldaduras, aunque ampliamente fiables, son difícilmente comprobadas mediante ensayos no destructivos. El presente estudio plantea la inspección de soldaduras de pernos conectores mediante su espectro acústico. Analíticamente, la investigación se ha centrado en el cálculo de los primeros modos propios de vibración. Experimentalmente se han medido las frecuencias propias de resonancia de 28 pernos, en los que posteriormente se han llevado a cabo ensayos tanto no destructivos como destructivos. Se ha obtenido, tanto teórica como experimentalmente, una relación entre la frecuencia de vibración de los pernos conectores y la calidad de la soldadura. Por ello se verifica la posibilidad de inspección de estas

La prueba obtenida mediante coacción y su inadmisibilidad ante la Corte Interamericana de Derechos Humanos

OpenAIRE

Paúl Díaz, Álvaro

2016-01-01

La Corte Interamericana de Derechos Humanos efectúa un amplio análisis probatorio para determinar la ocurrencia de violaciones de derechos humanos. Ella tiende a ser muy flexible con la admisión de la prueba, sin perjuicio de ello estaría obligada a excluir confesiones obtenidas mediante coacción. En relación con esto, la Corte ha hecho afirmaciones que parecen propiciar la exclusión de toda prueba obtenida mediante coerción, y dar pie a la doctrina del fruto de árbol envenenado. Este artícul...

O diálogo e a participação em um conselho de saúde em Santa Catarina, Brasil

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Águeda Wendhausen

2002-12-01

Full Text Available Ainda que costumemos acreditar que participação implica necessariamente em diálogo, a prática concreta nos mostra que seus caminhos podem ser divergentes. Neste estudo, realizado em um Conselho de Saúde de um município catarinense foram analisados, a partir de 39 atas de reuniões, os mecanismos e estratégias discursivas que aparecem como "obstrutores" do diálogo, que como constatamos, permanece ausente apesar de se tratar de uma instância participativa. Dentre essas estratégias foram isoladas algumas expressões que Umberto Eco chamou de "hipercodificações", cuja função no conselho parece ser a de fechar qualquer debate. As hipercodificações encontradas foram expressões do jargão técnico, administrativo e político. Mediante essas estratégias discursivas utilizadas, observamos que a linguagem é usada como um ardil que fecha as possibilidades de interlocução democrática, truncando o diálogo. Desse modo, há pouca transitividade nos poderes dos diversos segmentos no conselho estudado, os quais acabam se concentrando principalmente no segmento governamental.

O diálogo e a participação em um conselho de saúde em Santa Catarina, Brasil

Directory of Open Access Journals (Sweden)

Wendhausen Águeda

2002-01-01

Full Text Available Ainda que costumemos acreditar que participação implica necessariamente em diálogo, a prática concreta nos mostra que seus caminhos podem ser divergentes. Neste estudo, realizado em um Conselho de Saúde de um município catarinense foram analisados, a partir de 39 atas de reuniões, os mecanismos e estratégias discursivas que aparecem como "obstrutores" do diálogo, que como constatamos, permanece ausente apesar de se tratar de uma instância participativa. Dentre essas estratégias foram isoladas algumas expressões que Umberto Eco chamou de "hipercodificações", cuja função no conselho parece ser a de fechar qualquer debate. As hipercodificações encontradas foram expressões do jargão técnico, administrativo e político. Mediante essas estratégias discursivas utilizadas, observamos que a linguagem é usada como um ardil que fecha as possibilidades de interlocução democrática, truncando o diálogo. Desse modo, há pouca transitividade nos poderes dos diversos segmentos no conselho estudado, os quais acabam se concentrando principalmente no segmento governamental.

Service quality evaluation in the perception of the wine tourist with Fuzzy Logic and Ideal Solutions

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Joao Batista de Freitas

2017-01-01

Full Text Available Este artículo resuelve un problema multidimensional para evaluar la satisfacción de los enoturis‑tas que visitaron una bodega situada en el sur de Brasil utilizando un método basado en la lógica borrosa. De esta forma, se calcula un índice sintético de satisfacción para un grupo de segmentos en los que estamos interesados, a saber, género e imagen previa a la visita. El problema de la ambigüedad lingüística se aborda desde la teoría de los conjuntos borrosos aplicando números borrosos triangulares (NBT. El indicador sintético de la satisfacción se basa en el concepto de grado de optimalidad mediante la técnica de la semejanza a las so‑luciones ideales. Los resultados obtenidos muestran que los segmentos analizados experimentan una distinta satisfacción. Nuestros resultados pueden usarse por los directivos de la bodega, así como por los planificadores y administradores de la región, para mejorar la competitividad de este nicho de mercado.

Transanal stent in anterior resection does not prevent anastomotic leakage

DEFF Research Database (Denmark)

Bülow, Steffen; Bulut, O; Christensen, Ib Jarle

2006-01-01

OBJECTIVE: A defunctioning transanal stent may theoretically reduce the leakage rate after anterior rectal resection. We present a randomized open study with the aim of comparing the leakage rate after anterior resection with a loop ileostomy, a transanal stent, both or neither. PATIENTS AND METH....... On this basis it was decided to discontinue the study prematurely for ethical reasons. CONCLUSION: Decompression of the anastomosis with a transanal stent does not reduce the risk of anastomotic leakage after anterior resection.......OBJECTIVE: A defunctioning transanal stent may theoretically reduce the leakage rate after anterior rectal resection. We present a randomized open study with the aim of comparing the leakage rate after anterior resection with a loop ileostomy, a transanal stent, both or neither. PATIENTS...... AND METHODS: Randomized open trial of 194 patients operated in 11 hospitals during September 2000 to September 2003 with anterior resection for a mobile rectal tumour, 115 men and 79 women, median age 68 years (range 37-90 years). The surgeon decided upon the use of a protective ileostomy, and after...

Resposta pressórica após exercício resistido de diferentes segmentos corporais em hipertensos Respuesta presórica después de ejercicio de resistencia de diferentes segmentos corporales en hipertensos Pressure response after resistance exercise for different body segments in hypertensive people

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Adriana Marques Battagin

2010-09-01

Full Text Available FUNDAMENTO: O exercício resistido tem sido atualmente recomendado como componente adjunto do exercício aeróbico no programa de treinamento físico direcionado ao tratamento e controle da hipertensão arterial sistêmica (HAS. Entretanto, o mesmo ainda não tem sido amplamente incorporado na prática clínica, possivelmente pela escassez de evidências disponíveis sobre os limites seguros da resposta pressórica aguda nessa modalidade. OBJETIVO: Investigar o efeito agudo do exercício resistido progressivo, de diferentes segmentos corporais, na resposta pressórica de pacientes com hipertensão arterial sistêmica (HAS controlada. MÉTODOS: Vinte e cinco pacientes (14 mulheres com HAS controlada com medicamentos (64,5 ± 10,8 anos de idade e sedentários, realizaram três visitas para uma sessão de exercício resistido progressivo aleatória, nos seguintes grupos musculares: quadríceps femoral, grande dorsal e bíceps braquial. Medidas de pressão arterial foram obtidas em todas as visitas no repouso, imediatamente após cada série de exercício e após 5 minutos de recuperação. RESULTADOS: Imediatamente após o exercício resistido agudo, houve significante aumento das pressões sistólicas, sem modificações significantes das pressões diastólicas, quando comparadas aos níveis pressóricos de repouso, para todos os grupos musculares e para todas as intensidades avaliadas. Adicionalmente, observou-se maior tendência à elevação da pressão sistólica quando o quadríceps femoral foi exercitado em alta intensidade. CONCLUSÃO: O exercício resistido de diferentes segmentos corporais promoveu aumentos similares e seguros dos níveis de pressão arterial sistólica, embora com tendência a maior resposta desta quando exercitados grandes grupos musculares em cargas elevadas.FUNDAMENTO: El ejercicio de resistencia ha sido actualmente recomendado como componente adjunto del ejercicio aeróbico en el programa de entrenamiento f

ANÁLISE DA INFLUÊNCIA LITOLÓGICA E ESTRUTURAL A PARTIR DE MÉTODOS MORFOMÉTRICOS EM SEGMENTOS DE DRENAGEM NA PORÇÃO CIMEIRA DA BACIA HIDROGRÁFICA DO RIO JEQUITINHONHA, MG

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Fabrício Antonio Lopes

2016-06-01

Full Text Available O estudo do padrão de drenagem da porção cimeira da bacia hidrográfica do Jequitinhonha foi realizado neste trabalho tendo como objetivos: a Correlacionar as direções dos canais fluviais e respectivas ordens hierárquicas às estruturas geológicas regionais; b Verificar o grau de influência dos aspectos litológicos e estruturais no padrão de drenagem da bacia e; c Identificar estruturas que atuam como níveis de base locais em perfis longitudinais. Foram empregadas análises quantitativas de tratamento de direção dos canais fluviais e ordens hierárquicas, cálculo do índice de RDE em segmentos pré-selecionados e análise de perfis longitudinais. Constatou-se significativa influência litológica e estrutural no padrão/direção dos canais fluviais identificadas como nick points nos perfis longitudinais. Há segmentos de drenagem com anomalias de primeira e segunda ordem quanto ao índice RDE, o que reforça a influência das estruturas pré-cambrianas, reativadas no Cenozoico, no sistema hidrográfico da região. Acredita-se na potencialidade deste estudo como auxilio na caracterização, quantificação e fundamentação teórica de análises referentes ao processo evolutivo da paisagem e ao comportamento da rede de drenagem local.

[Microsurgical anatomy importance of A1-anterior communicating artery complex].

Science.gov (United States)

Monroy-Sosa, Alejandro; Pérez-Cruz, Julio César; Reyes-Soto, Gervith; Delgado-Hernández, Carlos; Macías-Duvignau, Mario Alberto; Delgado-Reyes, Luis

2013-01-01

The anterior cerebral artery originates from the bifurcation of the internal carotid artery lateral to the optic chiasm, then joins with its contralateral counterpart via the anterior communicating artery. A1-anterior communicating artery complex is the most frequent anatomical variants and is the major site of aneurysms between 30 to 37%. Know the anatomy microsurgical, variants anatomical and importance of complex precommunicating segment-artery anterior communicating in surgery neurological of the pathology vascular, mainly aneurysms, in Mexican population. The study was performed in 30 brains injected. Microanatomy was studied (length and diameter) of A1-anterior communicating artery complex and its variants. 60 segments A1, the average length of left side was 11.35 mm and 11.84 mm was right. The average diameter of left was 1.67 mm and the right was 1.64 mm. The average number of perforators on the left side was 7.9 and the right side was 7.5. Anterior communicating artery was found in 29 brains of the optic chiasm, its course depended on the length of the A1 segment. The average length of the segment was 2.84 mm, the average diameter was 1.41 mm and the average number of perforators was 3.27. A1-anterior communicating artery complex variants were found in 18 (60%) and the presence of two blister-like aneurysms. It is necessary to understand the A1-anterior communicating artery complex microanatomy of its variants to have a three-dimensional vision during aneurysm surgery.

Procedimiento de estabilización de mercurio líquido mediante cemento polimérico de azufre, vía sulfuro de mercurio.

OpenAIRE

López-Delgado, Aurora; López Gómez, Félix Antonio; Alguacil, Francisco José; Alonso Gámez, Manuel

2011-01-01

Procedimiento de estabilización de mercurio líquido mediante cemento polimérico de azufre, vía sulfuro de mercurio. Procedimiento para la estabilización de mercurio líquido mediante la obtención de cementos poliméricos de azufre que comprende: (a) transformación del mercurio líquido en sulfuro de mercurio (metacinabrio) mediante reacción química, en condiciones estequiométricas, entre el mercurio y el azufre elemental; y (b) obtención de cemento polimérico de azufre me...

Psychological Aspects of Recovery Following Anterior Cruciate Ligament Reconstruction.

Science.gov (United States)

Christino, Melissa A; Fantry, Amanda J; Vopat, Bryan G

2015-08-01

Recovery following anterior cruciate ligament reconstruction is an arduous process that requires a significant mental and physical commitment to rehabilitation. Orthopaedic research in recent years has focused on optimizing anterior cruciate ligament surgical techniques; however, despite stable anterior cruciate ligament reconstructions, many athletes still never achieve their preinjury ability or even return to sport. Psychological factors associated with patient perceptions and functional outcomes following anterior cruciate ligament reconstruction are important to acknowledge and understand. Issues related to emotional disturbance, motivation, self-esteem, locus of control, and self-efficacy can have profound effects on patients' compliance, athletic identity, and readiness to return to sport. The psychological aspects of recovery play a critical role in functional outcomes, and a better understanding of these concepts is essential to optimize the treatment of patients undergoing anterior cruciate ligament reconstruction, particularly those who plan to return to sport. Identifying at-risk patients, encouraging a multidisciplinary approach to patient care, and providing early referral to a sports psychologist may improve patient outcomes and increase return-to-play rates among athletes. Copyright 2015 by the American Academy of Orthopaedic Surgeons.

Modeling the drug transport in the anterior segment of the eye.

Science.gov (United States)

Avtar, Ram; Tandon, Deepti

2008-10-02

The aim of the present work is the development of a simple mathematical model for the time course concentration profile of topically administered drugs in the anterior chamber aqueous humor and investigation of the effects of various model parameters on the aqueous humor concentration of lipophilic and hydrophilic drugs. A simple pharmacokinetic model for the transient drug transport in the anterior segment has been developed by using the conservation of mass in the precorneal tear film, Fick's law of diffusion and Michaelis-Menten kinetics of drug metabolism in cornea, and the conservation of mass in the anterior chamber. An analytical solution describing the drug concentration in the anterior chamber has been obtained. The model predicts that an increase in the drug metabolic (consumption) rate in the corneal epithelium reduces the drug concentration in the anterior chamber for both lipophilic and hydrophilic molecules. A decrease in the clearance rate and distribution volume of the drug in the anterior chamber raises the aqueous humor concentration significantly. It is also observed that decay rate of drug concentration in the anterior chamber is higher for lipophilic molecules than that for hydrophilic molecules. The bioavailability of drugs applied topically to the eye may be improved by a rise in the precorneal tear volume, diffusion coefficient in corneal epithelium and distribution coefficient across the endothelium anterior chamber interface, and by reducing the drug metabolism, drug clearance rate and distribution volume in anterior chamber.

Galvanic vestibular stimulation may improve anterior bending posture in Parkinson's disease.

Science.gov (United States)

Okada, Yohei; Kita, Yorihiro; Nakamura, Junji; Kataoka, Hiroshi; Kiriyama, Takao; Ueno, Satoshi; Hiyamizu, Makoto; Morioka, Shu; Shomoto, Koji

2015-05-06

This study investigated the effects of binaural monopolar galvanic vestibular stimulation (GVS), which likely stimulates the bilateral vestibular system, on the anterior bending angle in patients with Parkinson's disease (PD) with anterior bending posture in a single-blind, randomized sham-controlled crossover trial. The seven PD patients completed two types of stimulation (binaural monopolar GVS and sham stimulation) applied in a random order 1 week apart. We measured each patient's anterior bending angles while he or she stood with eyes open and eyes closed before/after the stimulations. The anterior bending angles in both the eyes-open and the eyes-closed conditions were significantly reduced after the GVS. The amount of change in the eyes-closed condition post-GVS was significantly larger than that by sham stimulation. The amount of change in anterior bending angles in the GVS condition was not significantly correlated with Unified Parkinson's Disease Rating Scale motor score, disease duration, the duration of the postural deformities, and the anterior bending angles before the GVS. Binaural monopolar GVS might improve anterior bending posture in PD patients, irrespective of the duration and the severity of disease and postural deformities. Binaural monopolar GVS might be a novel treatment strategy to improve anterior bending posture in PD.

Postural stability in subjects with anterior cruciate ligament injury

OpenAIRE

Kolář, Miroslav

2011-01-01

6 Abstract Title: Postural stability in subjects with anterior cruciate ligament injury. Objectives: The aim of this thesis was to find out if the postural stability is differed in subjects with anterior cruciate ligament injury and in the control group after the "4 steps - one leg stance" test had been performed. Methods: This study compared a group with anterior cruciate ligament injury and a control group on the basis of the "4 steps - one leg stance" test. Methods of comparison and analys...

Elevator Muscle Anterior Resection: A New Technique for Blepharoptosis.

Science.gov (United States)

Zigiotti, Gian Luigi; Delia, Gabriele; Grenga, Pierluigi; Pichi, Francesco; Rechichi, Miguel; Jaroudi, Mahmoud O; d'Alcontres, Francesco Stagno; Lupo, Flavia; Meduri, Alessandro

2016-01-01

Blepharoptosis is a condition of inadequate upper eyelid position, with a downward displacement of the upper eyelid margin resulting in obstruction of the superior visual field. Levator resection is an effective technique that is routinely used to correct aponeurotic ptosis. The anterior levator resection is the procedure of choice in moderate blepharoptosis when there is moderate to good levator muscle function, furthermore, with an anterior approach, a greater resection can be achieved than by a conjunctival approach. The authors describe a modification in the Putterman technique with a resection done over a plicated elevator, plication that was suggested by Mustardè. The technique has been named as elevator muscle anterior resection. The elevator muscle anterior resection inspires from the Fasanella-Servat operation by the use of a clamp, making the operation simple and predictable.

Anterior Cortical Development During Adolescence in Bipolar Disorder.

Science.gov (United States)

Najt, Pablo; Wang, Fei; Spencer, Linda; Johnston, Jennifer A Y; Cox Lippard, Elizabeth T; Pittman, Brian P; Lacadie, Cheryl; Staib, Lawrence H; Papademetris, Xenophon; Blumberg, Hilary P

2016-02-15

Increasing evidence supports a neurodevelopmental model for bipolar disorder (BD), with adolescence as a critical period in its development. Developmental abnormalities of anterior paralimbic and heteromodal frontal cortices, key structures in emotional regulation processes and central in BD, are implicated. However, few longitudinal studies have been conducted, limiting understanding of trajectory alterations in BD. In this study, we performed longitudinal neuroimaging of adolescents with and without BD and assessed volume changes over time, including changes in tissue overall and within gray and white matter. Larger decreases over time in anterior cortical volumes in the adolescents with BD were hypothesized. Gray matter decreases and white matter increases are typically observed during adolescence in anterior cortices. It was hypothesized that volume decreases over time in BD would reflect alterations in those processes, showing larger gray matter contraction and decreased white matter expansion. Two high-resolution magnetic resonance imaging scans were obtained approximately 2 years apart for 35 adolescents with bipolar I disorder (BDI) and 37 healthy adolescents. Differences over time between groups were investigated for volume overall and specifically for gray and white matter. Relative to healthy adolescents, adolescents with BDI showed greater volume contraction over time in a region including insula and orbitofrontal, rostral, and dorsolateral prefrontal cortices (p adolescence in BDI in anterior cortices, including altered developmental trajectories of anterior gray and white matter. Published by Elsevier Inc.

Uso de terapia antifactor de crecimiento vascular endotelial en patología corneal

Directory of Open Access Journals (Sweden)

Tomás Rojas

2014-07-01

Conclusiones: Los resultados obtenidos en ensayos en animales y en humanos junto con la tolerancia de los pacientes ofrecen una perspectiva alentadora para el papel potencial de agentes anti-VEGF en el tratamiento de la neovascularización del segmento anterior. Es necesaria la realización de ensayos clínicos controlados aleatorizados para establecer a largo plazo la seguridad, la eficacia y las pautas de dosificación para el uso de anti-VEGF en la neovascularización corneal.

Anterior process calcaneal fractures: a systematic evaluation of associated conditions

Energy Technology Data Exchange (ETDEWEB)

Petrover, David [NYU Hospital for Joint Disease, Radiology Department, New York, NY (United States); Hopital Beaujon, Service de Radiologie, Paris (France); Schweitzer, Mark E. [NYU Hospital for Joint Disease, Radiology Department, New York, NY (United States); Laredo, J.D. [Hopital Lariboisiere, Service de Radiologie, Paris (France)

2007-07-15

The objective was to evaluate the association, by MRI, of anterior calcaneal process fractures with tarsal coalitions, ankle sprains, and bifurcate ligament abnormalities. A retrospective review of 1,479 foot and ankle MR images was performed, over a period of 5 years, for isolated anterior process fractures of the calcaneus. Fifteen 1.5-T MR examinations were systematically evaluated by two radiologists in consensus. Marrow edema patterns, presence of a calcaneonavicular coalition, as well as bifurcate and anterior talofibular ligaments, were evaluated. There were 15 fractures of the anterior calcaneal process with an incidence of 1%. The average patient age was 51 years (range 25-82). Twelve patients were women and 3 were men. The majority of the fractures (14 out of 15) presented as an edema pattern on T2-weighted images, either diffuse (9 out of 15), or vertical (5 out of 15). One case did not show marrow edema, but rather a hypointense line. Nine patients (60%) demonstrated calcaneonavicular coalition and anterior calcaneal process fracture. In 6 patients (50%) the anterior talofibular ligament (ATFL) was thickened. Three patients did not have axial images, and were classified as non-conclusive for the ATFL evaluation. The bifurcate ligament was thickened with hyperintense signal demonstrating a sprain in 9 out of 13 (69%). Only 2 patients (16.5%) had an anterior calcaneal process fracture without any associated abnormality. We believe that there is a probable association of anterior process fractures and calcaneonavicular coalitions. We also feel, based on our results and the prior literature that there is likely also an association with both ATFL injuries and bifurcate ligament injuries. (orig.)

Anterior process calcaneal fractures: a systematic evaluation of associated conditions

International Nuclear Information System (INIS)

Petrover, David; Schweitzer, Mark E.; Laredo, J.D.

2007-01-01

The objective was to evaluate the association, by MRI, of anterior calcaneal process fractures with tarsal coalitions, ankle sprains, and bifurcate ligament abnormalities. A retrospective review of 1,479 foot and ankle MR images was performed, over a period of 5 years, for isolated anterior process fractures of the calcaneus. Fifteen 1.5-T MR examinations were systematically evaluated by two radiologists in consensus. Marrow edema patterns, presence of a calcaneonavicular coalition, as well as bifurcate and anterior talofibular ligaments, were evaluated. There were 15 fractures of the anterior calcaneal process with an incidence of 1%. The average patient age was 51 years (range 25-82). Twelve patients were women and 3 were men. The majority of the fractures (14 out of 15) presented as an edema pattern on T2-weighted images, either diffuse (9 out of 15), or vertical (5 out of 15). One case did not show marrow edema, but rather a hypointense line. Nine patients (60%) demonstrated calcaneonavicular coalition and anterior calcaneal process fracture. In 6 patients (50%) the anterior talofibular ligament (ATFL) was thickened. Three patients did not have axial images, and were classified as non-conclusive for the ATFL evaluation. The bifurcate ligament was thickened with hyperintense signal demonstrating a sprain in 9 out of 13 (69%). Only 2 patients (16.5%) had an anterior calcaneal process fracture without any associated abnormality. We believe that there is a probable association of anterior process fractures and calcaneonavicular coalitions. We also feel, based on our results and the prior literature that there is likely also an association with both ATFL injuries and bifurcate ligament injuries. (orig.)

Gastroesophageal scintigraphy in children. A comparison of posterior and anterior imaging

International Nuclear Information System (INIS)

Reyhan, M.; Yapar, A.F.; Aydin, M.; Sukan, A.

2005-01-01

The purpose of this study was to compare the posterior dynamic imaging with the anterior imaging in the evaluation of children with gastroesophageal reflux (GER). Sixty-eight children (26 female, 42 male; age range 4 months to 7 years, median 21 months) were studied. After 4-hour fasting, all the subjects underwent gastroesophageal scintigraphy. Synchronous dynamic imaging in the anterior and posterior projections was performed with the subject in the supine position with a dual-head gamma camera equipped with low-energy general-purpose collimators at a rate of 30 s/frame for 40 min. The anterior and posterior images were visually evaluated for the presence of gastroesophageal reflux by two nuclear medicine physicians. The anterior and posterior images were correlated by Pearson correlation analysis, and inter-observer variability was evaluated by paired t-test and kappa value. There was a good correlation between the two projections with r-values of 0.906-0.990. The inter-observer agreement for interpretation of the anterior and posterior imaging was excellent (k: 0.83). In conclusion, anterior and posterior dynamic imaging showed excellent correlation in detection of GER in children. Posterior imaging is superior to anterior imaging in that it is more comfortable, and it reduces motion artifacts, especially for infants and anxious children; thus, it may be preferred over anterior imaging. (author)

Modelo de dinámica lateral de vehículo mediante bond graph

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Juan Carlos Parra Márquez

2008-07-01

Full Text Available Este trabajo presenta los resultados de la investigación, cuyo objetivo es obtener un modelo matemático que permita determinar la dinámica lateral de un vehículo mediante el uso de Bond Graph. Este modelo es válido para robótica móvil. Los análisis de comportamiento del modelo han sido probados con simulaciones típicas del movimiento lateral de un vehículo. Finalmente, este modelo ha sido obtenido e implementado mediante el software 20-Sim. This paper presents the results of a research whose objective was to find a mathematical model in order to determine the lateral dynamic of Vehicle by means of the use of Bond Graph. This model is valid also for mobile robotics. The analyses of behavior of the model were realized across typical simulations of a vehicle in lateral movement. Finally, this mathematical model was obtained and implemented across the software 20-Sim.

A small absorbable stent for treatment of anterior glottic web.

Science.gov (United States)

Bhongmakapat, Thongchai; Kantapasuantara, Kanjalak; Praneevatakul, Phurich

2012-03-01

A new one-stage approach for treatment of selected anterior glottic web has been successful. This case report illustrates its simplicity in microlaryngoscopy with complete lysis of the anterior glottic web by CO(2) laser. Then a small neck horizontal incision is made at the level of anterior commissure to gain exposure to thyroid cartilage. Absorbable suture is passed through the midline of thyroid cartilage below and above the anterior commissure. A knot is tied over thyroid ala. The suture acts as a tiny stent to prevent recurrence of the web. Copyright © 2012 The Voice Foundation. Published by Mosby, Inc. All rights reserved.

Implementación del análisis de riesgo en la industria alimentaria mediante la metodología AMEF: enfoque práctico y conceptual

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Andrés Cartín-Rojas

2014-06-01

Full Text Available El análisis de riesgo mediante el Análisis Modal de Efectos y Fallas (AMEF se aplicó y se incorporó en conjunto con el Análisis de Peligros y Puntos Críticos de Control (HACCP para establecer la evaluación de riesgos en una maquiladora de pavo deshuesado. En este trabajo se calculó y se predijo, por medio de la significancia del riesgo, la importancia de establecer medidas preventivas en las etapas de proceso más vulnerables. El cálculo de la significancia se realizó obteniendo el Índice de Criticidad (IC. Los puntos críticos de control se establecieron con la metodología del árbol de decisiones, que se enfocó en aquellas etapas que mostraron tener los valores más altos relativos al IC. Las principales causas posibles que generan una desviación de los puntos críticos de control fueron enlistadas y analizadas a través de un análisis causa-raíz, con el uso del diagrama de Ishikawa. La integración del análisis de riesgo dentro de un plan HACCP demostró proveer amplias ventajas que facilitan el control de los procesos de manufactura y el aseguramiento de la salud pública a los consumidores finales, al generar alimentos inocuos y de alta calidad, al tiempo que mejora el desempeño operacional del ciclo productivo. Se identificaron las etapas de almacenamiento y descongelación como los principales segmentos con tendencia a mostrar altos valores de IC. Las acciones correctivas sugeridas bajaron notablemente los valores del IC por debajo del límite aceptable. Los resultados del presente estudio muestran claramente la importancia de la incorporación de un buen sistema de control sistemático para la gestión de riesgos en la industria avícola.

Ciclo de vida organizacional pautado no modelo de Lester, Parnell e Carraher (2003 e na lógica fuzzy: classificação de empresas de um segmento industrial de Santa Catarina

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Ilse Maria Beuren

2012-06-01

Full Text Available Neste estudo, objetiva-se identificar os estágios do ciclo de vida organizacional pautados no modelo de Lester, Parnell e Carraher (2003 das empresas do segmento industrial de máquinas, aparelhos e materiais elétricos do estado de Santa Catarina. Pesquisa descritiva, com abordagem quantitativa, foi realizada por meio de levantamento com aplicação de questionário aos gestores das empresas. A população constituiu-se das 264 empresas desse segmento econômico, listadas na Secretaria da Fazenda do Estado de Santa Catarina, e a amostra não aleatória das 40 empresas que responderam a pesquisa. As variáveis de identificação dos estágios de ciclo de vida utilizadas no questionário foram extraídas de Lester, Parnell e Carraher (2003. Os dados da pesquisa foram submetidos à técnica estatística denominada lógica fuzzy. Os resultados da pesquisa demonstraram que 57,5% das empresas foram classificadas no estágio do nascimento, 15% do, 7,5% da Maturidade, 10% do rejuvenescimento e 10% do declínio. Concluiu-se que determinados estágios do ciclo de vida organizacional estão próximos uns dos outros e que não se pode perceber claramente uma progressão determinista nas fases do ciclo de vida, como uma sequência única, definitiva e irreversível, no sentido tradicional biológico.

Factors associated with anterior open bite in children with developmental disabilities.

Science.gov (United States)

de Castilho, Lia Silva; Abreu, Mauro Henrique Nogueira Guimarães; Pires E Souza, Luiz Gustavo de Almeida; Romualdo, Leiliane Teresinha de Almeida; Souza E Silva, Maria Elisa; Resende, Vera Lúcia Silva

2018-01-01

To investigate factors associated with anterior open bite in individuals aged from 2 to 33 years with developmental disabilities. This is a cross-sectional study. A total of 271 dental records were examined. The anterior open bite analyzed was determined based on clinic exam. These variables were also analyzed: gender, age, education level of mother, International Code of Diseases (ICD), mouth breathing, use of anticonvulsant drugs, hyperkinesis, pacifier use, thumb sucking, seizure, and involuntary movements. For the purposes of analysis, the individuals were categorized as being with and without anterior open bite. Variables with a p-value of open bite than nasal breathers. Pacifier users are more likely to have an anterior open bite (3.32-fold, 95% CI: 1.62-6.77). Individuals with reported involuntary movements had a 2.66-fold (95% CI: 1.26-5.63) greater chance of exhibiting anterior open bite. Users of anticonvulsants drugs had a 3.05 (95% CI: 1.57-5.92) greater chance of showing anterior open bite. Involuntary movements, mouth breathing, using anticonvulsant drugs, and using pacifier are factors associated with anterior open bite in patients with developmental disabilities. © 2017 Special Care Dentistry Association and Wiley Periodicals, Inc.

ANTERIOR KNEE PAIN AND LOWER EXTREMITY FUNCTIONS IN INDIAN ADOLESCENT POPULATION

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Riddhi Shroff

2016-01-01

Full Text Available Background & Purpose - Anterior knee pain is one of the most common musculoskeletal complain seen in Indian adolescent population with high incidence among those who are active in sports and recreation. The purpose of this study was to investigate the age of onset of anterior knee pain, to find its effect on sports participation and also to find the activities which are maximally affected due to anterior knee pain in Indian population. Method- A questionnaire based survey was conducted among 50 subjects using three outcome measures namely self made demographic questionnaire, anterior knee pain scale and lower extremity functional scale. Result- Maximally affected activities are running, jumping & squatting and maximally affected functions are squatting, running on uneven ground, making sharp turns while running and hopping with increase incidence of anterior knee pain among those who participate daily in sports. Conclusion- The study concluded, that in adolescent age group of 11-17 years, anterior knee pain is more prevalent in adolescent girls with the age of onset being around 13 years for girls & 14.5 years in boys and it also showed moderate positive correlation between anterior knee pain and lower extremity functions.

Panoramic radiographs underestimate extensions of the anterior loop and mandibular incisive canal

International Nuclear Information System (INIS)

De Brito, Ana Caroline Ramos; Nejaim, Yuri; De Freitas, Deborah Queiroz; De Oliveira Santos, Christiano

2016-01-01

The purpose of this study was to detect the anterior loop of the mental nerve and the mandibular incisive canal in panoramic radiographs (PAN) and cone-beam computed tomography (CBCT) images, as well as to determine the anterior/mesial extension of these structures in panoramic and cross-sectional reconstructions using PAN and CBCT images. Images (both PAN and CBCT) from 90 patients were evaluated by 2 independent observers. Detection of the anterior loop and the incisive canal were compared between PAN and CBCT. The anterior/mesial extension of these structures was compared between PAN and both cross-sectional and panoramic CBCT reconstructions. In CBCT, the anterior loop and the incisive canal were observed in 7.7% and 24.4% of the hemimandibles, respectively. In PAN, the anterior loop and the incisive canal were detected in 15% and 5.5% of cases, respectively. PAN presented more difficulties in the visualization of structures. The anterior/mesial extensions ranged from 0.0 mm to 19.0 mm on CBCT. PAN underestimated the measurements by approximately 2.0 mm. CBCT appears to be a more reliable imaging modality than PAN for preoperative workups of the anterior mandible. Individual variations in the anterior/mesial extensions of the anterior loop of the mental nerve and the mandibular incisive canal mean that is not prudent to rely on a general safe zone for implant placement or bone surgery in the interforaminal region

Panoramic radiographs underestimate extensions of the anterior loop and mandibular incisive canal

Energy Technology Data Exchange (ETDEWEB)

De Brito, Ana Caroline Ramos; Nejaim, Yuri; De Freitas, Deborah Queiroz [Dept. of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas, Sao Paulo (Brazil); De Oliveira Santos, Christiano [Dept. of Stomatology, Public Oral Health and Forensic Dentistry, School of Dentistry of Ribeirao Preto, University of Sao Paulo, Sao Paulo (Brazil)

2016-09-15

The purpose of this study was to detect the anterior loop of the mental nerve and the mandibular incisive canal in panoramic radiographs (PAN) and cone-beam computed tomography (CBCT) images, as well as to determine the anterior/mesial extension of these structures in panoramic and cross-sectional reconstructions using PAN and CBCT images. Images (both PAN and CBCT) from 90 patients were evaluated by 2 independent observers. Detection of the anterior loop and the incisive canal were compared between PAN and CBCT. The anterior/mesial extension of these structures was compared between PAN and both cross-sectional and panoramic CBCT reconstructions. In CBCT, the anterior loop and the incisive canal were observed in 7.7% and 24.4% of the hemimandibles, respectively. In PAN, the anterior loop and the incisive canal were detected in 15% and 5.5% of cases, respectively. PAN presented more difficulties in the visualization of structures. The anterior/mesial extensions ranged from 0.0 mm to 19.0 mm on CBCT. PAN underestimated the measurements by approximately 2.0 mm. CBCT appears to be a more reliable imaging modality than PAN for preoperative workups of the anterior mandible. Individual variations in the anterior/mesial extensions of the anterior loop of the mental nerve and the mandibular incisive canal mean that is not prudent to rely on a general safe zone for implant placement or bone surgery in the interforaminal region.

Superior dislocation hip with anterior column acetabular fracture ...

African Journals Online (AJOL)

Superior variety of anterior dislocation of the hip is a rare injury. Its occurrence with acetabular fractures has been documented infrequently. We report a case of superior dislocation of the hip with anterior column acetabular fracture. Open reduction of the hip and internal fixation of the fracture was carried out using a twin ...

MRI anatomy of anteriorly displaced anus: what obstructs defecation?

International Nuclear Information System (INIS)

AbouZeid, Amr Abdelhamid; Mohammad, Shaimaa Abdelsattar; Khairy, Khaled Talaat

2014-01-01

Anteriorly displaced anus is an anomaly that is debated with regard to its nomenclature, diagnosis and management. To describe MRI anatomy of the anal canal in children with anteriorly displaced anus and its impact on the process of defecation. We prospectively examined ten children (7 girls, 3 boys; age range 7 months to 8 years, mean 3 years) with anteriorly displaced anus between August 2009 and April 2012. Noncontrast MRI examinations were performed on a 1.5-T magnet. T1- and T2-weighted turbo spin-echo images were acquired in axial, sagittal and coronal planes of the pelvis. The anorectal angle and the relative hiatal distance were measured in mid-sagittal images, and compared with those of a control group using the Mann-Whitney test. In children with anteriorly displaced anus, no anatomical abnormality was depicted at the level of the proximal anal canal. However, the distal anal canal was displaced anteriorly, running out its external muscle cuff, which remained un-displaced at the usual site of the anus. This changes the orientation of the central axis of the anal canal by passing across instead of along the fibers of the longitudinal muscle coat. Children with anteriorly displaced anus had a more obtuse anorectal angle (mean 112.1 ), which was significantly greater than that of the control group (mean 86.2 ). MRI is a valuable tool in studying the anatomy of the anal canal in children with anteriorly displaced anus. The abnormal orientation of the longitudinal muscle across the anal canal can explain the obstructed defecation in these children. Based on this study, it might be of interest to use MRI in studying equivocal cases and children with unexplained constipation. (orig.)

MRI anatomy of anteriorly displaced anus: what obstructs defecation?

Energy Technology Data Exchange (ETDEWEB)

AbouZeid, Amr Abdelhamid [Ain-Shams University, Department of Pediatric Surgery, Cairo (Egypt); Mohammad, Shaimaa Abdelsattar; Khairy, Khaled Talaat [Ain-Shams University, Department of Radiodiagnosis, Cairo (Egypt)

2014-07-15

Anteriorly displaced anus is an anomaly that is debated with regard to its nomenclature, diagnosis and management. To describe MRI anatomy of the anal canal in children with anteriorly displaced anus and its impact on the process of defecation. We prospectively examined ten children (7 girls, 3 boys; age range 7 months to 8 years, mean 3 years) with anteriorly displaced anus between August 2009 and April 2012. Noncontrast MRI examinations were performed on a 1.5-T magnet. T1- and T2-weighted turbo spin-echo images were acquired in axial, sagittal and coronal planes of the pelvis. The anorectal angle and the relative hiatal distance were measured in mid-sagittal images, and compared with those of a control group using the Mann-Whitney test. In children with anteriorly displaced anus, no anatomical abnormality was depicted at the level of the proximal anal canal. However, the distal anal canal was displaced anteriorly, running out its external muscle cuff, which remained un-displaced at the usual site of the anus. This changes the orientation of the central axis of the anal canal by passing across instead of along the fibers of the longitudinal muscle coat. Children with anteriorly displaced anus had a more obtuse anorectal angle (mean 112.1 ), which was significantly greater than that of the control group (mean 86.2 ). MRI is a valuable tool in studying the anatomy of the anal canal in children with anteriorly displaced anus. The abnormal orientation of the longitudinal muscle across the anal canal can explain the obstructed defecation in these children. Based on this study, it might be of interest to use MRI in studying equivocal cases and children with unexplained constipation. (orig.)

Procedimiento para la obtención de levaduras vínicas superproductoras de manoproteínas mediante tecnologías no recombinantes

OpenAIRE

Barcenilla Moraleda, José María; González Ramos, Daniel; Tabera, Laura; González García, Ramón

2008-01-01

Procedimiento para la obtención de levaduras vínicas superproductoras de manoproteínas mediante tecnologías no recombinantes. Procedimiento para obtener cepas de levaduras superproductoras de manoproteínas mediante la selección de mutantes resistentes a la toxina K9, cepas obtenibles por dicho procedimiento y usos.

Análise do fluxo informacional presente em uma empresa do segmento de serviços de valor agregado (SVA

Directory of Open Access Journals (Sweden)

Izabella Bauer de Assis Cunha

Full Text Available O objetivo principal deste artigo foi demonstrar a existência e a importância do fluxo informacional entre o setor de Business Intelligence e os setores de Negócios e Produtos de uma empresa do segmento de Serviço de Valor Agregado (SVA. A principal fundamentação teórica baseou-se em modelos de identificação das necessidades, percepções e análises informacionais, processos de busca e uso da informação e representação do fluxo de informação. Foi utilizado o estudo de caso único como principal método de pesquisa. Foram realizadas entrevistas individuais em profundidade com o diretor de Pesquisa e Desenvolvimento e os representantes das áreas envolvidas da empresa foco do estudo. Como resultados alcançados, foram identificados os gaps e possíveis melhorias do atual fluxo de informação existente entre os setores analisados, e proposto um modelo "ideal", com objetivo de aumentar a eficiência operacional e analítica entre os setores.

Roentgenographic findings following anterior cervical fusion

Energy Technology Data Exchange (ETDEWEB)

Gore, D R; Gardner, G M; Sepic, S B; Murray, M P

1986-10-01

We reviewed the pre- and postoperative lateral cervical roentgenograms in 90 patients who had anterior fusions and compared their findings with age and sex-matched people without neck problems. The average interval from surgery to review was 5 years. Preoperatively, all patients had a higher incidence of degenerative spondylosis at the levels to be fused than their asymptomatic counterparts. Postoperatively, there was no difference in the incidence of degenerative change between the operated and the control group at the levels above and below the fusion with the exception of anterior osteophyte formation which was more frequent in those with fusions.

Modelado del proceso de esterilización del hospital clínico universitario de Valladolid mediante diagramas IDEF

OpenAIRE

Viñas del Hoyo, Víctor

2015-01-01

El principal objetivo de este trabajo de fin de grado es elaborar mediante diagramas IDEF, más concretamente el IDEFO, cuál sería el funcionamiento de la central de esterilización de nueva construcción del Hospital Clínico Universitario de Valladolid, mediante la gestión por procesos. Otros objetivos secundarios pero no menos importantes de este proyecto son:comprender el modelo de gestión por procesos e identificar los pasos que hay que seguir para implantarla correctamente. Ver y aprender ...

