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Sample records for endoscopic face lift

  1. Face-Lift

    Science.gov (United States)

    ... several weeks. Keeping your head elevated and applying cold compresses can help. Plan to have your surgery at least 6 weeks before any important social events. Changes in skin sensation. During a face-lift, the repositioning of your ...

  2. Vertical vector face lift.

    Science.gov (United States)

    Somoano, Brian; Chan, Joanna; Morganroth, Greg

    2011-01-01

    Facial rejuvenation using local anesthesia has evolved in the past decade as a safer option for patients seeking fewer complications and minimal downtime. Mini- and short-scar face lifts using more conservative incision lengths and extent of undermining can be effective in the younger patient with lower face laxity and minimal loose, elastotic neck skin. By incorporating both an anterior and posterior approach and using an incision length between the mini and more traditional face lift, the Vertical Vector Face Lift can achieve longer-lasting and natural results with lesser cost and risk. Submentoplasty and liposuction of the neck and jawline, fundamental components of the vertical vector face lift, act synergistically with superficial musculoaponeurotic system plication to reestablish a more youthful, sculpted cervicomental angle, even in patients with prominent jowls. Dramatic results can be achieved in the right patient by combining with other procedures such as injectable fillers, chin implants, laser resurfacing, or upper and lower blepharoplasties. © 2011 Wiley Periodicals, Inc.

  3. An endoscopic brow lift that does not raise the hairline.

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    Hamas, R S

    1997-01-01

    Open brow lifts with long coronal or pre-hairline incisions are increasingly being replaced by endoscopic procedures. Unfortunately, hairline elevation has been a consequence of these new techniques. The GAP brow lift method features very inconspicuous incisions and vertical vectors of pull, and does not raise the hairline. This improves patient satisfaction with brow lifting.

  4. Face-Lift Satisfaction Using the FACE-Q.

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    Sinno, Sammy; Schwitzer, Jonathan; Anzai, Lavinia; Thorne, Charles H

    2015-08-01

    Face lifting is one of the most common operative procedures for facial aging and perhaps the procedure most synonymous with plastic surgery in the minds of the lay public, but no verifiable documentation of patient satisfaction exists in the literature. This study is the first to examine face-lift outcomes and patient satisfaction using a validated questionnaire. One hundred five patients undergoing a face lift performed by the senior author (C.H.T.) using a high, extended-superficial musculoaponeurotic system with submental platysma approximation technique were asked to complete anonymously the FACE-Q by e-mail. FACE-Q scores were assessed for each domain (range, 0 to 100), with higher scores indicating greater satisfaction with appearance or superior quality of life. Fifty-three patients completed the FACE-Q (50.5 percent response rate). Patients demonstrated high satisfaction with facial appearance (mean ± SD, 80.7 ± 22.3), and quality of life, including social confidence (90.4 ± 16.6), psychological well-being (92.8 ± 14.3), and early life impact (92.2 ± 16.4). Patients also reported extremely high satisfaction with their decision to undergo face lifting (90.5 ± 15.9). On average, patients felt they appeared 6.9 years younger than their actual age. Patients were most satisfied with the appearance of their nasolabial folds (86.2 ± 18.5), cheeks (86.1 ± 25.4), and lower face/jawline (86.0 ± 20.6), compared with their necks (78.1 ± 25.6) and area under the chin (67.9 ± 32.3). Patients who responded in this study were extremely satisfied with their decision to undergo face lifting and the outcomes and quality of life following the procedure.