Replacement of Missing Anterior Teeth in a Patient with Temporomandibular Disorder

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Satheesh B. Haralur

2014-01-01

Full Text Available The loss of anterior teeth leads to extreme psychological trauma, along with functional and esthetic debilitations. Healthy anterior teeth play an important role of protecting the posterior teeth during excursive mandibular movement. Loss of anterior teeth induces posterior interference with extended disocclusion time. Posterior disocclusion is critical to remove the harmful force on the teeth temporomandibular joint and eliminate muscle hypertonicity. Occlusal interference is considered as contributing factor to temporomandibular disorder (TMD symptoms. Prosthesis design should eliminate deleterious tooth contacts. Establishing optimum anterior guidance is a key to establishing harmonious functional occlusion in addition to the correction of the esthetic and phonetic disabilities. This case report explains the steps involved in the rehabilitation of the TMD patient with loss of maxillary anterior teeth.

Efeito compatibilizante de copolímeros contendo segmentos líquido-cristalinos em misturas com poli(tereftalato de etileno) e um poliéster líquido-cristalino termotrópico (TLCP).

OpenAIRE

Novack, Kátia Monteiro; Stellet, Carla Andrade; Gomes, Ailton de Souza

1999-01-01

Uma série de copolímeros com segmentos líquido-cristalinos foram sintetizados por policondensação em solução a alta temperatura e misturados com poli(tereftalato de etileno) (PET) e um poliéster líquido-cristalino termotrópico (TLCP), previamente sintetizado. Os copolímeros foram utilizados com sucesso como compatibilizantes nas misturas PET/TLCP. As técnicas de caloria diferencial de varredura, análises dinâmico-mecânicas, análises térmicas e microscopia eletrônica (SEM) foram utilizad...

Extracción de ADN de Trypanosoma cruzi mediante tratamiento con bromuro de hexadecil-trimetil-amonio

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Marcela Escalante

1997-06-01

Full Text Available En el presente trabajo se describe un método rápido, sencillo y eficaz para la obtención de ADN genómico de Trypanosoma cruzi, libre de impurezas y fácil de manipular. Dicho procedimiento se basa en la lisis del parásito con SDS y remoción de proteínas mediante la digestión con proteinasa K, seguida de la precipitación selectiva de carbohidratos y proteínas residuales con bromuro de hexadecil-trimetil-amonio (CTAB. Finalmente, el ADN se extrae con cloroformo: alcohol isoamílico y se recupera de la fase acuosa mediante precipitación con isopropanol.

Combined anterior C2-C3 fusion and C2 pedicle screw fixation for the treatment of unstable hangman's fracture: a contrast to anterior approach only.

Science.gov (United States)

Xie, Ning; Khoo, Larry T; Yuan, Wen; Ye, Xiao-Jian; Chen, De-Yu; Xiao, Jian-Ru; Ni, Bin

2010-03-15

A retrospective clinical study was used to evaluate the effect of a new surgical treatment of the hangman's fractures. To determine the treatment efficacy of combined anterior C2-C3 reduction and fusion and posterior compressive C2 pedicle screw fixation for the management of unstable hangman's fractures. The classification of hangman's fractures as proposed by Levine-Edwards was used to classify and guide the treatment of these injuries. Most of these fractures respond to a variety of conservative therapies, but recently, earlier surgery has been increasingly advocated by authors from several countries for the rapid stabilization of these fractures. If surgery is indicated, an anterior approach using a C2-C3 reduction and fusion is preferred usually. Another well-accepted surgical method is the direct transpedicular osteosynthesis by the dorsal approach. However, there was rare report of the combined use of these 2 techniques. A group of 45 surgical patients were all diagnosed with radiograph, magnetic resonance imaging (MRI), and 3D CT scans. Initial and final radiographs were measured for anterior translation and angulation of the C2-C3 complex. Initial external skull traction with extension was used in all patients after admission to reduce the fracture. Then an anterior C2-C3 discectomy followed by an interbody fusion and locking plate fixation was performed. Intraoperative reduction was confirmed by fluoroscopic control. About 29 patients therefore received anterior surgeries only since satisfactory reduction was achieved during the procedure. For the 16 patients who had persistent large residual gaps after the anterior procedure, additional same stage posterior C2 compressive pedicle screws were placed. Clinical and radiologic comparisons were performed in these 2 groups. The follow-up ranged from 24 to 54 months, with an average 33.6 months. There was radiographic evidence of continuity of the fracture and the bone graft seen at 4.7 months on average. Neck

Prediction of parent artery of anterior communicating artery aneurysm on CT angiography

International Nuclear Information System (INIS)

Chung, Jin Young; Han, Tae Il; Kim, Dae Hong; Han, Hyun Young; Kim, Hyun Jung; Song, Mun Kab

1999-01-01

To determine whether CT angiography can predict the parent artery of an anterior communicating aneurysm on the basis of characteristics of the aneurysm and precommunication anterior cerebral artery. Eighteen patients with anterior communication aneurysm were studied prospectively using CT angiography and conventional angiography. The parent artery of an aneurysm was predicted by evaluating aneurysm neck location, direction of aneurysm projection, and size of the precommunicating anterior cerebral artery, as seen on CT angiography. A somatom Plus-4 spiral CT scanner was used and shaded-surface display three-dimensional images were constructed. Aneurysm neck was located near the parent artery in 12 cases(66.7%), and aneurysm projection was against the parent artery in 11 cases(61.1%). The parent artery of the anterior cerebral artery was larger in 15 cases(83.3%), including ten cases of hypoplasia or agenesis of the contralateral anterior cerebral artery. In 17 of 18 aneurysms(94.4%) the parent artery seen on DSA was correctly predicted by CT angiography. The parent artery of an anterior communicating aneurysm can be predicted by evaluating aneurysm neck location, direction of aneurysm projection, and precommunicating anterior cerebral artery, as seen on CT angiography

Evaluación de las tecnologías crediticias de las cooperativas del segmento 3 de la ciudad de Quito y su incidencia en los principales indicadores financieros de riesgo: morosidad, liquidez y solvencia

OpenAIRE

Núñez Oñate, Flor Cumandá

2017-01-01

En el Ecuador, las entidades del sector financiero popular y solidario (SFPS) en particular las cooperativas de ahorro y crédito han mantenido un constante crecimiento frente al sector financiero y económico del país, pues cubren segmentos de mercado no alcanzados por la banca privada tradicional atendiendo la demanda de crédito y demás servicios financieros tanto en áreas urbanas como rurales. En este contexto, el presente trabajo de investigación tiene como objetivo evaluar las tecnologías ...

Case study: limitations of panoramic radiography in the anterior mandible.

LENUS (Irish Health Repository)

Walker, Cameron

2009-12-01

Dental Panoramic Tomography (DPT) is a widely used and valuable examination in dentistry. One area prone to artefacts and therefore misinterpretation is the anterior region of the mandible. This case study discusses a periapical radiolucency related to lower anterior teeth that is discovered to be a radiographic artefact. Possible causes of the artefact include a pronounced depression in the mental region of the mandible or superimposition of intervertebral spaces. Additional limitations of the DPT image include superimposition of radio-opaque structures, reduced image detail compared to intra-oral views and uneven magnification. These problems often make the DPT inappropriate for imaging the anterior mandible. Clinical Relevance: Panoramic radiography is often unsuitable for radiographic examination of the anterior mandible.

Does concomitant anterior fundoplication promote dysphagia after laparoscopic Heller myotomy?

Science.gov (United States)

Tapper, Donovan; Morton, Connor; Kraemer, Emily; Villadolid, Desiree; Ross, Sharona B; Cowgill, Sarah M; Rosemurgy, Alexander S

2008-07-01

Concerns for gastroesophageal reflux after laparoscopic Heller myotomy for achalasia justify considerations of concomitant anterior fundoplication. This study was undertaken to determine if concomitant anterior fundoplication reduces symptoms of reflux after myotomy without promoting dysphagia. From 1992 to 2004, 182 patients underwent laparoscopic Heller myotomy without fundoplication. After a prospective randomized trial justified its concomitant application, anterior fundoplication was undertaken with laparoscopic Heller myotomy in 171 patients from 2004 to 2007. All patients have been prospectively followed. Pre and postoperatively, patients scored the frequency and severity of symptoms of achalasia (including dysphagia, choking, vomiting, regurgitation, chest pain, and heartburn) using a Likert Scale (0 = never/not bothersome to 10 = always/very bothersome). Before myotomy, symptoms of achalasia were frequent and severe for all patients. After myotomy, the frequency and severity of all symptoms of achalasia significantly decreased for all patients (P Heller myotomy alone, concomitant anterior fundoplication led to significantly less frequent and severe heartburn after myotomy (P Heller myotomy reduces the frequency and severity of symptoms of achalasia. Concomitant anterior fundoplication decreases the frequency and severity of heartburn and dysphagia after laparoscopic Heller myotomy. Concomitant anterior fundoplication promotes salutary relief in the frequency and severity of symptoms after myotomy and is warranted.

[Capsular retensioning in anterior unidirectional glenohumeral instability].

Science.gov (United States)

Benítez Pozos, Leonel; Martínez Molina, Oscar; Castañeda Landa, Ezequiel

2007-01-01

To present the experience of the Orthopedics Service PEMEX South Central Hospital in the management of anterior unidirectional shoulder instability with an arthroscopic technique consisting of capsular retensioning either combined with other anatomical repair procedures or alone. Thirty-one patients with anterior unidirectional shoulder instability operated-on between January 1999 and December 2005 were included. Fourteen patients underwent capsular retensioning and radiofrequency, and in 17 patients, capsular retensioning was combined with suture anchors. Patients with a history of relapsing glenohumeral dislocations and subluxations, with anterior instability with or without associated Bankart lesions were selected; all of them were young. The results were assessed considering basically the occurrence of instability during the postoperative follow-up. No cases of recurring instability occurred. Two cases had neuroma and one experienced irritation of the suture site. Six patients had residual limitation of combined lateral rotation and abduction movements, of a mean of 10 degrees compared with the healthy contralateral side. The most frequent incident was the leak of solutions to the soft tissues. Capsular retensioning, whether combined or not with other anatomical repair techniques, has proven to result in a highly satisfactory rate of glenohumeral stabilization in cases of anterior unidirectional instabilities. The arthroscopic approach offers the well-known advantages of causing less damage to the soft tissues, and a shorter time to starting rehabilitation therapy and exercises.

Prevalence and Length of the Anterior Loop of the Inferior Alveolar Nerve in Iranians.

Science.gov (United States)

Moghddam, Maryam Rastegar; Davoudmanesh, Zeinab; Azizi, Nasim; Rakhshan, Vahid; Shariati, Mahsa

2017-10-01

The anterior loop of the inferior alveolar nerve is a sensitive anatomical feature that should be taken into account during installation of dental implants anterior to the mental foramen. This study was conducted to explore the controversy regarding prevalence and length. A total of 452 mandible quadrants of 234 patients (age: 50.1 ± 13.3 years, 113 males, 121 females) were studied using cone-beam computerized tomography. After reconstructing axial, frontal, and sagittal slices, the region between the most anterior point on the mental foramen and the most anterior part of the mandibular nerve was inspected for signs of anterior loop presence. If positive, the length of the anterior loop was measured in mm as the distance between the anterior border of mental foramen and the anterior border of the loop. Prevalence and length of the anterior loop were compared statistically between sexes and age groups. The anterior loop was observed in 106 quadrants (23.5% of 451 quadrants) of 95 patients (40.6% of 234 patients), of whom 11 had bilateral anterior loops. Prevalences were similar in males (41%) and females (39%, chi-square P =.791). The mean anterior loop length was 2.77 ± 1.56 mm (95% CI: 2.5-3.1 mm), without significant sex (regression beta = -0.159, P = .134) or age (beta = -0.059, P = .578) differences. The anterior loop might exist in about 40% of patients, regardless of their gender. The mean safe anterior distance from the anterior loop is about 3 mm + (2.5-3.1 mm) = 5.5-6.1 mm, regardless of age.

Mini-implantes ortodônticos como auxiliares da fase de retração anterior Orthodontic mini-implants assisting the anterior retraction phase

Directory of Open Access Journals (Sweden)

Carlo Marassi

2008-10-01

Full Text Available INTRODUÇÃO: os mini-implantes ortodônticos se estabeleceram como um importante método de ancoragem e vêm auxiliando os ortodontistas nas várias etapas do tratamento ortodôntico, eliminando, em grande parte, a necessidade de colaboração dos pacientes e tornando os resultados mais previsíveis. OBJETIVO: este artigo descreve os principais aspectos do uso dos mini-implantes como auxiliares da fase de retração anterior, trazendo considerações sobre suas indicações, quantidade de movimentação dos dentes anteriores, os vetores de força de retração, o controle vertical, o posicionamento dos mini-implantes, os tipos de apoio na região anterior e a força a ser utilizada. São citados os sítios de instalação mais usados para a retração anterior e abordados fatores que deverão ser controlados durante o fechamento de espaço. Por fim, são citadas algumas considerações clínicas sobre o uso dos mini-implantes nessa importante fase do tratamento ortodôntico.INTRODUCTION: The use of orthodontic mini-implants has settled as an important anchorage method and is aiding the orthodontists in the several stages of the treatment, largely eliminating the need of patients' compliance, and turning the results more predictable. AIM: This article describes the main aspects of the use of mini-implants as auxiliaries on the retraction phase of the anterior teeth, bringing considerations about their indications, amount of movement of the anterior teeth, the vectors of retraction force, the vertical control and evaluation of the incisors vestibulolingual tipping, the positioning of the mini-implants, the support types in the anterior area and the force to be applied. The placement sites best used for the anterior retraction are mentioned, and the factors that should be controlled during the space closure are approached. Lastly, some clinical considerations on the use of mini-implants in such important phase of the orthodontic treatment are

Diseño y prototipaje del álabe para un miniaerogenerador mediante impresión 3D

OpenAIRE

Roy Mota, Andrea

2017-01-01

El objetivo de este proyecto consiste en el diseño de una maqueta de álabe para un mini aerogenerador y su posterior fabricación con PLA mediante la tecnología de impresión 3D no industrial. Para conseguirlo se creó una hoja de cálculo que torna la superficie del ala; se analizó la impresora 3D y se diseñó la estructura interna del aspa para dotarlo de resistencia según sus límites de impresión de la impresora mediante el programa Siemens Unigraphics NX10; se simularon los esfuerzos y a parti...

Mapas de Entornos Mediante Navegacion Difusa y Sistema de Teleoperacion de una Plataforma Pioneer P3-DX

Directory of Open Access Journals (Sweden)

Daniel Granda

2013-11-01

Full Text Available El presente proyecto describe el diseno e implementacion de aplicaciones de Teleoperacion, Adquisicion de Datos, Control Difuso de Velocidad y Mapeo de Entornos en 2D, para la plataforma movil Pioneer P3-DX mediante el uso de sonares, odometrıa y software libre GNU/Linux. El proyecto brinda una guıa para utilizar los conceptos de programacion en Python, que permite crear aplicaciones de manera versatil mediante el uso de librerıas como: GTK para el desarrollo del entorno grafico, PYFUZZY para el desarrollo del controlador difuso de velocidad y OPENCV para mostrar los mapas del entorno.

Anterior Knee Pain (Chondromalacia Patellae).

Science.gov (United States)

Garrick, James G.

1989-01-01

This article presents a pragmatic approach to the definition, diagnosis, and management of anterior knee pain. Symptoms and treatment are described. Emphasis is on active involvement of the patient in the rehabilitation exercise program. (IAH)

Correspondencias múltiples entre índices morfológicos cefálicos y postcefálicos en aborígenes del Gran Chaco Sudamericano

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Colantonio, Sonia Edith

2002-01-01

Full Text Available Los comportamientos correlativos de los índices cefálicos y postcefálicos en los análisis de relaciones intergrupales no han sido suficientemente explorados hasta hoy. La escasez de datos de ambos segmentos corporales ha limitado este tipo de estudios. A la vez, otras estimaciones de la "forma" mediante ajustes del "tamaño" han sido propuestas, dándose por sentada su superioridad al uso de los índices. En este ensayo se analizan la correspondencia entre formas y la eficiencia discriminante de los índices, aprovechando los datos de la colección Vellard que comprende 1734 aborígenes provenientes de 12 grupos étnicos del Gran Chaco Sudamericano. Se empleó para ello el Análisis de Homogeneidad (HOMALS, mediante el cual se calcularon los vectores propios y los "pesos" tanto de las variables (índices cuanto de los grupos en las dimensiones principales de la variación, representando gráficamente su ubicación en el sistema coordenado de las mismas. Los resultados muestran similares relaciones entre las formas de la cabeza en hombres y en mujeres, pero en éstas hay una neta independencia entre las categorías de la porción neural y las de la facial. La mayor diferenciación morfológica de los chaquenses se registra en esas regiones cefálicas, mientras que a nivel del segmento postcefálico las etnias son más semejantes. Las relaciones morfológicas interétnicas son diferentes según el sexo considerado. En el interior de cada sexo, la topología obtenida es idéntica ya se tome en cuenta solamente la cabeza o ésta conjuntamente con el cuerpo.

Polymerase chain reaction in unilateral cases of presumed viral anterior uveitis.

Science.gov (United States)

Shoughy, Samir S; Alkatan, Hind M; Al-Abdullah, Abdulelah A; El-Khani, Albarah; de Groot-Mijnes, Jolanda Df; Tabbara, Khalid F

2015-01-01

Anterior uveitis is the most common form of intraocular inflammation. The main aim of this study was to determine the viral etiology in patients with unilateral cases of anterior uveitis. A total of 12 consecutive patients with the diagnosis of idiopathic unilateral anterior uveitis were included prospectively. Aqueous specimens were obtained from each patient by anterior chamber paracentesis and subjected to the detection of viral DNA/RNA genome by polymerase chain reaction assay for herpes simplex virus, varicella zoster virus, cytomegalovirus, Epstein-Barr virus, and rubella virus. There were six male and six female patients. The mean age was 43 years, with an age range of 11-82 years. All 12 cases presented with unilateral anterior uveitis. In four (33%) patients, polymerase chain reaction was positive for viral genome. Two patients were positive for herpes simplex virus type 1, one patient was positive for cytomegalovirus and one for Epstein-Barr virus. Recent molecular diagnostic assays would help in the identification of the causative agent in patients with unilateral anterior uveitis.

The Palatal Approach to Distraction Osteogenesis of the Anterior Maxillary Alveolus.

Science.gov (United States)

Bell, Robert E

2015-07-01

This report describes the palatal approach to gain access for osteodistraction of the anterior maxilla to improve the vector of force during distraction. This case report illustrates a novel approach to anterior maxillary osteodistraction. The palatal approach allows the maxillary segment to be moved anteriorly and inferiorly. This is in contrast to the buccal approach, in which the palatal tissue creates a vector of force toward the palate. The vascular pedicle for the transport segment is the labial mucosa and musculature. In the present case, the alveolar segment was advanced 3.6 mm anteriorly and 12.2 mm inferiorly as measured by pre- and postoperative computed tomograms. This patient with a large vertical alveolar defect and high smile line had successful restoration with dental implants. The result has been stable for 14 months. In this case, the palatal approach to the anterior maxillary osteotomy was shown to be an effective method of reconstructing a large vertical anterior defect. Copyright © 2015 American Association of Oral and Maxillofacial Surgeons. Published by Elsevier Inc. All rights reserved.

Diseño óptimo de un disipador de calor para luminaria LED mediante moderación modelación computacional

Directory of Open Access Journals (Sweden)

Daniel Cahue Díaz

2014-01-01

Full Text Available En el presente trabajo se desarrolla una selección de materiales y simulación térmica en el diseño de disipadores de calor para sistemas de iluminación de estado sólido (SSL mejor conocidos como luminarias LEDs. Se desarrolló un modelo matemático con la capacidad de predecir el comportamiento térmico de la luminaria cuando se encuentra en operación. El modelo matemático fue resuelto mediante un software de distribución libre el cual permite resolver ecuaciones diferenciales mediante el método de elemento finito. Los resultados obtenidos en el modelo matemático planteado fueron validados con los resultados obtenidos mediante experimentación usando imágenes termográficas.

Acute anterior uveitis following intravitreal bevacizumab but not subsequent ranibizumab

Directory of Open Access Journals (Sweden)

Antonopoulos C

2011-11-01

Full Text Available Christina Antonopoulos1, Maxwell Stem2, Grant M Comer21Department of Ophthalmology, Boston University, Boston, MA, USA; 2WK Kellogg Eye Center, Department of Ophthalmology, University of Michigan, Ann Arbor, MI, USAPurpose: Previous reports have identified noninfectious uveitis as a potential sequela following both intravitreal bevacizumab and ranibizumab injections. We present two unique cases of acute anterior uveitis following intravitreal bevacizumab that did not occur with subsequent ranibizumab injections.Methods: Case report.Conclusion: These cases may reflect differences in the etiology of anterior uveitis following intravitreal bevacizumab and ranibizumab. Given these differences, it may be reasonable to offer ranibizumab to patients who have experienced presumed bevacizumab-induced anterior uveitis.Keywords: adverse effect, age-related macular degeneration, anterior uveitis, bevacizumab, ranibizumab, uveitis

El sistema mexicano del club de clientes como alternativa de desarrollo para distribuidores independientes de suplementos nutricionales en Panamá 2004-2005.

Directory of Open Access Journals (Sweden)

Graciela López Méndez

2016-02-01

Full Text Available En este trabajo se demuestra, mediante un trabajo experimental participativo, que el sistema mexicano del club de clientes (smcc es una alternativa de desarrollo para los distribuidores independientes de suplementos nutricionales bajo el sistema multinivel en otras regiones. El objetivo se cumple al constatar que los distribuidores en Panamá que aceptaron participar en el plan piloto de adopción del smcc pudieron al final del periodo de experimentación aumentar sus ventas directas, así como su ingreso por concepto de regalías. El smcc se desarrolló en México para ampliar el mercado hacia segmentos de poder adquisitivo limitado mediante la venta de porciones diarias a precios accesibles, en vez de comercializar sólo paquetes de productos que significan un desembolso alto en una sola exhibición. Esta modalidad, además de aumentar la venta directa facilita el reclutamiento de nuevos distribuidores, por lo que también mejoran los ingresos por las ventas de los distribuidores de su red.

Passage of an Anterior Odontoid Screw through Gastrointestinal Tract.

Science.gov (United States)

Leitner, L; Brückmann, C I; Gilg, M M; Bratschitsch, G; Sadoghi, P; Leithner, A; Radl, R

2017-01-01

Purpose . Anterior screw fixation has become a popular surgical treatment method for instable odontoid fractures. Screw loosening and migration are a rare, severe complication following anterior odontoid fixation, which can lead to esophagus perforation and requires revision operation. Methods . We report a case of screw loosening and migration after anterior odontoid fixation, which perforated the esophagus and was excreted without complications in a 78-year-old male patient. Results . A ventral dislocated anterior screw perforated through the esophagus after eight years after implantation and was excreted through the gastrointestinal (GI) tract. At a 6-month follow-up after the event the patient was asymptomatic. Conclusion . Extrusion via the GI tract is not safe enough to be considered as a treatment option for loosened screws. Some improvements could be implemented to prevent such an incident. Furthermore, this case is a fine example that recent preoperative imaging is mandatory before revision surgery for screw loosening.

Passage of an Anterior Odontoid Screw through Gastrointestinal Tract

Directory of Open Access Journals (Sweden)

L. Leitner

2017-01-01

Full Text Available Purpose. Anterior screw fixation has become a popular surgical treatment method for instable odontoid fractures. Screw loosening and migration are a rare, severe complication following anterior odontoid fixation, which can lead to esophagus perforation and requires revision operation. Methods. We report a case of screw loosening and migration after anterior odontoid fixation, which perforated the esophagus and was excreted without complications in a 78-year-old male patient. Results. A ventral dislocated anterior screw perforated through the esophagus after eight years after implantation and was excreted through the gastrointestinal (GI tract. At a 6-month follow-up after the event the patient was asymptomatic. Conclusion. Extrusion via the GI tract is not safe enough to be considered as a treatment option for loosened screws. Some improvements could be implemented to prevent such an incident. Furthermore, this case is a fine example that recent preoperative imaging is mandatory before revision surgery for screw loosening.

Modelo de negocio para mejorar la calidad de vida mediante un bar de nutrición en los gimnasios de Crossfit de Guayaquil.

OpenAIRE

Mancheno Bravo, María Soledad

2015-01-01

Esta tesis se apoya en la preocupación latente por el cuidado de la salud debido a los innumerables problemas de generados a causa del sobrepeso; inspirándose en la comunidad de personas de la ciudad de Guayaquil que realizan CrossFit, con un notable interés de mejorar su estilo de vida, se propone analizar la necesidad de este segmento del mercado. Estudiar los servicios existentes complementarios a esta disciplina y proponer un modelo de negocios que atienda dicha necesidad. Este modelo de ...

Histologic Anatomy of the Anterior Vagina and Urethra.

Science.gov (United States)

Mazloomdoost, Donna; Westermann, Lauren B; Mutema, George; Crisp, Catrina C; Kleeman, Steven D; Pauls, Rachel N

Vaginal and urethral histology is important to understanding the pathophysiology of the pelvic floor. En bloc removal of 4 female cadaveric pelvises was performed, with 18 to 25 serial sections obtained from each. The vaginal and urethral lengths were divided into distal and proximal sections; urethra was divided into anterior and posterior segments as well. Innervation and vasculature were qualified as small and large and quantified per high-power field. The mean vaginal length was 7.45 cm, and the mean urethral length was 3.38 cm. A distinct vaginal fibromuscular layer was noted, without evidence of a dense sheet of continuous collagen. An epithelial, lamina propria, and muscular layer surrounded the urethral lumen. Adipose and loose fibroconnective tissue separated the urethra from the anterior vagina in 41% of slides. Nerves and vasculature were concentrated in the lamina propria. More small nerves and vessels were grossly seen compared with larger counterparts in both the vagina and urethra. No significant differences in layer thickness, innervation, or vasculature were observed along the vaginal length. The posterior urethra had greater innervation than did the anterior (P = 0.012). The distal posterior urethra had more large vessels than did the proximal posterior urethra (P = 0.03). No other differences were noted in urethral sections. A vaginal fibromuscular layer was confirmed, refuting a true fascia. Innervation and vasculature were quantitatively the same along the anterior vagina. However, the posterior urethra had greater innervation than did anterior and is most innervated proximally. Nerve and vascular histology may relate to pelvic floor disorder etiology.

Pembuatan Cantilever Bridge Anterior Rahang Atas sebagai Koreksi Estetik

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Yusrina Sumartati

2012-12-01

Full Text Available Latar belakang. Kehilangan gigi anterior rahang atas mengakibatkan gangguan fungsi fonetik dan estetik. Gangguan fungsi estetik menyebabkan pasie menjadi rendah diri. Kondisi ini dapat diatasi oleh dokter gigi, salah satunya dengan pembuatan cantilever bridge. Tujuan. Penulisan ini yaitu untuk memberi informasi bahwa pada kasus kehilangan gigi-gigi anterior rahang atas dengan space yang telah menyempit dan malposisi gigi dapat dibuatkan protesa berupa gigi tiruan cekat dengan desain cantilever bridge. Kasus dan perawatan. Laporan kasus ini membahas tentang pasien perempuan umur 39 tahun yang datang ke Rumah Sakit Gigi dan Mulut Prof. Soedomo, dengan keluhan merasa kurang percaya diri karena gigi depan rahang atas hilang sejak 5 tahun yang lalu akibat kecelakaan. Gigi-gigi anterior rahang atas yang masih ada mengalami malposisi akibat pemakaian gigi tiruan sebagian lepasan yang tidak baik. Perawatan yang dilakukan adalah dengan pembuatan cantilever bridge pada gigi 11, 12, 13 dan 21, 22, 23. Kesimpulan. Gangguan fungsi estetik pada gigi anterior rahang atas dapat diatasi dengan pembuatan cantilever bridge.   Background. Maxillary anteriortooth loss resulting in impaired function of phonetic and aesthetic. Impaired function of aesthetic cause patients to become self conscious. This condition can be treated by a dentist, one with a cantilever bridge. Purpose. To inform that in case of missing anterior teeth of the upper jaw with a space that has been narrowed, and malposition of teeth can be made prosthesis denture fixed bridge with a cantilever design. Case and treatment. This case report discusses the 39 years old female patient who came to he Dental Hospital Prof. Soedomo, with complaints of feeling less confident due to the maxillary front teeth missing since 5 years ago due to an accident. Anterior teeth of the upper jaw are still experiencing malposition due to the use of removable partial dentures are not good. The treatment is done is by

Landmarks for Identifying the Suprascapular Foramen Anteriorly: Application to Anterior Neurotization and Decompressive Procedures.

Science.gov (United States)

Manouvakhova, Olga V; Macchi, Veronica; Fries, Fabian N; Loukas, Marios; De Caro, Raffaele; Oskouian, Rod J; Spinner, Robert J; Tubbs, R Shane

2018-02-01

Additional landmarks for identifying the suprascapular nerve at its entrance into the suprascapular foramen from an anterior approach would be useful to the surgeon. To identify landmarks for the identification of this hidden site within an anterior approach. In 8 adult cadavers (16 sides), lines were used to connect the superior angle of the scapula, the acromion, and the coracoid process tip thus creating an anatomic triangle. The suprascapular nerve's entrance into the suprascapular foramen was documented regarding its position within this anatomical triangle. Depths from the skin surface and specifically from the medial-most point of the clavicular attachment of the trapezius to the suprascapular nerve's entrance into the suprascapular foramen were measured using calipers and a ruler. The clavicle was then fractured and retracted superiorly to verify the position of the nerve's entrance into the suprascapular foramen. From the trapezius, the nerve's entrance into the foramen was 3 to 4.2 cm deep (mean, 3.5 cm). The mean distance from the tip of the corocoid process to the suprascapular foramen was 3.8 cm. The angle best used to approach the suprascapular foramen from the surface was 15° to 20°. Based on our study, an anterior suprascapular approach to the suprascapular nerve as it enters the suprascapular foramen can identify the most medial fibers of the trapezius attachment onto the clavicle and insert a finger at an angle of 15° to 20° laterally and advanced to an average depth of 3.5 cm. Copyright © 2017 by the Congress of Neurological Surgeons

Laparoscopic-assisted repair of Morgagni–Larrey hernia by anterior ...

African Journals Online (AJOL)

Various techniques have been described to repair Morgagni–Larrey hernia. There is still concerns on the sufficiency of a simple laparoscopic anterior abdominal wall fixation. We aim to report of two children undergoingthe laparoscopic-assisted anterior abdominal wall repair for Morgagni–Larrey hernia, and to discuss this ...

Germ Cell Tumor Located in the Midline of the Anterior Neck

OpenAIRE

Tatyana PIRDOPSKA; Ivan TERZIEV; Sv. HRISTOVA; W. MLADENOVSKY; R. PETKOV

2011-01-01

Primary germ cell tumors involving midline of the anterior neck are extremely rare. Here we report a 68-year-old male who was operated due to a mass lesion in the anterior neck with infiltration of the isthmus of the thyroid gland. Histopathological examination revealed a germ cell tumor with extragonadal localization in the anterior neck infiltrating the isthmus of the thyroid gland.

IMPACTOS DA ATIVIDADE TURÍSTICA À ECONOMIA MUNICIPAL DE ALTO PARAÍSO DE GOIÁS, BRASIL

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Tathiana Rodrigues Salgado

2014-01-01

Full Text Available El turismo en Alto Paraíso de Goiás tiene un papel importante en la economía de la ciudad, ya sea moviendo las tiendas locales o mediante la generación de puestos de trabajo directos y de temporada. Sin embargo, una vertiente poco explorada por los administradores municipales son los ingresos fiscales relacionados con este segmento económico, como se ve en la investigación. El flujo de turistas, contribuye poco a la formación de las finanzas municipales, principalmente debido a la falta de una legislación específica para mejorar el uso de las actividades turísticas.

Sonourethrography in the evaluation of anterior urethral strictures

International Nuclear Information System (INIS)

Kim, Jong Chul; Kwag, Jin Geun

1994-01-01

To determine the reliability of sonourethrography (SUG) in the evaluation of male anterior urethral strictures. Both SUG with retrograde saline infusion and retrograde urethrography (RUG) were performed in 5 young normal volunteers and 20 patients with symptoms of impaired urine flow. Those findings were compared with urethroscopic and operative findings in all patients. SUG was more accurate in the evaluation of the stricture length and degree than RUG in 7 patients with anterior urethral strictures, when compared with their subsequent open urethroplasty findings. Only SUG could classify the degree of spongiofibrosis surrounding the strictures in 15 patients. So, SUG was diagnostically as efficacious as or, superior to, RUG in all 20 patients. SUG can be used as one of complementary and reliable tools for diagnosis, evaluation and follow-up of anterior urethral strictures

Refraction and eye anterior segment parameters in schizophrenic patients

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Tongabay Cumurcu

2015-06-01

Full Text Available ABSTRACT Purpose: To evaluate the difference in terms of refractive errors and anterior segment parameters between schizophrenic patients and healthy volunteers. Methods: This study compared 70 patients (48 men who were diagnosed with schizophrenia with a control group of 60 (35 men who were similar in terms of age, gender, education, and socioeconomic level. Anterior segment examination was performed using a Scheimflug system. Axial length and lens thickness (LT were measured using optic biometry. The following tests were administered to the psychiatric patient group: Brief Psychiatric Rating Scale (BPRS, Scale for the Assessment of Negative Symptoms (SANS, and Scale for the Assessment of Positive Symptoms (SAPS. Results: Mild myopia was detected in both the schizophrenic and control groups, with no statistically significant difference (p>0.005. Corneal volume (CV, anterior chamber volume (ACV, anterior chamber depth (ACD, and central corneal thickness (CCT values were lower in the schizophrenic group, and there was a statistically significant between-group difference (p=0.026, p=0.014, p=0.048, and p=0.005, respectively. LT was greater in schizophrenics, and the difference was found to be statistically significant (p=0.006. A statistically significant negative correlation was found between SAPS and cylinder values (p=0.008. The axial eye length, cylinder value, pupil diameter, mean keratometric value, and anterior chamber angle revealed no statistically significant difference between the groups (p>0.05. Conclusion: No statistically significant difference was detected in terms of refraction disorders between schizophrenics and the healthy control group, while some differences in anterior chamber parameters were present. These results demonstrate that schizophrenics may exhibit clinical and structural differences in the eye.

Changes in anterior segment morphology in response to illumination and after laser iridotomy in Asian eyes: an anterior segment OCT study

Science.gov (United States)

See, Jovina L S; Chew, Paul T K; Smith, Scott D; Nolan, Winifred P; Chan, Yiong‐Huak; Huang, David; Zheng, Ce; Foster, Paul J; Aung, Tin; Friedman, David S

2007-01-01

Aim Using the anterior segment optical coherence tomography (AS‐OCT) to quantify changes in anterior segment morphology going from light to dark and following laser iridotomy (LI). Methods Prospective observational study. 17 consecutive subjects without peripheral anterior synechiae undergoing LI were evaluated using gonioscopy and AS‐OCT. Angle configuration including angle opening distance (AOD) at 500 microns anterior to the scleral spur, AOD500, trabecular‐iris space area up to 750 microns from the scleral spur, TISA750 and the increase in angle opening going from dark to light conditions was determined. Results Both mean AOD500 and TISA750 increased nearly threefold going from dark to light. Both also significantly increased following LI (p<0.001) as did gonioscopic grading of the angle in all quadrants (p<0.001, McNemar's test). Angles were more than twice as wide on average in the dark after LI than before LI (p<0.05). Both the mean absolute change and the mean proportionate change in AOD500 and TISA750 when going from light to dark were greater after LI than before (p<0.05). Conclusion Increased illumination as well as LI resulted in significant widening of the anterior chamber angle. AS‐OCT (which does not require a water bath and can be performed with the patient at the slit lamp) identified similar magnitude changes as those previously reported using ultrasound biomicroscopy (UBM). Furthermore, the angle appears to open more both in absolute terms and and proportionate terms in response to illumination after LI. PMID:17504852

Epidermoid cyst in Anterior, Middle

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Kankane Vivek Kumar

2016-09-01

Full Text Available Epidermoid cysts are benign slow growing more often extra-axial tumors that insinuate between brain structures, we present the clinical, imaging, and pathological findings in 35 years old female patients with atypical epidermoid cysts which was situated anterior, middle & posterior cranial fossa. NCCT head revealed hypodense lesion over right temporal and perisylvian region with extension in prepontine cistern with mass effect & midline shift and MRI findings revealed a non-enhancing heterogeneous signal intensity cystic lesion in right frontal & temporal region extending into prepontine cistern with restricted diffusion. Patient was detoriated in night of same day of admission, emergency Fronto-temporal craniotomy with anterior peterousectomy and subtotal resection was done. The histological examination confirms the epidermoid cyst. The timing of ectodermal tissue sequestration during fetal development may account for the occurrence of atypical epidermoid cysts.

Examination of the sprained ankle: Anterior drawer test or arthrography

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Laehde, S.; Putkonen, M.; Puranen, J.; Raatikainen, T.

1988-11-01

The accuracy of the anterior drawer test for the diagnosis of recent lateral ligament tears in the ankle was evaluated in a series of 192 patients using surgical or arthrographic findings for reference. Considerable overlapping of results was obtained in ankles with and without ligament tear. Twenty-eight per cent of the anterior talofibular ligament tears, and 38% of the combined anterior talofibular and calcaneofibular tears were not detected, and single and combined tears could not be differentiated. It is concluded that the anterior drawer test is too unreliable as a basis for any decision regarding surgical treatment of a recent sprain. Therefore, arthrography is recommended as the method of choice in such cases of recent ankle sprain, where the need of surgery has to be supported by X-ray analysis.

Examination of the sprained ankle: Anterior drawer test or arthrography?

International Nuclear Information System (INIS)

Laehde, S.; Putkonen, M.; Puranen, J.; Raatikainen, T.

1988-01-01

The accuracy of the anterior drawer test for the diagnosis of recent lateral ligament tears in the ankle was evaluated in a series of 192 patients using surgical or arthrographic findings for reference. Considerable overlapping of results was obtained in ankles with and without ligament tear. Twenty-eight per cent of the anterior talofibular ligament tears, and 38% of the combined anterior talofibular and calcaneofibular tears were not detected, and single and combined tears could not be differentiated. It is concluded that the anterior drawer test is too unreliable as a basis for any decision regarding surgical treatment of a recent sprain. Therefore, arthrography is recommended as the method of choice in such cases of recent ankle sprain, where the need of surgery has to be supported by X-ray analysis. (orig.)

Multi drug resistant tuberculosis presenting as anterior mediastinal mass

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Parmarth Chandane

2016-01-01

Full Text Available Enlargement of the mediastinal lymphatic glands is a common presentation of intrathoracic tuberculosis (TB in children. However, usually, the mediastinal TB nodes enlarge to 2.8 ± 1.0 cm. In this report, we describe a case of anterior mediastinal lymphnode TB seen as huge mass (7 cm on computed tomography (CT thorax without respiratory or food pipe compromise despite anterior mediastinum being an enclosed space. CT guided biopsy of the mass cultured Mycobacterium TB complex which was resistant to isoniazide, rifampicin, streptomycin ofloxacin, moxifloxacin, and pyrazinamide. Hence, we report primary multi drug resistant TB presenting as anterior mediastinal mass as a rare case report.

Diferencias en la calciuria, estimada mediante el índice Ca/Cr en función del tipo de lactancia

OpenAIRE

Trigo López, Javier

2015-01-01

Se ha realizado un estudio descriptivo transversal sobre el comportamiento de la calciuria, estimada mediante el índice calcio/creatinina (ICC), en lactantes menores de 6 meses, analizando su posible relación con el tipo de alimentación (leche de fórmula o leche materna). Los resultados se obtuvieron a partir de muestras de orina de 44 lactantes sanos en los que se recoge el tipo de lactancia. El grupo alimentado mediante leche de fórmula presentó un ICC medio expresado en mg/mg de 0,59, mien...

Aproximación a la diferenciación de especies del subgénero Helcocyrtomyia (Diptera:Psychodidae, mediante morfometría tradicional y secuenciamiento de DNA mitocondrial

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N. Jaramillo

2000-02-01

Full Text Available

Usualmente la genitalia de los machos se ha utilizado para definir las diferencias interespecies dentro del subgénero Helcocyrtomyia, ya que las hembras presentan gran similitud en las formas de sus genitalias, y por tanto la diferenciación morfológica de ellas se realiza por asociación geográfica con el macho y por algunos caracteres adicionales como el grado de pigmentación del mesonoto, la longitud de los palpos y la fórmula palpal, entre otros. Los estudios de confirmación taxonómica y biología evolutiva han implementado el uso de secuenciamiento de ADNmt y morfometría como técnicas asociadas a la taxonomía tradicional. El secuenciamiento de genes mitocondriales ha mostrado separaciones exitosas entre especies cercanas, por análisis estadístico de los cambios nucleotídicos (transiciones, transversiones, deleciones, etc. estimando las relaciones filogenéticas entre ellas. De manera similar las técnicas morfométricas han logrado discriminar especies de insectos, por el análisis de caracteres poligénicos que varían en tamaño y forma. Estos caracteres permiten estimar diferencias interespecíficas atribuibles principalmente a efectos ambientales y genéticos respectivamente.

Mediante el uso de morfometría, separando el componente genético del ambiental, y del secuenciamiento de un segmento del gen mitocondrial ND4, esta propuesta tiene por objetivo contribuir a la definición de las especies del subgénero Helcocyrtomyia utilizando machos y hembras.

La morfometría se basará en las mediciones de caracteres de las alas y genitalias. Para el análisis de las variables morfométricas se empleará Análisis Multigrupo de Componentes Principales, Análisis de Componentes Principales Comunes y Análisis de

Radial head button holing: a cause of irreducible anterior radial head dislocation

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Shin, Su-Mi; Chai, Jee Won; You, Ja Yeon; Park, Jina [Seoul National University Seoul Metropolitan Government Boramae Medical Center, Department of Radiology, Seoul (Korea, Republic of); Bae, Kee Jeong [Seoul National University Seoul Metropolitan Government Boramae Medical Center, Department of Orthopedic Surgery, Seoul (Korea, Republic of)

2016-10-15

''Buttonholing'' of the radial head through the anterior joint capsule is a known cause of irreducible anterior radial head dislocation associated with Monteggia injuries in pediatric patients. To the best of our knowledge, no report has described an injury consisting of buttonholing of the radial head through the annular ligament and a simultaneous radial head fracture in an adolescent. In the present case, the radiographic findings were a radial head fracture with anterior dislocation and lack of the anterior fat pad sign. Magnetic resonance imaging (MRI) clearly demonstrated anterior dislocation of the fractured radial head through the torn annular ligament. The anterior joint capsule and proximal portion of the annular ligament were interposed between the radial head and capitellum, preventing closed reduction of the radial head. Familiarity with this condition and imaging findings will aid clinicians to make a proper diagnosis and fast decision to perform an open reduction. (orig.)

Seguimiento de trayectorias tridimensionales de un quadrotor mediante control PVA

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Silvia Estellés Martínez

2014-01-01

Full Text Available Resumen: Este trabajo presenta el modelado de un quadrotor como un sistema multicuerpo llevado a cabo mediante el software Vehicle- Sim, en el que los diferentes componentes del sistema son descritos mediante una estructura paterno-filial señalando las restricciones físicas entre ellos. Los modelos estructural y aerodinámico han sido desarrollados mediante este software, ampliamente utilizado en la simulación del comportamiento dinámico de vehículos.Sobre el modelo resultante se he desarrollado un algoritmo de control basado en la metodologia PVA con la finalidad de obtener un seguimiento de trayectoria mediante acciones de control suaves. Empleando la metodología convencional de control PVA no es posible estabilizar el vehículo en todos los rangos de posicionamiento lateral (y y longitudinal (x. En este artículo los autores muestran como esta limitación en el diseño de una estrategia de control PVA convencional es solventada con una modificación consistente en sustituir los parámetros constantes del PVA clásico por funciones dependientes del desplazamiento.El sistema de control es implementado para adecuarse a los requerimientos de las actuaciones y se diseña sobre la plataforma de simulación multidominio Simulink. Con la finalidad de obtener una importante mejora en la respuesta de posicionamiento, se im- plementa un generador de trayectorias continuas.Una vez que el modelo es desarrollado y el sistema de control implementado, los autores presentan el modelo matemático y los resultados de las simulaciones realizadas. Éstas validan el empleo tanto de la metodología de control PVA aplicada, como de la alimentación de trayectorias predefinidas, no sólo para la posición, sino también para la velocidad y aceleración. Abstract: In this work the authors present the modelling of a quadrotor as a multibody system carried out with the software VehicleSim, in which the different

Pseudoaneurysm of the Anterior Tibial Artery following Ankle Arthroscopy in a Soccer Player

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Ichiro Tonogai

2017-01-01

Full Text Available Ankle arthroscopy carries a lower risk of vascular complications when standard anterolateral and anteromedial portals are used. However, the thickness of the fat pad at the anterior ankle affords little protection for the thin-walled anterior tibial artery, rendering it susceptible to indirect damage during procedures performed on the anterior ankle joint. To our knowledge, only 11 cases of pseudoaneurysm involving the anterior tibial artery after ankle arthroscopy have been described in the literature. Here we reported a rare case of a 19-year-old soccer player who presented with pseudoaneurysm of the anterior tibial artery following ankle arthroscopy using an ankle distraction method and underwent anastomosis for the anterior tibial artery injury. Excessive distraction of the ankle puts the neurovascular structures at greater risk for iatrogenic injury of the anterior tibial artery during ankle arthroscopy. Surgeons should look carefully for postoperative ankle swelling and pain after ankle arthroscopy.

Influência do ácido acetilsalicílico, da sacarose e da temperatura na conservação in vitro de segmentos caulinares de batata Effect of acetyl salycilic acid, sucrose and temperature on in vitro storage of potato shoots

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Adriane M. da Conceição

1999-11-01

Full Text Available O presente trabalho foi realizado no Laboratório de Cultura de Tecidos da Embrapa Clima Temperado (Pelotas-RS, com o objetivo de estudar o efeito do ácido acetil salicílico (AAS, associado à sacarose e à temperatura na conservação in vitro de segmentos caulinares das cultivares de batata Baronesa e Santo Amor. Os segmentos foram inoculados em meio de cultura com sais e vitaminas de MS, acrescido de 100 mg.L-1 de mio-inositol, 6 g.L-1 ágar e com sacarose nas concentrações de 10, 30 e 50 g.L-1 combinadas com ácido acetil salicílico a 0, 3, 6, 9 e 12 mg.L-1. Após a inoculação o material foi mantido às temperaturas de10 e 25°C. O experimento constituiu-se de um fatorial AxBxCxD [temperatura (2 x sacarose (3 x AAS (5 x cultivar (2], em blocos casualizados, com quatro repetições, sendo cada explante uma parcela. O comprimento do segmento caulinar foi analisado pelo teste de Duncan e pela regressão polinomial dos fatores. As avaliações foram iniciadas 15 dias após a instalação do experimento e continuadas a cada 15 dias, sucessivamente ao longo de 180 dias. Da variável percentagem de sobrevivência do material em conservação in vitro foi calculado apenas o valor médio. A concentração de sacarose de 30 g.L-1 no meio de cultura, e a temperatura de 10°C, foram os melhores tratamentos para a melhor conservação in vitro e maior percentagem de sobrevivência dos segmentos caulinares de batata.This work was carried out at the Tissue Culture Laboratory at Embrapa Clima Temperado Pelotas-RS, Brazil, to evaluate the influence of acetyl salycilic acid (ASA, sucrose and temperature in the in vitro storage of potato shoot cvs. Baronesa and Santo Amor. The shoot segments were inoculated on a medium containing MS salts, vitamins, myo-inositol (100 mg.L-1, agar (6.0 g.L-1 and sucrose at 10, 30 and 50 g.L-1 combined with acetyl salicylic acid at 0, 3, 6, 9 and 12 mg.L-1. After inoculation the material was kept at 10 or 25°C. The

Traumatic Anterior Cerebral Artery Pseudoaneurysmal Epistaxis.

Science.gov (United States)

Liu, Qing Lin; Xue, Hao; Qi, Chang Jing; Zhao, Peng; Wang, Dong Hai; Li, Gang

2017-04-01

Pseudoaneurysmal epistaxis is a rare but emergent condition. We report a case of traumatic anterior cerebral artery pseudoaneurysmal epistaxis and review the published literature. A 49-year-old man sustained severe head trauma. He was diagnosed with multiple skull bone fractures, left subdural hematoma, subarachnoid hemorrhage, pneumocephalus, and right frontal hematoma. Subdural hematoma evacuation was done at a local hospital. In the following months, he experienced repeated epistaxis that required nasal packing to stop the bleeding. Digital subtraction angiography showed an anterior cerebral artery pseudoaneurysm protruding into the posterior ethmoid sinus. Embolization of the aneurysm was performed with microcoils, and the parent artery was occluded by thrombosis. The patient presented 1 month later with another epistaxis episode. Digital subtraction angiography showed recanalization of the parent artery and recurrence of the aneurysm. The parent artery was occluded for the second time with coils and Onyx embolic agent. Pseudoaneurysmal epistaxis is rare, and this is the first report of an anterior cerebral artery pseudoaneurysm that manifested with epistaxis. Endovascular intervention has become the first choice of treatment for this disease. The high recurrence rate is the main disadvantage of endovascular intervention. Aneurysm trapping with bypass surgery is another treatment option. Copyright © 2016 Elsevier Inc. All rights reserved.

Anterior cruciate ligament ganglion: case report

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André Pedrinelli

Full Text Available CONTEXT: A ganglion is a cystic formation close to joints or tendinous sheaths, frequently found in the wrist, foot or knee. Intra-articular ganglia of the knee are rare, and most of them are located in the anterior cruciate ligament. The clinical picture for these ganglia comprises pain and movement restrictions in the knee, causing significant impairment to the patient. Symptoms are non-specific, and anterior cruciate ligament ganglia are usually diagnosed through magnetic resonance imaging or arthroscopy. Not all ganglia diagnosed through magnetic resonance imaging need to undergo surgical treatment: only those that cause clinical signs and symptoms do. Surgical results are considered good or excellent in the vast majority of cases. CASE REPORT: A 29-year-old male presented with pain in the left knee during a marathon race. Physical examination revealed limitation in the maximum range of knee extension and pain in the posterior aspect of the left knee. Radiographs of the left knee were normal, but magnetic resonance imaging revealed a multi-lobed cystic structure adjacent to the anterior cruciate ligament, which resembled a ganglion cyst. The mass was removed through arthroscopy, and pathological examination revealed a synovial cyst. Patient recovery was excellent, and he resumed his usual training routine five months later.

Neuropatia óptica isquêmica anterior e poliarterite nodosa: relato de caso Anterior ischemic optic neuropathy and polyarteritis nodosa: case report

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Christie Michelle Graf

2006-02-01

Full Text Available Descreve-se uma paciente com diagnóstico de poliarterite nodosa, em tratamento com citostáticos e corticosteróides que desenvolveu neuropatia óptica isquêmica anterior, uma manifestação considerada bastante rara para esta doença.We describe a patient with polyarteritis nodosa being treated with cytostatics and corticosteroids who developed an anterior ischemic optic neuropathy, a rare manifestation of this pathology.

Segmental hair mercury evaluation of a single family along the Upper Madeira Basin, Brazilian Amazon Avaliação de mercúrio em segmentos de cabelo dos indivíduos de uma única família residente na Bacia do Alto Madeira, Amazônia Brasileira

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Ana Amélia Peixoto Boischio

2000-09-01

Full Text Available Mercury pollution (MeHg up the aquatic food chains in the Amazonian ecosystems has been a major concern in environmental health. Riverside people (ribeirinhos along the Upper Madeira river are heavy fish eaters. Hair is the best biomarker for MeHg exposure. By assuming a constant hair growth rate, it is possible to evaluate a temporal profile of Hg exposure over the recent defined past. In this paper we present the segmental total hair Hg concentrations from a single family from which some of the 10 persons investigated had high hair Hg concentrations (peak of 339 ppm. We also presented the hair MeHg content from 4 out of the 10 family members investigated. There was a wide variation in total hair Hg concentrations (8 to 339 ppm among these individuals, who were mostly sharing their meals; there was also a wide variation in total Hg concentrations in the same individual over time (136 to 274 ppm. Hg speciation showed a mean and standard deviation in the MeHg content of 62% and 6%, respectively. The wide variation in total hair Hg concentration strongly indicated that it is possible to mitigate critical Hg exposure levels by conducting a fish advisory.A poluição por mercúrio orgânico (MeHg das cadeias alimentares aquáticas nos ecossistemas amazônicos constitui tema de relevância na saúde ambiental. O MeHg pode chegar às populações humanas mediante o consumo de peixe. Os ribeirinhos do Alto Madeira consomem grandes quantidades de peixe. O cabelo é o melhor biomarcador para exposição ao MeHg; é possível também assumir uma taxa constante de crescimento do cabelo, para verificar o comportamento das exposições no passado recente. Neste trabalho apresentamos as concentrações de Hg total (máxima de 339 ppm em segmentos de 3 cm de cabelo de dez pessoas de uma única família. Apresentamos também os percentuais de MeHg nas amostras de cabelo de quatro pessoas, dentre as dez em estudo. Nessa família, foi observada uma grande varia

A 3-year follow-up after anterior colporrhaphy compared with collagen-coated transvaginal mesh for anterior vaginal wall prolapse

DEFF Research Database (Denmark)

Rudnicki, Martin; Laurikainen, E; Pogosean, R

2016-01-01

departments of obstetrics and gynaecology in Norway, Sweden, Finland, and Denmark. POPULATION: A total of 138 women, of 55 years of age or older, admitted for stage ≥2 anterior vaginal wall prolapse. METHODS: The women scheduled for primary anterior vaginal wall prolapse surgery were randomised between...... the groups was observed regarding PFIQ-7, PFDI-20, and Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire (PISQ-12) scores. The number of mesh exposures did not change during the study period and all exposures were minor. CONCLUSION: Our study demonstrates that although the objective outcome...

The anterior cruciate ligament-lateral meniscus complex: A histological study.

Science.gov (United States)

Furumatsu, Takayuki; Kodama, Yuya; Maehara, Ami; Miyazawa, Shinichi; Fujii, Masataka; Tanaka, Takaaki; Inoue, Hiroto; Ozaki, Toshifumi

2016-01-01

The anterior root of the lateral meniscus (LM) dives underneath the tibial attachment of the anterior cruciate ligament (ACL). Although the distinct role of meniscal attachments has been investigated, the relationship between the LM anterior insertion (LMAI) and ACL tibial insertion (ACLTI) remains unclear. This study histologically analyzed the LMAI and ACLTI. Samples were divided into four regions in an anterior-to-posterior direction. Histological measurements of these insertion sites were performed using safranin O-stained coronal sections. Distribution and signal densities of type I and II collagen were quantified. The ACLTI and LMAI formed the ACL-LM complex via fiber connections. The anterior part of the ACLTI had a widespread attachment composed of dense fibers. Attachment fibers of the LMAI became dense and wide gradually at the middle-to-posterior region. The ACL-LM transition zone (ALTZ) was observed between the LMAI and the lateral border of the ACLTI at the middle part of the ACL tibial footprint. Type II collagen density of the LMAI was higher than that of the ACLTI and ALTZ. Our results can help create an accurate tibial bone tunnel within the dense ACL attachment during ACL reconstruction surgery.

Involuntary masturbation and hemiballismus after bilateral anterior cerebral artery infarction.

Science.gov (United States)

Bejot, Yannick; Caillier, Marie; Osseby, Guy-Victor; Didi, Roy; Ben Salem, Douraied; Moreau, Thibault; Giroud, Maurice

2008-02-01

Ischemia of the areas supplied by the anterior cerebral artery is relatively uncommon. In addition, combined hemiballismus and masturbation have rarely been reported in patients with cerebrovascular disease. We describe herein a 62-year-old right-handed man simultaneously exhibiting right side hemiballismus and involuntary masturbation with the left hand after bilateral infarction of the anterior cerebral artery territory. Right side hemiballismus was related to the disruption of afferent fibers from the left frontal lobe to the left subthalamic nucleus. Involuntary masturbation using the left hand was exclusively linked to a callosal type of alien hand syndrome secondary to infarction of the right side of the anterior corpus callosum. After 2 weeks, these abnormal behaviours were completely extinguished. This report stresses the wide diversity of clinical manifestations observed after infarction of the anterior cerebral artery territory.

SÍNTESIS DE ÓXIDOS TIPO PEROVSKITA MEDIANTE POLIMERIZACIÓN CON ÁCIDO CÍTRICO Y PROPIÓNICO

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Jairo Gómez Cuaspud

2010-03-01

Full Text Available En este trabajo se describe la preparación de la perovskita La0,75Sr0,25Co0,5Fe0,5O3 (LaSrCoFeO, empleando una ruta de química húmeda, mediante la polimerización con ácido cítrico y propiónico, con el propósito de obtener materiales para potenciales aplicaciones como membranas de purificación de oxígeno y como materiales electródicos en celdas de combustible de óxido sólido (SOFC. Para ello, los sólidos se caracterizaron mediante difracción de rayos X (DRX y microscopia electrónica de barrido (SEM, con lo que se obtuvo información sobre la formación y pureza de fases, la morfología, la estructura y las propiedades superficiales de cada sistema, indicando que es posible obtener sólidos con una distribución de grano homogéneo, textura y relieve característicos, en cuyo contexto el método que involucra la polimerización con ácido cítrico mostró los mejores resultados. La composición global se determinó mediante microanálisis de rayos X de energía dispersiva (EDX, y se señaló una buena concordancia entre las composiciones propuestas y obtenidas. La caracterización realizada sugiere la presencia de pequeñas cantidades de carbono y algunos óxidos de lantano, estroncio y cobalto como principales contaminantes, específicamente en la muestra obtenida mediante la polimerización con ácido propiónico.

Glaucoma anterior chamber morphometry based on optical Scheimpflug images.

Science.gov (United States)

Alonso, Ruiz Simonato; Ambrósio Junior, Renato; Paranhos Junior, Augusto; Sakata, Lisandro Massanori; Ventura, Marcelo Palis

2010-01-01

To compare the performance of gonioscopy and noncontact morphometry with anterior chamber tomography (High Resolution Pentacam - HR) using optical Scheimpflug images in the evaluation of the anterior chamber angle (ACA). Transversal study. 112 eyes from 74 subjects evaluated at the Glaucoma Department, Fluminense Federal University, underwent gonioscopy and Pentacam HR. Using gonioscopy, the ACA was graded using the Shaffer Classification (SC) by a single experienced examiner masked to the Pentacam HR findings. Narrow angle was determined in eyes in which the posterior trabecular meshwork could not be seen in two or more quadrants on non-indentation gonioscopy (SC Grade 2 or less). Pentacam HR images of the nasal and temporal quadrants were evaluated by custom software to automatically obtain anterior chamber measurements, such as: anterior chamber angle (ACA), anterior chamber volume (ACV) and anterior chamber depth (ACD). Based on gonioscopy results, 74 (60.07%) eyes of patients classified as open-angle (SC 3 and 4) and 38 (33.93%) eyes of patients classified as narrow-angle (SC 1 and 2). Noncontact morphometry with Scheimpflug images revealed a mean ACA of 39.20 ± 5.31 degrees for open-angle and 21.18 ± 7.98 degrees for narrow-angle. The open-angle group showed significant greater ACV and ACD values when compared to narrow-angle group (ACV of 193 ± 36 mm³ vs. 90 ± 25 mm³, respectively, p<0.001; and ACD of 3,09 ± 0,42 mm vs. 1,55 ± 0,64 mm, respectively, p<0.0001.). In screening eyes with open-angle and narrow-angle with the Pentacam ACA of 20º (SC Grade 2) using the ROC curves, the analysis showed 52.6% of sensitivity and 100% of specificity. The Pentacam showed ability in detecting eyes at risk for angle closure analyzing ACV and ACD.

Role of Fusiform and Anterior Temporal Cortical Areas in Facial Recognition

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Nasr, Shahin; Tootell, Roger BH

2012-01-01

Recent FMRI studies suggest that cortical face processing extends well beyond the fusiform face area (FFA), including unspecified portions of the anterior temporal lobe. However, the exact location of such anterior temporal region(s), and their role during active face recognition, remain unclear. Here we demonstrate that (in addition to FFA) a small bilateral site in the anterior tip of the collateral sulcus (‘AT’; the anterior temporal face patch) is selectively activated during recognition of faces but not houses (a non-face object). In contrast to the psychophysical prediction that inverted and contrast reversed faces are processed like other non-face objects, both FFA and AT (but not other visual areas) were also activated during recognition of inverted and contrast reversed faces. However, response accuracy was better correlated to recognition-driven activity in AT, compared to FFA. These data support a segregated, hierarchical model of face recognition processing, extending to the anterior temporal cortex. PMID:23034518

Activation of anterior paralimbic structures during guilt-related script-driven imagery.

Science.gov (United States)

Shin, L M; Dougherty, D D; Orr, S P; Pitman, R K; Lasko, M; Macklin, M L; Alpert, N M; Fischman, A J; Rauch, S L

2000-07-01

Several recent neuroimaging studies have examined the neuroanatomical correlates of normal emotional states, such as happiness, sadness, fear, anger, anxiety, and disgust; however, no previous study has examined the emotional state of guilt. In the current study, we used positron emission tomography and the script-driven imagery paradigm to study regional cerebral blood flow (rCBF) during the transient emotional experience of guilt in eight healthy male participants. In the Guilt condition, participants recalled and imagined participating in a personal event involving the most guilt they had ever experienced. In the Neutral condition, participants recalled and imagined participating in an emotionally neutral personal event. In the Guilt versus Neutral comparison, rCBF increases occurred in anterior paralimbic regions of the brain: bilateral anterior temporal poles, anterior cingulate gyrus, and left anterior insular cortex/inferior frontal gyrus. These results, along with those of previous studies, are consistent with the notion that anterior paralimbic regions of the brain mediate negative emotional states in healthy individuals.

Orientação para o Mercado no Segmento Hoteleiro: o caso português

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Mario Barata Raposo

2010-07-01

Full Text Available Resumo O objectivo deste estudo foi medir o grau de orientação para o mercado dos maiores grupos hoteleiros de Portugal. Após uma breve explanação sobre a orientação para o mercado e o segmento hoteleiro em Portugal apresentou-se um estudo empírico realizado junto dos maiores 20 grupos de hotéis de Portugal, utilizando como instrumento de colecta de dados, a tradicional escala Markor (Market orientation adaptada ao sector hoteleiro. Constatou-se nas organizações investigadas uma boa capacidade de geração de informações de mercado e resposta ao mercado. Porém os resultados obtidos com o constructo da disseminação de informações de mercado ficaram abaixo das expetactivas. Portanto, o desafio actual para as principais redes de hotéis de Portugal é propiciar a melhoria da disseminação interna das informações que os profissionais de marketing recolhem junto ao mercado. Palavras-chave: gestão do marketing; orientação para o mercado; markor; sector hoteleiro em Portugal. Abstract The objective of this study was to measure level of orientation for the market of the largest hotel groups of Portugal. After a brief explanation on the market orientation and the hotel segment in Portugal an empiric study was presented performed with the largest groups of 20 hotels of Portugal, using as an instrument of collection data, the traditional Markor scale (market orientation adapted to the hotel sector. It was found in the investigated organizations a good capacity to generate market information and response to the market. However the results obtained with the construct of the dissemination of market information were below the expectations. So the current challenge for the main networks of hotels in Portugal is to improve the internal dissemination of information that marketing professionals gathered at the market. Keywords: marketing management, orientation to the market, markor, hotel sector in Portugal.

Comunicación política en la red social Facebook: segmento rusoparlante 

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M Pilgun

2015-11-01

Full Text Available Introducción. El presente artículo expone el análisis de las características de la comunicación política en el segmento rusoparlante de la red social Facebook a base de grupos políticamente activos y sus actores. Al contrario de lo habitual en los EEUU y otros países, los usuarios de blogs rusos prefieren plataformas que combinan elementos típicos de un blog y los de las redes sociales tipo Facebook. Los datos fueron recogidos en un momento político complicado para Rusia (rebeldía en Ucrania lo que avivó la actividad de la oposición rusa y los procesos manipuladores en las redes sociales rusas. Objetivos. El objetivo era clasificar los actores políticamente activos de Facebook ruso y analizar su comportamiento sociolingüístico. Metodología. Se efectuó un análisis interdisciplinar de los grupos políticos (N 200 y actores (N 291 durante enero-mayo 2014. Resultados. Según sus opiniones políticas los actores principales fueron clasificados como oficiales-gubernamentales, de oposición y nacionalistas y juzgando por su actividad como proyectores de espacio comunicativo, manipuladores, grafómanos y autores de Clusters locales. Su comportamiento comunicativo y verbal también ha sido analizado donde fueron identificadas identidades virtuales específicas compartidas. Discusión y conclusiones. Desde que las redes sociales están siendo utilizadas cada vez más con fines políticos el análisis de los procesos sociolingüísticos en las comunidades virtuales activas políticamente ha adquirido mucha importancia tanto en Rusia, como en el resto del mundo. Como la perspectiva del desarrollo futuro del presente estudio se contempla la detección de la relación entre la actividad comunicativa de los actores online y offline dentro de los grupos señalados.

Influência da relação espacial (anteroposterior e transversal) dos segmentos maxilares prévio à queiloplastia sobre o índice oclusal em pacientes com fissura completa de lábio e palato unilateral

OpenAIRE

Gleisieli Carla Petelinkar Baessa Cardoso

2013-01-01

Introdução: Sabe-se que as cirurgias primárias de lábio e palato em indivíduos com fissura transforame incisivo unilateral (FTIU) provoca inibição do crescente deslocamento da base maxilar, bem como da região dentoalveolar. No entanto, a maxila dividida em dois segmentos diferentes, com as condições anatomicas variadas, assim como as alterações transversais e ântero-posterior, pode ser um dos fatores etiológicos para proporcionar deficiência maxilar e dentoalveolar. Proposição: Este estudo te...

Late Results of Anterior Cervical Discectomy and Fusion with Interbody Cages

OpenAIRE

Da?l?, Murat; Er, Uygur; ?im?ek, Serkan; Bavbek, Murad

2013-01-01

Study Design Retrospective analysis. Purpose To evaluate the effectiveness of anterior cervical discectomy with fusion for degenerative cervical disc disease. Overview of Literature Anterior spinal surgery originated in the mid-1950s and graft for fusion was also employed. Currently anterior cervical microdiscectomy and fusion with an intervertebral cage is a widely accepted procedure for treatment of cervical disc hernia. Artificial grafts and cages for fusion are preferred because of their ...

Polymerase chain reaction in unilateral cases of presumed viral anterior uveitis

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Shoughy SS

2015-12-01

Full Text Available Samir S Shoughy,1 Hind M Alkatan,2,4 Abdulelah A Al-Abdullah,2 Albarah El-Khani,2 Jolanda DF de Groot-Mijnes,3 Khalid F Tabbara1,4,5 1Department of Ophthalmology, The Eye Center and The Eye Foundation for Research in Ophthalmology, 2Department of Pathology & Laboratory Medicine and Uveitis Division, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia; 3Department of Virology and Ophthalmology, University Medical Center Utrecht, Utrecht, the Netherlands; 4Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia; 5The Wilmer Ophthalmological Institute of The Johns Hopkins University School of Medicine, Baltimore, MD, USA Background and objectives: Anterior uveitis is the most common form of intraocular inflammation. The main aim of this study was to determine the viral etiology in patients with unilateral cases of anterior uveitis.Patients and methods: A total of 12 consecutive patients with the diagnosis of idiopathic unilateral anterior uveitis were included prospectively. Aqueous specimens were obtained from each patient by anterior chamber paracentesis and subjected to the detection of viral DNA/RNA genome by polymerase chain reaction assay for herpes simplex virus, varicella zoster virus, cytomegalovirus, Epstein–Barr virus, and rubella virus.Results: There were six male and six female patients. The mean age was 43 years, with an age range of 11–82 years. All 12 cases presented with unilateral anterior uveitis. In four (33% patients, polymerase chain reaction was positive for viral genome. Two patients were positive for herpes simplex virus type 1, one patient was positive for cytomegalovirus and one for Epstein–Barr virus.Conclusion: Recent molecular diagnostic assays would help in the identification of the causative agent in patients with unilateral anterior uveitis. Keywords: viral anterior uveitis, PCR, herpes simplex virus, cytomegalovirus, diffuse keratic precipitates, anterior chamber

Complex aesthetic treatment on anterior maxillary teeth with malposition

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Febriastuti Febriastuti

2008-12-01

Full Text Available Background: Complex aesthetic treatment on anterior teeth involves more than one caries tooth with malformed shape and malposition. Purpose: The purpose of this paper is to find the alternative treatment for anterior maxillary teeth with malposition. Case: In this case, a 25 year-old man with a peg shaped teeth and caries on several teeth and malposition can be treated with complex aesthetic treatment. Case management: Endodontic pulpectomy treatment on anterior maxillary teeth and post construction with splint porcelain fused to metal crowns on 11, 12, and 21, 22 to correct the shape and position into normal position. Conclusion: Malformed and malpositioned teeth with caries can be treated with complex aesthetic treatment.

Lenticonus diagnosis in Alport's syndrome: Anterior capsule apical angle calculation using Scheimpflug imagery.

Science.gov (United States)

Jarrín, E; Jarrín, I; Arnalich-Montiel, F

2015-08-01

We describe a simplified method to detect anterior lenticonus. Three eyes of 2 patients with anterior lenticonus, plus 16 eyes from 16 healthy controls underwent Scheimpflug imaging of their anterior segment with Pentacam. The anterior capsule apex angle was manually identified and automatically measured by AutoCAD. The mean angle was 173.06° (SD: 1.91) in healthy subjects, and 158.33° (SD: 3.05) in anterior lenticonus eyes. The angle obtained from patients was more than 3 SD steeper than those from healthy subjects. The apical angle calculation method seems to discriminate well between normal eyes and eyes suspected of having anterior lenticonus. Copyright © 2013 Sociedad Española de Oftalmología. Published by Elsevier España, S.L.U. All rights reserved.

Subcranial approach in the surgical treatment of anterior skull base trauma.

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Schaller, B

2005-04-01

Fractures of the anterior skull base, because of the region's anatomical relationships, are readily complicated by neurological damage to the brain or cranial nerves. This review highlights the use of a subcranial approach in the operative treatment of injuries of the anterior skull base and compares it to the more traditional neurosurgical transcranial approach. The extended anterior subcranial approach takes advantage of the specific features of injuries in this region and allows direct access to the central anterior cranial base in order to repair fractures, close CSF fistulae and relieve of optic nerve compression. It avoids extensive frontal lobe manipulation. The success of the approach in achieving the aims of surgery with low morbidity is reviewed.

Toxic anterior-segment syndrome (TASS

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Cetinkaya S

2014-10-01

Full Text Available Servet Cetinkaya,1 Zeynep Dadaci,2 Hüsamettin Aksoy,3 Nursen Oncel Acir,2 Halil Ibrahim Yener,4 Ekrem Kadioglu5 1Ophthalmology Clinics, Turkish Red Crescent Hospital, Konya, 2Department of Ophthalmology, Faculty of Medicine, Mevlana University, Konya, 3Ophthalmology Clinics, Karaman State Hospital, Karaman, 4Konya Eye Center Hospital, Konya, 5Ophthalmology Clinics, Beyhekim State Hospital, Konya, Turkey Purpose: To evaluate the clinical findings and courses of five patients who developed toxic anterior-segment syndrome (TASS after cataract surgery and investigate the cause.Materials and methods: In May 2010, on the same day, ten patients were operated on by the same surgeon. Five of these patients developed TASS postoperatively.Results: Patients had blurred-vision complaints on the first day after the operation, but no pain. They had different degrees of diffuse corneal edema, anterior-chamber reaction, fibrin, hypopyon, iris atrophies, and dilated pupils. Their vision decreased significantly, and their intraocular pressures increased. Both anti-inflammatory and antiglaucomatous therapies were commenced. Corneal edema and inflammation resolved in three cases; however, penetrating keratoplasty was needed for two cases and additional trabeculectomy was needed for one case. Although full investigations were undertaken at all steps, we could not find the causative agent.Conclusion: TASS is a preventable complication of anterior-segment surgery. Recognition of TASS, differentiating it from endophthalmitis, and starting treatment immediately is important. Controlling all steps in surgery, cleaning and sterilization of the instruments, and training nurses and other operation teams will help us in the prevention of TASS. Keywords: cataract, phacoemulsification, TASS, corneal edema, inflammation

Procedimiento para la discriminación y mapeo de los rodales de nerdo en cultivos de girasol mediante teledetección

OpenAIRE

López Granados, Francisca; García Torres, Luis; Peña Barragán, José Manuel; Jurado-Expósito, Montserrat

2006-01-01

Procedimiento para la discriminación y mapeo de los rodales de nerdo en cultivos de girasol mediante teledetección. Procedimiento para mapear zonas infestadas de la mala hierba conocida como nerdo (Ridolfia segetum Moris) en plantaciones de girasol mediante teledetección. Tiene aplicación en Agricultura, y más concretamente en Empresas de Asistencia Técnica Agraria o Medioambiental, o en Auditorias Agroambientales Públicas o Privadas. Principalmente consiste en el anál...

Relation between anterior displacement of the temporomandibular joint disc and size of the condyle

International Nuclear Information System (INIS)

Ohgushi, Masatoshi; Kubota, Hisashi; Yamaguchi, Kouichi; Shibata, Takanori

1996-01-01

To elucidate the cause of anterior displacement of the disc, we evaluated the relation between anterior displacement and the size of the condyle from MR images in 301 patients (602 TMJs) with clinical diagnosis of internal derangement. We found that the size of condyles with anterior displacement of the disc was significantly smaller than that of condyles without anterior displacement. This result suggests that small condyles may give rise to anterior displacement of the disc. (author)

Morfologia macroscópica e topografia anatômica do intestino grosso da paca (Cuniculus paca Linnaeus, 1766

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Camila Paes Burger

2012-01-01

Full Text Available http://dx.doi.org/10.5007/2175-7925.2012v25n2p117 O alto potencial zootécnico para a exploração da paca implica no aporte de informações sobre a morfofisiologia do trato digestório para adequada implementação do manejo nutricional. O intestino grosso da paca foi investigado em seus aspectos morfológicos e topográficos, mediante inspeção de peças a fresco e fixadas em solução aquosa de formol a 10% provindas do plantel do Setor de Animais Silvestres do Departamento de Zootecnia da Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal – UNESP (FCAV – UNESP. Este segmento, na paca, é formado pelos segmentos ceco, cólon, reto e canal anal, situa-se na cavidade abdominal e pélvica a partir das terceira ou quarta vértebras lombares. Com isso, constatou-se que, em 100% das amostras analisadas, não houve variação no padrão de disposição do intestino grosso, e que este padrão se assemelha ao dos mamíferos em geral.

Reflex muscle contraction in anterior shoulder instability.

Science.gov (United States)

Wallace, D A; Beard, D J; Gill, R H; Eng, B; Carr, A J

1997-01-01

Reduced proprioception may contribute to recurrent anterior shoulder instability. Twelve patients with unilateral shoulder instability were investigated for evidence of deficient proprioception with an activated pneumatic cylinder and surface electromyography electrodes; the contralateral normal shoulder was used as a control. The latency between onset of movement and the detection of muscle contraction was used as an index of proprioception. No significant difference in muscle contraction latency was detected between the stable and unstable shoulders, suggesting that there was no significant defect in muscular reflex activity. This study does not support the use proprioception-enhancing physiotherapy in the treatment of posttraumatic anterior shoulder instability.

A conservative approach for restoring anterior guidance: a case report.

Science.gov (United States)

Pontons-Melo, Juan Carlos; Pizzatto, Eduardo; Furuse, Adilson Yoshio; Mondelli, José

2012-06-01

One of the most common dental problems in today's clinics is tooth wear, specifically when related to bruxism. In such cases, the esthetics of anterior teeth may be compromised when excessive wear to the incisal surfaces occurs. Anterior tooth wear resulting from parafunctional bruxism can be conservatively treated with the use of direct resin composite restorations. This restorative approach has the advantages of presenting good predictability, load resistance, acceptable longevity, preservation of healthy dental tissues, and lower cost when compared with indirect restorations. The use of resin composites to solve esthetic problems, however, requires skill and practice. Thus, the present article demonstrates a conservative approach for restoring the esthetics and function of worn anterior teeth with the aid of direct resin composite restorations and selective occlusal adjustment. A conservative approach to restore anterior teeth with excessive wear is possible with direct resin composites. © 2011 Wiley Periodicals, Inc.

A Rare Case of Neglected Traumatic Anterior Dislocation of Hip in a Child.

Science.gov (United States)

Mootha, Aditya Krishna; Mogali, Kasi Viswanadam

2016-01-01

Post traumatic hip dislocations are very rare in children. Neglected anterior hip dislocations in children are not described in literature so far. Here, we present a case of 6 weeks old anterior hip dislocation successfully managed by open reduction. A 9-year-old male child presented with neglected anterior hip dislocation on left side. Open reduction carried out through direct anterior approach to hip. Congruent reduction is achieved. At final follow up of 1 year, the child had unrestricted activities of daily living and no radiological signs of osteonecrosis or any joint space reduction. There is paucity of literature over neglected post traumatic anterior hip dislocations in children. The treatment options vary from closed reduction after heavy traction to sub trochanteric osteotomy. However, we feel that open reduction through direct anterior approach is the preferred mode of management whenever considered possible.

Reconstrucción de Piso Orbitario con esclera en Fracturas del Tercio Medio. Presentación de caso

OpenAIRE

Alexis A. Amador-Velázquez; Martha Rodríguez-Milord; Reynaldo Oro-Canelles

2011-01-01

Presentó un caso el cual fue víctima de una agresión con un objeto cortante que le produjo una fractura compleja del tercio medio facial provocándole una Fractura Le Fort III unilateral izquierda y Le Fort II unilateral derecha con herida perforante y extensa en globo ocular izquierdo que fue necesario realizar su eviseración, extrayendo de este un fragmento de esclera del segmento anterior de mas menos 1cm de largo para reparar una fractura mediana en piso orbital derecho logrando su fijaci...

Principios básicos y aplicación del aprendizaje mediante tareas

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Estaire, Sheila

2011-04-01

Full Text Available En los últimos años el aprendizaje mediante tareas ha ido consolidándose como una nueva forma de enseñar y aprender lenguas extranjeras. Sin embargo existen una serie de aspectos prácticos relacionados con su aplicación en los que aún se puede profundizar. En este artículo, después de una introducción breve de algunos principios básicos, se discuten posibles procedimientos para determinar las tareas que constituyen el eje de un programa, así como para organizar el proceso de enseñanza / aprendizaje. A continuación se presentan diferentes modalidades de trabajo sobre los aspectos formales de la lengua, aspectos que es esencial tratar de forma rigurosa, minuciosa y sistemática. Este punto crucial se discute junto con una propuesta de estructura de curso que consta de dos componentes diferenciados. Por otra parte, los elementos innovadores del aprendizaje mediante tareas hacen imprescindible una gestión del aprendizaje también innovadora, aspecto que se trata en el último apartado a través de pautas metodológicas que potencian la eficacia de las tareas como instrumento de aprendizaje.

Prevalence and factors associated with anterior open bite in 2 to 5 ...

African Journals Online (AJOL)

Prevalence and factors associated with anterior open bite in 2 to 5 year old children in Benin city, Nigeria. ... Background: Anterior open bite is said to exist when there is an actual vertical gap between the upper and lower incisors with the teeth in centric occlusion. This could occur in the anterior or posterior region, and may ...

Endothelial cell density after deep anterior lamellar keratoplasty (Melles technique)

NARCIS (Netherlands)

Van Dooren, BTH; Mulder, PGH; Nieuwendaal, CP; Beekhuis, WH; Melles, GRJ

PURPOSE: To measure the recipient endothelial cell loss after the Melles technique for deep anterior lamellar keratoplasty. METHODS: In 21 eyes of 21 patients, a deep anterior lamellar keratoplasty procedure was performed. Before surgery and at 6, 12, and 24 months after surgery, specular microscopy

Right bundle branch block and anterior wall ST elevation myocardial infarction.

Science.gov (United States)

Trofin, Monica; Israel, Carsten W; Barold, S Serge

2017-09-01

We report the case of an acute anterior wall ST elevation myocardial infarction with new left anterior fascicular block and pre-existing right bundle branch block. Due to a wide right bundle branch block, no ST segment elevation was visible in lead V1. The left anterior fascicular block was caused by proximal occlusion of the left artery descending and disappeared after acute revascularization. However, also the R' of the right bundle branch block became significantly shorter after revascularization, dismanteling a minor ST segment elevation. The ST elevation in lead V1 in anterior wall infarction and right bundle branch block may merge with the R' and cause a further QRS widening as an "equivalent" to the ST elevation.

Bilateral agenesis of the anterior cruciate ligament: MRI evaluation

Energy Technology Data Exchange (ETDEWEB)

Bedoya, Maria A.; Jaramillo, Diego [The Children' s Hospital of Philadelphia, Radiology Department, Philadelphia, PA (United States); McGraw, Michael H. [Hospitalof theUniversityof Pennsylvania, Divisionof Orthopaedics, Philadelphia, PA (United States); Wells, Lawrence [The Children' s Hospital of Philadelphia, Division of Orthopaedics, Philadelphia, PA (United States)

2014-09-15

Bilateral agenesis of the anterior cruciate ligament (ACL) is extremely rare. We describe a 13-year-old girl who presented with bilateral knee pain without history of trauma; she has two family members with knee instability. Magnetic resonance imaging showed bilateral absence of the ACL, and medial posterior horn meniscal tears. Bilateral arthroscopic partial meniscectomy and anterior cruciate ligament reconstruction was performed. (orig.)