  5. Outcome analysis in 93 facial rejuvenation patients treated with a deep-plane face lift.

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    Swanson, Eric

    2011-02-01

    This prospective study assessed outcomes in patients undergoing a deep-plane face lift and other simultaneous facial cosmetic procedures. It is the first prospective outcome study to assess and compare these patients and provide data on patient satisfaction and quality of life—the most important determinants of surgical success. From 2002 to 2007, in-person interviews were conducted with 93 patients who attended a follow-up appointment at least 1 month after surgery from a total of 122 consecutive patients treated with a deep-plane face lift and other facial rejuvenation procedures (response rate, 76 percent). Questions were asked in six categories: patient data, indications, recovery, results, complications, and psychological effects. Responses were analyzed in four groups: face lift alone; face lift and blepharoplasties; face lift and forehead lift; and face lift, blepharoplasties, and endoscopic forehead lift. The average subjective reduction in apparent age was 11.9 years (range, 0 to 27.5 years). Seventy-seven patients (82.8 percent) reported an improvement in self-esteem, and 64 patients (69.6 percent) reported an improved quality of life. There was no significant correlation between result rating and procedure groups, age, gender, smoking history, previous face lift, body mass index, or the occurrence of a complication. Despite a significant recovery period, patient satisfaction was high, with 96.7 percent of patients reporting a more youthful appearance after surgery. Scar dissatisfaction was rare (2.2 percent). With proper patient preparation and education, facial rejuvenation effectively meets patient expectations. These findings support the recommendation of surgical facial rejuvenation to patients who wish to look younger.

  6. Use of prototype two-channel endoscope with elevator enables larger lift-and-snare endoscopic mucosal resection in a porcine model.

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    Atkinson, Matthew; Chukwumah, Chike; Marks, Jeffrey; Chak, Amitabh

    2014-02-01

    Flat and depressed lesions are becoming increasingly recognized in the esophagus, stomach, and colon. Various techniques have been described for endoscopic mucosal resection (EMR) of these lesions. To evaluate the efficacy of lift-grasp-cut EMR using a prototype dual-channel forward-viewing endoscope with an instrument elevator in one accessory channel (dual-channel elevator scope) as compared to standard dual-channel endoscopes. EMR was performed using a lift-grasp-cut technique on normal flat rectosigmoid or gastric mucosa in live porcine models after submucosal injection of 4 mL of saline using a dual-channel elevator scope or a standard dual-channel endoscope. With the dual-channel elevator scope, the elevator was used to attain further lifting of the mucosa. The primary endpoint was size of the EMR specimen and the secondary endpoint was number of complications. Twelve experiments were performed (six gastric and six colonic). Mean specimen diameter was 2.27 cm with the dual-channel elevator scope and 1.34 cm with the dual-channel endoscope (P = 0.018). Two colonic perforations occurred with the dual-channel endoscope, vs no complications with the dual-channel elevator scope. The increased lift of the mucosal epithelium, through use of the dual-channel elevator scope, allows for larger EMR when using a lift-grasp-cut technique. Noting the thin nature of the porcine colonic wall, use of the elevator may also make this technique safer.

  7. The Effect of Midline Corset Platysmaplasty on Degree of Face-lift Flap Elevation During Concomitant Deep-Plane Face-lift: A Cadaveric Study.

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    Jacono, Andrew A; Malone, Melanie H

    2016-05-01

    The evaluation of the effects of midline platysmaplasty concomitant with rhytidectomy. To determine whether midline platysmaplasty limits the degree of lift during deep-plane face-lift. Deep-plane rhytidectomy was performed on 10 cadaveric hemifaces. The redundant skin for excision after performing the face-lift was measured with and without midline platymaplasty. Deep-plane rhytidectomy. The redundant skin was measured preauricularly in the vertical and horizontal dimension, and postauricularly after deep-plane face-lift and after adding a midline platysmaplasty. Concomitant midline platysmaplasty significantly reduced the amount of lift during concomitant deep-plane rhytidectomy preauricularly in the vertical dimension by 40.5% (from 37.0 mm excess skin redraped to 22.0 mm) and postauricularly by 23.9% (from 40.6 mm excess skin redraped to 30.9 mm) (P jawline and midface during rhytidectomy. NA.