The effect of anterior proton beams in the setting of a prostate-rectum spacer

Energy Technology Data Exchange (ETDEWEB)

Christodouleas, John P., E-mail: christojo@uphs.upenn.edu [Department of Radiation Oncology, Hospital of the University of Pennsylvania, Philadelphia, PA (United States); Tang, Shikui [Department of Radiation Oncology, Hospital of the University of Pennsylvania, Philadelphia, PA (United States); Susil, Robert C.; McNutt, Todd R.; Song, Danny Y. [Department of Radiation Oncology and Radiation Molecular Sciences, Johns Hopkins Hospital, Baltimore, MD (United States); Bekelman, Justin; Deville, Curtiland; Vapiwala, Neha [Department of Radiation Oncology, Hospital of the University of Pennsylvania, Philadelphia, PA (United States); DeWeese, Theodore L. [Department of Radiation Oncology and Radiation Molecular Sciences, Johns Hopkins Hospital, Baltimore, MD (United States); Lu, Hsiao-Ming [Department of Radiation Oncology, Massachusetts General Hospital, Boston, MA (United States); Both, Stefan [Department of Radiation Oncology, Hospital of the University of Pennsylvania, Philadelphia, PA (United States)

2013-10-01

Studies suggest that anterior beams with in vivo range verification would improve rectal dosimetry in proton therapy for prostate cancer. We investigated whether prostate-rectum spacers would enhance or diminish the benefits of anterior proton beams in these treatments. Twenty milliliters of hydrogel was injected between the prostate and rectum of a cadaver using a transperineal approach. Computed tomography (CT) and magnetic resonance (MR) images were used to generate 7 uniform scanning (US) and 7 single-field uniform dose pencil-beam scanning (PBS) plans with different beam arrangements. Pearson correlations were calculated between rectal, bladder, and femoral head dosimetric outcomes and beam arrangement anterior scores, which characterize the degree to which dose is delivered anteriorly. The overall quality of each plan was compared using a virtual dose-escalation study. For US plans, rectal mean dose was inversely correlated with anterior score, but for PBS plans there was no association between rectal mean dose and anterior score. For both US and PBS plans, full bladder and empty bladder mean doses were correlated with anterior scores. For both US and PBS plans, femoral head mean doses were inversely correlated with anterior score. For US plans and a full bladder, 4 beam arrangements that included an anterior beam tied for the highest maximum prescription dose (MPD). For US plans and an empty bladder, the arrangement with 1 anterior and 2 anterior oblique beams achieved the highest MPD in the virtual dose-escalation study. The dose-escalation study did not differentiate beam arrangements for PBS. All arrangements in the dose-escalation study were limited by bladder constraints except for the arrangement with 2 posterior oblique beams. The benefits of anterior proton beams in the setting of prostate-rectum spacers appear to be proton modality dependent and may not extend to PBS.

The effect of anterior proton beams in the setting of a prostate-rectum spacer

Science.gov (United States)

Christodouleas, John P.; Tang, Shikui; Susil, Robert C.; McNutt, Todd R.; Song, Danny Y.; Bekelman, Justin; Deville, Curtiland; Vapiwala, Neha; DeWeese, Theodore L.; Lu, Hsiao-Ming; Both, Stefan

2014-01-01

Studies suggest that anterior beams with in vivo range verification would improve rectal dosimetry in proton therapy for prostate cancer. We investigated whether prostate-rectum spacers would enhance or diminish the benefits of anterior proton beams in these treatments. Twenty milliliters of hydrogel was injected between the prostate and rectum of a cadaver using a transperineal approach. Computed tomography (CT) and magnetic resonance (MR) images were used to generate 7 uniform scanning (US) and 7 single-field uniform dose pencil-beam scanning (PBS) plans with different beam arrangements. Pearson correlations were calculated between rectal, bladder, and femoral head dosimetric outcomes and beam arrangement anterior scores, which characterize the degree to which dose is delivered anteriorly. The overall quality of each plan was compared using a virtual dose-escalation study. For US plans, rectal mean dose was inversely correlated with anterior score, but for PBS plans there was no association between rectal mean dose and anterior score. For both US and PBS plans, full bladder and empty bladder mean doses were correlated with anterior scores. For both US and PBS plans, femoral head mean doses were inversely correlated with anterior score. For US plans and a full bladder, 4 beam arrangements that included an anterior beam tied for the highest maximum prescription dose (MPD). For US plans and an empty bladder, the arrangement with 1 anterior and 2 anterior oblique beams achieved the highest MPD in the virtual dose-escalation study. The dose-escalation study did not differentiate beam arrangements for PBS. All arrangements in the dose-escalation study were limited by bladder constraints except for the arrangement with 2 posterior oblique beams. The benefits of anterior proton beams in the setting of prostate-rectum spacers appear to be proton modality dependent and may not extend to PBS. PMID:23578497

Anterior Colporrhaphy Technique and Approach Choices: Turkey Evaluation

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Serdar Aydın

2016-09-01

Full Text Available Aim: To evaluate the diversity in techniques and approaches for anterior colporrhaphy among operators in Turkey. Methods: A survey evaluating the preoperative examination, technique of anterior colporrhaphy, operation choice and postoperative care was presented to surgeons. We contacted via directly, mail or telephone. We used 28 item questionnaire. Results: Majority (87.9% was composed of young gynecologists. Urologists composed of the 9.5% of the study population. The rate of paravaginal defect evaluation was 75.9% and mostly by inspection the presence of vaginal rugae. The use of transperineal 3D pelvic floor ultrasonography was low (5.7%. The evaluation of levator ani muscle defect was 46.6%. The usage of the transperineal 3D ultrasonography for levator ani muscle defect was 19 percent of operators. There were diversity in use of hydrodissection, fascial plication, excision of vaginal mucosa and suture choice. Usage of mesh for anterior colporrhaphy was limited (17.8% and mostly in recurrent cases (12.2%. Paravaginal defect repair rate was 31.9%. The urinary catheter was generally removed one or two day after operation. Vaginal pack usually removed 24 hours after. Conclusion: Several techniques and approaches for anterior vaginal wall repair among operators in Turkey. The variety of techniques suggested that there is no consensus on best surgical technique.

Comportamiento de pórticos en Guadua angustifolia, rigidizados mediante páneles prefabricados en bahareque

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Juan Carlos Herrera Martinez

2009-09-01

Full Text Available Después del sismo de 1999 en Armenia, el estudio del comportamiento estructural de los sistemas de bahareque en Colombia toma relevancia debido al buen comportamiento que éstos presentaron ante el evento sísmico. Los estudios buscaban la tecnifi- cación en la construcción de viviendas en bahareque y brindar los requisitos mínimos para obtener un grado adecuado de sis- morresistencia y evitar así el colapso; además si se tiene en cuenta que la guadua es un material económico y rentable, social y culturalmente aceptado en una amplia región del país, se estaría en presencia de un material alternativo y no convencional que con la identificación de sus limitaciones y un adecuado uso permitiría su implementación en la fabricación de viviendas econó- micas, funcionales y seguras. Lo anterior motivó la presente investigación, en donde se hizo una evaluación experimental de un sistema de pórtico en guadua escala 1:1 rigidizado mediante la adición de dos tipos de páneles prefabricados de bahareque y ensayado ante cargas horizontales. Se halló la capacidad de disipar energía del pórtico y el aporte a la rigidez al adicionar los páneles, obteniendo resultados bastante alentadores, en donde se redujeron derivas en aproximadamente un 50% y se aumentó la resistencia del sistema en más de un 40%. Paralelamente, se realizaron modelos matemáticos para comparar resultados ex- perimentales con resultados analíticos. Los modelos experimentales fueron construidos y ensayados en el Laboratorio de Mate- riales de la Facultad de Ingeniería de la Universidad Nacional de Colombia.

Anterior chest wall examination reviewed

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F. Trotta

2011-09-01

Full Text Available Anterior chest wall involvement is not infrequently observed within inflammatory arthropaties, particularly if one considers seronegative spondiloarthritides and SAPHO syndrome. Physical examination is unreliable and conventional X-rays analysis is an unsatisfactory tool during diagnostic work-up of this region. Scintigraphic techniques yield informations both on the activity and on the anatomical extent of the disease while computerized tomography visualize the elementary lesions, such as erosions, which characterize the process. Moreover, when available, magnetic resonance imaging couple the ability to finely visualize such lesions with the possibility to show early alterations and to characterize the “activity” of the disease, presenting itself as a powerful tool both for diagnosis and follow-up. This review briefly shows the applications of imaging techniques for the evaluation of the anterior chest wall focusing on what has been done in the SAPHO syndrome which can be considered prototypical for this regional involvement since it is the osteo-articular target mainly affected by the disease.

Estudio comparativo del comportamiento de losas de concreto reforzado mediante los análisis elástico y límite

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Julio Vergara García

1989-01-01

Full Text Available Presenta un resumen de la tesis de grado "Estudio comparativo de losas de concreto reforzado mediante los análisis elástico y límite". Este trabajo proporciona fórmulas, tablas y gráficas prácticas para determinar los momentos flectores y el volumen de refuerzo de los tipos de losas estudiados, sometidas a diferentes tipos de carga y analizados mediante la Teoría de la Elasticidad y el Análisis Límite.

Síntesis de nitruro de titanio mediante láser y energía solar concentrada

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García, I.

1998-04-01

Full Text Available The possibility of the employment of solar energy concentrated by Fresnel lens is investigated in order to synthesize materials by gas-solid reaction. These first results are compared by two similar techniques as high power laser and xenon are lamp. The TiN coatings obtained with xenon are lamp and Fresnel lens are homogenous, without pores or defects, with a uniform thickness of about 6 μm for treatments of 2 min. The good quality of the TiN coating for all the testing conditions was confirmed by the x-ray diffraction measurements.

Se presenta la utilización de la energía solar concentrada mediante lentes de Fresnel para la síntesis de materiales por reacción gas-sólido. Estos primeros resultados sobre nitruración superficial de titanio y aleaciones de titanio se comparan con los obtenidos con técnicas similares como el láser de alta potencia y la lámpara de descarga de xenón. Las capas de nitruro de titanio obtenidas mediante energía solar concentrada por lentes de Fresnel y lámpara de xenón son homogéneas, sin grietas ni defectos, y con un espesor uniforme de 6 μm en tiempos de sólo 2 min. La buena calidad de estas capas se confirma mediante difracción de rayos X.

Endothelial cell density after deep anterior lamellar keratoplasty (Melles technique)

NARCIS (Netherlands)

van Dooren, Bart T. H.; Mulder, Paul G. H.; Nieuwendaal, Carla P.; Beekhuis, W. Houdijn; Melles, Gerrit R. J.

2004-01-01

To measure the recipient endothelial cell loss after the Melles technique for deep anterior lamellar keratoplasty. In 21 eyes of 21 patients, a deep anterior lamellar keratoplasty procedure was performed. Before surgery and at 6, 12, and 24 months after surgery, specular microscopy was performed to

Monitorización de Signos Vitales Mediante una Red de Dispositivos Móviles

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Daniel Cilio

2013-11-01

Full Text Available El desarrollo e implementación de diferentes proyectos tecnológicos, apoyados en el correspondiente conocimiento médico, pueden contribuir a resolver varios problemas del sector de la salud. Si bien en los últimos años se han realizado enormes esfuerzos para desarrollar tecnologías aplicables en ambientes clínicos, el desarrollo de tecnologías para atención médica domiciliar podría reducir la presión que agobia a los hospitales actualmente. En el presente proyecto se realiza el diseño e implementación de un sistema para monitorización de signos vitales, el cual mide la frecuencia cardiaca, la oxigenación sanguínea y la temperatura corporal de una persona. La información obtenida de cada signo vital es muestreada y procesada por una plataforma digital para posteriormente ser enviada mediante un módulo Bluetooth hacia un dispositivo móvil para su análisis y visualización. El prototipo fue evaluado mediante una batería de pruebas para medición de signos vitales en diferentes pacientes.

Ana?lisis cinemático de la marcha en pacientes con pie zambo tratados mediante el me?todo de Ponseti frente a la te?cnica quiru?rgica de liberacio?n posterior

OpenAIRE

Ferrando, A.; Salom Taverner, M.; Page, A.

2018-01-01

El objetivo principal de este proyecto consiste en valorar la evolución de la marcha en niños en edad preadolescente tratados mediante el método de Ponseti frente a los tratados mediante liberación posterior a partir de técnicas de valoración de la marcha mediante análisis biomecánico. Material y Métodos Estudio retrospectivo de casos y controles aprobado por el comité de ética. Grupo 1: 28 niños (39 pies) tratados mediante liberación posterior. Grupo 2: 18 pacientes (31 pies) tratados median...

Acceptance of Transgenic Milk in La Araucania Region,Chile Aceptación de leche transgénica en la Región de la Araucanía Chile

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Berta Schnettler M

2008-12-01

Full Text Available Considering the high level of concern caused by genetically modified foods (GMF in developed countries, the relevance of this variable in decision-making about the purchase of fluid milk among consumers in Temuco (La Araucanía Region, Chile was determined. By means of a personal survey of 400 people and using conjoint analysis, it was determined that the presence of genetic modifications in food was more important (44.7% than brand (29.5% and price (25.5% in the decision-making process. By cluster analysis three segments were identified; the largest group (46.5% gave similar relevance to food production and brand, preferring genetically modified milk. For the second group (41.5%, the presence or absence of genetic modification was the most important variable in the purchase, with a strong rejection of milk produced by genetic manipulation and preference for non-transgenic milk. The minority segment (12.0% placed a higher value on price. These three segments prefer national brand milk, reject the product with private brands and react positively to lower prices. The most sensitive segment to genetic food manipulation had a higher proportion of people under 35 years of age and with no children. It is concluded that the absence of genetic manipulation in food is a desirable condition, mainly for young consumers of La Araucanía Region.Considerando el debate generado por los alimentos genéticamente modificados (GMF en los países desarrollados, se determinó la importancia de esta variable en la decisión de compra de leche fluida en consumidores de Temuco (Región de La Araucanía, Chile y la existencia de diferentes segmentos de mercado, mediante una encuesta personal a 400 personas. Utilizando análisis conjunto se determinó, en general, que la presencia de modificación genética en el alimento fue más importante (44,7% que la marca (29,5% y el precio (25,5% en la decisión de compra. Mediante análisis cluster se distinguieron tres segmentos

Single-stage anterior high sacrectomy for locally recurrent rectal cancer.

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Fawaz, Khaled; Khaled, Fawaz; Smith, Myles J; Moises, Cukier; Smith, Andrew J; Yee, Albert J M

2014-03-01

A review of prospectively collected data on a consecutive series of patients undergoing single-stage anterior high sacrectomy for locally recurrent rectal carcinoma (LRRC). To determine the clinical outcome of patients who underwent anterior high sacrectomy for LRRC. High sacrectomy for oncological resection remains technically challenging. Surgery has the potential to achieve cure in carefully selected patients. Complete (R0) tumor excision in LRRC may require sacrectomy. High sacral resections (S3 and above) typically require a combined anterior/supine and posterior/prone procedure. We investigated our experience performing single-stage anterior high sacrectomy for LRRC. A consecutive series of patients with LRRC without systemic metastases who underwent resection with curative intent requiring high sacrectomy were identified. A review of a prospectively maintained colorectal and spine cancer database data was performed. An oblique dome high sacral osteotomy was performed during a single-stage anterior procedure. Outcome measures included surgical resection margin status, hospital length of stay, postoperative complications, physical functioning status, and overall survival. Nineteen consecutive patients were treated between 2002 and 2011. High sacrectomy was performed at sacral level S1-S2 in 4 patients, S2-S3 in 9 patients, and through S3 in 6 patients. An R0 resection margin was achieved histologically in all 19 cases. There was 1 early (<30 d) postoperative death (1/19, 5%). At median follow-up of 38 months, 13 patients had no evidence of residual disease, 1 was alive with disease, and 4 had died of disease. Morbidities occurred in 15 of the 19 patients (79%). Although high sacrectomy may require a combined anterior and posterior surgical approach, our series demonstrates the feasibility of performing single-stage anterior high sacrectomy in LRRC, with acceptable risks and outcomes compared with the literature. The procedure described by us for LRRC lessens

Multiparametric MRI of the anterior prostate gland: clinical–radiological–histopathological correlation

International Nuclear Information System (INIS)

Moosavi, B.; Flood, T.A.; Al-Dandan, O.; Breau, R.H.; Cagiannos, I.; Morash, C.; Malone, S.C.; Schieda, N.

2016-01-01

Anterior prostate cancer (APC) is defined as a tumour in which more than half of malignant tissue is located anterior to the urethra. APCs are increasingly recognized as clinically important, particularly in patients undergoing active surveillance and for patients with negative non-targeted systematic transrectal ultrasound (TRUS)-guided biopsies but with persistent clinical suspicion of cancer. Multiparametric (mp) MRI has a crucial role for the diagnosis of anterior tumours, eventual histological sampling of suspicious lesions using image-guided targeted biopsy techniques, and potentially, to improve local staging of disease. mpMRI is accurate for the detection of APC and for differentiation of tumour from other anterior prostatic structures including benign prostatic hyperplasia (BPH) and the anterior fibromuscular stroma (AFMS). Characterization and reporting of APC should rely on the recently revised Prostate Imaging and Data Reporting System (PI-RADS) version 2.0 document. T2-weighted (T2W) imaging is emphasized as the determining sequence for assessment of the anterior prostate and specific features for APC on T2W imaging include: ill-defined/spiculated margin, lenticular shape, anterior/inferior location, and growth pattern (invasion of urethra or AFMS and crossing midline). Functional imaging, mainly with diffusion-weighted imaging, is also contributory and improves the sensitivity for detection of APC compared to T2W imaging alone. APCs commonly show positive surgical margins after radical prostatectomy and staging of disease extent using conventional clinical parameters is limited. mpMRI may have a future role to improve local staging of APC. This review illustrates the importance of mpMRI in APC using a clinical–radiological–histopathological approach.

Sacral nerve stimulation can be an effective treatment for low anterior resection syndrome.

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Eftaiha, S M; Balachandran, B; Marecik, S J; Mellgren, A; Nordenstam, J; Melich, G; Prasad, L M; Park, J J

2017-10-01

Sacral nerve stimulation has become a preferred method for the treatment of faecal incontinence in patients who fail conservative (non-operative) therapy. In previous small studies, sacral nerve stimulation has demonstrated improvement of faecal incontinence and quality of life in a majority of patients with low anterior resection syndrome. We evaluated the efficacy of sacral nerve stimulation in the treatment of low anterior resection syndrome using a recently developed and validated low anterior resection syndrome instrument to quantify symptoms. A retrospective review of consecutive patients undergoing sacral nerve stimulation for the treatment of low anterior resection syndrome was performed. Procedures took place in the Division of Colon and Rectal Surgery at two academic tertiary medical centres. Pre- and post-treatment Cleveland Clinic Incontinence Scores and Low Anterior Resection Syndrome scores were assessed. Twelve patients (50% men) suffering from low anterior resection syndrome with a mean age of 67.8 (±10.8) years underwent sacral nerve test stimulation. Ten patients (83%) proceeded to permanent implantation. Median time from anterior resection to stimulator implant was 16 (range 5-108) months. At a median follow-up of 19.5 (range 4-42) months, there were significant improvements in Cleveland Clinic Incontinence Scores and Low Anterior Resection Syndrome scores (P syndrome and may therefore be a viable treatment option. Colorectal Disease © 2017 The Association of Coloproctology of Great Britain and Ireland.

MR imaging of the anatomy of the anterior horn of the medial meniscus.

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De Coninck, Tineke; Vanrietvelde, Frederik; Seynaeve, Patrick; Verdonk, Peter; Verstraete, Koenraad

2017-04-01

Background In cadaveric and arthroscopic studies different insertion locations of the anterior horn of the medial meniscus (AHMM) have been described. Purpose To investigate if the different insertion locations of the AHMM, as described in cadaveric studies, can be determined on magnetic resonance imaging (MRI). Material and Methods MR images of 100 patients without meniscal tears on MRI were retrospectively evaluated. Two observers classified the AHMM insertion based on its position relative to the anterior tibial edge and the medial tibial spine. The association between AHMM insertion and tibial plateau slope, meniscal radial displacement, and anterior intermeniscal ligament (AIL) presence was investigated. Results The AHMM inserted posterior to the anterior tibial edge in 93 knees and anterior to the tibial edge in seven knees (= type III). Of the 93 knees with AHMM insertion posterior to the anterior tibial edge, 63 inserted lateral to the medial tibial spine (= type I) and 30 medial (= type II). The AHMMs inserting anterior to the tibial edge had a significantly ( P  0.05). A strong inter- and intra-observer agreement was observed. Conclusion Three different bony insertion locations of the AHMM, as described in cadaveric studies, could be identified on MRI. All AHMMs inserting anterior to the tibial edge displayed an AIL. Whether there is a clinical correlation with these insertion patterns remains unclear.

Anterior capsulotomy with an ultrashort-pulse laser.

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Tackman, Ramon Naranjo; Kuri, Jorge Villar; Nichamin, Louis D Skip; Edwards, Keith

2011-05-01

To assess the precision of laser anterior capsulotomy compared with that of manual continuous curvilinear capsulorhexis (CCC). Asociación Para Evitar La Ceguera en México IAP, Hospital Dr. Luis Sánchez Bulnes, Mexico City, Mexico. Nonrandomized single-center clinical trial. In patients presenting for cataract surgery, the LensAR Laser System was used to create a laser anterior capsulotomy of the surgeon's desired size. Capsule buttons were retrieved and measured and then compared with buttons retrieved from eyes having a manually torn CCC. Deviation from the intended diameter and the regularity of shape were assessed. When removing the capsule buttons at the start of surgery, the surgeon rated the ease of removal on a scale of 1 to 10 (1 = required manual capsulorhexis around the whole diameter; 10 = button free floating or required no manual detachment from remaining capsule during removal). The mean deviation from the intended diameter was 0.16 mm ± 0.17 (SD) for laser anterior capsulotomy and 0.42 ± 0.54 mm for CCC (P=.03). The mean absolute deviation from the intended diameter was 0.20 ± 0.12 mm and 0.49 ± 0.47 mm, respectively (P=.003). The mean of the average squared residuals was 0.01 ± 0.03 and 0.02 ± 0.04, respectively (P=.09). The median rating of the ease of removal was 9 (range 5 to 10). Laser anterior capsulotomy created a more precise capsule opening than CCC, and the buttons created by the laser procedure were easy to remove at the beginning of cataract surgery. Copyright © 2011 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.

Video Juego Interactivo Mediante SDK Kinect 1.6 para Apoyar la Educación Básica Primaria de Niños Entre 5 a 10 Años de Edad

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Julián Humberto Tangarife

2015-10-01

Full Text Available Teniendo en cuenta que hoy en día, la deserción escolar se ha convertido en uno de los principales problemas en Colombia, el objetivo de este artículo es presentar una nueva herramienta tecnológica que apoye a profesores y padres de familia en la formación integral de los niños tanto en la escuela como en el hogar. Por lo anterior, se creó un videojuego interactivo, que estimula al niño a realizar una actividad muy sencilla en el área de matemáticas, la cual consiste en contar por medio del dispositivo Kinect mediante el movimiento de sus manos; estas permiten movilizar un número concreto de esferas solicitadas a un área seleccionada de la pantalla y, así mismo, verificar la cantidad e informar por medio de una ventana emergente si esta es correcta o si se debe realizar un nuevo intento. El proyecto queda abierto a mejoras, que permitan adicionar nuevas actividades referentes a las áreas del conocimiento humano, con el único fin de generar motivación por la educación en la infancia colombiana

Diagnosis and treatment of anterior uveitis: optometric management

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Harthan JS

2016-03-01

Full Text Available Jennifer S Harthan,1 Dominick L Opitz,2 Stephanie R Fromstein,1 Christina E Morettin3 1Cornea Center for Clinical Experience, 2Ophthalmology Services and Practice Development, 3Urgent Eye Care Service, Illinois College of Optometry, Chicago, IL, USA Abstract: Anterior uveitis encompasses inflammation of the iris and/or ciliary body and is one of the most common types of ocular inflammation that primary eye care practitioners will encounter. Anterior uveitis may be caused by a variety of etiologies, including infectious, noninfectious, and masquerade diseases. The short-term and long-term treatment of uveitis should include the evaluation of location, duration, pathology, and laterality, in addition to presenting signs and symptoms of the disease. A complete review of systems, thorough examination, and laboratory testing, may assist the practitioner in narrowing the list of possible causes for the uveitis. This is imperative as once a list of diagnoses has been made, a targeted approach to treatment can be pursued. Keywords: anterior uveitis, iritis, inflammation

Anterior transposition of the radial nerve--a cadaveric study.

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Yakkanti, Madhusudhan R; Roberts, Craig S; Murphy, Joshua; Acland, Robert D

2008-01-01

The radial nerve is at risk during the posterior plating of the humerus. The purpose of this anatomic study was to assess the extent of radial nerve dissection required for anterior transposition through the fracture site (transfracture anterior transposition). A cadaver study was conducted approaching the humerus by a posterior midline incision. The extent of dissection of the nerve necessary for plate fixation of the humerus fracture was measured. An osteotomy was created to model a humeral shaft fracture at the spiral groove (OTA classification 12-A2, 12-A3). The radial nerve was then transposed anterior to the humeral shaft through the fracture site. The additional dissection of the radial nerve and the extent of release of soft tissue from the humerus shaft to achieve the transposition were measured. Plating required a dissection of the radial nerve 1.78 cm proximal and 2.13 cm distal to the spiral groove. Transfracture anterior transposition of the radial nerve required an average dissection of 2.24 cm proximal and 2.68 cm distal to the spiral groove. The lateral intermuscular septum had to be released for 2.21 cm on the distal fragment to maintain laxity of the transposed nerve. Transfracture anterior transposition of the radial nerve before plating is feasible with dissection proximal and distal to the spiral groove and elevation of the lateral intermuscular septum. Potential clinical advantages of this technique include enhanced fracture site visualization, application of broader plates, and protection of the radial nerve during the internal fixation.

Evaluation of the anterior chamber angle in pseudoexfoliation syndrome.

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Iwanejko, Małgorzata; Turno-Kręcicka, Anna; Tomczyk-Socha, Martyna; Kaczorowski, Kamil; Grzybowski, Andrzej; Misiuk-Hojło, Marta

2017-08-01

Pseudoexfoliation syndrome (PEX) is the most frequently identifiable cause of secondary open-angle glaucoma, known as pseudoexfoliation glaucoma. The exact pathophysiology and etiology of PEX and associated glaucoma remains obscure. The purpose of this study was to determine the differences in the morphology of the anterior chamber angle in people with pseudoexfoliation syndrome and pseudoexfoliation glaucoma compared to a control group. We also evaluated the correlation between intraocular pressure (IOP) and pigmentation of the angle with the amount of exfoliated material in the anterior segment. The study group was composed of 155 eyes from 103 patients aged between 43 and 86 years. Each patient underwent a complete ophthalmological examination. Some difference was found in intraocular pressure between the PEX group and the control group and between the pseudoexfoliation glaucoma group and the control group, but no significant difference was found between the 2 study groups. There was a significant difference in the incidence of some degree of pigmentation in the anterior chamber angle and no difference in the widths of the angle between each group. A significant positive relationship was observed between intraocular pressure and the degree of pigmentation of the anterior chamber angle in both the PEX group and the pseudoexfoliation glaucoma group. The results of this study indicate that the amount of pigmentation and exfoliation material in the anterior segment significantly correlates with the level of IOP and possibly with the degree of trabecular dysfunction. It seems that for clear identification of PEX and pseudoexfoliation glaucoma factors, clinical assessment appears to be insufficient.

CT evaluation of the anterior epitympanic recess

International Nuclear Information System (INIS)

Yamasoba, Tatsuya; Kikuchi, Shigeru; Takeuchi, Naonobu; Harada, Takehiko; Nomura, Yasuya

1991-01-01

The structures of the anterior epitympanic recess and its surrounding tissues were examined among non-inflammatory ear, chronic otitis media with central perforation and cholesteatoma, using axial scans of high resolution computed tomography. The length and width of the recess, as well as the number of the slices where the cog was determined, had no significant differences among them. Thus, the bony structure of the recess was considered to be seldom influenced by inflammatory processes. In the non-inflammatory ear, the degree of pneumatization around the recess was similar to that of the petrous apex cells and lower than that of the mastoid cells. In the chronic otitis media with central perforation and cholesteatoma, the pneumatization of the whole temporal bones was suppressed and the tendency was also found that the cells around the recess were less pneumatized than the mastoid cells. When cholesteatoma invaded into the anterior epitympanic recess, the destruction of the bony protrusion of the lateral wall between the recess and the epitympanum was recognized, as well as the disappearance of the cog. The bony protrusion was considered to be an inferior extention of the cog toward the anterior tympanic spine. (author)

A Review on Biomechanics of Anterior Cruciate Ligament and Materials for Reconstruction

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Marieswaran, M.; Jain, Ishita; Garg, Bhavuk; Sharma, Vijay

2018-01-01

The anterior cruciate ligament is one of the six ligaments in the human knee joint that provides stability during articulations. It is relatively prone to acute and chronic injuries as compared to other ligaments. Repair and self-healing of an injured anterior cruciate ligament are time-consuming processes. For personnel resuming an active sports life, surgical repair or replacement is essential. Untreated anterior cruciate ligament tear results frequently in osteoarthritis. Therefore, understanding of the biomechanics of injury and properties of the native ligament is crucial. An abridged summary of the prominent literature with a focus on key topics on kinematics and kinetics of the knee joint and various loads acting on the anterior cruciate ligament as a function of flexion angle is presented here with an emphasis on the gaps. Briefly, we also review mechanical characterization composition and anatomy of the anterior cruciate ligament as well as graft materials used for replacement/reconstruction surgeries. The key conclusions of this review are as follows: (a) the highest shear forces on the anterior cruciate ligament occur during hyperextension/low flexion angles of the knee joint; (b) the characterization of the anterior cruciate ligament at variable strain rates is critical to model a viscoelastic behavior; however, studies on human anterior cruciate ligament on variable strain rates are yet to be reported; (c) a significant disparity on maximum stress/strain pattern of the anterior cruciate ligament was observed in the earlier works; (d) nearly all synthetic grafts have been recalled from the market; and (e) bridge-enhanced repair developed by Murray is a promising technique for anterior cruciate ligament reconstruction, currently in clinical trials. It is important to note that full extension of the knee is not feasible in the case of most animals and hence the loading pattern of human ACL is different from animal models. Many of the published reviews on

hmmr mediates anterior neural tube closure and morphogenesis in the frog Xenopus.

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Prager, Angela; Hagenlocher, Cathrin; Ott, Tim; Schambony, Alexandra; Feistel, Kerstin

2017-10-01

Development of the central nervous system requires orchestration of morphogenetic processes which drive elevation and apposition of the neural folds and their fusion into a neural tube. The newly formed tube gives rise to the brain in anterior regions and continues to develop into the spinal cord posteriorly. Conspicuous differences between the anterior and posterior neural tube become visible already during neural tube closure (NTC). Planar cell polarity (PCP)-mediated convergent extension (CE) movements are restricted to the posterior neural plate, i.e. hindbrain and spinal cord, where they propagate neural fold apposition. The lack of CE in the anterior neural plate correlates with a much slower mode of neural fold apposition anteriorly. The morphogenetic processes driving anterior NTC have not been addressed in detail. Here, we report a novel role for the breast cancer susceptibility gene and microtubule (MT) binding protein Hmmr (Hyaluronan-mediated motility receptor, RHAMM) in anterior neurulation and forebrain development in Xenopus laevis. Loss of hmmr function resulted in a lack of telencephalic hemisphere separation, arising from defective roof plate formation, which in turn was caused by impaired neural tissue narrowing. hmmr regulated polarization of neural cells, a function which was dependent on the MT binding domains. hmmr cooperated with the core PCP component vangl2 in regulating cell polarity and neural morphogenesis. Disrupted cell polarization and elongation in hmmr and vangl2 morphants prevented radial intercalation (RI), a cell behavior essential for neural morphogenesis. Our results pinpoint a novel role of hmmr in anterior neural development and support the notion that RI is a major driving force for anterior neurulation and forebrain morphogenesis. Copyright © 2017 Elsevier Inc. All rights reserved.

Unilateral hypoplasia with contralateral hypertrophy of anterior belly of digastric muscle: a case report.

Science.gov (United States)

Ochoa-Escudero, Martin; Juliano, Amy F

2016-10-01

Anomalies of the anterior belly of the digastric muscle (DM) are uncommon. We present a case of hypoplasia of the anterior belly of the left DM with hypertrophy of the anterior belly of the contralateral DM. The importance of recognizing this finding is to differentiate hypoplasia of the anterior belly of the DM from denervation atrophy, and not to confuse contralateral hypertrophy with a submental mass or lymphadenopathy. In denervation atrophy of the anterior belly of the DM, associated atrophy of the ipsilateral mylohyoid muscle is present. Hypertrophy of the anterior belly of the contralateral DM can be differentiated from a submental mass or lymphadenopathy by recognizing its isodensity on computed tomography and isointensity on magnetic resonance imaging to other muscles, without abnormal contrast enhancement.

Three-dimensional bone kinematics in an anterior laxity test of the ankle joint

NARCIS (Netherlands)

Kerkhoffs, G.; Blankevoort, L.; Kingma, I.; van Dijk, C.N.

2007-01-01

Questions addressed in this in-vitro study are (1) what are the actual three-dimensional kinematics of talus and calcaneus during an anterior drawer test as performed with the quasi-static anterior ankle tester (QAAT) (2) does laxity measurement with the QAAT represent the true anterior translation

Vocal characteristics of congenital anterior glottic webs in children: A case report.

Science.gov (United States)

Shah, Jay; White, Katherine; Dohar, Joseph

2015-06-01

This case report describes a 5-year-old girl with chronic dysphonia and high-pitched voice since birth. Vocal quality was noted to be harsh. Videostroboscopy revealed significant hyperfunction and a Type II congenital anterior glottic web. Endoscopic division of the anterior glottic web was performed with significant improvement in vocal quality and quality of life. This paper describes methods of analyzing, diagnosing, and treating anterior glottic web with a focus on quality of life. Also, unique acoustic and aerodynamic voice features are identified. No other descriptions of a voice characteristic for anterior glottic web currently exist in the literature. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

Management of anterior teeth damage caused by complex caries through aesthetic endorestoration

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Nanik Zubaidah

2011-03-01

Full Text Available Background: Dental caries is a microbiological disease that result in localized dissolution and destruction of the calcified tissue. It is multifactorial, therefore prevention must be based on a multifactorial approach. The damage of anterior teeth due to complex caries, for certain person may interfere their performance and decrease their self confidence aesthetically. Restoration of tooth form and function, especially on anterior teeth is highly valuable. Purpose: To present a case of maxillary anterior teeth with complex caries, through endorestoration treatment for recovering its original function and aesthetic. Case: The 21 years old male patient with complex carries on maxillary anterior teeth number 12, 11, 21, 22 and 23. The patient felt bad about his performance and affect his self confidence. The patient visited the clinic to repair his teeth and to get its form and function aesthetically. Case management: The endorestoration treatment was performed for carious teeth through pulpectomy followed by insertion of post retention and porcelain fused to metal crowns. Conclusion: Anterior teeth with severed complex caries can be managed through endorestoration treatment to recover its performance and function aesthetically.Latar belakang: Dental karies adalah penyakit infeksi yang berakibat kerusakan jaringan kalsifikasi dan bersifat multifactorial. Oleh karena itu pencegahan dilakukan dengan pendekatan multifactorial. Kerusakan gigi anterior karena karies kompleks untuk orang-orang tertentu mungkin berdampak pada penampilan dan penurunan kepercayaan diri karena factor estetik. Perbaikan gigi anterior dari berbagai kerusakan baik dalam hal bentuk maupun fungsinya sangat besar nilainya. Tujuan: Untuk menunjukkan kasus gigi anterior rahang atas karena karies kompleks melalui perawatan endorestorasi untuk mengembalikan fungsi gigi asli dan estetik. Kasus: Laki-laki usia 21 tahun dengan karies kompleks pada gigi anterior rahang atas 12, 11, 21

The Outcomes of Anterior Spinal Fusion for Cervical Compressive Myelopathy—A Retrospective Review

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Tsz-King Suen

2011-12-01

Conclusion: Anterior cervical decompression with bone fusion is a viable surgical option for patients with one level of anterior cervical cord compression, especially for patients with kyphosis or straight canal spine. For patients with two- to three-level involvement, anterior cervical decompression with bone fusion provides good functional result in proper selection of cases. We also identified some prognostic factors (male sex, symptoms less than 1 year, and age less than 70 years in predicting a favourable outcome of anterior spinal fusion for CCM.

Caracterización espacial de PM10 en la ciudad de Medellín mediante modelos geoestadísticos

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Libardo Antonio Londoño Ciro

2015-12-01

Full Text Available En este artículo se presenta un modelo geoestadístico para caracterizar espacialmente el comportamiento del contaminante PM10 en la ciudad de Medellín Colombia. Los datos se han tomado de nueve sitios de monitoreo en valor promedio mensual (µg/m3 durante el periodo enero 2003 a diciembre 2007. Se evaluaron diferentes modelos mediante pruebas de validación cruzada. El mejor modelo es el j-bessel. Se calculan los parámetros del modelo mediante pruebas ANOVA para agrupaciones trimestrales. Con Kriging ordinario y sistemas de información geográfica, se obtienen mapas de caracterización espacial del contaminante.

CT Analysis of the Anterior Mediastinum in Idiopathic Pulmonary Fibrosis and Nonspecific Interstitial Pneumonia

International Nuclear Information System (INIS)

Lee, Chang Hyun; Lee, Hyun Ju; Son, Kyu Ri; Chun, Eun Ju; Lim, Kun Young; Goo, Jin Mo; Im, Jung Gi; Heo, Jeong Nam; Song, Jae Woo

2006-01-01

We wanted to determine whether the amount and shape of the anterior mediastinal fat in the patients suffering with usual interstitial pneumonia (UIP) or nonspecific interstitial pneumonia (NSIP) was different from those of the normal control group. We selected patients who suffered with UIP (n 26) and NSIP (n = 26) who had undergone CT scans. Twenty-six controls were selected from individuals with normal CT findings and normal pulmonary function tests. All three groups (n = 78) were individually matched for age and gender. The amounts of anterior mediastinal fat, and the retrosternal anteroposterior (AP) and transverse dimensions of the anterior mediastinal fat were compared by one-way analysis of variance and Bonferroni's test. The shapes of the anterior mediastinum were compared using the Chi-square test. Exact logistic regression analysis and polychotomous logistic regression analysis were employed to assess whether the patients with NSIP or UIP had a tendency to show a convex shape of their anterior mediastinal fat. The amount of anterior mediastinal fat was not different among the three groups (p 0.175). For the UIP patients, the retrosternal AP dimension of the anterior mediastinal fat was shorter (p = 0.037) and the transverse dimension of the anterior mediastinal fat was longer (p = 0.001) than those of the normal control group. For the NSIP patients, only the transverse dimension was significantly longer than those of the normal control group (p < 0.001). The convex shape of the anterior mediastinum was predictive of NSIP (OR = 19.7, CI 3.32-∞, p < 0.001) and UIP (OR = 24.42, CI 4.06-∞, p < 0.001). For UIP patients, the retrosternal AP and transverse dimensions are different from those of normal individuals, whereas the amounts of anterior mediastinal fat are similar. UIP and NSIP patients have a tendency to have a convex shape of their anterior mediastinal fat

Protocolo de comunicación trabajador-robot mediante imágenes

OpenAIRE

Castilla Berduque, José Angel

2015-01-01

La idea del proyecto viene del concepto de “fábricas del futuro”, donde las barreras entre robots y humanos se rompen para que la colaboración entre ambos sea como en un equipo. Para la realización de este proyecto se ha utilizado el brazo robótico IRB120 de la marca ABB de 6 Grados de libertad, Matlab y el software Robot Studio. El Objetivo principal de este proyecto es establecer el protocolo de comunicación trabajador-robot mediante imágenes. El trabajador debería poder ...

Monitorización de un lecho fluidizado mediante acelerometría

OpenAIRE

Velasco Fernández, Mario

2013-01-01

El presente proyecto estudiará la posibilidad de monitorizar un reactor químico mediante sensores de vibración. Actualmente, no se realiza este tipo de monitorización sobre reactores químicos, y los estudios realizados al respecto son escasos. Se tratarán de establecer las posibles equivalencias entre las medidas realizadas con sensores de presión y de vibración. Para ello se realizará la monitorización de un modelo de reactor a escala, del laboratorio de la Universidad, utilizand...

Estabilización de Suelos mediante el empleo de Sales Cuaternarias

OpenAIRE

Juan M. Junco del Pino

2010-01-01

El Mundo se dirige hacia el aprovechamiento de los Suelos mediante el desarrollo de nuevas técnicas y adaptarse a las condiciones del entorno resulta importante para la Ingeniería. El mejoramiento de los suelos abre nuevas posibilidades de ahorro que pueden llegar de 20 a 45 % respecto a los costos de construcción convencional. La Estabilización Química de Suelos consiste en el empleo de sustancias químicas con el objetivo de modificar las propiedades del suelo para hacerlo más denso o increm...

Tratamiento de un efluente textil mediante electrooxidación-Salix babylonica

OpenAIRE

Sánchez Sánchez, Hilda Alejandra

2016-01-01

A nivel mundial, la industria textil es considerada una de las principales fuentes de descarga que afectan la calidad del agua debido al gran volumen que emplea en sus procesos y al uso de una amplia gama de colorantes sintéticos. En esta investigación se evaluó el tratamiento de un agua residual textil mediante un sistema acoplado de electrooxidación-Salix babylonica usando electrodos DDB. En el estudio, se construyó una celda electroquímica en batch, utilizando 5 electrodos paralelos vertic...

Lqr Robusto Mediante Incertidumbre Acotada En Los Datos

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C. Ramos

2007-07-01

Full Text Available Resumen: En este trabajo se presenta el sintonizado del Regulador Lineal Cuadrático (LQR mediante la técnica de incertidumbre acotada en los datos o Bounded Data Uncertainties (BDU con el fin de mejorar la robustez del sistema, planteándose como un Min-Max donde se busca la mejor solución en el peor escenario posible. Así se ofrece un nuevo método guiado de ajuste del LQR, considerando los límites de la incertidumbre. La aplicación a sistemas multidimensionales no es trivial, pues presenta la forma de un Two-Point Boundary Value Problem (TPBVP, el cual se resuelve iterativamente. : Técnicas Minimax, Regularización, Método de Control LQR, Robustez, Incertidumbre, Ecuaciones Matriciales de Riccati, Problema de Valor Límite, Sistemas Multidimensionales

Morphometric Analysis of Bone Resection in Anterior Petrosectomies.

Science.gov (United States)

Ahmed, Osama; Walther, Jonathan; Theriot, Krystle; Manuel, Morganne; Guthikonda, Bharat

2016-06-01

Introduction The anterior petrosectomy is a well-defined skull base approach to lesions such as petroclival meningiomas, posterior circulation aneurysms, petrous apex lesions (chondrosarcomas, cholesteatomas), ventrolateral brainstem lesions, clival chordomas, trigeminal neurinomas, and access to cranial nerves III, IV, V, and VII. Methods and Materials Fourteen anterior petrosectomies on eight cadaveric heads were performed in a skull base dissection laboratory. Predissection and postdissection thin-cut computed tomography scans were obtained to compare the bone resection. A computer program was used (InVivo5, Anatomage, San Jose, California, United States) to measure the bone resection and the improved viewing angle. Results The average bone removed in each plane was as follows: anterior to posterior plane was 10.57 mm ± 2.00 mm, superior to inferior was 9.39 mm ± 1.67 mm, and lateral to medial was 17.46 mm ± 4.64 mm. The average increased angle of view was 13.01 ± 2.35 degrees (Table 1). The average volume was 1786.94 ± 827.40 mm(3). Conclusions Anterior petrosectomy is a useful approach to access the ventrolateral brainstem region. We present a cadaveric study quantitating the volume of bone resection and improvement in the viewing angle. These data provide useful preoperative information on the utility of this skull base approach and the gain in the viewing angle after bony removal.

Cell life and death in the anterior pituitary gland: role of oestrogens.

Science.gov (United States)

Seilicovich, A

2010-07-01

Apoptotic processes play an important role in the maintenance of cell numbers in the anterior pituitary gland during physiological endocrine events. In this review, we summarise the regulation of apoptosis of anterior pituitary cells, particularly lactotrophs, somatotrophs and gonadotrophs, and analyse the possible mechanisms involved in oestrogen-induced apoptosis in anterior pituitary cells. Oestrogens exert apoptotic actions in several cell types and act as modulators of pituitary cell renewal, sensitising cells to both mitogenic and apoptotic signals. Local synthesis of growth factors and cytokines induced by oestradiol as well as changes in phenotypic features that enhance the responsiveness of anterior pituitary cells to pro-apoptotic factors may account for cyclical apoptotic activity in anterior pituitary cells during the oestrous cycle. Considering that tissue homeostasis results from a balance between cell proliferation and death and that mechanisms involved in apoptosis are tightly regulated, defects in cell death processes could have a considerable physiopathological impact.

Anterior cervical spine surgery-associated complications in a retrospective case-control study

OpenAIRE

Tasiou, Anastasia; Giannis, Theofanis; Brotis, Alexandros G.; Siasios, Ioannis; Georgiadis, Iordanis; Gatos, Haralampos; Tsianaka, Eleni; Vagkopoulos, Konstantinos; Paterakis, Konstantinos; Fountas, Kostas N.

2017-01-01

Anterior cervical spine procedures have been associated with satisfactory outcomes. However, the occurrence of troublesome complications, although uncommon, needs to be taken into consideration. The purpose of our study was to assess the actual incidence of anterior cervical spine procedure-associated complications and identify any predisposing factors. A total of 114 patients undergoing anterior cervical procedures over a 6-year period were included in our retrospective, case-control study. ...

[Esthetic analysis on immediate single-tooth implant restoration in anterior maxilla].

Science.gov (United States)

Li, Shao-wei; Wang, Guo-shi; Sha, Yan-zhi

2015-10-01

To evaluate the esthetic outcomes of immediate single-tooth implant restoration in anterior maxilla with the pink esthetic score (PES). Nine patients were treated with 9 Straumann implants by immediate single-tooth implant restoration in anterior maxilla. Assessment of PES after crown placement at 1 week (baseline) and 6 months after implantation was conducted. Statistical analysis was performed using SPSS 16.0 software package. Nine implants achieved a retention rate of 100%. PES for single-tooth implant was 10.33 ± 1.50 at 1 week and 11.44 ± 0.88 at 6 months after crown placement. The difference was significant(P=0.021). This study indicates that immediate single-tooth implant restoration in anterior maxilla is predictable. Immediate single-tooth implantation can result in good clinical esthetic results in most patients with single-tooth missing in anterior maxilla.

Paired anterior spinal arteries in a case of locked-in syndrome

International Nuclear Information System (INIS)

Kawamura, J.; Matsubayashi, K.; Fukuyama, H.; Kitanaka, H.

1981-01-01

Paired anterior spinal arteries have rarely been demonstrated angiographically, although several anatomical studies have shown that they are not uncommonly observed. This report describes the angiographic and autopsy findings of such a variation, which was observed in a 65-year-old man with a locked-in syndrome. The paired trunks of the anterior spinal artery were visualized in a retrograde fashion through the left inferior thyroid artery and a radical branch at the 5th cervical level by left retrograde brachial angiography. The uppermost segments of either vertebral artery and the lower portion of the basilar artery were opacified through these channels. The autopsy confirmed the paired trunks of the anterior spinal artery, occlusion of the vertebral arteries just caudal to the origin of the main branches of the anterior spinal artery, and an old infarct involving the pontine tegmentum and cerebellum. (orig.)

Anterior mediastinal paraganglioma: A case for preoperative embolization

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Shakir Murtaza

2012-07-01

Full Text Available Abstract Background Paraganglioma is a rare but highly vascular tumor of the anterior mediastinum. Surgical resection is a challenge owing to the close proximity to vital structures including the heart, trachea and great vessels. Preoperative embolization has been reported once to facilitate surgical treatment. Case presentation We report a case of anterior mediastinal paraganglioma that was embolized preoperatively, and was resected without the need for cardiopulmonary bypass and without major bleeding complications. Conclusion We make a case to further the role of preoperative embolization in the treatment of mediastinal paragangliomas.

A engenharia de usabilidade trabalhando em prol do direito à informação nos sistemas de informações

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José Antônio Machado Nascimento

2011-04-01

Full Text Available Verifica a usabilidade dos serviços de informação governamentais através de critérios heurísticos. Discorre sobre a perspectiva histórica das leis de acessibilidade e apresenta conceitos relacionados à acessibilidade na web. Constatou-se que é necessária a revisão da legislação brasileira sobre o assunto e o estudo constante das diretrizes de acessibilidade, pois o papel normativo do Poder Executivo nesse segmento, exercido pelo Ministério do Planejamento, Orçamento e Gestão, só se concretizará mediante a promoção e o estabelecimento de uma gestão empreendedora de recursos para esse fim.

Anterior Lens Capsule and Iris Thicknesses in Pseudoexfoliation Syndrome.

Science.gov (United States)

Batur, Muhammed; Seven, Erbil; Tekin, Serek; Yasar, Tekin

2017-11-01

The aim of this study was to evaluate anatomic properties of the lens capsule and iris by anterior segment optical coherence tomography (AS-OCT) in patients with pseudoexfoliation (PEX). This prospective study included 62 eyes of 62 patients with PEX syndrome and 43 eyes of 43 age- and gender-matched controls. All subjects underwent full ophthalmologic examinations including AS-OCT. Pupillary diameter, midperipheral stromal iris thickness, central and temporal lens capsule thicknesses, and peripheral pseudoexfoliation material thickness on the anterior lens capsule surface were measured and recorded. Mean age was 66.8 ± 9.3 years in the PEX group and 65.5 ± 8.9 years in the control group (p = 0.44). The PEX group consisted of 62 patients: 38 men (61.3%) and 24 women (38.7%); the control group included 43 subjects: 25 men (58.1%) and 18 women (41.9%). Pupillary diameter after pharmacologic mydriasis was 21% smaller in the PEX group than controls. Mean midperipheral iris thickness was 36 ± 7.2 μm (7.8%) thinner in the PEX group than that of control group (p = 0.047). The central anterior capsule was a mean of 3.40 ± 0.51 μm (18%) thicker in the PEX group compared to the control group (p = 0.0001). The temporal anterior lens capsule was a mean of 0.17 ± 0.15 μm thicker in the PEX group compared to the control group (p = 0.81). With high-resolution OCT imaging, it has become possible to evaluate the anterior lens capsule without histologic examination and demonstrate that it is thicker than normal in PEX patients.

Anterior mediastinal synovial sarcoma: A case report and literature review

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Wen-xiang YUE

2015-01-01

Full Text Available Objective　To study the clinical manifestations, pathologic features, diagnosis, treatment and prognosis of primary synovial sarcoma in the anterior mediastinum. Methods　A case of primary synovial sarcoma in the anterior mediastinum was reported. Clinical features, imaging manifestations, pathology features and therapeutic effect were analysed and the relevant literature was reviewed. Results　A 48-year-male patient was admitted with complaint of right chest pain for 4 days. Chest computerized tomography revealed a large mass located at the right anterior mediastinum, and it was primarily diagnosed as invasive thymoma. Pathological examination by CT-guided percutaneous needle biopsy manifested that, under microscope, the tumor cells were short and spindle in shape forming a nest structure, suggested it was a thymoma. The patient then underwent resection of thymoma with removal of fat and connective tissue in the anterior mediastinum. During the operation the size of the tumor was 15cm×15cm×10cm, being located at the anterior mediastinum, and it tended to bleed. The diagnosis of primary monophasic synovial sarcoma in the mediastinum was confirmed by postoperative/pathology examination. Immunohistochemistry staining showed that the tumor cells were positive for the markers Bcl-2 and EMA, but negative for the markers CK (pan and S100. The patient suffered from local recurrence with metastases to lung 4 months after surgery. The patient received 2 chemotherapeutic courses with ifosfamide, epirubicin and cisplatin. He died 6 months after surgery. Conclusion　Primary synovial sarcoma in the anterior mediastinum is an extremely rare and highly malignant tumor with poor prognosis. The diagnosis depends on the pathological features, immunohistochemistry and RT-PCR. Radical resection combined with comprehensive treatment may improve the survival rate. DOI: 10.11855/j.issn.0577-7402.2014.12.12

Unilateral Anterior Epistaxis Electrocautery versus Chemical Cautery

International Nuclear Information System (INIS)

Umar, A. S.; Rahat, Z. M.; Hussain, S. S.; Khan, M. Z.; Fareed, G.

2013-01-01

Objective: To evaluate and compare the two methods, electrocautery versus chemical cautery, for controlling unilateral anterior epistaxis and to identify the complications. Design: Randomized control trial. Place and Duration: This study was conducted in ENT Department PNS Shifa Hospital Karachi from August 2009 to June 2011. Patients and Methods: Ninety two cases with unilateral anterior epistaxis were divided using random number trials into two groups i.e. group A and group B containing 46 cases each. In group A electrocautery and in group B chemical cautery with 50% silver nitrate was done and the results were compared. Results: In this study 92 cases were divided randomly into two groups i.e. group A and group B containing 46 cases in each group. In group A 44 (95.6%) out of 46 cases were treated successfully with a single visit as an outpatient by electrocautery, the patients were called for follow up on the fifth day and then fortnightly for three months after the procedure, only 2 (4.3%) cases reported in first five days with mild recurrence of bleeding. In group B 42 (91.3%) cases out of 46 cases were treated successfully in a single visit and recurrence of bleeding occured in 4 (8.7%) cases who required a second visit during the first five days. There were no major complications found in either group except few complaints of post cauterization pain and mucosal inflammation observed slightly more in group B patients. Conclusion: Electrocautery and chemical cautery with 50% silver nitrate both are equally effective procedures to control anterior epistaxis if the bleeding point is visible and small. Both procedures are reliable and there are no major complications. Occasionally if the bleeding point in the anterior nasal septum is large then electrocautery may be a preferred option. (author)

Perineal anterior dislocation of the hip with avulsion fracture of ...

African Journals Online (AJOL)

Traumatic anterior dislocation of the hip is rare even in children. Very uncommon also is the perineal variant of the inferior type of anterior dislocation with concomitant avulsion fracture of the greater trochanter. We report such a case highlighting the peculiarity of its management. No similar case of triumvirate injury of the hip ...

[Anterior lumbar interbody fusion. Indications, technique, advantages and disadvantages].

Science.gov (United States)

Richter, M; Weidenfeld, M; Uckmann, F P

2015-02-01

Anterior lumbar interbody fusion (ALIF) for lumbar interbody fusion from L2 to the sacrum has been an established technique for decades. The advantages and disadvantages of ALIF compared to posterior interbody fusion techniques are discussed. The operative technique is described in detail. Complications and avoidance strategies are discussed. This article is based on a selective literature search using PubMed and the experience of the authors in this medical field. The advantages of ALIF compared to posterior fusion techniques are the free approach to the anterior disc space without opening of the spinal canal or the neural foramina. This gives the possibility of an extensive anterior release and placement of the largest possible cages without the risk of neural structure damage. The disadvantages of ALIF are the additional anterior approach and the related complications. The most frequent complication is due to damage of vessels. The rate of complications is significantly increased in revision surgery. The ALIF technique meaningfully expands the repertoire of the spinal surgeon especially for the treatment of non-union after interbody fusion, in patients with epidural scar tissue at the index level and spinal infections. Advantages and disadvantages should be considered when evaluating the indications for ALIF.

Modified protrusion arch for anterior crossbite correction - a case report.

Science.gov (United States)

Roy, Abhishek Singha; Singh, Gulshan Kr; Tandon, Pradeep; Chaudhary, Ramsukh

2013-01-01

Borderline and mild skeletal Class III relationships in adult patients are usually treated by orthodontic camouflage. Reasonably rood results have been achieved with nonsurgical teatment of anterior crossbite. Class III malocclusion may be associated with mandibular prognathism, maxillary retrognathism, or both. Class III maxillary retrognathism generally involves anterior crossbite, which must be opened if upper labial brackets are to be bonded. If multiple teeth are in crossbite, after opening the bite usual step is to ligate forward or advancement arch made of 0.018" or 0.020" stainless steel or NiTi wire main arch that must be kept separated 2 mm from the slot ofupper incisor braces. Two stops or omegas are made 1 mm mesial to the tubes of the molar bands that will impede main arch from slipping,and in this manner the arch will push the anterior teeth forward Here we have fabricated a modified multiple loop protrusion arch to correct an anterior crossbite with severe crowding that was not amenable to correct by advancement arches.

Imaging assessment of anterior knee pain and patellar maltracking

International Nuclear Information System (INIS)

McNally, E.G.

2001-01-01

Anterior knee pain is a common complaint in the orthopaedic clinic. The differential diagnosis is wide and the principal goal of initial assessment is to detect remediable causes. The majority of patients do not have a specific disease and increasingly interest has focused on the role of patello-femoro-tibial morphology and of patellar maltracking in the aetiology of anterior knee pain. Classification in this group of patients is poor and there is no uniform agreement on which patient groups benefit from treatment and which treatment is best. Much of the literature involves relatively small numbers of patients, is poorly controlled and there is little agreement on outcome measures [1, 2]. The purpose of this review is to outline the current status of the imaging assessment of recalcitrant anterior knee pain with particular reference to patellar maltracking. (orig.)

Operation for recurrent cystocele with anterior colporrhaphy or non-absorbable mesh: patient reported outcomes

DEFF Research Database (Denmark)

Nüssler, Emil Karl; Greisen, Susanne; Kesmodel, Ulrik Schiøler

2013-01-01

Abstract INTRODUCTION AND HYPOTHESIS: The aim of this study was to compare patient reported outcomes and complications after repair of recurrent anterior vaginal wall prolapse in routine health care settings using standard anterior colporrhaphy or non-absorbable mesh. METHODS: The study is based...... on prospective data from the Swedish National Register for Gynaecological Surgery. 286 women were operated on for recurrent anterior vaginal wall prolapse in 2008-2010; 157 women had an anterior colporrhaphy and 129 were operated on with a non-absorbable mesh. Pre-, and perioperative data were collected from...... (0.6 %) in the anterior colporrhaphy group (p = 0.58). The infection rate was higher after mesh (8.5 %) than after anterior colporrhaphy (2.5 %; OR 3.19 ; 1.07-14.25). CONCLUSION: Implantation of synthetic mesh during operation for recurrent cystocele more than doubled the cure rate, whereas...

A Review on Biomechanics of Anterior Cruciate Ligament and Materials for Reconstruction

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M. Marieswaran

2018-01-01

Full Text Available The anterior cruciate ligament is one of the six ligaments in the human knee joint that provides stability during articulations. It is relatively prone to acute and chronic injuries as compared to other ligaments. Repair and self-healing of an injured anterior cruciate ligament are time-consuming processes. For personnel resuming an active sports life, surgical repair or replacement is essential. Untreated anterior cruciate ligament tear results frequently in osteoarthritis. Therefore, understanding of the biomechanics of injury and properties of the native ligament is crucial. An abridged summary of the prominent literature with a focus on key topics on kinematics and kinetics of the knee joint and various loads acting on the anterior cruciate ligament as a function of flexion angle is presented here with an emphasis on the gaps. Briefly, we also review mechanical characterization composition and anatomy of the anterior cruciate ligament as well as graft materials used for replacement/reconstruction surgeries. The key conclusions of this review are as follows: (a the highest shear forces on the anterior cruciate ligament occur during hyperextension/low flexion angles of the knee joint; (b the characterization of the anterior cruciate ligament at variable strain rates is critical to model a viscoelastic behavior; however, studies on human anterior cruciate ligament on variable strain rates are yet to be reported; (c a significant disparity on maximum stress/strain pattern of the anterior cruciate ligament was observed in the earlier works; (d nearly all synthetic grafts have been recalled from the market; and (e bridge-enhanced repair developed by Murray is a promising technique for anterior cruciate ligament reconstruction, currently in clinical trials. It is important to note that full extension of the knee is not feasible in the case of most animals and hence the loading pattern of human ACL is different from animal models. Many of the

Caracterización del mercado de arrendamientos urbano para el segmento de la población de bajos ingresos

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Jorge Enrique Torres Ramírez

2008-01-01

Full Text Available Siguiendo los preceptos de la economía urbana, la mayor parte de las necesidades habitacionales se atiende con los servicios derivados de los inmuebles que integran el stock conformado históricamente, representando la oferta y demanda de edificaciones nuevas una proporción mínima del mercado total. Así, los mercados de unidades usadas y, especialmente, los arrendamientos, constituyen segmentos que concentran un volumen de transacciones cuya dimensión, en términos físicos y económicos, representa el mayor componente del mercado total de edificaciones. Los resultados de esta investigación permiten hacer un reconocimiento al aporte del mercado de arrendamientos sobre los niveles actuales de calidad habitacional y de vida en Colombia. Puede plantearse así que sin esta oferta, generada por los hogares de manera directa y en gran parte por formas de producción social, el stock habitacional estaría aún más rezagado respecto de las necesidades habitacionales actuales de los hogares colombianos. En Colombia, el mercado de arrendamientos correspondiente a los hogares de menores ingresos ofrece también un potencial de desarrollo atractivo para los empresarios del sector de la edificación urbana y de la intermediación inmobiliaria. El stock debe crecer más rápido y esta forma de tenencia tiene posibilidades concretas de alojar una importante oferta formal actualmente inexistente.

Anterior mediastinal masses in the Framingham Heart Study: Prevalence and CT image characteristics

International Nuclear Information System (INIS)

Araki, Tetsuro; Nishino, Mizuki; Gao, Wei; Dupuis, Josée; Washko, George R.; Hunninghake, Gary M.; Murakami, Takamichi; O’Connor, George T.; Hatabu, Hiroto

2015-01-01

To investigate the prevalence and CT image characteristics of anterior mediastinal masses in a population-based cohort and their association with the demographics of the participants. Chest CT scans of 2571 Framingham Heart Study participants (mean age 58.9 years, 51% female) were evaluated by two board-certified radiologists with expertise in thoracic imaging for the presence of anterior mediastinal masses, their shape, contour, location, invasion of adjacent structures, fat content, and calcification. For participants with anterior mediastinal masses, a previous cardiac CT scan was reviewed for interval size change of the masses, when available. The demographics of the participants were studied for any association with the presence of anterior mediastinal masses. Of 2571, 23 participants (0.9%, 95% CI: 0.6–1.3) had anterior mediastinal masses on CT. The most common CT characteristics were oval shape, lobular contour, and midline location, showing soft tissue density (median 32.1 HU). Fat content was detected in a few cases (9%, 2/23). Six out of eight masses with available prior cardiac CT scans demonstrated an interval growth over a median period of 6.5 years. No risk factors for anterior mediastinal masses were detected among participants’ demographics, including age, sex, BMI, and cigarette smoking. The prevalence of anterior mediastinal masses is 0.9% in the Framingham Heart Study. Those masses may increase in size when observed over 5–7 years. Investigation of clinical significance in incidentally found anterior mediastinal masses with a longer period of follow-up would be necessary

Phase image characterization of ventricular contraction in left anterior hemiblock

International Nuclear Information System (INIS)

Ono, Akifumi; Mizuno, Haruyoshi; Tahara, Yorio; Ishikawa, Kyozo

1991-01-01

We investigated whether or not left anterior hemiblock is present in patients with left axis deviation using first-harmonic Fourier analysis of gated blood-pool images. Gated blood-pool images were taken in 50 patients without contraction abnormality. They included 14 normal subjects, 8 patients with right bundle branch block (RBBB), 20 with left axis deviation (LAD) and 8 with both RBBB and LAD (RBBB+LAD). ECG gated blood-pool scans were acquired in the anterior and 'best septal' left anterior oblique projections. First, the phase images were displayed cinematically as a continuous-loop movie. Next, for quantitative analysis of the phase image, the whole left ventricular and left ventricular high lateral regions of interest were drawn. The 'regional phase shift' (RPS) was then defined as {RPS=A-a} where 'A' is the mean value of the whole left ventricular phase angles and 'a' is that of phase angles in the high lateral region. The left ventricular phase changes and the RPSs in the RBBB and LAD groups were similar to those in the normal group. In the RBBB+LAD group, the latest phase changes occurred in the high anterolateral region. The RPSs of this group were significantly lower than those in the other 3 groups (p<0.01). These data suggest that left anterior hemiblock might coexist with RBBB in patients with RBBB+LAD, whereas left anterior hemiblock might not exist in the majority of patients with LAD alone. (author)

Experience with titanium cages in anterior cervical discectomy and fusion

International Nuclear Information System (INIS)

Junaid, M.; Afsheen, A.; Bukhari, S.S.; Rashid, M.U.; Kalsoom, A.

2016-01-01

Background: Anterior cervical discectomy is a common procedure for treating patients for cervical disc prolapse. This study was conducted to study the surgical outcome and demographic characteristics of patients who were treated for anterior cervical disc prolapse. Methods: Study was conducted in the combined military hospital (CMH) Peshawar. Study interval was 3 years from 1st September, 2011 to 31st August, 2014. Total number of patients were 84. Males were 54 (64.28 percentage) and females were 30 (35.71 percentage). All the patients had undergone the procedure of anterior cervical discectomy and fusion with titanium cages (ACDF). All the patients had plain MRI cervical spine done for diagnosis of anterior cervical disc prolapse. Results: Total 84 patients were operated. In the patients who complained of brachialgia, 100 percentage improvement was seen after the operation. Three (3.5 percentage) of the patients, who presented with axial neck pain, continued to complain of pain and 2 (2.5 percentage) of the patients complained of pain at the donor site after the operation. One of the patient had dural tear which resulted in subcutaneous cerebrospinal fluid (CSF) accumulation and was treated conservatively with repeated aspiration. Fusion rate was 100 percentage with titanium cages used for fusion after anterior cervical discectomy. No complications were noted after the surgery at 1 year of interval. Conclusion: Results with titanium cages are expectedly good. Symptoms resolved and fusion rate was 100 percentage at 1 year follow up. (author)

Compression and contact area of anterior strut grafts in spinal instrumentation: a biomechanical study.

Science.gov (United States)

Pizanis, Antonius; Holstein, Jörg H; Vossen, Felix; Burkhardt, Markus; Pohlemann, Tim

2013-08-26

Anterior bone grafts are used as struts to reconstruct the anterior column of the spine in kyphosis or following injury. An incomplete fusion can lead to later correction losses and compromise further healing. Despite the different stabilizing techniques that have evolved, from posterior or anterior fixating implants to combined anterior/posterior instrumentation, graft pseudarthrosis rates remain an important concern. Furthermore, the need for additional anterior implant fixation is still controversial. In this bench-top study, we focused on the graft-bone interface under various conditions, using two simulated spinal injury models and common surgical fixation techniques to investigate the effect of implant-mediated compression and contact on the anterior graft. Calf spines were stabilised with posterior internal fixators. The wooden blocks as substitutes for strut grafts were impacted using a "pressfit" technique and pressure-sensitive films placed at the interface between the vertebral bone and the graft to record the compression force and the contact area with various stabilization techniques. Compression was achieved either with posterior internal fixator alone or with an additional anterior implant. The importance of concomitant ligament damage was also considered using two simulated injury models: pure compression Magerl/AO fracture type A or rotation/translation fracture type C models. In type A injury models, 1 mm-oversized grafts for impaction grafting provided good compression and fair contact areas that were both markedly increased by the use of additional compressing anterior rods or by shortening the posterior fixator construct. Anterior instrumentation by itself had similar effects. For type C injuries, dramatic differences were observed between the techniques, as there was a net decrease in compression and an inadequate contact on the graft occurred in this model. Under these circumstances, both compression and the contact area on graft could only

N-terminal prolactin-derived fragments, vasoinhibins, are proapoptoptic and antiproliferative in the anterior pituitary.

Science.gov (United States)

Ferraris, Jimena; Radl, Daniela Betiana; Zárate, Sandra; Jaita, Gabriela; Eijo, Guadalupe; Zaldivar, Verónica; Clapp, Carmen; Seilicovich, Adriana; Pisera, Daniel

2011-01-01

The anterior pituitary is under a constant cell turnover modulated by gonadal steroids. In the rat, an increase in the rate of apoptosis occurs at proestrus whereas a peak of proliferation takes place at estrus. At proestrus, concomitant with the maximum rate of apoptosis, a peak in circulating levels of prolactin is observed. Prolactin can be cleaved to different N-terminal fragments, vasoinhibins, which are proapoptotic and antiproliferative factors for endothelial cells. It was reported that a 16 kDa vasoinhibin is produced in the rat anterior pituitary by cathepsin D. In the present study we investigated the anterior pituitary production of N-terminal prolactin-derived fragments along the estrous cycle and the involvement of estrogens in this process. In addition, we studied the effects of a recombinant vasoinhibin, 16 kDa prolactin, on anterior pituitary apoptosis and proliferation. We observed by Western Blot that N-terminal prolactin-derived fragments production in the anterior pituitary was higher at proestrus with respect to diestrus and that the content and release of these prolactin forms from anterior pituitary cells in culture were increased by estradiol. A recombinant preparation of 16 kDa prolactin induced apoptosis (determined by TUNEL assay and flow cytometry) of cultured anterior pituitary cells and lactotropes from ovariectomized rats only in the presence of estradiol, as previously reported for other proapoptotic factors in the anterior pituitary. In addition, 16 kDa prolactin decreased forskolin-induced proliferation (evaluated by BrdU incorporation) of rat total anterior pituitary cells and lactotropes in culture and decreased the proportion of cells in S-phase of the cell cycle (determined by flow cytometry). In conclusion, our study indicates that the anterior pituitary production of 16 kDa prolactin is variable along the estrous cycle and increased by estrogens. The antiproliferative and estradiol-dependent proapoptotic actions of this

N-terminal prolactin-derived fragments, vasoinhibins, are proapoptoptic and antiproliferative in the anterior pituitary.

Directory of Open Access Journals (Sweden)

Jimena Ferraris

Full Text Available The anterior pituitary is under a constant cell turnover modulated by gonadal steroids. In the rat, an increase in the rate of apoptosis occurs at proestrus whereas a peak of proliferation takes place at estrus. At proestrus, concomitant with the maximum rate of apoptosis, a peak in circulating levels of prolactin is observed. Prolactin can be cleaved to different N-terminal fragments, vasoinhibins, which are proapoptotic and antiproliferative factors for endothelial cells. It was reported that a 16 kDa vasoinhibin is produced in the rat anterior pituitary by cathepsin D. In the present study we investigated the anterior pituitary production of N-terminal prolactin-derived fragments along the estrous cycle and the involvement of estrogens in this process. In addition, we studied the effects of a recombinant vasoinhibin, 16 kDa prolactin, on anterior pituitary apoptosis and proliferation. We observed by Western Blot that N-terminal prolactin-derived fragments production in the anterior pituitary was higher at proestrus with respect to diestrus and that the content and release of these prolactin forms from anterior pituitary cells in culture were increased by estradiol. A recombinant preparation of 16 kDa prolactin induced apoptosis (determined by TUNEL assay and flow cytometry of cultured anterior pituitary cells and lactotropes from ovariectomized rats only in the presence of estradiol, as previously reported for other proapoptotic factors in the anterior pituitary. In addition, 16 kDa prolactin decreased forskolin-induced proliferation (evaluated by BrdU incorporation of rat total anterior pituitary cells and lactotropes in culture and decreased the proportion of cells in S-phase of the cell cycle (determined by flow cytometry. In conclusion, our study indicates that the anterior pituitary production of 16 kDa prolactin is variable along the estrous cycle and increased by estrogens. The antiproliferative and estradiol-dependent proapoptotic

CT Analysis of the Anterior Mediastinum in Idiopathic Pulmonary Fibrosis and Nonspecific Interstitial Pneumonia

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Lee, Chang Hyun; Lee, Hyun Ju; Son, Kyu Ri; Chun, Eun Ju; Lim, Kun Young; Goo, Jin Mo; Im, Jung Gi [Seoul National University College of Medicine, Seoul (Korea, Republic of); Heo, Jeong Nam; Song, Jae Woo [University of Ulsan College of Medicine, Seoul (Korea, Republic of)

2006-09-15

We wanted to determine whether the amount and shape of the anterior mediastinal fat in the patients suffering with usual interstitial pneumonia (UIP) or nonspecific interstitial pneumonia (NSIP) was different from those of the normal control group. We selected patients who suffered with UIP (n 26) and NSIP (n = 26) who had undergone CT scans. Twenty-six controls were selected from individuals with normal CT findings and normal pulmonary function tests. All three groups (n = 78) were individually matched for age and gender. The amounts of anterior mediastinal fat, and the retrosternal anteroposterior (AP) and transverse dimensions of the anterior mediastinal fat were compared by one-way analysis of variance and Bonferroni's test. The shapes of the anterior mediastinum were compared using the Chi-square test. Exact logistic regression analysis and polychotomous logistic regression analysis were employed to assess whether the patients with NSIP or UIP had a tendency to show a convex shape of their anterior mediastinal fat. The amount of anterior mediastinal fat was not different among the three groups (p 0.175). For the UIP patients, the retrosternal AP dimension of the anterior mediastinal fat was shorter (p = 0.037) and the transverse dimension of the anterior mediastinal fat was longer (p = 0.001) than those of the normal control group. For the NSIP patients, only the transverse dimension was significantly longer than those of the normal control group (p < 0.001). The convex shape of the anterior mediastinum was predictive of NSIP (OR = 19.7, CI 3.32-{infinity}, p < 0.001) and UIP (OR = 24.42, CI 4.06-{infinity}, p < 0.001). For UIP patients, the retrosternal AP and transverse dimensions are different from those of normal individuals, whereas the amounts of anterior mediastinal fat are similar. UIP and NSIP patients have a tendency to have a convex shape of their anterior mediastinal fat.

Unilateral anterior ischemic optic neuropathy

DEFF Research Database (Denmark)

Herbst, Kristina; Sander, Birgit; Lund-Andersen, Henrik

2013-01-01

of this study was to investigate the ipRGC mediated pupil response in patients with a unilateral non-arteritic anterior ischemic optic neuropathy (NAION). Consensual pupil responses during and after exposure to continuous 20 s blue (470 nm) or red (660 nm) light of high intensity (300 cd/m(2)) were recorded...

Etiology of the anterior ankle impingement syndrome: A descriptive anatomical study

NARCIS (Netherlands)

Tol, Johannes L.; van Dijk, C. Niek

2004-01-01

Background: In the anterior ankle impingement syndrome, recurrent traction to the anterior joint capsule is stated to be the cause of formation of talotibial osteophytes. This hypothesis involves the assumption that the osteophytes originate at the site where a capsular attachment is located. A soft

Effect of retinoic acid on midkine gene expression in rat anterior pituitary cells.

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Maliza, Rita; Fujiwara, Ken; Azuma, Morio; Kikuchi, Motoshi; Yashiro, Takashi

2017-06-29

Retinoic acid (RA) is converted from retinal by retinaldehyde dehydrogenases (RALDHs) and is an essential signaling molecule in embryonic and adult tissue. We previously reported that RALDH1 was produced in the rat anterior pituitary gland and hypothesized that RA was generated in the gland. Midkine (MK) is an RA-inducible growth factor, and MK production in the rat anterior pituitary gland was recently reported. However, the mechanism that regulates gene expression of MK in the pituitary gland has not been determined. To investigate regulation of MK production in the anterior pituitary gland, we analyzed changes in MK mRNA in cultured rat anterior pituitary cells. We identified MK-expressing cells by double-staining with in situ hybridization and immunohistochemical techniques for RALDH1. MK mRNA was expressed in RALDH1-producing cells in the anterior pituitary gland. Using isolated anterior pituitary cells of rats, we examined the effect of RA on gene expression of MK. Quantitative real-time PCR revealed that 72 h exposure to a concentration of 10 -6 M of retinal and all-trans retinoic acid increased MK mRNA levels by about 2-fold. Moreover, the stimulatory effect of all-trans retinoic acid was mimicked by the RA receptor agonist Am80. This is the first report to show that RA is important in regulating MK expression in rat anterior pituitary gland.

Carotid-anterior cerebral artery anastomosis on MR angiography: a university hospital-based study

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Uchino, Akira; Saito, Naoko; Okada, Yoshitaka; Inoue, Kaiji [Saitama Medical University International Medical Center, Department of Diagnostic Radiology, Hidaka, Saitama (Japan)

2012-01-15

Rarely in the anterior circulation, an anastomosis of the carotid and anterior cerebral arteries occurs when an anomalous branch arises from the ophthalmic segment of the internal carotid artery and anastomoses with the A1-A2 junction of the anterior communicating artery. Right-side predominance is known. To our knowledge, the incidence of carotid-anterior cerebral artery anastomosis has not been reported, so we researched cases in our institution records to determine incidence and investigated characteristic features of the condition on magnetic resonance (MR) angiography. To isolate such cases, we retrospectively reviewed cranial MR angiographic images of 3,491 consecutive patients in our institution. We found three cases with carotid-anterior cerebral artery anastomosis (two men, one woman), representing an incidence of 0.086%. The anastomosis was on the right in all three cases. A normal A1 segment of the anterior cerebral artery (ACA) was present in two cases but could not be identified in the remaining case on MR angiographic images that included source images. Two of the three patients demonstrated associated arterial variations in their carotid systems. On MR angiography, we observed a 0.086% incidence of carotid-anterior cerebral artery anastomosis in our institution and reaffirmed the right-side predominance of this anomaly. We found a high frequency of other associated arterial variations in the carotid system. (orig.)

Complications and Management of Deep Anterior Lamellar Keratoplasty

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Banu Torun Acar

2014-10-01

Full Text Available Objectives: To report the intraoperative and postoperative follow-up complications and management of these in deep anterior lamellar keratoplasty (DALK surgery. Materials and Methods: Two hundred eighty-four eyes of 252 patients followed up in our cornea clinic who underwent DALK using Anwar’s big-bubble technique with healthy Descemet’s membrane and endothelium were included in this study. Intraoperative and postoperative complications as well as the management and treatment of these complications were evaluated. Results: Big bubble was created in 220 (77.5% eyes of 284 eyes, and lamellar dissection was performed in 64 (22.5% eyes. Perforation occurred during trephination in 4 eyes, and the procedure was accomplished by penetrating keratoplasty (PK. Intraoperative microperforation occurred in 44 eyes. Perforation enlarged in 4 eyes and PK was performed. Operation was continued in 40 eyes with air injection into the anterior chamber. In postopertive follow-up period, double anterior chamber (DAC occurred in 32 of 40 eyes. DAC spontaneously regressed in 8 eyes, and air was given into the anterior chamber with a second surgical intervention in 24 eyes. DAC improved in 20 eyes. Four eyes underwent PK. Fungal keratitis evolved at the interface in one eye, because of no healing during the follow-up period, this eye underwent PK under antifungal therapy. Eyes with interface haze and Descemet’s membrane folds were followed. Conclusion: DALK is a difficult technique with a steep learning curve. In addition to the complications seen in PK, specific complications can occur in lamellar surgery. (Turk J Ophthalmol 2014; 44: 337-40

Spindle neurons of the human anterior cingulate cortex

Science.gov (United States)

Nimchinsky, E. A.; Vogt, B. A.; Morrison, J. H.; Hof, P. R.; Bloom, F. E. (Principal Investigator)

1995-01-01

The human anterior cingulate cortex is distinguished by the presence of an unusual cell type, a large spindle neuron in layer Vb. This cell has been noted numerous times in the historical literature but has not been studied with modern neuroanatomic techniques. For instance, details regarding the neuronal class to which these cells belong and regarding their precise distribution along both ventrodorsal and anteroposterior axes of the cingulate gyrus are still lacking. In the present study, morphological features and the anatomic distribution of this cell type were studied using computer-assisted mapping and immunocytochemical techniques. Spindle neurons are restricted to the subfields of the anterior cingulate cortex (Brodmann's area 24), exhibiting a greater density in anterior portions of this area than in posterior portions, and tapering off in the transition zone between anterior and posterior cingulate cortex. Furthermore, a majority of the spindle cells at any level is located in subarea 24b on the gyral surface. Immunocytochemical analysis revealed that the neurofilament protein triple was present in a large percentage of these neurons and that they did not contain calcium-binding proteins. Injections of the carbocyanine dye DiI into the cingulum bundle revealed that these cells are projection neurons. Finally, spindle cells were consistently affected in Alzheimer's disease cases, with an overall loss of about 60%. Taken together, these observations indicate that the spindle cells of the human cingulate cortex represent a morphological subpopulation of pyramidal neurons whose restricted distribution may be associated with functionally distinct areas.

Bioengineered anterior cruciate ligament

Science.gov (United States)

Martin, Ivan (Inventor); Altman, Gregory (Inventor); Kaplan, David (Inventor); Vunjak-Novakovic, Gordana (Inventor)

2001-01-01

The present invention provides a method for producing an anterior cruciate ligament ex vivo. The method comprises seeding pluripotent stem cells in a three dimensional matrix, anchoring the seeded matrix by attachment to two anchors, and culturing the cells within the matrix under conditions appropriate for cell growth and regeneration, while subjecting the matrix to one or more mechanical forces via movement of one or both of the attached anchors. Bone marrow stromal cells are preferably used as the pluripotent cells in the method. Suitable matrix materials are materials to which cells can adhere, such as a gel made from collagen type I. Suitable anchor materials are materials to which the matrix can attach, such as Goinopra coral and also demineralized bone. Optimally, the mechanical forces to which the matrix is subjected mimic mechanical stimuli experienced by an anterior cruciate ligament in vivo. This is accomplished by delivering the appropriate combination of tension, compression, torsion, and shear, to the matrix. The bioengineered ligament which is produced by this method is characterized by a cellular orientation and/or matrix crimp pattern in the direction of the applied mechanical forces, and also by the production of collagen type I, collagen type III, and fibronectin proteins along the axis of mechanical load produced by the mechanical forces. Optimally, the ligament produced has fiber bundles which are arranged into a helical organization. The method for producing an anterior cruciate ligament can be adapted to produce a wide range of tissue types ex vivo by adapting the anchor size and attachment sites to reflect the size of the specific type of tissue to be produced, and also adapting the specific combination of forces applied, to mimic the mechanical stimuli experienced in vivo by the specific type of tissue to be produced. The methods of the present invention can be further modified to incorporate other stimuli experienced in vivo by the

Head position in the MEG helmet affects the sensitivity to anterior sources.