  8. Temple and Postauricular Dissection in Face and Neck Lift Surgery

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    Joo Heon Lee

    2017-07-01

    Full Text Available Periauricular paresthesia may afflict patients for a significant amount of time after facelift surgery. When performing face and neck lift surgery, temple and posterior auricular flap dissection is undertaken directly over the auriculotemporal, great auricular, and lesser occipital nerve territory, leading to potential damage to the nerve. The auriculotemporal nerve remains under the thin outer superficial fascia just below the subfollicular level in the prehelical area. To prevent damage to the auriculotemporal nerve and to protect the temporal hair follicle, the dissection plane should be kept just above the thin fascia covering the auriculotemporal nerve. Around the McKinney point, the adipose tissue covering the deep fascia is apt to be elevated from the deep fascia due to its denser fascial relationship with the skin, which leaves the great auricular nerve open to exposure. In order to prevent damage to the posterior branches of the great auricular nerve, the skin flap at the posterior auricular sulcus should be elevated above the auricularis posterior muscle. Fixating the superficial muscular aponeurotic system flap deeper and higher to the tympano-parotid fascia is recommended in order to avoid compromising the lobular branch of the great auricular nerve. The lesser occipital nerve (C2, C3 travels superficially at a proximal and variable level that makes it vulnerable to compromise in the mastoid dissection. Leaving the adipose tissue at the level of the deep fascia puts the branches of the great auricular nerve and lesser occipital nerve at less risk, and has been confirmed not to compromise either tissue perfusion or hair follicles.

  9. Different levels of undermining in face lift - Experience of 141 consecutive cases

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    Panettiere Pietro

    2004-01-01

    Full Text Available CONTEXT: The most revolutionary concept in rhytidectomy is the role of Sub Muscular Aponeurotic System (SMAS, even if many alternative approaches have been proposed. The main aim of face lift is to bring back the time, preventing the "lifted-face" appearance. SETTINGS AND DESIGN: The authors present their personal experience with different levels of undermining, i.e. subperiosteal forehead lift, subcutaneous midface lift with SMAS plication and platysmal suspension, and discuss the anatomical and biomechanical elements of rhytidectomy. RESULTS: Optimal aesthetic results were achieved by repositioning the neck, face and forehead tissues in a global and harmonious fashion, without distorting face characteristics and disguising surgery trails as much as possible. CONCLUSIONS: Different levels of undermining can give good and stable aesthetic results minimizing the risks and preventing face distortion.

  10. Effect of endoscopic brow lift on contractures and synkinesis of the facial muscles in patients with a regenerated postparalytic facial nerve syndrome.

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    Bran, Gregor M; Börjesson, Pontus K E; Boahene, Kofi D; Gosepath, Jan; Lohuis, Peter J F M

    2014-01-01

    Delayed recovery after facial palsy results in aberrant nerve regeneration with symptomatic movement disorders, summarized as the postparalytic facial nerve syndrome. The authors present an alternative surgical approach for improvement of periocular movement disorders in patients with postparalytic facial nerve syndrome. The authors proposed that endoscopic brow lift leads to an improvement of periocular movement disorders by reducing pathologically raised levels of afferent input. Eleven patients (seven women and four men) with a mean age of 54 years (range, 33 to 85 years) and with postparalytic facial nerve syndrome underwent endoscopic brow lift under general anesthesia. Patients' preoperative condition was compared with their postoperative condition using a retrospective questionnaire. Subjects were also asked to compare the therapeutic effectiveness of endoscopic brow lift and botulinum toxin type A. Mean follow-up was 52 months (range, 22 to 83 months). No intraoperative or postoperative complications occurred. During follow-up, patients and physicians observed an improvement of periorbital contractures and oculofacial synkinesis. Scores on quality of life improved significantly after endoscopic brow lift. Best results were obtained when botulinum toxin type A was adjoined after the endoscopic brow lift. Patients described a cumulative therapeutic effect. These findings suggest endoscopic brow lift as a promising additional treatment modality for the treatment of periocular postparalytic facial nerve syndrome-related symptoms, leading to an improved quality of life. Even though further prospective investigation is needed, a combination of endoscopic brow lift and postsurgical botulinum toxin type A administration could become a new therapeutic standard.