Science.gov (United States)

Marinkovic, K; Cox, B; Reid, K; Halgren, E

2004-11-30

Current MEG instruments derive the whole-head coverage by utilizing a helmet-shaped opening at the bottom of the dewar. These helmets, however, are quite a bit larger than most people's heads so subjects commonly lean against the back wall of the helmet in order to maintain a steady position. In such cases the anterior brain sources may be too distant to be picked up by the sensors reliably. Potential "invisibility" of the frontal and anterior temporal sources may be particularly troublesome for the studies of cognition and language, as they are subserved significantly by these areas. We examined the sensitivity of the distributed anatomically-constrained MEG (aMEG) approach to the head position ("front" vs. "back") secured within a helmet with custom-tailored bite-bars during a lexical decision task. The anterior head position indeed resulted in much greater sensitivity to language-related activity in frontal and anterior temporal locations. These results emphasize the need to adjust the head position in the helmet in order to maximize the "visibility" of the sources in the anterior brain regions in cognitive and language tasks.

Agenesis of internal carotid artery associated with congenital anterior hypopituitarism

International Nuclear Information System (INIS)

Moon, W.-J.; Porto, L.; Lanfermann, H.; Zanella, F.E.; Weis, R.

2002-01-01

We report a rare case of unilateral agenesis of the internal carotid artery in association with congenital anterior hypopituitarism. The collateral circulation is supplied by a transsellar intercavernous anastomotic vessel connecting the internal carotid arteries. These abnormalities are well depicted on MRI and MRA. The agenesis of the internal carotid artery may explain the pathogenesis of some of congenital anterior hypopituitarism. (orig.)

Incidence and Outcomes of Acute Implant Extrusion Following Anterior Cervical Spine Surgery.

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Smith, Gabriel A; Pace, Jonathan; Corriveau, Mark; Lee, Sungho; Mroz, Thomas E; Nassr, Ahmad; Fehlings, Michael G; Hart, Robert A; Hilibrand, Alan S; Arnold, Paul M; Bumpass, David B; Gokaslan, Ziya; Bydon, Mohamad; Fogelson, Jeremy L; Massicotte, Eric M; Riew, K Daniel; Steinmetz, Michael P

2017-04-01

Multi-institutional retrospective case series of 8887 patients who underwent anterior cervical spine surgery. Anterior decompression from discectomy or corpectomy is not without risk. Surgical morbidity ranges from 9% to 20% and is likely underreported. Little is known of the incidence and effects of rare complications on functional outcomes following anterior spinal surgery. In this retrospective review, we examined implant extrusions (IEs) following anterior cervical fusion. A retrospective multicenter case series study involving 21 high-volume surgical centers from the AOSpine North America Clinical Research Network. Medical records for 17 625 patients who received cervical spine surgery (levels from C2 to C7) between January 1, 2005, and December 31, 2011, were reviewed to identify occurrence of 21 predefined treatment complications. Following anterior cervical fusion, the incidence of IE ranged from 0.0% to 0.8% across 21 institutions with 11 cases reported. All surgeries involved multiple levels, and 7/11 (64%) involved either multilevel corpectomies or hybrid constructs with at least one adjacent discectomy to a corpectomy. In 7/11 (64%) patients, constructs ended with reconstruction or stabilization at C7. Nine patients required surgery for repair and stabilization following IE. Average length of hospital stay after IE was 5.2 days. Only 2 (18%) had residual deficits after reoperation. IE is a very rare complication after anterior cervical spine surgery often requiring revision. Constructs requiring multilevel reconstruction, especially at the cervicothoracic junction, have a higher risk for failure, and surgeons should proceed with caution in using an anterior-only approach in these demanding cases. Surgeons can expect most patients to regain function after reoperation.

Anterior cervical spine surgery-associated complications in a retrospective case-control study.

Science.gov (United States)

Tasiou, Anastasia; Giannis, Theofanis; Brotis, Alexandros G; Siasios, Ioannis; Georgiadis, Iordanis; Gatos, Haralampos; Tsianaka, Eleni; Vagkopoulos, Konstantinos; Paterakis, Konstantinos; Fountas, Kostas N

2017-09-01

Anterior cervical spine procedures have been associated with satisfactory outcomes. However, the occurrence of troublesome complications, although uncommon, needs to be taken into consideration. The purpose of our study was to assess the actual incidence of anterior cervical spine procedure-associated complications and identify any predisposing factors. A total of 114 patients undergoing anterior cervical procedures over a 6-year period were included in our retrospective, case-control study. The diagnosis was cervical radiculopathy, and/or myelopathy due to degenerative disc disease, cervical spondylosis, or traumatic cervical spine injury. All our participants underwent surgical treatment, and complications were recorded. The most commonly performed procedure (79%) was anterior cervical discectomy and fusion (ACDF). Fourteen patients (12.3%) underwent anterior cervical corpectomy and interbody fusion, seven (6.1%) ACDF with plating, two (1.7%) odontoid screw fixation, and one anterior removal of osteophytes for severe Forestier's disease. Mean follow-up time was 42.5 months (range, 6-78 months). The overall complication rate was 13.2%. Specifically, we encountered adjacent intervertebral disc degeneration in 2.7% of our cases, dysphagia in 1.7%, postoperative soft tissue swelling and hematoma in 1.7%, and dural penetration in 1.7%. Additionally, esophageal perforation was observed in 0.9%, aggravation of preexisting myelopathy in 0.9%, symptomatic recurrent laryngeal nerve palsy in 0.9%, mechanical failure in 0.9%, and superficial wound infection in 0.9%. In the vast majority anterior cervical spine surgery-associated complications are minor, requiring no further intervention. Awareness, early recognition, and appropriate management, are of paramount importance for improving the patients' overall functional outcome.

Concomitant surgical correction of severe stress urinary incontinence and anterior vaginal wall prolapse by anterior vaginal wall wrap: 18 months outcomes

Science.gov (United States)

Zargham, Mahtab; Alizadeh, Farshid; Tadayyon, Farhad; Khorrami, Mohammad-Hatef; Nouri-Mahdavi, Kia; Gharaati, Mohammad Reza; Izadpanahi, Mohammad Hossein; Yazdani, Mohammad; Mazdak, Hamid

2013-01-01

Background: The aim of this study is to evaluate the outcome of an innovative, minimally invasive sling technique with autologous tissue in women with concomitant incontinence and anterior vaginal wall prolapse (AVWP). Materials and Methods: Fifty-six women with stress urinary incontinence (SUI) or mixed urinary incontinence and AVWP were randomly assigned into two groups: In Group A (26 patients), anterior colporrhaphy (Kelly placation) and sling placement using a strip of anterior vaginal wall were performed, and in Group B (30 patients), transvaginal mesh correction of AVWP and tension-free vaginal tape (TVT) insertion (retropubic – craniocaudal route) using polypropylene mesh were carried out. The patients were followed-up for over 18 months and were assessed objectively using a 48 h frequency-volume chart, a 48 h pad test and a standardized stress test. Related surgical complications and outcomes were recorded and compared. Results: Surgical cure rates for Group A and Group B at the first (3 days) and last (18 months) post-operative visits were 62% and 84%; and 54%, and 72%, respectively (P = 0.09 and 0.31). Complications occurred in 9 patients (44%) of Group B, but only 3 patients (12%) in Group A. Conclusion: Vaginal sling surgery using an anterior vaginal wall strip can improve SUI and in comparison with propylene mesh is associated with lower complication rates. Although, the surgical success rate of this technique is lower than T-Sling, larger studies with selected patients will help assess the suitable patients for this pelvic reconstructive surgery. PMID:24516492

Concomitant surgical correction of severe stress urinary incontinence and anterior vaginal wall prolapse by anterior vaginal wall wrap: 18 months outcomes

Directory of Open Access Journals (Sweden)

Mahtab Zargham

2013-01-01

Full Text Available Background: The aim of this study is to evaluate the outcome of an innovative, minimally invasive sling technique with autologous tissue in women with concomitant incontinence and anterior vaginal wall prolapse (AVWP. Materials and Methods : Fifty-six women with stress urinary incontinence (SUI or mixed urinary incontinence and AVWP were randomly assigned into two groups: In Group A (26 patients, anterior colporrhaphy (Kelly placation and sling placement using a strip of anterior vaginal wall were performed, and in Group B (30 patients, transvaginal mesh correction of AVWP and tension-free vaginal tape (TVT insertion (retropubic - craniocaudal route using polypropylene mesh were carried out. The patients were followed-up for over 18 months and were assessed objectively using a 48 h frequency-volume chart, a 48 h pad test and a standardized stress test. Related surgical complications and outcomes were recorded and compared. Results: Surgical cure rates for Group A and Group B at the first (3 days and last (18 months post-operative visits were 62% and 84%; and 54%, and 72%, respectively (P = 0.09 and 0.31. Complications occurred in 9 patients (44% of Group B, but only 3 patients (12% in Group A. Conclusion: Vaginal sling surgery using an anterior vaginal wall strip can improve SUI and in comparison with propylene mesh is associated with lower complication rates. Although, the surgical success rate of this technique is lower than T-Sling, larger studies with selected patients will help assess the suitable patients for this pelvic reconstructive surgery.

Anterior ankle impingement after tendo-Achilles lengthening for long-standing equinus deformity in residual poliomyelitis.

Science.gov (United States)

Sung, Ki Hyuk; Chung, Chin Youb; Lee, Kyoung Min; Lee, Seung Yeol; Park, Moon Seok

2013-09-01

This study was performed to investigate anterior ankle impingement after tendo-Achilles lengthening for long-standing equinus deformity in patients with residual poliomyelitis and to investigate whether the severity of preoperative equinus deformity affected the occurrence of symptomatic anterior impingement. Twenty-seven consecutive patients (mean age, 43.8 ± 9.4 years) with residual poliomyelitis who underwent tendo-Achilles lengthening for equinus foot deformity were included. On lateral foot-ankle weight-bearing radiographs, the tibiocalcaneal angle, plantigrade angle, and McDermott grade were measured and the presence of anterior blocking spur was evaluated. Eleven patients (40.7%) had anterior ankle impingement on radiographic findings preoperatively and 24 patients (88.9%) at latest follow-up. There was a significant difference in McDermott grade between preoperative and latest follow-up (P poliomyelitis had anterior ankle impingement after tendo-Achilles lengthening for long-standing equinus deformity, and the presence of symptomatic anterior ankle impingement was significantly associated with the severity of the equinus deformity. Therefore, for residual poliomyelitis patients with severe long-standing equinus deformity, surgeons should consider the possibility of a subsequent anterior procedure for anterior impingement after tendo-Achilles lengthening. Level IV, retrospective case series.

Biomechanical comparison of supraacetabular external fixation and anterior pelvic bridge plating.

Science.gov (United States)

Çavuşoğlu, Ali Turgay; Erbay, Fatma Kübra; Özsoy, Mehmet Hakan; Demir, Teyfik

2017-10-01

Unstable pelvic ring injuries are complex and risky injuries due to high morbidity and mortality. Although anterior pelvic external fixator is a suitable method for rapid stabilization of an injured pelvic ring, due to some disadvantages such as high complication rate, nerve damage, and difficulties of patient's mobility and comfort, there has recently been increased searching for alternative methods for stabilization of the pelvic ring. Pubic symphysis zone freely moves in pelvic models. This study aims to evaluate the biomechanical stability of anterior pelvic bridge plating and compare it with supraacetabular external fixators in an untreated unstable pelvic fracture model. Samples were loaded statically with 2-mm/min loading rate in single leg standing position. Maximum load was 2.3 kN. When loading the samples, photographs were taken continuously. Stiffness values were calculated from the load displacement curves. Some reference parameters were described and were measured from unloaded and 2.3-kN-loaded photographs of the test. The mean stiffness values were 491.14 ± 52.22, 478.55 ± 41.44, and 470.25 ± 44.51 N/mm for anterior pelvic bridge plating group, supraacetabular external fixator group, and Control group, respectively. According to the measured parameters from photographs, the mean displacement at the pubic symphysis was 4.7 ± 0.32, 15.8 ± 2.01, and 18.2 ± 0.47 mm for anterior pelvic bridge plating, supraacetabular external fixator, and Control group, respectively. The highest displacement in the pubic symphysis was found in Control group, and minimum displacement was observed in anterior pelvic bridge plating group. When the perpendicular distance between the right and left lower end of ischium was examined, it was observed that displacement was minimum in anterior pelvic bridge plating group compared to other two groups, regarding to the high stability of pubic symphysis. In conclusion, this study revealed

Bypass grafting to the anterior tibial artery.

Science.gov (United States)

Armour, R H

1976-01-01

Four patients with severe ischaemia of a leg due to atherosclerotic occlusion of the tibial and peroneal arteries had reversed long saphenous vein grafts to the patent lower part of the anterior tibial artery. Two of these grafts continue to function 19 and 24 months after operation respectively. One graft failed on the fifth postoperative day and another occluded 4 months after operation. The literature on femorotibial grafting has been reviewed. The early failure rate of distal grafting is higher than in the case of femoropopliteal bypass, but a number of otherwise doomed limbs can be salvaged. Contrary to widely held views, grafting to the anterior tibial artery appears to give results comparable to those obtained when the lower anastomosis is made to the posterior tibial artery.

Cataract Surgery in Anterior Megalophthalmos: A Review

Science.gov (United States)

GALVIS, Virgilio; TELLO, Alejandro; M. RANGEL, Carlos

2015-01-01

Anterior megalophthalmos is characterized by megalocornea associated with a very broad anterior chamber and ciliary ring elongation. It is also called X-linked megalocornea. It is accompanied by early development of cataracts, zonular anomalies, and, rarely, vitreoretinal disorders. Subluxation of a cataract can occur in cataract surgery because of zonular weakness. In addition, in most patients, standard intraocular lens (IOL) decentration is a risk because of the enlarged sulcus and capsular bag. These unique circumstances make cataract surgery challenging. To date, several approaches have been developed. Implantation of a retropupillary iris-claw aphakic intraocular lens may be a good option because it is easier than suturing the IOL and can have better and more stable anatomic and visual outcomes, compared to other techniques. PMID:27350950

[Benign paroxysmal positional vertigo of the anterior semicircular canal: clinical aspects and treatment].

Science.gov (United States)

Lorin, P

2005-01-01

To describe the videonystagmographic characteristics and the treatment of the patients reached with a canalolithiasis or a cupulolithiasis of the anterior semicircular canal. Retrospective study concerning patients treated for a Benign Paroxysmal Positional Vertigo (BPPV) of the anterior semicircular canal. Each patient after analysis under videonystagmoscopy (VNS) and under videonystagmography (VNG) was treated by maneuvers. On 462 observations of typical BPPV 6 cases of VPPB of the anterior semicircular canal were treated concerning 5 patients (1.3%). The BPPV of the anterior semicircular canal are rare. We modified our method of diagnosis, and our therapeutic techniques could be validated with the help of the two-dimensional videonystagmography.

Myocardial Bridges and their Relationship to the Anterior Interventricular Branch of the Left Coronary Artery

Directory of Open Access Journals (Sweden)

Lima Vanildo Júnior de Melo

2002-01-01

Full Text Available OBJECTIVE: To analyze the relationship between myocardial bridges and the anterior interventricular branch (anterior descending of the left coronary artery. METHODS: The study was carried out with postmortem material, and methods of dissection and observation were used. We assessed the perimeter of the anterior interventricular branch of the left coronary artery using a pachymeter, calculated its proximal and distal diameters in relation to the myocardial bridge, and also its diameter under the myocardial bridge in 30 hearts. We also observed the position of the myocardial bridge in relation to the origin of the anterior interventricular branch. RESULTS: The diameters of the anterior interventricular branch were as follows: the mean proximal diameter was 2.76±0.76 mm; the mean diameter under the myocardial bridge was 2.08±0.54 mm; and the mean distal diameter was 1.98±0.59 mm. In 33.33% (10/30 of the cases, the diameter of the anterior interventricular branch under the myocardial bridge was lower than the diameter of the anterior interventricular branch distal to the myocardial bridge. In 3.33% (1/30 of the cases, an atherosclerotic plaque was found in the segment under the myocardial bridge. The myocardial bridge was located in the middle third of the anterior interventricular branch in 86.66% (26/30 of the cases. CONCLUSION: Myocardial bridges are more frequently found in the middle third of the anterior interventricular branch of the left coronary artery. The diameter of the anterior interventricular branch of the left coronary artery under the myocardial bridge may be smaller than after the bridge. Myocardial bridges may not provide protection against the formation of atherosclerotic plaque inside the anterior interventricular branch of the left coronary artery.

Encapsulación de moléculas pequeñas mediante la precipitación salina de poliuretanos catioméricos

OpenAIRE

Fernández d’Arlas, Borja; Corcuera, María Ángeles; Eceiza, Arantxa

2015-01-01

En este trabajo se estudia un copolímero de poliuretano catiomérico (PU) con alta proporción de uretano como agente encapsulante de fármacos modelos (FM) mediante la encapsulación inducida por precipitación salina del PU y FM a pH < pI del PU. Mediante espectroscopia UV-Vis se ha estimado el porcentaje de encapsulación de varios FMs proponiéndose un modelo semi-empírico para determinar la distribución observada en las eficiencias de encapsulación, E, en función de su volumen molar...

Caracterización clínica e imagenológica de la hernia discal mediante resonancia magnética Clinical and imaging characterization of discal hernia by means of magnetic resonance

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Yoandra Aroche Lafargue

2012-08-01

Full Text Available Se realizó un estudio descriptivo y transversal de 635 pacientes con hernia discal atendidos en el Hospital General Docente "Dr. Juan Bruno Zayas Alfonso" de Santiago de Cuba, desde diciembre del 2009 hasta igual mes del 2010, para determinar las características clínicas e imagenológicas de esta afección mediante resonancia magnética. En la casuística primaron el grupo etario de 30 a 49 años, el sexo masculino, la obesidad como principal factor de riesgo en las mujeres y la carga física excesiva en los hombres, así como el dolor, la localización lumbar y las hernias posteriores centrolaterales y laterales derechas. Se encontró que las protrusiones focales y difusas resultaron ser las más comunes, asociadas a edema óseo en las placas terminales, que la compresión medular y las mielopatías secundarias fueron provocadas por protrusiones focales cervicales y que la estenosis del canal se presentó mayoritariamente en el segmento lumbar.A descriptive and cross-sectional study of 635 patients with discal hernia assisted in "Dr. Juan Bruno Zayas Alfonso" Teaching General Hospital in Santiago de Cuba was carried out from December, 2009 to the same month of 2010, to determine the clinical and imaging characteristics of this disorder by means of magnetic resonance. The age group from 30 to 49 years, male sex, obesity as the main risk factor in the women and the excessive physical load in the men prevailed in the case material, as well as the pain, the lumbar localization and the right posterior centro-lateral and lateral hernias. It was found that the focal and diffuse protrusions turned out to be more common, associated with bony edema in the terminal plates, that the medullary compression and the secondary myelopathies were caused by cervical focal protrusions and the stenosis of the channel was mainly presented in the lumbar segment.

Anterior chamber angle imaging with swept-source optical coherence tomography: measuring peripheral anterior synechia in glaucoma.

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Lai, Isabel; Mak, Heather; Lai, Gilda; Yu, Marco; Lam, Dennis S C; Leung, Christopher K S

2013-06-01

To investigate the use of swept-source optical coherence tomography (OCT) for measuring the area and degree of peripheral anterior synechia (PAS) involvement in patients with angle-closure glaucoma. Cross-sectional study. Twenty-three eyes with PAS (detected by indentation gonioscopy) from 20 patients with angle-closure glaucoma (20 eyes had primary angle-closure glaucoma and 3 eyes had angle-closure glaucoma secondary to chronic anterior uveitis [n = 2] and Axenfeld-Rieger syndrome [n = 1]). The anterior chamber angles were evaluated with indentation gonioscopy and imaged by swept-source OCT (Casia OCT, Tomey, Nagoya, Japan) in room light and in the dark using the "angle analysis" protocol, which was composed of 128 radial B-scans each with 512 A-scans (16-mm scan length). The area and degree of PAS involvement were measured in each eye after manual detection of the scleral spur and the anterior irido-angle adhesion by 2 masked observers. The interobserver variability of the PAS measurements was calculated. The agreement of PAS assessment by gonioscopy and OCT, the area and the degree of PAS involvement, and the intraclass correlation coefficient (ICC) of interobserver PAS measurements. The area of PAS (mean ± standard deviation) was 20.8 ± 16.9 mm(2) (range, 3.9-74.9 mm(2)), and the degree of PAS involvement was 186.5 ± 79.9 degrees (range, 42-314 degrees). There was no difference in the area of PAS (P = 0.90) and the degree of PAS involvement (P = 0.95) between images obtained in room light and in the dark. The interobserver ICCs were 0.99 (95% confidence interval [CI], 0.98-1.00) for the area of PAS and 0.99 (95% CI, 0.97-1.00) for the degree of PAS involvement. There was good agreement of PAS assessment between gonioscopy and OCT images (kappa = 0.79; 95% CI, 0.67-0.91). Swept-source OCT allows visualization and reproducible measurements of the area and degree of PAS involvement, providing a new paradigm for evaluation of PAS progression and risk assessment

Perawatan gigi impaksi anterior rahang atas pada remaja (The treatment of maxillary anterior impacted teeth in adolescent

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Herdi Eko Pranjoto

2005-09-01

Full Text Available The incidence of impacted tooth in adolescent is usually found by oral surgeon or orthodontist during their sequence of treatments. The maxillary anterior teeth, especially canine and third lower molar are the most common impacted teeth found as the result of their eruption disturbances. The surgical technique principle is to facilitate the impacted tooth, so that it can be erupted by creating a window and take the bone obstructed surrounding the tooth crown surgically and afterward it is orthodontically tracted. In a case of third molar germ which is predicted to be impacted in mesio version position, germinectomy is preferred to prevent anterior mechanical drive during its development which may cause mal-alignment of the mandibular teeth. Germinectomy which is usually easier than odontectomy, the germ position, and less complication after the surgical intervention are three factors that should be considered in making decision.

Evaluation of anterior urethral stricture using thick slab SSFSE MR urethrography

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Park, Byung Kwan; Kim, Chan Kyo (Dept. of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan Univ. School of Medicine, Seoul (Korea)), e-mail: rapark@skku.edu; Lee, Sung Won (Dept. of Urology, Samsung Medical Center, Sungkyunkwan Univ. School of Medicine, Seoul (Korea))

2010-12-15

Background: Magnetic resonance urethrography (MRU) can be used for depicting not only anterior urethral strictures but also periurethral anatomy in order to produce a management plan. Purpose: To determine if thick slab single-shot fast spin echo (SSFSE) MRU is useful for evaluating anterior urethral stricture compared to fast recovery fast spin echo (FRFSE) MRU. Material and Methods: Ten patients with benign anterior urethral stricture underwent both thick slab SSFSE MRU and FRFSE MRU using sterile jelly for urethral distension before retrograde urethrography. The glans penis was tied at the time of MRU. The two types of MR image were compared regarding stricture length, scan time, and image quality. We also determined whether or not both of the two MR sequences could display an entire anterior urethra on one image. Results: The stricture length on thick slab SSFSE and FRFSE MRU ranged from 4.0 to 71.3 mm (36.4 {+-} 21.8 mm) and from 4.0 to 67.5 mm (35.7 {+-} 20.8 mm), respectively (P > 0.05). The mean scan time for thick slab SSFSE and FRFSE sequences was 2 s and 194 s, respectively (P < 0.05). However, regarding image quality, thick slab SSFSE MRU was inferior to FRFSE MRU (P < 0.05). All the thick slab SSFSE MRU displayed the entire anterior urethra on one image, while only five FRFSE MRU did so (P < 0.05). Conclusion: Thick slab SSFSE MRU can provide a concordant stricture length when compared to the FRFSE MRU and imaging of the entire length of the anterior urethral stricture with subjective reduced image quality and scan time.

Evaluation of anterior urethral stricture using thick slab SSFSE MR urethrography

International Nuclear Information System (INIS)

Park, Byung Kwan; Kim, Chan Kyo; Lee, Sung Won

2010-01-01

Background: Magnetic resonance urethrography (MRU) can be used for depicting not only anterior urethral strictures but also periurethral anatomy in order to produce a management plan. Purpose: To determine if thick slab single-shot fast spin echo (SSFSE) MRU is useful for evaluating anterior urethral stricture compared to fast recovery fast spin echo (FRFSE) MRU. Material and Methods: Ten patients with benign anterior urethral stricture underwent both thick slab SSFSE MRU and FRFSE MRU using sterile jelly for urethral distension before retrograde urethrography. The glans penis was tied at the time of MRU. The two types of MR image were compared regarding stricture length, scan time, and image quality. We also determined whether or not both of the two MR sequences could display an entire anterior urethra on one image. Results: The stricture length on thick slab SSFSE and FRFSE MRU ranged from 4.0 to 71.3 mm (36.4 21.8 mm) and from 4.0 to 67.5 mm (35.7 20.8 mm), respectively (P > 0.05). The mean scan time for thick slab SSFSE and FRFSE sequences was 2 s and 194 s, respectively (P < 0.05). However, regarding image quality, thick slab SSFSE MRU was inferior to FRFSE MRU (P < 0.05). All the thick slab SSFSE MRU displayed the entire anterior urethra on one image, while only five FRFSE MRU did so (P < 0.05). Conclusion: Thick slab SSFSE MRU can provide a concordant stricture length when compared to the FRFSE MRU and imaging of the entire length of the anterior urethral stricture with subjective reduced image quality and scan time.

Effect of the Mitral Valve's Anterior Leaflet on Axisymmetry of Transmitral Vortex Ring.

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Falahatpisheh, Ahmad; Pahlevan, Niema M; Kheradvar, Arash

2015-10-01

The shape and formation of transmitral vortex ring are shown to be associated with diastolic function of the left ventricle (LV). Transmitral vortex ring is a flow feature that is observed to be non-axisymmetric in a healthy heart and its inherent asymmetry in the LV assists in efficient ejection of the blood during systole. This study is a first step towards understanding the effects of the mitral valve's anterior leaflet on transmitral flow. We experimentally study a single-leaflet model of the mitral valve to investigate the effect of the anterior leaflet on the axisymmetry of the generated vortex ring based on the three-dimensional data acquired using defocusing digital particle image velocimetry. Vortex rings form downstream of a D-shaped orifice in presence or absence of the anterior leaflet in various physiological stroke ratios. The results of the statistical analysis indicate that the formed vortex ring downstream of a D-shaped orifice is markedly non-axisymmetric, and presence of the anterior leaflet improves the ring's axisymmetry. This study suggests that the improvement of axisymmetry in presence of the anterior leaflet might be due to coupled dynamic interaction between rolling-up of the shear layer at the edges of the D-shaped orifice and the borders of the anterior leaflet. This interaction can reduce the non-uniformity in vorticity generation, which results in more axisymmetric behavior compared to the D-shaped orifice without the anterior leaflet.

Laparoendoscopic single-site Heller myotomy with anterior fundoplication for achalasia.

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Barry, Linda; Ross, Sharona; Dahal, Sujat; Morton, Connor; Okpaleke, Chinyere; Rosas, Melissa; Rosemurgy, Alexander S

2011-06-01

Laparoendoscopic single-site (LESS) surgery is beginning to include advanced laparoscopic operations such as Heller myotomy with anterior fundoplication. However, the efficacy of LESS Heller myotomy has not been established. This study aimed to evaluate the authors' initial experience with LESS Heller myotomy for achalasia. Transumbilical LESS Heller myotomy with concomitant anterior fundoplication for achalasia was undertaken for 66 patients after October 2007. Outcomes including operative time, complications, and length of hospital stay were recorded and compared with those for an earlier contiguous group of 66 consecutive patients undergoing conventional multi-incision laparoscopic Heller myotomy with anterior fundoplication. Symptoms before and after myotomy were scored by the patients using a Likert scale ranging from 0 (never/not severe) to 10 (always/very severe). Data were analyzed using the Mann-Whitney U test, the Wilcoxon matched-pairs test, and Fisher's exact test where appropriate. Patients undergoing LESS Heller myotomy were similar to those undergoing conventional laparoscopic Heller myotomy in gender, age, body mass index (BMI), blood loss, and length of hospital stay. However, the patients undergoing LESS Heller myotomies had operations of significantly longer duration (median, 117 vs. 93 min with the conventional laparoscopic approach) (pHeller myotomy, additional ports/incisions were required. No patients were converted to "open" operations, and no patients had procedure-specific complications. Symptom reduction was dramatic and satisfying after both LESS and conventional laparoscopic myotomy with fundoplication. The symptom reduction was similar with the two procedures. The LESS approach left no apparent umbilical scar. Heller myotomy with anterior fundoplication effectively treats achalasia. The findings showed LESS Heller myotomy with anterior fundoplication to be feasible, safe, and efficacious. Although the LESS approach increases operative

The significance of biometric parameters in determining anterior teeth width

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Strajnić Ljiljana

2013-01-01

Full Text Available Background/Aim. An important element of prosthetic treatment of edentulous patients is selecting the size of anterior artificial teeth that will restore the natural harmony of one’s dentolabial structure as well as the whole face. The main objective of this study was to determine the correlation between the inner canthal distance (ICD and interalar width (IAW on one side and the width of both central incisors (CIW, the width of central and lateral incisors (CLIW, the width of anterior teeth (ATW, the width between the canine cusps (CCW, which may be useful in clinical practice. Methods. A total of 89 subjects comprising 23 male and 66 female were studied. Their age ranged from 19 to 34 years with the mean of 25 years. Only the subjects with the preserved natural dentition were included in the sample. All facial and intraoral tooth measurements were made with a Boley Gauge (Buffalo Dental Manufacturing Co., Brooklyn NY, USA having a resolution of 0.1mm. Results. A moderate correlation was established between the interalar width and combined width of anterior teeth and canine cusp width (r = 0.439, r = 0.374. A low correlation was established between the inner canthal distance and the width of anterior teeth and canine cusp width (r = 0.335, r = 0.303. The differences between the two genders were highly significant for all the parameters (p < 0.01. The measured facial distances and width of anterior teeth were higher in men than in women. Conclusion. The results of this study suggest that the examined interalar width and inner canthal distance cannot be considered reliable guidelines in the selection of artificial upper anterior teeth. However, they may be used as a useful additional factor combined with other methods for objective tooth selection. The final decision should be made while working on dentures fitting models with the patient’s consent.

Aneurismas del complejo arteria cerebral anterior / arteria comunicante anterior: Resultados del tratamiento quirúrgico Aneurysms of the anterior cerebral artery-anterior communicating artery complex: Results of the surgical treatment

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Justo L González González

2006-03-01

Full Text Available Los aneurismas del complejo arteria cerebral anterior-arteria comunicante anterior figuran entre los más frecuentes de localización intracraneal y, debido a su variabilidad anatómica y características hemodinámicas, constituyen un reto especial para cualquier esfuerzo terapéutico. Con el objetivo de caracterizarlos y evaluar los resultados del tratamiento quirúrgico de estas lesiones, se estudian los pacientes operados en el Servicio de Neurocirugía del Hospital Clinicoquirúrgico «Hermanos Ameijeiras», entre enero de 1983 y agosto de 1998. Se observó que el 71,1 % de la muestra egresó en excelente estado; el 13,44 %, con secuelas mínimas; el 3,48 %, con secuelas graves y que la mortalidad fue del 11,53 %. Se concluye que estos aneurismas son más frecuentes en el sexo masculino, en la cuarta y quinta décadas de la vida (media de 39,9 años y que el tamaño crítico de ruptura se ubica mayoritariamente entre 6 mm y 11 mm. De igual forma se observó que la edad, el tamaño sacular, el vasoespasmo y la ruptura transoperatoria influyen sobre los resultados y que la influencia de estas dos últimas complicaciones es muy fuerte. El infarto cerebral isquémico fue la causa de muerte más frecuente

Anastomose mecanica em reto extraperitoneal : (duas tecnicas de reconstrução) : estudo experimental comparativo em caes

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Fernando Cordeiro

1995-01-01

Resumo: Os problemas resultantes das anastomoses no reto abaixo da reflexão peritoneal continuam sendo tema de discussões. Com o desenvolvimento de novas técnicas pode-se estender a ressecção anterior aos segmentos retais mais baixos com preservação do mecanismo esfincteriano, porém a segurança destes procedimentos está por ser estabelecida. Este estudo comparativo randomizado entre duas técnicas de anastomose mecânica no reto de cães, abaixo da reflexão peritoneal, permitiu a elaboração de...

Activation of anterior insula during self-reflection.

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Modinos, Gemma; Ormel, Johan; Aleman, André

2009-01-01

Functional neuroimaging studies have suggested activation of midline frontoparietal brain regions to be at the core of self-related processes. However, although some studies reported involvement of the insula, little attention has been paid to this region as forming part of the "self"-network. Using functional magnetic resonance imaging (fMRI), we aimed at replicating and extending previous studies by scanning subjects whilst reflecting upon their own personal qualities as compared to those of an acquaintance. A third condition with statements about general knowledge was used to control for attention, semantic processing and decision making processes. The results showed a significant effect of task in brain activity, consistent with previous findings, by which both person conditions recruited a common set of medial prefrontal and posterior regions, yet significant differences between self and other were found in the medial prefrontal cortex (MPFC) and the anterior cingulate cortex (ACC). Notably, significant neural activation in the left anterior insula was observed as uniquely associated with self-reflection. The results provide further evidence for the specific recruitment of anterior MPFC and ACC regions for self-related processing, and highlight a role for the insula in self-reflection. As the insula is closely connected with ascending internal body signals, this may indicate that the accumulation of changes in affective states that might be implied in self-processing may contribute to our sense of self.

Ahorro energético mediante estrategias de iluminación natural optimizadas

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Puigdomènech Franquesa, Joan

1986-04-01

Full Text Available Electrical charges in buildings and specially in those of commercial use, can be diminished by means of natural lighting strategies. Taking the climate features of our country into consideration, it is necessary to prevent the inconveniences caused by an en erg y excess in summer, so solar Controls are needed. The only practical way to achieve the suitable balance between thermal and light needs, so as to get a monthly or annual energetic balance optimization, is to operate with the computer. A programme with such characteristics is described here. Its application gives important sarings in non renouvable energy savings.Mediante estrategias de iluminación natural es posible disminuir las cargas eléctricas de los edificios y en especial los de uso comercial. Dadas las características climáticas de nuestro país es necesario prever los inconvenientes de un exceso de energía en verano, para lo cual es preciso disponer de controles solares. Encontrar el correcto equilibrio entre las necesidades térmicas y lumínicas en base a la optimización del balance energético mensual o anual es únicamente factible mediante el uso del ordenador. Un programa que responde a estas características es descrito en el presente trabajo, obteniéndose con su aplicación importantes ahorros en el consumo de energías no renovables.

Successful anterior capsulotomy in comorbid anorexia nervosa and obsessive-compulsive disorder: case report.

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Barbier, Johan; Gabriëls, Loes; van Laere, Koen; Nuttin, Bart

2011-09-01

State-of-the-art treatment of anorexia nervosa (AN) and obsessive-compulsive disorder (OCD) often proves ineffective. Both disorders have common features, and anterior capsulotomy is a last-resort treatment for OCD. We document the effect of bilateral anterior capsulotomy in a patient with comorbid AN and OCD. A 38-year-old woman with life-threatening, chronic, treatment-refractory AN and OCD underwent anterior capsulotomy. Psychiatric and neuropsychological evaluations at baseline and at follow-up document the severity and progress of the case. Bilateral anterior capsulotomy resulted in normalization of eating pattern and weight and a significant decrease of food-related and overall obsessive-compulsive symptoms. Psychiatric evaluations and exposure to food cues confirmed the clinical improvement that was evident immediately after surgery and sustained at 3-month follow-up. This case report suggests that bilateral anterior capsulotomy can be a therapeutic option for patients with comorbid AN and OCD. However, a well-controlled study is warranted.

Biomicroscopia ultrasónica en pacientes operados de catarata traumática Ultrasound biomicroscopy used in patients operated from trauma cataract

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Yanay Ramos Pereira

2009-06-01

Full Text Available OBJETIVO: Caracterizar a los pacientes operados de catarata traumática mediante su evaluación con biomicroscopia ultrasónica. MÉTODOS: Se realizó un estudio observacional, descriptivo, longitudinal y prospectivo en el servicio de microcirugía del Instituto Cubano de Oftalmología "Ramón Pando Ferrer", en el período comprendido entre enero de 2006 a enero de 2007. La muestra la conformaron 72 pacientes quienes recibieron tratamiento quirúrgico por diferentes técnicas con implante de lente intraocular. RESULTADOS: El 72,2 % fueron del sexo masculino y prevaleció el grupo de edad entre 40 y 49 años. La subluxación del cristalino estuvo presente en el 16,7 %. El 68,1 % presentó una amplitud de la cámara anterior normal independientemente del tipo de trauma. Los hallazgos más frecuentes por Biomicroscopía Ultrasónica fueron: el leucoma corneal, la desinserción zonular y la ruptura de cápsula posterior. Presentaron el mayor porcentaje de buena agudeza visual con corrección posoperatoria y sin ella los pacientes con lente intraocular en saco, localización más frecuente por biomicroscopia ultrasónica. Predominó la ruptura de las fibras zonulares por temporal. CONCLUSIONES: La biomicroscopia ultrasónica (BMU es un medio diagnóstico de gran importancia para la detección de alteraciones del segmento anterior en pacientes operados de catarata traumática.OBJECTIVE: To characterize the patients operated from trauma cataract through their evaluation with ultrasound biomicroscopy. METHODS: A longitudinal, prospective, observational and descriptive study was conducted in the Microsurgery Service of "Ramón Pando Ferrer" Cuban Institute of Ophthalmology from January 2006 to January 2007. The sample was made up of 72 patients who had been surgically treated using different techniques for intraocular lens implant. RESULTS: Male sex was 72.2 % and the prevailing age group was 40 to 49 years. Crystalline subluxation was found in 16.7 % of

Open Approaches to the Anterior Skull Base in Children: Review of the Literature.

Science.gov (United States)

Wasserzug, Oshri; DeRowe, Ari; Ringel, Barak; Fishman, Gadi; Fliss, Dan M

2018-02-01

Introduction  Skull base lesions in children and adolescents are rare, and comprise only 5.6% of all skull base surgery. Anterior skull base lesions dominate, averaging slightly more than 50% of the cases. Until recently, surgery of the anterior skull base was dominated by open procedures and endoscopic skull base surgery was reserved for benign pathologies. Endoscopic skull base surgery is gradually gaining popularity. In spite of that, open skull base surgery is still considered the "gold standard" for the treatment of anterior skull base lesions, and it is the preferred approach in selected cases. Objective  This article reviews current concepts and open approaches to the anterior skull base in children in the era of endoscopic surgery. Materials and Methods  Comprehensive literature review. Results  Extensive intracranial-intradural invasion, extensive orbital invasion, encasement of the optic nerve or the internal carotid artery, lateral supraorbital dural involvement and involvement of the anterior table of the frontal sinus or lateral portion of the frontal sinus precludes endoscopic surgery, and mandates open skull base surgery. The open approaches which are used most frequently for surgical resection of anterior skull base tumors are the transfacial/transmaxillary, subcranial, and subfrontal approaches. Reconstruction of anterior skull base defects is discussed in a separate article in this supplement. Discussion  Although endoscopic skull base surgery in children is gaining popularity in developed countries, in many cases open surgery is still required. In addition, in developing countries, which accounts for more than 80% of the world's population, limited access to expensive equipment precludes the use of endoscopic surgery. Several open surgical approaches are still employed to resect anterior skull base lesions in the pediatric population. With this large armamentarium of surgical approaches, tailoring the most suitable approach to a

Ateliê de vídeo e cultura juvenil: um estudo de caso sobre aprendizagem e socialização de jovens urbanos de segmentos populares através das tecnologias do vídeo digital

OpenAIRE

Luiz Andre Carrieri Rosatelli

2007-01-01

O objetivo deste estudo é investigar como as tecnologias do vídeo podem ser mediadoras de novas formas de aprendizagem e socialização. A pergunta central que procura responder é como e por que razões o ateliê de vídeo, utilizando-se de estratégias de criação e produção, contribui para a formação de jovens de segmentos populares, moradores de bairros periféricos da Grande São Paulo. Neste processo de investigação procuramos: a) verificar a importância do audiovisual no contexto sócio-cultural ...

Maxillary anterior segmental distraction osteogenesis with 2 different types of distractors.

Science.gov (United States)

Choi, Hye-Young; Hwang, Chung-Ju; Kim, Hee-Jin; Yu, Hyung-Seog; Cha, Jung-Yul

2012-05-01

Maxillary anterior segmental distraction osteogenesis (DO) has been the alternative treatment option for patients with midfacial retrusion. To investigate a potentially more effective maxillary anterior segmental DO, a newly designed intraoral alveolar distractor was applied. The objectives of this study were to investigate the skeletal and dental effects of maxillary anterior segmental DO and the relapse pattern. The study was carried out for 8 patients with unilateral cleft lip and palate (mean age, 16 years 7 months). Four patients were treated with an intraoral appliance (IA), and the remaining with a rigid external distractor (RED). Dental and skeletal measurements were obtained for both groups. These measurements were compared for different time points including pre-DO (T1), post-DO (T2), postconsolidation (T3), and 1-year follow-up (T4). Horizontal change of A point was significantly larger after distraction period (T2) in the RED group (mean, 11.0 mm; median, 10.1 mm) than in the IA group (mean, 6.6 mm; median, 7.4 mm) (P distraction, showing a significant difference between groups (P Maxillary anterior segmental DO is effective for the treatment of patients with cleft lip and palate. The alveolar space is regained, and the facial profile is improved without velopharyngeal problems. Superior results are obtained using the RED appliance for maxillary anterior segmental DO relative to the use of the intraoral distractor appliance.

Kinematic analysis of anterior cruciate ligament reconstruction in total knee arthroplasty

Science.gov (United States)

Liu, Hua-Wei; Ni, Ming; Zhang, Guo-Qiang; Li, Xiang; Chen, Hui; Zhang, Qiang; Chai, Wei; Zhou, Yong-Gang; Chen, Ji-Ying; Liu, Yu-Liang; Cheng, Cheng-Kung; Wang, Yan

2016-01-01

Background: This study aims to retain normal knee kinematics after knee replacement surgeries by reconstructing anterior cruciate ligament during total knee arthroplasty. Method: We use computational simulation tools to establish four dynamic knee models, including normal knee model, posterior cruciate ligament retaining knee model, posterior cruciate ligament substituting knee model, and anterior cruciate ligament reconstructing knee model. Our proposed method utilizes magnetic resonance images to reconstruct solid bones and attachments of ligaments, and assemble femoral and tibial components according representative literatures and operational specifications. Dynamic data of axial tibial rotation and femoral translation from full-extension to 135 were measured for analyzing the motion of knee models. Findings: The computational simulation results show that comparing with the posterior cruciate ligament retained knee model and the posterior cruciate ligament substituted knee model, reconstructing anterior cruciate ligament improves the posterior movement of the lateral condyle, medial condyle and tibial internal rotation through a full range of flexion. The maximum posterior translations of the lateral condyle, medial condyle and tibial internal rotation of the anterior cruciate ligament reconstructed knee are 15.3 mm, 4.6 mm and 20.6 at 135 of flexion. Interpretation: Reconstructing anterior cruciate ligament in total knee arthroplasty has been approved to be an more efficient way of maintaining normal knee kinematics comparing to posterior cruciate ligament retained and posterior cruciate ligament substituted total knee arthroplasty. PMID:27347334

Mentalidade Global e RH Internacional em Empresas Multinacionais Brasileiras do Segmento de Construção Pesada.

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Arnaldo José França Mazzei Nogueira

2013-12-01

Full Text Available O objetivo central deste trabalho foi pesquisar a mentalidade global e as políticas de recursos humanos internacionais em duas empresas brasileiras do segmento da construção pesada. As perguntas que orientaram a pesquisa foram: o que determina a mentalidade global e como sustentá-la? As multinacionais brasileiras reconhecem a mentalidade global como fator estratégico para o negócio e adotam políticas de recursos humanos para desenvolvê-la? Qual é a visão dos gestores sobre estes processos? O artigo examina os referenciais teóricos mais importantes sobre a mentalidade global e os processos de recursos humanos internacionais; a seguir, são explicitados os procedimentos metodológicos da pesquisa, que incide sobre duas empresas, selecionadas a partir do ranking das transnacionais brasileiras realizado pela Fundação Dom Cabral. Os resultados do estudo revelaram que, apesar de as empresas em foco possuírem grande experiência de atuação global, não adotavam políticas de recursos humanos internacionais consistentes que facilitassem o desenvolvimento e a manutenção da mentalidade global de seus gestores. A análise comparativa dos depoimentos apontou que os gestores das duas empresas posicionavam-se em estágios diferentes em termos de mentalidade global: na Camargo Corrêa, a orientação etnocêntrica; na Norberto Odebrecht, a orientação regiocêntrica ou policêntrica. Embora as conclusões deste trabalho não possam ser generalizadas, por se tratar de estudos de casos, suas maiores contribuições são serem derivadas de um estudo original da mentalidade global dos gestores brasileiros e a descoberta do papel ainda incipiente das políticas de recursos humanos internacionais no desenvolvimento dessa mentalidade global.

Role of estrogens in anterior pituitary gland remodeling during the estrous cycle.

Science.gov (United States)

Zárate, S; Zaldivar, V; Jaita, G; Magri, L; Radl, D; Pisera, D; Seilicovich, A

2010-01-01

In this review, we analyze the action of estrogens leading to the remodeling of the anterior pituitary gland, especially during the estrous cycle. Proliferation and death of anterior pituitary cells and especially lactotropes is regulated by estrogens, which act by sensitizing these cells to both mitotic and apoptotic stimuli such as TNF-alpha, FasL and dopamine. During the estrous cycle, the changing pattern of gonadal steroids is thought to modulate both cell proliferation and death in the anterior pituitary gland, estrogens being key players in cell turnover. The mechanisms involved in estrogen-modulated cell renewal in the anterior pituitary gland during the estrous cycle could include an increase in the expression of proapoptotic cytokines as well as the increase in the Bax/Bcl-2 ratio at proestrus, when estrogen levels are highest and a peak of apoptosis, in particular of lactotropes, is evident in this gland. Estrogens exert rapid antimitogenic and proapoptotic actions in the anterior pituitary through membrane-associated estrogen receptors, a mechanism that might also be involved in remodeling of this gland during the estrous cycle. Copyright (c) 2010 S. Karger AG, Basel.

The Anterior Thalamus Provides A Subcortical Circuit Supporting Memory And Spatial Navigation

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Shane M O‘Mara

2013-08-01

Full Text Available The anterior thalamic nuclei, a central component of Papez’ circuit, are generally assumed to be key constituents of the neural circuits responsible for certain categories of learning and memory. Supporting evidence for this contention is that damage to either of two brain regions, the medial temporal lobe and the medial diencephalon, is most consistently associated with anterograde amnesia. Within these respective regions, the hippocampal formation and the anterior thalamic nuclei (anteromedial, anteroventral, anterodorsal are the particular structures of interest. The extensive direct and indirect hippocampal-anterior thalamic interconnections and the presence of theta-modulated cells in both sites further support the hypothesis that these structures constitute a neuronal network crucial for memory and cognition. The major tool in understanding how the brain processes information is the analysis of neuronal output at each hierarchical level along the pathway of signal propagation coupled with neuroanatomical studies. Here, we discuss the electrophysiological properties of cells in the anterior thalamic nuclei with an emphasis on their role in spatial navigation. In addition, we describe neuroanatomical and functional relationships between the anterior thalamic nuclei and hippocampal formation.

Usurering af osteosyntesemateriale gennem øsofagus efter anterior cervikalkirurgi

DEFF Research Database (Denmark)

Wiis, Julie Therese; Nittby, Henrietta Carolina; Lauritsen, Anne Oberg

2014-01-01

The rare, potentially life-threatening complication to anterior cervical surgery, oesophageal perforation, occurs after surgical trauma or due to erosion by migrating hardware. Symptoms are hoarseness, dysphagia, neck/throat pain, subcutaneous emphysema and fever. Imaging and endoscopic diagnosis...... can give false negative results. We present a case of a 74-year-old male, who was readmitted with sepsis and abscess in the operation area three weeks after anterior cervical surgery. Veillonella parvula was found in the abscess material and computed tomography confirmed the diagnosis of oesophageal...

Cajas intersomáticas lumbares: ¿medios de fusión o sólo espaciadores? [Lumbar interbody cages: Fusing means or only spacers?

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Diego Nicolas Flores Kanter

2013-06-01

Full Text Available Introducción La fusión quirúrgica de la columna lumbar es un método muy utilizado para el tratamiento de la inestabilidad segmentaria lumbar dolorosa. En la actualidad, las dos técnicas de fusión instrumentada más utilizadas son la fusión posterolateral con tornillos pediculares y la fusión circunferencial mediante asociación de caja intersomática. Si bien hay evidencia de que la asociación de dispositivos intersomáticos aumenta la tasa de fusión, la mayoría de los estudios no discriminan si esta se produce solo de forma posterolateral o si se asocia una fusión anterior. El objetivo de este trabajo es determinar si existe fusión ósea real a nivel de las cajas intersomáticas o si estas actúan solo como espaciadores. Material y métodos Se analizaron 28 pacientes con patología de la columna lumbar sometidos a artrodesis lumbar circunferencial en un solo nivel entre mayo de 2007 y enero de 2012, mediante tomografía computarizada posquirúrgica para valorar la presencia o no de artrodesis anterior. Se efectuó un estudio de valor terapéutico, descriptivo, de observación (nivel de evidencia IV; mediante evaluación estadística se realizó un análisis de frecuencias para describir la proporción de casos con fusión anterior. Resultados Se detectó una tasa de fusión del 92,86% y falta de fusión radiológica anterior en el 7,14% de los pacientes. Conclusiones Hay una alta tasa de fusión anterior a nivel de las cajas intersomáticas; de este modo, se demuestra que dichos dispositivos actúan como medios de fusión y no solo como espaciadores.

Insuficiência tricúspide pós trauma associada a agnesia de músculo papilar anterior Post-traumatic tricuspid insufficiency associated with agenesis of the anterior papillary muscle

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Ronaldo Ducceschi FONTES

2000-09-01

Full Text Available Relatamos o caso de paciente do sexo masculino com 36 anos de idade com sinais e sintomas de insuficiência cardíaca direita. A história revelou trauma torácico há aproximadamente cinco anos. Submetido a operação para tratamento de insuficiência tricúspide, notou-se ausência do músculo papilar anterior da valva tricúspide, fenda na cúspide anterior e dilatação do anel tricuspídeo. Foi realizada sutura da fenda localizada na cúspide anterior e feita sua sustentação utilizando-se tira de pericárdio bovino fixada na face atrial e base do músculo papilar posterior. A operação foi completada com anuloplastia de Revuelta. O paciente obteve nítida melhora dos sintomas no pós-operatório imediato, mantendo-se em classe funcional I (NYHA, após 22 meses de evolução.Tricuspid regurgitation arising from chest trauma five years earlier was successfully corrected by valve reconstruction in a 36 year-old man. During correction a fissure of the anterior leaflet, absence of the anterior papillary muscle, chordae tendineae and tricuspid annulus dilatation were found. Tricuspid valvuloplasty was feasible using an anchored suture of the anterior leaflet fissure, artificial bovine chordae, pericardium implantation and Revuelta ring annuloplasty. There were no complications and no early or late mortality. At 22 months follow-up tricuspid valve function has remained with mild regurgitation. The patient is in good clinical condition.

Control de la mano robot Inmoov-SR mediante casco NeuroSky Mindset

OpenAIRE

Hernández Martínez, Antonio

2017-01-01

En este trabajo el objetivo es conseguir controlar los movimientos de apertura y cierre de la mano robot InMoov-SR conectada al brazo IRB120 de ABB mediante señales EEG, recogidas por medio del casco NeuroSky Mindset. Las señales son recogidas cuando el sujeto está en estado basal y cuando realiza movimiento con su mano y son procesadas con la ayuda de Matlab para de esta manera conseguir establecer las señales de control necesarias para activar la apertura o el cierre de la mano. Final...

Laparoscopic anterior resection and total mesorectal excision for rectal cancer: a prospective nonrandomized study.

Science.gov (United States)

Palanivelu, C; Sendhilkumar, K; Jani, Kalpesh; Rajan, P S; Maheshkumar, G S; Shetty, Roshan; Parthasarthi, R

2007-04-01

The purpose of this study was to present our experience of laparoscopic total mesorectal resection, including ultralow resection and coloanal anastomosis. Between 1993 and 2005, patients fit for general anesthesia, with resectable cancers, and with lower edge of tumor beyond 5 cm of the anal verge were subjected to laparoscopic anterior resection with sphincter preservation. Double stapling technique is used to establish bowel continuity. A total of 170 patients, 88 males and 82 females, were subjected to successful laparoscopic anterior resection, which included high anterior resection (n=90), low anterior resection (n=52), ultralow anterior resection (n=20), and coloanal anastomosis (n=8). The average age of patients was 58.4 years (12-90 years). Mean operating time was 130 min and mean hospital stay was 7 days. The morbidity was 13.5% with nil mortality. With an average follow-up of 49 months (range 9 years to 3 months), 9 patients developed local recurrence and 45 patients developed distant metastasis. In selected cases, laparoscopic anterior resection is possible for all levels of rectal tumors, allowing sphincter preservation and maintaining oncological safety.

Gestión del riesgo en la implementación de la Norma Internacional de Contabilidad 16 Propiedad, Planta & Equipo para entidades del Grupo Uno en Colombia

OpenAIRE

Agredo Sánchez, Natalia Esperanza; Betancourt Ardila, María Alejandra

2016-01-01

La importancia de la implementación de las Normas Internacionales de Información Financiera consiste en actualizar la forma de preparar y divulgar la consolidación de la información financiera mediante el reconocimiento, medición y presentación de los hechos económicos, de manera que esta se pueda interpretar mediante un lenguaje financiero, revelar información fidedigna de las entidades obligadas y generar alianzas comerciales en mercados internacionales.En consideración a lo anterior, se em...

FRANQUIAS COMO APOIO ÀS ESTRATÉGIAS DE MARKETING E DE COMPETITIVIDADE: UM ESTUDO DE CASO NA EMPRESA DUMOND

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Ernani Cesar de Freitas

2011-07-01

Full Text Available Em um sistema de franquias, o Marketing é um instrumento fundamental, pois é necessário utilizar-se de suas estratégias - especialmente estratégias de distribuição - para que o processo de implantação de Franchising seja bem sucedido. Este trabalho, que se propõe a contribuir com o tema “Marketing: um estudo no segmento de Franquias”, busca analisar a adoção de um sistema de franquias pela empresa Dumond, do segmento calçadista, localizada em Sapiranga/RS, sob o âmbito da estratégia de Marketing e de competitividade, assim como os impactos percebidos por seus franqueados. O trabalho desenvolveu-se a partir de pesquisa descritiva e de um estudo de caso. Através da aplicação de entrevista com a empresa franqueadora e de questionários com franqueados da marca Dumond, foi possível verificar as principais vantagens e desvantagens do Franchising para ambas as partes. Os resultados mostram que mediante a adoção do Franchising como estratégia de Marketing de distribuição, a empresa Dumond visa tornar-se mais competitiva no mercado; além disso, os franqueados consideram o Franchising uma alternativa mais vantajosa e segura de se empreender um negócio próprio.

Analysis of maxillary anterior teeth proportion in relationship with lower facial height and malocclusion

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Rajesh Gyawali

2017-07-01

Full Text Available Background & Objectives: Maxillary anterior tooth to tooth proportion has a special value in dental esthetics. This study aimed to assess the apparent proportion of maxillary anteriors and possible association with lower anterior facial height and malocclusion type. Materials & Methods: One-hundred and sixty samples with well aligned maxillary dentition were selected and the lower anterior facial height was measured with digital caliper. Molar relationship was examined and intraoral frontal photograph was taken for digital measurement of tooth proportion. The ratio of maxillary canine to lateral and lateral to central incisors were measured and compared between gender and the sides. These ratios were further compared among various malocclusion type using ANOVA and its association with lower anterior facial height was evaluated with Pearson’s correlation.Results: Most of the samples had Class I molar relationship (70% followed by Class II (23% and Class III (7%. The mean lower anterior facial height was 62.82mm and ratio of maxillary lateral to central incisor and canine to lateral incisor was 0.68 and 0.76 respectively. No statistically significant difference was found when the ratio was compared between the gender and the sides. These ratios were statistically different from the golden ratio and has no significant correlation with lower anterior facial height. These mean ratios were also found similar across the malocclusion type.Conclusion: Ratio of apparent dimension of maxillary canine to lateral incisor and lateral to central incisor was different from the golden ratio and showed no association with lower anterior facial height and malocclusion type.

Anterior Versus Posterolateral Approach for Total Laparoscopic Splenectomy: A Comparative Study

Science.gov (United States)

Ji, Bai; Wang, Yingchao; Zhang, Ping; Wang, Guangyi; Liu, Yahui

2013-01-01

Objective: Although the anterior approach is normally used for elective laparoscopic splenectomy (LS), the posterolateral approach may be superior. We have retrospectively compared the effectiveness and safety of these approaches in patients with non-severe splenomegaly scheduled for elective total LS. Methods: Patients with surgical spleen disorders scheduled for elective LS between March 2005 and June 2011 underwent laparoscopic splenic mobilization via the posterolateral or anterior approach. Main outcome measures included operation time, intraoperative blood loss, frequency of postoperative pancreatic leakage, and length of hospital stay. Results: During the study period, 203 patients underwent LS, 58 (28.6%) via the posterolateral and 145 (71.4%) via the anterior approach. Three patients (1.5%) required conversion to laparotomy due to extensive perisplenic adhesions. The posterolateral approach was associated with significantly shorter operation time (65.0 ± 12.3 min vs. 95.0 ± 21.3 min, P 0.05) Conclusions: The posterolateral approach is more effective and safer than the anterior approach in patients without severe splenomegaly (< 30 cm). PMID:23372427

Evaluation of the Effects of Menstrual Cycle on Anterior Chamber Parameters as Measured with Pentacam

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Arzu Seyhan Karatepe

2013-01-01

Full Text Available Pur po se: To evaluate the effects of endogenous gonadotropic hormones (follicle-stimulating hormone, luteinizing hormone and sex steroids (progesterone, estrogen to anterior segment parameters. Ma te ri al and Met hod: Thirty healthy females who had a menstrual cycle of 28±1 day and with a mean age of 36.5±7.56 (range, 20 – 46 years were included in the study. Starting from the first day of their cycle, Pentacam Scheimpflug camera measurements were performed on the 1st, 3rd, 7th, 12th, 16th, 21st, 26th, and 28th days. The central corneal thickness, anterior chamber depth, anterior segment volume, keratometric values, anterior chamber angle value, and pupilla diameter of both eyes were evaluated. Repeated measures analysis of variance test was used for statistical analysis. Re sults: No difference that reaches statistical significance was found in the means of central corneal thickness, anterior chamber volume, keratometric values, anterior chamber angle, and pupilla diameter between the days. Mean anterior chamber depth measurement of the right eyes on the 1st day was 2.72±0.44 mm, whereas it was 2.77±0.46 mm on the 26th day. Mean anterior chamber depth measurement of the left eyes on the 1st day was 2.74±0.42 mm, whereas it was 2.80±0.43 mm on the 26th day. This increment of anterior chamber depth value from the 1st to the 26th days was found to be statistically significant (p≤0.05. Dis cus si on: Progesterone and estrogen that rise in the second half of the menstrual cycle might have a deepening effect on the anterior chamber. These findings should be further investigated with more profound studies that also evaluate the hormonal values and their correlations with anterior segment parameters. (Turk J Ophthalmol 2013; 43: 15-8

The management of over closured anterior teeth due to attrition

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Eha Djulaeha

2009-12-01

Full Text Available Background: Tooth is the hardest tissue in human body, that can be injured because of attrition process. For old people, denture attrition process is caused by psysiological process relating with the mastication function which also supported by some bad habits such an bruxism, premature contact, and consuming habit of abrasive food. Attrition or abrasion can also be happened with patien’t dentition who does not have teeth subtutition for long time due the lost of their maxillary as well as mandibulary. The pasient will loose their vertical dimension of occlusion, injure, and the lower jaw becomes over closed which is called over closure. Purpose: This article reported the management of over closured anterior teeth due to attrition. Case: a seventy six year old woman patient came to Prosthodontic Clinic in Faculty of Dentistry, Airlangga University, to rehabilitate her upper and lower severe attrited anterior teeth and her posterior teeth. The patient has experienced of wearing acrylic removable mandibular partial denture ten years ago. Unfortunaly, the denture was uncomfortable, and she did not wear it anymore since five years ago. Case management: The severe attrition of anterior teeth with the lost of occlusal vertical dimension can be treated by improving the occlusal vertical dimension gradually. The treatment is then followed by the increasing of the height of the anterior teeth by lengthening the crown teeth of upper jaw with 12 units of span bridge and the acrylic removable partial denture of lower jaw. Conclusion: The severe attrition of anterior teeth with the lost of occlusal vertical dimension can be treated by improving the occlusal vertical dimension gradually, using long span bridge and acrylic removable partial denture.

Go ahead, grow a head! A planarian's guide to anterior regeneration

Science.gov (United States)

2016-01-01

Abstract The unique ability of some planarian species to regenerate a head de novo, including a functional brain, provides an experimentally accessible system in which to study the mechanisms underlying regeneration. Here, we summarize the current knowledge on the key steps of planarian head regeneration (head‐versus‐tail decision, anterior pole formation and head patterning) and their molecular and cellular basis. Moreover, instructive properties of the anterior pole as a putative organizer and in coordinating anterior midline formation are discussed. Finally, we highlight that regeneration initiation occurs in a two‐step manner and hypothesize that wound‐induced and existing positional cues interact to detect tissue loss and together determine the appropriate regenerative outcomes. PMID:27606065

A chondrosarcoma in the anterior mediastinum mimicking a thymoma

International Nuclear Information System (INIS)

Østergaard, Mia L; Petersen, Rene H; Kalhauge, Anna

2015-01-01

A chondrosarcoma in the anterior mediastinum is a rare finding with a relatively good prognosis. We describe a case of a 75-year-old man with a 2-year history of neck discomfort and weight loss. Imaging showed a homogenous tumor with a minor compression on the anterior part of the heart. It had close relation to the ribs, no surrounding fat, and a thymoma was suspected. Biopsy prior to surgery was impossible due to the location of the tumor. Unfortunately, final pathology from the surgical specimen revealed a chondrosarcoma

Mucoepidermoid carcinoma of the anterior maxilla: A rare entity

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Smitha Kullaje

2014-01-01

Full Text Available Mucoepidermoid carcinoma is the second most common salivary gland tumor primarily involving major salivary glands and intraoral minor salivary glands. Although rare, it can occur in the jaw bones, but it is very rare in the maxillary anterior region. Here, we present a case of mucoepidermoid carcinoma occurring in maxillary anterior region in a 33-year-old male patient presented as painless swelling clinically appearing similar to a periapical or nasopalatine cyst. The final diagnosis of this lesion was made after microscopic examination of biopsy specimen.

Relative Frequencies of Arteritic and Nonarteritic Anterior Ischemic Optic Neuropathy in an Arab Population.

Science.gov (United States)

Gruener, Anna M; Chang, Jessica R; Bosley, Thomas M; Al-Sadah, Zakeya M; Kum, Clarissa; McCulley, Timothy J

2017-12-01

To evaluate the relative frequencies of arteritic and nonarteritic anterior ischemic optic neuropathy (AION) in an Arab population and to compare and contrast these findings with known epidemiological data from Caucasian populations. A retrospective review of the medical records of all patients diagnosed with AION at the King Khaled Eye Specialist Hospital (KKESH) in Riyadh, Saudi Arabia, between 1997 and 2012. Of 171 patients with AION, 4 had biopsy-proven giant-cell arteritis (GCA). The relative frequencies of arteritic anterior ischemic optic neuropathy (AAION) and nonarteritic anterior ischemic optic neuropathy (NAION) in this Arab cohort were 2.3% and 97.7%, respectively. The relative frequencies of arteritic anterior ischemic optic neuropathy and nonarteritic anterior ischemic optic neuropathy differ between Arab and North American clinic-based populations, with giant-cell arteritis-related ischemia being much less frequent in Saudi Arabia.

Aproximación al tratamiento precoz de la mordida cruzada anterior

OpenAIRE

Espasa Suárez de Deza, José Enrique; Boj Quesada, Juan Ramón; Ustrell i Torrent, Josep Maria, 1953-

1994-01-01

La mordida cruzada anterior debe tratarse precozmente, para mejorar el entorno dentoalveolar y favorecer el crecimiento correcto de los maxilares. En este artículo se analizan: la etiología, el diagnóstico de la mordida cruzada anterior y se mencionan diferentes formas de tratamiento de esta maloclusión en dentición primaria y mixta.

Laser speckle flowgraphy for differentiating between nonarteritic ischemic optic neuropathy and anterior optic neuritis.

Science.gov (United States)

Maekubo, Tomoyuki; Chuman, Hideki; Nao-I, Nobuhisa

2013-07-01

The aim of this study was to investigate the usefulness of laser speckle flowgraphy (LSFG) for the differentiation of acute nonarteritic ischemic optic neuropathy (NAION) from anterior optic neuritis (ON). To investigate blood flow in the optic disc under normal conditions, NAION, and anterior ON, we compared the tissue blood flow of the right eye with that of the left eye in the control group, and that of the affected eye with that of the unaffected eye in the NAION and anterior ON groups. In the normal control group, the tissue blood flow did not significantly differ between the right and left eyes. In the NAION group, all 6 patients had decreased optic disc blood flow in the NAION eye when compared with the unaffected eye. By contrast, in the anterior ON group, all 6 patients had increased optic disc blood flow in the anterior ON eye when compared with the unaffected eye. In the NAION group, the mean blur rate (MBR) of the affected eyes was 29.5 % lower than that of the unaffected eyes. In the anterior ON group, the MBR of the affected eyes was 15.9 % higher than that of the unaffected eyes. LSFG could be useful in differentiating between NAION and anterior ON. In addition, this imaging technique saves time and is noninvasive.

Invisalign® treatment in the anterior region: were the predicted tooth movements achieved?

Science.gov (United States)

Krieger, Elena; Seiferth, Jörg; Marinello, Ivana; Jung, Britta A; Wriedt, Susanne; Jacobs, Collin; Wehrbein, Heinrich

2012-09-01

Based on our previous pilot study, the objective of this extended study was to compare (a) casts to their corresponding digital ClinCheck® models at baseline and (b) the tooth movement achieved at the end of aligner therapy (Invisalign®) to the predicted movement in the anterior region. Pre- and post-treatment casts as well as initial and final ClinChecks® models of 50 patients (15-63 years of age) were analyzed. All patients were treated with Invisalign® (Align Technology, Santa Clara, CA, USA). Evaluated parameters were: upper/lower anterior arch length and intercanine distance, overjet, overbite, dental midline shift, and the irregularity index according to Little. The comparison achieved/predicted tooth movement was tested for equivalence [adjusted 98.57% confidence interval (- 1.00; + 1.00)]. Before treatment the anterior crowding, according to Little, was on average 5.39 mm (minimum 1.50 mm, maximum 14.50 mm) in the upper dentition and 5.96 mm (minimum 2.00 mm, maximum 11.50 mm) in the lower dentition. After treatment the values were reduced to 1.57 mm (minimum 0 mm, maximum 4.5 mm) in the maxilla and 0.82 mm (minimum 0 mm, maximum 2.50 mm) in the mandible. We found slight deviations between pretreatment casts and initialClinCheck® ranging on average from -0.08 mm (SD ± 0.29) for the overjet and up to -0.28 mm (SD ± 0.46) for the upper anterior arch length. The difference between achieved/predicted tooth movements ranged on average from 0.01 mm (SD ± 0.48) for the lower anterior arch length, up to 0.7 mm (SD ± 0.87) for the overbite. All parameters were significantly equivalent except for the overbite (-1.02; -0.39). Performed with aligners (Invisalign®), the resolvement of the partly severe anterior crowding was successfully accomplished. Resolving lower anterior crowding by protrusion of the anterior teeth (i.e., enlargement of the anterior arch length) seems well predictable. The initial ClinCheck® models provided high accuracy compared to the

A organização e a dinâmica participativa dos segmentos sociais nas Conferências Municipais de Saúde (Organization and active participation of social segments in Municipal Health Conferences

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Tânia Regina Krüger

2012-02-01

Full Text Available Resumo Este texto descreve e analisa o processo organizativo e a dinâmica participativa dos diferentes segmentos que integraram as Conferências Municipais de Saúde, realizadas nos anos de 2003 e 2007 em nove municípios de Santa Catarina. Para a pesquisa de campo, trabalhou-se com materiais próprios da organização das plenárias, Relatórios Finais das Conferências e a realização de entrevistas gravadas. Considerou-se como processo organizativo a iniciativa de convocar a Conferência, todo o processo de divulgação, a organização da realização da plenária, a elaboração do Relatório Final e a sua divulgação. A dinâmica participativa entre os segmentos foi explorada, sobretudo, a partir das entrevistas, que destacaram a pouca participação dos usuários ou uma participação que revela desconhecimento da política e as interfaces burocráticas. Abstract: This text describes and analyzes the organizational process and the active participation of the different segments that integrated the Municipal Health Conferences that took place in 2003 and 2007 in nine cities in the state of Santa Catarina. The field research included the study of the material used for the organization of the plenary sessions, conferences final reports and recorded interviews. The following activities were considered part of the organizational process: the initiative of calling the conference, the advertisement process, the organization of the plenary event, the elaboration of the final report and its publication. The active participation and the dynamics of the segments were explored, especially the interviews that pointed out the little participation of the users and also the form of participation that reveals a lack of knowledge concerning health politics and its bureaucratic constraints.

The aesthetic treatment for anterior teeth with lost crown by endorestoration

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Nanik Zubaidah

2009-06-01

Full Text Available Background: The aesthetic has an important role in social life, especially the anterior teeth. The aesthetic abnormality of anterior teeth i.e. discoloration, malpotition or the anterior teeth with crown damage for more than one third or all part of crown is lost due to caries or other causes, will influence its appearance especially during smile. Purpose: The aim of this case report, therefore, is to show how teeth with clinical crown lost or only the root left still can be treated by endorestoration treatment in order to reconstruct the shape and function of the teeth similar to the original ones. Case: Female 52 years old with the lost crown of anterior teeth. The patient did not want her teeth to be extracted. Case Management: The abnormality of these teeth are still able to be reconstructed by endorestoration i.e. endodontic treatment with post and core insertion in the root canal will increase its retention and recovery by the porcelain crown fused to metal to recover the original formation and aesthetic and thus has the normal refunction. The treatment, it improve the confidence of the patient, and also can function normally. The patient did not feel pain. Ronsenography showed the periapical lesion diminished, the neighbor gingival was going better in both function and color. Conclusion: Endorestoration treatment on the anterior teeth with lost crown could recover the normal function, dental aesthetic and self confidence.

La participación de los trabajadores en el capital social mediante operaciones de asistencia financiera. Especial referencia al art. 81.2 LSA

OpenAIRE

Nieto Rojas, Patricia

2007-01-01

La integración de los trabajadores en el capital social puede ser instrumentada mediante diferentes vías: distribución gratuita de acciones, entrega de opciones sobre acciones o mediante la asistencia financiera para la adquisición de acciones; el objetivo del presente artículo es analizar las implicaciones laborales de este último mecanismo previsto en el artículo 81.2 LSA que exceptúa de la prohibición general de asistencia financiera a los negocios dirigidos a facilitar la adquisición de a...

Películas orgánicas delgadas preparadas mediante diversos métodos: propiedades ópticas, morfológicas y eléctricas

OpenAIRE

Pérez-Morales, M.

2005-01-01

En la presente Memoria se estudia la organización molecular de compuestos orgánicos, tales como derivados de porfirinas y C60, en películas de Langmuir formadas en la interfase aire-agua. Asimismo, se han depositado películas de derivados de porfirina sobre electrodos ITO mediante métodos electroquímicos. Por último, se han estudiado las propiedades fluorescentes de películas de porfirina preparadas mediante diversos métodos, para su posterior aplicación a la preparación de dispositivos elect...

Estudio de la recuperación de cromo hexavalente mediante un reactor electroquímico de compartimentos separados por separadores cerámicos

OpenAIRE

REYES PINEDA, HENRY

2011-01-01

La Tesis Doctoral "Estudio de la recuperación de cromo hexavalente mediante un reactor electroquímico de compartimentos separados por separadores cerámicos" se centra en la posibilidad de recuperación del cromo hexavalente procedente de las disoluciones de mordentado de las industrias de metalizado de plásticos mediante la utilización de un reactor electroquímico de compartimentos separados por separadores cerámicos fabricados a diferente presión y diferente composición de almidón. Con la rec...

Valoración nutricional mediante curvas de crecimiento de la OMS y las clasificaciones de Gómez / Waterlow. Estudio de prevalencia. Cuenca-2015

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Chacón Abril, Karla Lorena; Segarra Ortega, José Xavier; Lasso Lazo, Rubén Santiago; Huiracocha Tutivén, María de Lourdes

2016-01-01

OBJETIVO:Determinar la prevalencia de malnutrición mediante las curvas de crecimiento (OMS) y de desnutrición según la clasificación Gómez/Waterlow; establecer ventajas y desventajas del empleo de ambos sistemas de clasificación.MÉTODOS:Estudio de prevalencia realizado en el Subcentro de Salud Sinincay, con una población de 737 niños/as registrados en la matriz de vigilancia alimentaria y nutricional (SIVAN) durante Enero-Junio 2015, que identificó la malnutrición infantil mediante el uso de ...

CARACTERÍSTICA DOS SEGMENTOS SETORIAIS NO BRASIL: UMA BREVE ABORDAGEM SOBRE O SETOR DA AGROINDÚSTRIA

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Diogo Del Fiori

2014-07-01

Full Text Available O presente trabalho se propõe a fazer uma análise das características setoriais do Brasil desde a segunda metade do século XIX até a data presente, com o objetivo de mostrar que embora tenham ocorrido intervenções do Estado para a realização do processo de industrialização ao longo da história brasileira, nota-se que elas foram de certa forma ineficiente, e acabaram influenciando a trajetória dos setores econômicos de tal forma que na data presente, o Brasil possui a predominância de exportação dos setores básicos, sendo uma verdadeira contradição para as metas que o Brasil almeja alcançar nas próximas décadas. Este trabalho sugere que o Brasil necessita rever suas políticas e escolher algum setor líder no mercado mundial e o setor da Agroindústria poderia ser o segmento econômico líder do país, conforme será abordado neste trabalho. Palavras-Chave: Indústrias, Estado, Setores Abstract: This work intends to make an analysis of industry characteristics in Brazil since the mid-nineteenth century to the present date in order to show that although there were state interventions to the achievement of industrialization throughout history Brazilian note that they were somewhat inefficient, and ultimately influencing the trajectory of economic sectors so that at the present time, Brazil has the predominance of the basic sectors of export, being a real contradiction to the goals that Brazil intends to reach the coming decades. This work suggests that Brazil needs to review its policies and choose a sector leader in the world market and agribusiness sector could be the key economic sector in Brazil, according to his approach in this work. Key Words: Industries, State, Sectors

Effects of neuromuscular training on knee joint stability after anterior cruciate ligament reconstruction.

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Shim, Jae-Kwang; Choi, Ho-Suk; Shin, Jun-Ho

2015-12-01

[Purpose] This study examined the effects of neuromuscular training on knee joint stability after anterior cruciate ligament reconstruction. [Subjects and Methods] The subjects were 16 adults who underwent arthroscopic anterior cruciate reconstruction and neuromuscular training. The Lysholm scale was used to assess functional disorders on the affected knee joint. A KT-2000 arthrometer was used to measure anterior displacement of the tibia against the femur. Surface electromyography was used to detect the muscle activation of the vastus medialis oblique, vastus lateralis, biceps femoris, and semitendinosus before and after neuromuscular training. [Results] There was significant relaxation in tibial anterior displacement of the affected and sound sides in the supine position before neuromuscular training. Furthermore, the difference in the tibial anterior displacement of the affected knee joints in the standing position was reduced after neuromuscular training. Moreover, the variation of the muscle activation evoked higher muscle activation of the vastus medialis oblique, vastus lateralis, biceps femoris, and semitendinosus. [Conclusion] Neuromuscular training may improve functional joint stability in patients with orthopedic musculoskeletal injuries in the postoperative period.

Anterior migration of dexamethasone implant in a pseudophakic patient with intact posterior capsule

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Nilufer Kocak

2014-01-01

Full Text Available Intravitreal application of Ozurdex ® (Allergan, Inc., Irvine, CA, USA which is a biodegradable, sustained-release dexamethasone implant has been reported to be effective in the treatment of macular edema. Migration of such implant into the anterior chamber has been recently described in cases without perfect zonular or the posterior capsular integrity. Herein, we report the first case with anterior migration of Ozurdex ® implant that mislocated just behind the intraocular lens (IOL in an intact capsular bag. It is thought that such implant migrated anteriorly towards into the posterior chamber through weak zonules as the present case had a medical history of uneventful phacoemulsification surgery with the implantation of posterior chamber IOL. However, the migrated implant was well tolerated since there was no sign of the corneal complication, rise in intraocular pressure, and anterior chamber reaction. Close follow-up was scheduled to find out any signs of anterior segment pathology. Meanwhile dexamethasone implant completely degraded at the 4 th month of postoperative follow-up.

French translation and validation of the "Anterior Knee Pain Scale" (AKPS).

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Buckinx, F; Bornheim, S; Remy, G; Van Beveren, J; Reginster, Jy; Bruyère, O; Dardenne, N; Kaux, J F

2017-12-21

To linguistically and cross-culturally translate the Anterior Knee Pain Scale into French and to evaluate the reliability and validity of this translated version of the questionnaire. The translation part was performed in six stages, according to international guidelines: (i) two initial translations from English to French; (ii) synthesis of the two translations; (iii) backward translations into the original language; (iv) expert committee to compare the backward translations with the original questionnaire; (v) pre-final version testing and (VI) expert committee appraisal. To validate the French version of the Anterior Knee Pain Scale, we assessed its validity, reliability and floor/ceiling effects. To do this, volunteer patients from the French part of Belgium and from France, with patellofemoral pain were asked to answer the French version of the Anterior Knee Pain Scale at baseline and after 7 days, as well as the generic SF-36 questionnaire. The Anterior Knee Pain Scale was translated without any major difficulties. A total of 101 subjects aged 34.5 ± 11.4 years (58.4% of women) were included in this study. Results indicated an excellent test-retest reliability (Intra-class correlation coefficient (ICC) = 0.97, 95%CI: 0.96-0.98), a high internal consistency (Cronbach's alpha = 0.87), a consistent construct validity (high correlations with the SF-36 questionnaire were found with domains related to physical function (r = 0.80), physical role (r = 0.70) and pain (r = 0.64)) and low or moderate correlations with domains related to mental health (r = 0.26), vitality (r = 0.32) and social function (r = 0.41). Moreover, no floor/ceiling effects have been found. A valid French version of the Anterior Knee Pain Scale is now available and can be used with confidence to better assess the disease burden associated with patellofemoral pain. It was successfully cross-culturally adapted into French. Implications for rehabilitation The

Effect of anterior cervical osteophyte in poststroke dysphagia: a case-control study.

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Kim, Youngkook; Park, Geun-Young; Seo, Yu Jung; Im, Sun

2015-07-01

To investigate whether the concomitant presence of anterior cervical osteophytes can influence the severity and outcome of patients with poststroke dysphagia. Retrospective case-control study. Hospital. A total of 40 participants were identified (N=40). Patients with poststroke dysphagia with anterior cervical osteophytes (n=20) were identified and matched by age, sex, location, and laterality of the stroke lesion to a poststroke dysphagia control group with no anterior cervical osteophytes (n=20). Not applicable. Videofluoroscopic swallowing study, Functional Oral Intake Scale (FOIS), and Penetration-Aspiration Scale results assessed within the first month of stroke were analyzed. The FOIS at 6 months was recorded, and severity of dysphagia was compared between the 2 groups. The case group had larger degrees of postswallow residues in the valleculae and pyriform sinuses (P=.020 and Pdysphagia (OR=15.375; 95% CI, 3.195-infinity). The presence of anterior cervical osteophytes, which may cause mechanical obstruction and interfere with residue clearance at the valleculae and pyriform sinuses and result in more postswallow aspiration, may influence initial severity and outcome of poststroke dysphagia. The presence of anterior cervical osteophytes may be considered an important clinical condition that may affect poststroke dysphagia rehabilitation. Copyright © 2015 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

Activation of anterior insula during self-reflection.

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Gemma Modinos

Full Text Available BACKGROUND: Functional neuroimaging studies have suggested activation of midline frontoparietal brain regions to be at the core of self-related processes. However, although some studies reported involvement of the insula, little attention has been paid to this region as forming part of the "self"-network. METHODOLOGY/PRINCIPAL FINDINGS: Using functional magnetic resonance imaging (fMRI, we aimed at replicating and extending previous studies by scanning subjects whilst reflecting upon their own personal qualities as compared to those of an acquaintance. A third condition with statements about general knowledge was used to control for attention, semantic processing and decision making processes. The results showed a significant effect of task in brain activity, consistent with previous findings, by which both person conditions recruited a common set of medial prefrontal and posterior regions, yet significant differences between self and other were found in the medial prefrontal cortex (MPFC and the anterior cingulate cortex (ACC. Notably, significant neural activation in the left anterior insula was observed as uniquely associated with self-reflection. CONCLUSIONS/SIGNIFICANCE: The results provide further evidence for the specific recruitment of anterior MPFC and ACC regions for self-related processing, and highlight a role for the insula in self-reflection. As the insula is closely connected with ascending internal body signals, this may indicate that the accumulation of changes in affective states that might be implied in self-processing may contribute to our sense of self.

Superficie específica de una bentonita mediante la adsorción de azul de metileno

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Pinzón Bello, Jorge Alejo

2010-01-01

Se estudió la determinación de la superficie específica de una bentonita colombiana, procedente del Valle del Cauca, mediante la adsorción de azul de metileno, a 298 K. Este método se comparó con el de la adsorción de nitrógeno a 77 K.