  11. Association of Face-lift Surgery With Social Perception, Age, Attractiveness, Health, and Success.

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    Nellis, Jason C; Ishii, Masaru; Papel, Ira D; Kontis, Theda C; Byrne, Patrick J; Boahene, Kofi D O; Bater, Kristin L; Ishii, Lisa E

    2017-07-01

    Evidence quantifying the influence of face-lift surgery on societal perceptions is lacking. To measure the association of face-lift surgery with observer-graded perceived age, attractiveness, success, and overall health. In a web-based survey, 526 casual observers naive to the purpose of the study viewed independent images of 13 unique female patient faces before or after face-lift surgery from January 1, 2016, through June 30, 2016. The Delphi method was used to select standardized patient images confirming appropriate patient candidacy and overall surgical effect. Observers estimated age and rated the attractiveness, perceived success, and perceived overall health for each patient image. Facial perception questions were answered on a visual analog scale from 0 to 100, with higher scores corresponding to more positive responses. To evaluate the accuracy of observer age estimation, the patients' preoperative estimated mean age was compared with the patients' actual mean age. A multivariate mixed-effects regression model was used to determine the effect of face-lift surgery. To further characterize the effect of face-lift surgery, estimated ordinal-rank change was calculated for each domain. Blinded casual observer ratings of patients estimated age, attractiveness, perceived success, and perceived overall health. A total of 483 observers (mean [SD] age, 29 [8.6] years; 382 women [79.4%]) successfully completed the survey. Comparing patients' preoperative estimated mean (SD) age (59.6 [9.0] years) and patients' actual mean (SD) age (58.4 [6.9] years) revealed no significant difference (t2662 = -0.47; 95% CI, -6.07 to 3.72; P = .64). On multivariate regression, patients after face-lift surgery were rated as significantly younger (coefficient, -3.69; 95% CI -4.15 to -3.23; P observer perceptions of face-lift surgery were associated with views that patients appeared younger, more attractive, healthier, and more successful. These findings highlight observer

  12. Techniques for creating inconspicuous face-lift scars: avoiding visible incisions and loss of temporal hair.

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    Kridel, Russell W H; Liu, Edmund S

    2003-01-01

    Patients seeking rhytidectomy desire an improved neckline, jawline, and midface, but rarely at the price of signs that betray a face-lift, namely, visible incisions. We describe our face-lift incisional planning and the rationale behind specific surgical maneuvers for preventing unwanted sequelae. The telltale signs of poorly placed incisions include temporal hair loss, conspicuous scars, an unnatural appearance to the tragus, and a posterior hairline distorsion. Special considerations are given to the male patient and to the salvage of readily visible incision lines from previous surgery.

  13. The lower muscular balance of the face used to lift labial commissures.

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    Marinetti, C J

    1999-09-01

    One of the weak points in face lifts is their failure to fully correct the ptosis of the labial commissures. This article illustrates a new technique to optimize this commissural repositioning in face lifts by using the muscular balances of the lower half of the face. There is, in effect, a third type of muscular balance, which acts on the commissural modiolus and is created by the opposing forces of the levator muscles (notably the zygomaticus major and the levator anguli oris) and the depressor muscles (principally the depressor anguli oris). Rarely a purely cutaneous problem, labial commissural ptosis is more a part of mediofacial ptosis affecting the entire soft tissue. I have used the malar subperiosteal face lift technique, the only approach that allows the centrofacial features to be lifted as a whole block, since late 1996 and have treated a series of more than 30 patients affected with mediofacial ptoses involving the malar eminences, the nasolabial folds, and the labial commissures. Retensioning the levator muscles was combined with wholesale subperiosteal release of the depressor muscles, notably the depressor anguli oris. Patient follow-up has lasted between 6 and 20 months. In all instances, this use of the lower facial muscular balances allowed optimal repositioning of the labial commissure. In particularly outstanding cases, unilateral release of the depressor muscles was used to correct facial asymmetry at the level of the lip commissures and thereby restore harmony and alignment. In 10 of our cases, this slackening of the depressor muscles was also used in conjunction with a peripheral face lift; the resulting heightening of the commissures was, in these cases, perhaps less spectacular, but it invariably contributed to the rejuvenation of the face.

  14. A Novel Technique of Supra Superficial Musculoaponeurotic System Hyaluronic Acid Injection for Lower Face Lifting

    OpenAIRE

    Sahawatwong, Sinijchaya; Sirithanabadeekul, Punyaphat; Patanajareet, Vasiyapha; Wattanakrai, Penpun; Thanasarnaksorn, Wilai

    2016-01-01

    Background: Various methods attempting to correct sagging of the lower face focus mainly on manipulation of the superficial musculoaponeurotic System. Each technique has its own limitation. The authors propose a relatively simple, conservative method utilizing hyaluronic acid injection just above the superficial musculoaponeurotic System. Objective: To address a novel hyaluronic injection technique to lift the lower face. Methods: Details of the injection techniques are described. The Positio...