Utilização de células-tronco autólogas de medula óssea na regeneração do nervo tibial de coelhos mediante técnica de tubulização com prótese de silicone Applyng of autologous stem cells from bone marrow in the regeneration of tibial nerve of rabbits using the tubulization technique with silicone tube

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Lucas Marques Colomé

2008-12-01

Full Text Available Neste estudo é apresentado um modelo experimental de defeito agudo em nervo periférico para avaliação da regeneração nervosa mediante técnica de tubulização associada à inoculação de células-tronco autólogas de medula óssea. Foram utilizados 12 coelhos Nova Zelândia albinos, submetidos à secção bilateral e ao afastamento de 5mm do nervo tibial e posterior reparo mediante utilização de câmara de silicone. Internamente à prótese de tubulização do nervo tibial esquerdo em todos os animais, foram inoculadas células-tronco autólogas de medula óssea, coletadas a partir do úmero. Como grupo controle (nervo tibial direito, mediante aplicação da mesma técnica de reparo, solução de NaCl 0,9% foi administrada internamente à prótese. Após 30 dias de observação, os animais foram eutanasiados e foi realizada a avaliação histológica dos segmentos nervosos por meio das colorações de hematoxilina-eosina, luxol fast blue e azul de toluidina. Com os resultados, foi possível concluir que o transplante de células-tronco autólogas associado à técnica de tubulização apresenta vantagens no processo de regeneração nervosa periférica.This study presents an experimental model of an acute deffect in a peripheral nerve to evaluate neural regeneration using a tubulization technique associated with the inoculation of autologous stem cells from bone marrow. A total of 12 New Zealand white rabbits underwent a bilateral dissection of the tibial nerve followed by repair with silicone tubulization. On the left tibial nerve of all animals, the tube was filled with autologous bone marrow-derived stem cells collected from the humerus. For control, using the same repair technique, the tubes were filled with a NaCl solution in the right tibial nerve. After 30 days of observation, the animals were euthanized and a histological evaluation of the collected nerve segments was performed by staining with hematoxylin-eosin, luxol fast

Anterior celiac plexus block for interventional biliary procedures

International Nuclear Information System (INIS)

Benenati, J.F.; Widlus, D.M.; Venbrux, A.C.; Lynch-Nyhan, A.; Osterman, F.A.; Taylor, D.R.; Tewes, P.A.; Cassidy, F.P.

1989-01-01

This paper reports temporary celiac ganglion block for pain relief during biliary procedures performed without complication in 65 patients. The block was given from an anterior approach, with 30 mL of bupivacaine injected over the right T-12 pedicle. Fluoroscopy was used to guide the needle 2 cm anterior to the spine. Patients were assigned to one of three groups based on degree of anesthesia. In group 1, there was no benefit (20%); in group 2, moderate regional anesthesia (22%); and in group 3, excellent anesthesia (58%). The procedure may be performed at the start of or any time during the examination and provides satisfactory regional anesthesia in 80% of patients

Control mediante modos deslizantes en tiempo discreto para el seguimiento de trayectorias de un robot móvil1

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P.A. Niño-Suárez

2007-10-01

Full Text Available Resumen: En este trabajo se presenta una estrategia de control en tiempo discreto para el seguimiento de trayectorias de un robot móvil tipo (2,0 controlado remotamente. La estrategia de control se desarrolló mediante un enfoque de modos deslizantes, considerando el modelo discreto exacto del vehículo en el cual se incluyen los efectos del retardo de transporte causado por la propagación de las señales sobre una red de comunicación. El esquema de control garantiza el seguimiento de trayectorias predeterminadas obteniéndose convergencia asintótica de los errores de seguimiento. La estrategia propuesta es evaluada mediante una serie de resultados por simulación. Palabras clave: Robot móvil, retardos de transporte, control en tiempo discreto, modos deslizantes

Manejo sostenible y sustentable de fincas productoras mediante procesos participativos en Sáchica, Boyacá

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Ángel Eduardo Ramírez-Amaya

2013-07-01

Full Text Available Objetivo. Elaborar un proyecto de desarrollo sostenible y sustentable de fincas productoras mediante procesos participativos en el municipio de Sáchica, Boyacá. Materiales y métodos. La investigación se realizó con familias campesinas de la vereda Arrayán Alto, del municipio de Sáchica, Boyacá, mediante la metodología Investigación Acción Participativa (IAP, que se centra en la participación de las comunidades para elaborar propuestas concertadas con ellas. El trabajo se desarrolló en varias fases, que incluyeron un diagnóstico socioeconómico de las familias, capacitaciones y concientización en temas relacionados con la agricultura ecológica y de granjas integrales. Resultados. Se elaboró un plan de trabajo que permitió la construcción de un documento final que ha servido para el apoyo logístico o económico de las entidades gubernamentales locales para la instalación y plantación técnica del cultivo de gulupa con familias de la vereda Arrayán Alto.

Hypertrophic anterior cervical osteophytes causing dysphagia and airway obstruction.

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Lin, Harrison W; Quesnel, Alicia M; Holman, Allison S; Curry, William T; Rho, Michael B

2009-10-01

Hyperostosis of anterior cervical vertebral osteophytes can produce otolaryngological symptoms ranging from mild dysphagia, dysphonia, and foreign body sensation to severe food impaction and stridulous dyspnea. Airway compromise necessitating a tracheostomy is very rare. We discuss the case of an elderly man who presented with progressive dysphagia and a large hypopharyngeal mass as his initial manifestations of hypertrophic anterior cervical osteophytes. After a biopsy of the mass, the patient went into airway distress due to bilateral vocal fold fixation by the enlarging mass and consequently required a surgical airway. A combined team approach to the removal of the osteophytes successfully resolved his symptoms. The clinical, diagnostic, radiologic, and therapeutic principles involved in this case are presented and discussed. The recognition of hypertrophic osteophytes as a potential cause of common otolaryngological symptoms in the elderly population is paramount, as these symptoms can rapidly progress and lead to life-threatening airway obstruction. Medical and surgical interventions can be employed for the treatment of hypertrophic anterior cervical osteophytes, and they often result in favorable outcomes.

Nonarteritic anterior ischemic optic neuropathy: cause, effect, and management

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Berry S

2017-09-01

Full Text Available Shauna Berry,1 Weijie V Lin,2 Ama Sadaka,1 Andrew G Lee1–7 1Department of Ophthalmology, Blanton Eye Institute, Houston Methodist Hospital, Houston, TX, USA; 2Department of Ophthalmology, Baylor College of Medicine, Houston, TX, USA; 3Department of Ophthalmology and Visual Sciences, University of Texas Medical Branch (UTMB, Galveston, TX, USA; 4Department of Ophthalmology, 5Department of Neurology, 6Department of Neurosurgery, Weill Cornell Medicine, Houston, TX, USA; 7Department of Ophthalmology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA Abstract: Nonarteritic anterior ischemic optic neuropathy (NAION is the most common form of ischemic optic neuropathy and the second most common optic neuropathy. Patients are generally over the age of 50 years with vasculopathic risk factors (eg, diabetes mellitus, hypertension, and obstructive sleep apnea. The exact mechanism of NAION is not fully understood. In addition, several treatment options have been proposed. This article summarizes the current literature on the diagnosis, treatment, and management of NAION. Keywords: anterior ischemic optic neuropathy, nonarteritic anterior ischemic optic neuropathy, ischemic optic neuropathy

EL APRENDIZAJE DE LOS CONCEPTOS DE FUERZAS INTERMOLECULARES E INTRAMOLECULARES MEDIANTE LA MODELIZACIÓN DIDÁCTICA

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CHRISTIAN FERNNEY GIRALDO MACÍAS

2013-07-01

Full Text Available La modelización está siendo usada para la enseñanza y el aprendizaje en las Ciencias Naturales en diferentes contextos y para atender a diferentes problemáticas. En este caso será utilizada para explorar y analizar la relevancia que puede tener su uso en el aprendizaje de los conceptos Fuerzas Intramoleculares e Intermolecualres, partiendo de la aplicación de una serie de actividades basadas en el Ciclo Didáctico (Jorba y Sanmartí, 1996. Los datos se discuten mediante tres aspectos principales: las ideas previas de los estudiantes, el trabajo con nuevo material (nuevos conceptos, experimentos sencillos y uso de herramientas informáticas y los argumentos finales, mediante el uso de situaciones problemas. Los resultados muestran, como los estudiantes (14 y 16 años de edad evidencian un progreso conceptual al argumentar con mayor claridad las situaciones problema abordadas en el transcurso del trabajo y en la construcción de modelos más cercanos al campo científico.

Aneurysms of the anterior and posterior cerebral circulation: comparison of the morphometric features.

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Tykocki, Tomasz; Kostkiewicz, Bogusław

2014-09-01

Intracranial aneurysms (IAs) located in the posterior circulation are considered to have higher annual bleed rates than those in the anterior circulation. The aim of the study was to compare the morphometric factors differentiating between IAs located in the anterior and posterior cerebral circulation. A total number of 254 IAs diagnosed between 2009 and 2012 were retrospectively analyzed. All patients qualified for diagnostic, three-dimensional rotational angiography. IAs were assigned to either the anterior or posterior cerebral circulation subsets for the analysis. Means were compared with a t-test. The univariate and stepwise logistic regression analyses were used to determine the predictors of morphometric differences between the groups. For the defined predictors, ROC (receiver-operating characteristic) curves and interactive dot diagrams were calculated with the cutoff values of the morphometric factors. The number of anterior cerebral circulation IAs was 179 (70.5 %); 141 (55.5 %) aneurysms were ruptured. Significant differences between anterior and posterior circulation IAs were found for: the parent artery size (5.08 ± 1.8 mm vs. 3.95 ± 1.5 mm; p 45) and aspect ratio (AR) (1.91 ± 0.8 vs. 2.75 ± 1.8; p = 0.02). Predicting factors differentiating anterior and posterior circulation IAs were: the AR (OR = 2.20; 95 % CI 1.80-270; Is 270 correct or should it be 2.70 and parent artery size (OR = 0.44; 95 % CI 0.38-0.54). The cutoff point in the ROC curve was 2.185 for the AR and 4.89 mm for parent artery size. Aspect ratio and parent artery size were found to be predictive morphometric factors in differentiating between anterior and posterior cerebral IAs.

Inducción de organogénesis indirecta en Abarco (Cariniana pyriformis Miers. (Juz. et Buk.

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Mary Luz Yaya

2005-01-01

Full Text Available Se indujeron procesos primarios de morfogénesis de novo vía organogénesis indirecta en segmentos de hipocótilo de abarco, provenientes de plántulas in vitro de dos semanas de edad. El material fuente se obtuvo por germinación de embriones en Woody Plant Médium (WPM diluido a la mitad y sin reguladores de crecimiento. La formación de callo organogénico se estimuló mediante la adición de ácido indolacético (AIA conjuntamente con 6-bencilaminopurina (BAP. Después de cuatro semanas el mayor porcentaje de formación de callo (75% se observó con la combinación AIA 1,21 µM y BAP 7,6 µM

Tension Band Plating for Chronic Anterior Tibial Stress Fractures in High-Performance Athletes.

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Zbeda, Robert M; Sculco, Peter K; Urch, Ekaterina Y; Lazaro, Lionel E; Borens, Olivier; Williams, Riley J; Lorich, Dean G; Wellman, David S; Helfet, David L

2015-07-01

Anterior tibial stress fractures are associated with high rates of delayed union and nonunion, which can be particularly devastating to a professional athlete who requires rapid return to competition. Current surgical treatment strategies include intramedullary nailing, which has satisfactory rates of fracture union but an associated risk of anterior knee pain. Anterior tension band plating is a biomechanically sound alternative treatment for these fractures. Tension band plating of chronic anterior tibial stress fractures leads to rapid healing and return to physical activity and avoids the anterior knee pain associated with intramedullary nailing. Case series; Level of evidence, 4. Between 2001 and 2013, there were 13 chronic anterior tibial stress fractures in 12 professional or collegiate athletes who underwent tension band plating after failing nonoperative management. Patient charts were retrospectively reviewed for demographics, injury history, and surgical details. Radiographs were used to assess time to osseous union. Follow-up notes and phone interviews were used to determine follow-up time, return to training time, and whether the patient was able to return to competition. Cases included 13 stress fractures in 12 patients (9 females, 3 males). Five patients were track-and-field athletes, 4 patients played basketball, 2 patients played volleyball, and 1 was a ballet dancer. Five patients were Division I collegiate athletes and 7 were professional or Olympic athletes. Average age at time of surgery was 23.6 years (range, 20-32 years). Osseous union occurred on average at 9.6 weeks (range, 5.3-16.9 weeks) after surgery. Patients returned to training on average at 11.1 weeks (range, 5.7-20 weeks). Ninety-two percent (12/13) eventually returned to preinjury competition levels. Thirty-eight percent (5/13) underwent removal of hardware for plate prominence. There was no incidence of infection or nonunion. Anterior tension band plating for chronic tibial stress

Slit-lamp Needling of the Anterior Capsule for Aqueous Misdirection After Hyaloido-zonulectomy and Iridectomy.

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Mardelli, Pierre G; Mardelli, Marc E

2018-04-01

We present a case of persistent aqueous misdirection, after Ahmed glaucoma valve surgery, despite undergoing an anterior vitrectomy with hyaloido-zonulectomy and iridectomy. A 73-year-old female patient, 4 months after phacotrabeculectomy, was referred with persistent high intraocular pressure (IOP). Postoperatively, she developed aqueous misdirection with a flat anterior chamber (AC) but with an IOP of 15 mm Hg. On presentation, her AC was shallow with peripheral iris-cornea touch, and her IOP was 39 mm Hg. Posterior Nd:Yag capsulotomy with disruption of anterior hyaloid face partially deepened the AC. With failure of the trabeculectomy and high IOP, an Ahmed valve was placed. On the first operative day the AC was deep with an IOP of 10 mm Hg. On day 6 the patient presented with pain, flat AC, and an IOP of 10 mm Hg. Fundus examination revealed no choroidal effusion. Despite repeated reformation with viscoelastic, the AC failed to deepen. An anterior vitrectomy with hyaloido-zonulectomy was performed. Initially, the AC was deep, but, a few days later, it was flat. Multiple reformations and vitreous tap failed to keep the AC deep. A 30-G needle was passed at the slit lamp across the temporal cornea, iris, and anterior capsule into the anterior vitreous cavity. The needle was then partially withdrawn and used to create a space between the intraocular lens and anterior capsule. This immediately deepened the AC and remained so for the duration of follow-up (4 mo). Slit-lamp needling of the anterior lens capsule can be successfully performed to help resolve a persistent case of aqueous misdirection after anterior vitrectomy.

Anterior internal impingement of the shoulder in rugby players and other overhead athletes

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Siddharth R. Shah, MBBS, MSc Sports Medicine (UK, MRCS-Ed

2017-04-01

Conclusion: This series of anterior internal impingement, which we believe is the largest in the literature to date, demonstrates the value of an to assess and successfully treat overhead athletes with anterior impingement syndrome.

Bilateral blindness following anterior nasal packing in a case of nasopharyngeal angiofibroma.

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Sahoo, A K; Preetam, C; Kumar, R; Samal, D K

2016-11-01

Epistaxis is the most common ENT emergency encountered in the Emergency Department. Most cases can be managed by simple anterior nasal packing. This is usually a safe and very effective option in an emergency situation, requiring minimal expertise and infrastructure. This paper describes a rare instance of a serious complication following anterior nasal packing in a case of nasopharyngeal angiofibroma. A 27-year-old man diagnosed with nasopharyngeal angiofibroma presented to the Emergency Department with bilateral epistaxis. The patient was stabilised and anterior nasal packing was performed, which controlled the bleeding. Three hours later, the patient developed complete blindness in both eyes. Aggressive medical management was initiated immediately, but failed to restore the patient's vision. Anterior nasal packing is a simple and minimally invasive procedure practised regularly in an Emergency Department setting. However, it can occasionally lead to serious complications such as blindness. Thus, obtaining informed consent is essential to avoid medico-legal consequences in high-risk cases.

Surgical treatment of traumatic cervical facet dislocation: anterior, posterior or combined approaches?

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Catarina C. Lins

Full Text Available ABSTRACT Surgical treatment is well accepted for patients with traumatic cervical facet joint dislocations (CFD, but there is uncertainty over which approach is better: anterior, posterior or combined. We performed a systematic literature review to evaluate the indications for anterior and posterior approaches in the management of CFD. Anterior approaches can restore cervical lordosis, and cause less postoperative pain and less wound problems. Posterior approaches are useful for direct reduction of locked facet joints and provide stronger fixation from a biomechanical point of view. Combined approaches can be used in more complex cases. Although both anterior and posterior approaches can be used interchangeably, there are some patients who may benefit from one of them over the other, as discussed in this review. Surgeons who treat cervical spine trauma should be able to perform both procedures as well as combined approaches to adequately manage CFD and improve patients’ final outcomes.

ANTERIOR OPEN-BITE TREATMENT BY MEANS OF ZYGOMATIC MINIPLATES: A CASE REPORT

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Kadir BEYCAN

2017-01-01

Full Text Available This case report presents the treatment of a patient with skeletal Cl II malocclusion and anterior open-bite who was treated with zygomatic miniplates through the intrusion of maxillary posterior teeth. A 16-year-old female patient with a chief complaint of anterior open-bite had a symmetric face, incompetent lips, convex profile, retrusive lower lip and chin. Intraoral examination showed that the buccal segments were in Class II relationship, and there was anterior open-bite (overbite -6.5 mm. The cephalometric analysis showed Class II skeletal relationship with increased lower facial height. The treatment plan included intrusion of the maxillary posterior teeth using zygomatic miniplates followed by fixed orthodontic treatment. At the end of treatment Class I canine and molar relationships were achieved, anterior open-bite was corrected and normal smile line was obtained. Skeletal anchorage using zygomatic miniplates is an effective method for open-bite treatment through the intrusion of maxillary posterior teeth.

Anterior cervical osteophytes causing dysphagia and dyspnea: an uncommon entity revisited.

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Giger, Roland; Dulguerov, Pavel; Payer, Michael

2006-10-01

Large anterior cervical osteophytes can occur in degeneration of the cervical spine or in diffuse idiopathic skeletal hyperostosis (DISH). We present the case of an 83-year-old patient with progressive dysphagia and acute dyspnea, necessitating emergency tracheotomy. Voluminous anterior cervical osteophytes extending from C3 to C7 and narrowing the pharyngoesophageal segment by external compression and bilateral vocal fold immobility were diagnosed radiologically and by fiberoptic laryngoscopy. Surgical removal of all osteophytes led to the resolution of symptoms. Dyspnea with or without dysphagia caused by hypertrophic anterior cervical osteophytes is an uncommon entity. The exhaustive diagnostic workup proposed in the literature could be simplified by using fiberoptic laryngoscopy and dynamic videofluoroscopy. The causes, treatment, and outcome are discussed.

Anterior Abdominal Wall Leiomyoma Arising De Novo in a Perimenopausal Woman

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Hamed A. Al-Wadaani

2012-07-01

Full Text Available Extrauterine or extraintestinal leiomyomas are extremely uncommon especially in the pre-peritoneal area or within the anterior abdominal wall muscles. These tumors have been ascribed to intraoperative seeding during resection of a fibroid or a leiomyoma of gut, to exogenous hormone replacement therapy or a major derangement of glucose and/or lipid metabolism. So far, there is no published report of de novo origin of anterior abdominal wall pure leiomyoma in the literature. The author herein reports a case of perimenopausal multiparous woman without any listing of previous gynecological surgery or hormone therapy who presented with a large pre-peritoneal intramuscular leiomyoma of the anterior abdominal wall. The patient underwent complete primary resection with amelioration of her symptoms.

Hallazgos oftalmológicos en pacientes con VIH/SIDA en la era pre TARGA

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Bety Yañez

2007-07-01

Full Text Available Se realizó un estudio prospectivo en 821 pacientes con diagnóstico de VIH-SIDA evaluados en la consulta externa de los servicios de Medicina Tropical y Oftalmología del Hospital Nacional Dos de Mayo (Lima, Perú como parte de la evaluación inicial para ingresar al protocolo de TARGA, entre abril de 2004 a julio de 2006. El rango de edad fue de 16- 73 años (media 36, 74% fueron varones, 114(13,9% habían recibido antirretrovirales. Más de la mitad (62% refirieron síntomas oculares, el más frecuente fue la disminución de la agudeza visual (38,4%. Se encontraron lesiones en el segmento anterior en 21,7%, queratopatía punctata superficial, microangiopatía conjuntival, conjuntivitis y cataratas fueron las más frecuentes. Se evidenciaron lesiones en el segmento posterior en 11,9% de los casos, microangiopatía vascular en 47 (5,7% y retinitis por citomegalovirus en 31 (3,8%, que fue la principal causa de ceguera en este grupo de pacientes (14/19 ojos.

Postnatal development of the anterior skull base and nasal septum: CT study

International Nuclear Information System (INIS)

Kim, Kwan Soo; Kim, Hyung Jin; Lee, Kyung Hee; Roh, Hong Gee; Lim, Myung Kwan

2002-01-01

To know the normal CT appearance of the anterior skull base and nasal septum after birth. Coronal CT scans with a helical mode were performed from the nasal bone to the sphenoid sinus in 99 children whose ages ranged from 27 days to 14 years. We investigated the CT appearance of the developing anterior skull base and nasal septum with particular attention to the anteroposterior length of the anterior skull base and the ossification patterns of the cribriform plate, perpendicular plate, crista galli, and vomer. The anteroposterior length of the anterior skull base statistically significantly increased with age. The cribriform plate showed partial or complete ossification in at least one segment at more than 3 months of age and in all three segments at more than 6 months of age. Ossification of the cribriform plate occurred earlier in the middle segment than in the anterior and posterior segments. It began exclusively in the region of the lateral mass of the ethmoid and proceeded medially toward the crista galli. Partial ossification of the perpendicular plate was noted as early as 9 months of age, and complete ossification as early as 13 months of age. All children at 18 months and older showed at least partial ossification of the perpendicular plate. Partial ossification of the crista galli was noted as early as 27 days of age, and complete ossification as early as 3 months of age. CT showed complete ossification of the crista galli in all but two children at 6 months and older. The superior aspect of the vomer exhibited a V- or Y-shape on all CT scans in 66%(65/99) of children at any age. It appeared as an undivided single lump anteriorly and a V or Y posteriorly in 34%(34/99). Knowledge of the normal developing patterns of ossification of the anterior skull base and nasal septum could help prevent errors in interpreting CT scans in this region, especially in infants and young children

Proposta de um modelo de gestão integrada da cadeia de suprimentos: aplicação no segmento de eletrodomésticos

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Reinaldo Fagundes dos Santos

2015-03-01

Full Text Available O espectro da competitividade entre as organizações manufatureiras, numa economia cada vez mais globalizada, já não se limita ao jogo de forças entre as organizações concorrentes, mas acontece de fato entre cadeias de suprimentos. Entretanto, os atuais modelos de gestão da cadeia de suprimentos não vêm cumprindo seu papel, havendo grande disparidade entre os potenciais benefícios e a prática. O presente trabalho tem como objetivo propor um modelo de SCM e seu método de implementação, visando aumentar a capacidade de resposta ao mercado consumidor das empresas manufatureiras. O modelo proposto utiliza os conceitos da Manufatura Enxuta, da Teoria das Restrições e do modelo SCOR em um ambiente de Tecnologia da Informação e Comunicação. São aplicados também os conceitos do Triple Bottom Line na busca da sustentabilidade. A avaliação de sua eficácia é feita através de uma aplicação no segmento de eletrodomésticos, permitindo sugerir a ampliação do escopo de sua utilização.

Fungal Infection of the Sinus and Anterior Skull Base

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Morteza Javadi

2008-11-01

Full Text Available   Abstract   Background: Invasive fungal infection is an opportunistic infection caused commonly   by mucoraccae and aspergillus. It mostly occurs in patients with underlying disease.   Since it has a high mortality and morbidity rate, considering a treatment strategy seems   necessary.   Objective: Since there has not been a clear protocol for treating these patients, we decided   to establish a protocol for fungal infection of sinus and anterior skull base management.   Methods: This retrospective and descriptive case study series included 30 patients.   After confirming the pathogen, the authors came to a proper protocol for treatment which   is mentioned later.   Results: The site involvement included nose and orbital cavity (53.3%, anterior skull   base and brain in conjunction with sinonasal (36.6% and simple nasal cavity involvement   (10%. 86.6% of the patients had underlying diseases. 56.6% of patients had diabetes   as a single underlying disease, while 13.3% had both diabetes and renal failure in   combination. Acute lymphocytic leukemia was present in 6.6%, renal failure in 3.3%, lupus   in 3.3% and chronic lymphocytic leukemia in 3.3% of patients. Mortality rate was   40%. We categorized the patients into 3 groups: only sinonasal, sinonasal and orbit, and   associated anterior skull base and brain involvement.   Conclusion: Early diagnosis is an important factor in improving survival. Anterior   skull base and brain involvement has a very poor prognosis.  

Endoscopic Anatomy of the Tensor Fold and Anterior Attic.

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Li, Bin; Doan, Phi; Gruhl, Robert R; Rubini, Alessia; Marchioni, Daniele; Fina, Manuela

2018-02-01

Objectives The objectives of the study were to (1) study the anatomical variations of the tensor fold and its anatomic relation with transverse crest, supratubal recess, and anterior epitympanic space and (2) explore the most appropriate endoscopic surgical approach to each type of the tensor fold variants. Study Design Cadaver dissection study. Setting Temporal bone dissection laboratory. Subjects and Methods Twenty-eight human temporal bones (26 preserved and 2 fresh) were dissected through an endoscopic transcanal approach between September 2016 and June 2017. The anatomical variations of the tensor fold, transverse crest, supratubal recess, and anterior epitympanic space were studied before and after removing ossicles. Results Three different tensor fold orientations were observed: vertical (type A, 11/28, 39.3%) with attachment to the transverse crest, oblique (type B, 13/28, 46.4%) with attachment to the anterior tegmen tympani, and horizontal (type C, 4/28, 14.3%) with attachment to the tensor tympani canal. The tensor fold was a complete membrane in 20 of 28 (71.4%) specimens, preventing direct ventilation between the supratubal recess and anterior epitympanic space. We identified 3 surgical endoscopic approaches, which allowed visualization of the tensor fold without removing the ossicles. Conclusions The orientation of the tensor fold is the determining structure that dictates the conformation and limits of the epitympanic space. We propose a classification of the tensor fold based on 3 anatomical variants. We also describe 3 different minimally invasive endoscopic approaches to identify the orientation of the tensor fold while maintaining ossicular chain continuity.

Role of the right dorsal anterior insula in the urge to tic in Tourette syndrome.

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Tinaz, Sule; Malone, Patrick; Hallett, Mark; Horovitz, Silvina G

2015-08-01

The mid-posterior part of the insula is involved in processing bodily sensations and urges and is activated during tic generation in Tourette syndrome. The dorsal anterior part of the insula, however, integrates sensory and emotional information with cognitive valuation and is implicated in interoception. The right dorsal anterior insula also participates in urge suppression in healthy subjects. This study examined the role of the right dorsal anterior insula in the urge to tic in Tourette syndrome. Resting-state functional magnetic resonance imaging was performed in 13 adult Tourette patients and 13 matched controls. The role of the right dorsal anterior insula within the urge-tic network was investigated using graph theory-based neural network analysis. The functional connectivity of the right dorsal anterior insula was also correlated with urge and tic severity. Even though the patients did not exhibit any overt tics, the right dorsal anterior insula demonstrated higher connectivity, especially with the frontostriatal nodes of the urge-tic network in patients compared with controls. The functional connectivity between the right dorsal anterior insula and bilateral supplementary motor area also correlated positively with urge severity in patients. These results suggest that the right dorsal anterior insula is part of the urge-tic network and could influence the urge- and tic-related cortico-striato-thalamic regions even during rest in Tourette syndrome. It might be responsible for heightened awareness of bodily sensations generating premonitory urges in Tourette syndrome. © 2015 International Parkinson and Movement Disorder Society.

Aplicación de técnicas de electrodeposición mediante pulsos de corriente para la obtención de recubrimientos metálicos

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Imaz Molina, Naroa

2013-01-01

En la presente tesis doctoral se han aplicado herramientas quimiométricas en el estudio y optimización de los parámetros implicados en la electrodeposición de metales y aleaciones mediante pulsos de corriente, centrando el trabajo en dos procesos determinados: • Cromo duro: con objeto de mejorar la funcionalidad y durabilidad de estos recubrimientos tan extendidos industrialmente, se ha investigado el efecto de la electrodeposición mediante pulsos de corriente...

Atenuación de la asimetría y de la curtosis de las puntuaciones observadas mediante transformaciones de variables: Incidencia sobre la estructura factorial

OpenAIRE

Miguel Ángel Ruiz Díaz; María Noel Rodríguez Ayán

2008-01-01

En este trabajo se evalúa la incidencia de la atenuación, mediante transformaciones de variables, del sesgo y de la curtosis de las puntuaciones observadas, sobre la estructura factorial, estimada mediante análisis factorial exploratorio y confirmatorio. Los datos proceden de una escala de opinión estudiantil para la evaluación de profesores universitarios, de 16 ítems medidos en escala Likert. Las distribuciones observadas no se aproximan a la normalidad, por lo que ...

Superficie específica de una bentonita mediante la adsorción de azul de metileno

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Jorge Alejo Pinzón Bello

2010-07-01

Full Text Available Se estudió la determinación de la superficie específica de una bentonita colombiana, procedente del Valle del Cauca, mediante la adsorción de azul de metileno, a 298 K. Este método se comparó con el de la adsorción de nitrógeno a 77 K.

MRI of anterior cruciate ligament autografts

International Nuclear Information System (INIS)

Ogi, Shigeyuki; Ariizumi, Mitsuko; Yamagishi, Tsuneo; Agata, Toshihiko; Tada, Shinpei; Fukuda, Kunihiko

2000-01-01

The purpose of this study was to assess the usefulness of MRI in the evaluation of autografts after anterior cruciate ligament reconstruction. The subjects were 110 patients with anterior cruciate ligament reconstruction using patellar tendon autografts who underwent clinical examination, MRI, and arthroscopy of the knee. T1- and T2-weighted MR images were obtained in sagittal plane. Clinical findings were categorized into three groups: normal, borderline, and abnormal. The MRI appearances of the autografts were categorized into three types: straight continuous band (type I), interrupted band (type II) and generalized increased intensity band (type III). The clinical findings and MRI findings were compared with arthroscopic findings. Ninety-six percent of the type I showed no autograft tear on arthroscopy. In comparison with the clinical findings, MRI was found to be well correlated with arthroscopic findings. In conclusion, if the clinical findings are normal, patients are to be followed-up without MRI and arthroscopy. However, if clinical findings are either borderline or abnormal, MRI should be performed prior to arthroscopy. (author)

Anterior stromal puncture in the treatment of bullous keratopathy

OpenAIRE

Gomes, José Alvaro Pereira; Haraguchi, Daniel Keizo de Medeiros; Zambrano, Delbis Uzcátegui; Villavicencio, Luis Izquierdo; Cunha, Marcelo C.; Freitas, Denise de

2000-01-01

Objetivo: Avaliar o efeito terapêutico das punções do estroma anterior corneal em pacientes com ceratopatia bolhosa (CB). Métodos:Vinte e cinco pacientes com CB sintomáticos, com baixa visão, com e sem indicação de transplante de córnea, foram avaliados antes, uma, 4 e 12 semanas após punções estromais anteriores realizadas com agulha #25 à lâmpada de fenda. Em cada visita, os pacientes foram questionados sobre intensidade da dor, fotofobia, sensação de corpo estranho, além de serem submetido...

Clasificación de extractos etanólicos de especies de la familia Lauraceae por cromatografía en capa fina bidimensional y análisis estadísticos multivariado CCD-2D/ PCA-cluster

OpenAIRE

William A. Delgado; Luis E. Cuca S.

2016-01-01

Se caracterizaron los extractos etanólicos de hojas y cortezas de 13 especies de la familia Lauraceae mediante cromatografía en capa fina de dos dimensiones (2D-CCD).  Los datos posteriores se analizaron mediante técnicas de análisis estadístico multivariado (cluster y análisis de componentes principales (PCA)). Lo anterior permitió hacer una distinción entre los extractos obtenidos de diferentes partes de la planta (hojas y cortezas). Se observó, además, que la metodología usada es capaz de ...

Chromium VI administration induces oxidative stress in hypothalamus and anterior pituitary gland from male rats.

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Nudler, Silvana I; Quinteros, Fernanda A; Miler, Eliana A; Cabilla, Jimena P; Ronchetti, Sonia A; Duvilanski, Beatriz H

2009-03-28

Hexavalent chromium (Cr VI)-containing compounds are known carcinogens which are present in industrial settings and in the environment. The major route of chromium exposure for the general population is oral intake. Previously we have observed that Cr VI affects anterior pituitary secretion and causes oxidative stress in vitro. The aim of the present work was to investigate if in vivo Cr VI treatment (100 ppm of Cr VI in drinking water for up 30 days) causes oxidative stress in hypothalamus and anterior pituitary gland from male rats. This treatment produced a 4-fold increase of chromium content in hypothalamus and 10-fold increase in anterior pituitary gland. Lipid peroxidation showed a significant increase in hypothalamus and anterior pituitary. Cr VI augmented superoxide dismutase activity in anterior pituitary gland and glutathione reductase activity in hypothalamus, but glutathione peroxidase and catalase activities remained unchanged in both tissues. Heme oxygenase-1 mRNA expression significantly rose in both tissues. Metallothionein 1 mRNA content increased in anterior pituitary and metallothionein 3 mRNA increased in hypothalamus. These results show, for the first time, that oral chronic administration of Cr VI produces oxidative stress on the hypothalamus and anterior pituitary gland which may affect normal endocrine function.

Wnt6 maintains anterior escort cells as an integral component of the germline stem cell niche.

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Wang, Xiaoxi; Page-McCaw, Andrea

2018-02-07

Stem cells reside in a niche, a local environment whose cellular and molecular complexity is still being elucidated. In Drosophila ovaries, germline stem cells depend on cap cells for self-renewing signals and physical attachment. Germline stem cells also contact the anterior escort cells, and here we report that anterior escort cells are absolutely required for germline stem cell maintenance. When escort cells die from impaired Wnt signaling or hid expression, the loss of anterior escort cells causes loss of germline stem cells. Anterior escort cells function as an integral niche component by promoting DE-cadherin anchorage and by transiently expressing the Dpp ligand to promote full-strength BMP signaling in germline stem cells. Anterior escort cells are maintained by Wnt6 ligands produced by cap cells; without Wnt6 signaling, anterior escort cells die leaving vacancies in the niche, leading to loss of germline stem cells. Our data identify anterior escort cells as constituents of the germline stem cell niche, maintained by a cap cell-produced Wnt6 survival signal. © 2018. Published by The Company of Biologists Ltd.

The anterior temporal lobes support residual comprehension in Wernicke's aphasia.

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Robson, Holly; Zahn, Roland; Keidel, James L; Binney, Richard J; Sage, Karen; Lambon Ralph, Matthew A

2014-03-01

Wernicke's aphasia occurs after a stroke to classical language comprehension regions in the left temporoparietal cortex. Consequently, auditory-verbal comprehension is significantly impaired in Wernicke's aphasia but the capacity to comprehend visually presented materials (written words and pictures) is partially spared. This study used functional magnetic resonance imaging to investigate the neural basis of written word and picture semantic processing in Wernicke's aphasia, with the wider aim of examining how the semantic system is altered after damage to the classical comprehension regions. Twelve participants with chronic Wernicke's aphasia and 12 control participants performed semantic animate-inanimate judgements and a visual height judgement baseline task. Whole brain and region of interest analysis in Wernicke's aphasia and control participants found that semantic judgements were underpinned by activation in the ventral and anterior temporal lobes bilaterally. The Wernicke's aphasia group displayed an 'over-activation' in comparison with control participants, indicating that anterior temporal lobe regions become increasingly influential following reduction in posterior semantic resources. Semantic processing of written words in Wernicke's aphasia was additionally supported by recruitment of the right anterior superior temporal lobe, a region previously associated with recovery from auditory-verbal comprehension impairments. Overall, the results provide support for models in which the anterior temporal lobes are crucial for multimodal semantic processing and that these regions may be accessed without support from classic posterior comprehension regions.

Predictive factors for anterior chamber fibrin formation after vitreoretinal surgery

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Leonardo Provetti Cunha

2014-04-01

Full Text Available Purpose: The aim of this study was to investigate possible predictive factors related to anterior chamber fibrin formation after vitreoretinal surgery in a large series of patients. Methods: The data of 185 eyes of 185 patients submitted to vitreoretinal surgery was reviewed. The following variables were evaluated: the postoperatively presence of fibrin, age, diabetes mellitus, the vitrectomy system gauge (20, 23 or 25 gauge, the type of vitreous substitute, the influence of prior surgical procedures and the combination with cataract extraction. To evaluate predictive factors for anterior chamber fibrin formation, univariate analysis was performed. A multivariate stepwise logistic regression model was adjusted to investigate factors associated with fibrin formation (p<0.05. Results: Fibrinoid anterior chamber reaction was found in 12 (6.4% patients. For multivariate logistic regression analysis, balanced salt solution (BSS, the chance of fibrin occurrence was 5 times greater (odds ratio 4.83, CI 95% 1.302 - 17.892; p=0.019, while combination with phacoemulsification increased the chance of fibrin formation by 20 times (odds ratio 20, CI 95% 2.480 - 161.347; p=0.005. No significant difference was found regarding other variables. Conclusion: Anterior chamber fibrin formation is an unwanted complication after vitreoretinal surgery. Factors such as combined performance of phacoemulsification and the use of balanced salt solution as a vitreous substitute may predispose the occurrence of this complication.

Extrinsic stretching narrowing and anterior indentation of the rectosigmoid junction

International Nuclear Information System (INIS)

Schulman, A.; Fataar, S.

1979-01-01

Thirty-five cases of extrinsic narrowing or anterior indentation of the rectosigmoid junction (RSJ) have been studied. The RSJ lies directly behind the pouch of Douglas which is a favoured site for peritoneal metastasis, abscess and endometriosis. Any space-occupying lesion of sufficient size at this site will indent the anterior aspects of the RSJ. Causes include distension or tumour of the ileum or sigmoid colon, gross ascites (when the patient is erect), and tumours below the pelvic peritonium, such as gynaecological neoplasm and internal iliac artery aneurysm. When a desmoplastic metastasis in the pouch of Douglas infiltrates the outer layers of the RSJ, the fibrosis produces an eccentric shortening on its anterior aspect, which in turn causes a pleating of the mucosa with the folds radiating towards the shortened area. This is also seen with primary pelvic carcinomas directly adherent to the rectum, endometriosis with repeated bleeding and increasing eccentric, submucosal fibrosis, and chronic abscess in the pouch of Douglas. Not all extrinsic narrowing of the RSJ are pathological. One case of anterior indentation followed operation for rectal prolapse. Ten additional cases showed narrowing due to a technical artefact air-distended colon rising into the upper abdomen to cause stretching at the RSJ. As with ascites, this narrowing due to 'high-rise sigmoid' disappeared when the patients became recumbent and the colonic air redistributed. (author)

Koreksi gigitan terbalik posterior dan anterior dengan alat cekat rapid maxillary expansion dan elastik intermaksila

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Retno Dewati

2014-06-01

Full Text Available Background: Children with anterior and posterior crossbite usually have a complaint in aesthetic and masticatory function. It could caused by bad habits and hereditary factors which made worse condition. Purpose: The purpose of this case report was to report the use of orthodontic appliance rapid maxillary expansion (RPE and intermaxillary elastic to correct posterior and anterior crossbite in teenage patient. Case: A fourteen years-old teenage female patient came to Dental Hospital Dentistry Universitas Airlangga with case of anterior posterior cross bite and unerupted permanent teeth. Case management: The case was treated using orthodontic fixed appliance rapid maxillary expansion (RPE and followed by intermaxillary elastics. The posterior cross bite treatment took 4 weeks used of orthodontic fixed appliance RPE, while, treatment of anterior cross bite which used intermaxillary elactic was done within three month to achieved normal occlusion. Conclusion: This case report showed that the orthodontic appliance rapid maxillary expansion (RPE and intermaxillary elastic could be used to correct posterior and anterior crossbite.Latar belakang: Anak dengan gigitan terbalik anterior dan posterior pada umumnya mempunyai keluhan dalam hal estetik dan fungsi pengunyahan. Kondisi gigitan terbalik biasanya disebabkan oleh adanya kebiasaan buruk dan faktor keturunan yang semakin memperparah keadaan tersebut. Tujuan: Laporan kasus ini melaporkan pemakaian alat cekat rapid maxillary expansion (RPE dan elastik intermaksila untuk mengkoreksi gigitan terbalik posterior dan anterior pada anak remaja. Kasus: Pasien remaja perempuan berusia 14 tahun datang ke Rumah Sakit Gigi dan Mulut Fakultas Kedokteran Gigi Universitas Airlangga Surabaya dengan kasus gigitan terbalik anterior posterior dan terdapat gigi permanen yang tidak tumbuh. Tatalaksana kasus: Perawatan yang dilakukan adalah koreksi gigitan terbalik dengan menggunakan alat ortodonsia cekat rapid maxillary

Assessment of the anterior loop of mental nerve in an Iranian population using cone beam computed tomography scan

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Mitra Karbasi Kheir

2017-01-01

Conclusion: Great care is required when placing implants in proximity to mental foramen to avoid anterior loop injury. Because of the variations of anterior loop length in each patient, a fixed distance anterior to the mental foramen is not safe, and the anterior loop length should be determined for each individual. The use of CBCT provides accurate measurements of the length of anterior loop.