  15. Use of the harmonic blade in face lifting: a report based on 420 operations.

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    Firmin, Francoise O; Marchac, Alexandre C; Lotz, Nicholas C

    2009-07-01

    An important concern for patients who undergo a face lift is the recovery time. Use of the Harmonic blade (Ethicon Endo-Surgery, Cincinnati, Ohio) for surgical dissection and hemostasis in face lift has improved recovery time and greatly reduced the risk of hematomas in the senior author's practice. A retrospective study evaluated the complication rate using the Harmonic blade in face and neck lifting (n = 420) between 2001 and 2007. A prospective study was conducted on 100 cases (October of 2006 to May of 2008) to evaluate the mean operative time, drainage, and recovery time. Results at day 8 were evaluated using on a scale of 1 to 4 (1 = nil tracking to 4 = marked tracking). The complication rate in 420 cases was low and decreased with experience. Complications included hematoma (n = 5), temporary facial paresis (n = 4), submental lipolysis (n = 3), skin perforation (n = 1), minor skin burn (n = 1), skin necrosis (n = 0), and hair loss (n = 0). Mean operative time for face lift with a superficial musculoaponeurotic system procedure and anterior platysmaplasty was 180 minutes (range, 140 to 210 minutes). Drainage at day 1 was 20 cc (range, 0 to 30 cc). Average return to normal social life was by day 8 (range, 5 to 20 days). Results at day 8 were graded 1 for edema and ecchymosis. The beneficial effects of the Harmonic blade are obvious objectively and subjectively to both the surgeon and the patients. Understanding the key technical details involved with its use will improve the learning curve for the surgeon as this technology becomes an asset in face lifting.

  16. Reduction Malarplasty With Face-Lift for Older Asians With Prominent Zygoma.

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    Zou, Chong; Wang, Jia-Qi; Liu, Jian-Feng; Niu, Feng; Chen, Ying; Wang, Meng; Gui, Lai

    2016-08-01

    In Asian culture, overly prominent zygomas are undesirable because they give a masculine and severe appearance. Thus, reduction malarplasty is now becoming one of the most popular procedures among Asian women. However, older patients present sagging facial soft tissue and have high incidence of cheek descent after surgery. To overcome these issues and achieve better cosmetic surgical outcomes, we performed a reduction malarplasty combined with a face-lift to achieve an oval and youthful midface. It was a retrospective observational study of 22 older Asian women who complained of prominent zygoma and aged midface. All of them had undergone reduction malarplasty combined with cheek-lift. Clinical results were assessed with photographs and patient satisfactory rates. The L-shaped reduction malarplasty with face-lift was performed successfully in all cases. All of the patients recover successfully without major complications. Malar prominence and midface aging was improved, and the natural midface contour was preserved. One hundred percent of the patients thought that the shape of their midface had improved, and 95.5% were satisfied with the rejuvenation of midface. The reduction malarplasty combined with face-lift effectively addressed the malar prominence and midface aging issues simultaneously. Therefore, this can be a useful technique to restore the youthful and proportionate facial relationships in older Asian patients.

  17. La técnica "Face up": lifting facial mini-invasivo con hilos tensores The Face up technique: minimally invasive facial lifting with tensor threads

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    M. Flórez Méndez

    2008-03-01

    Full Text Available Presentamos una técnica personal que hemos denominado "Face Up", empleando suturas de poliéster dispuestas a través de incisiones mínimas, que permite lograr un rápido efecto lifting para el rejuvenecimiento de la cara. Nuestra experiencia se basa en los resultados del tratamiento de 600 pacientes intervenidos entre septiembre de 2002 y marzo de 2006. Los resultados fueron evidentes desde el postoperatorio inmediato. Las zonas tratadas quedaron firmemente ligadas al plano de anclaje dentro del cuero cabelludo. Se trataron frente, sienes, cejas, mejillas, pómulos, cuello y regiones paramaxilares adyacentes a la zona de los músculos maseteros y bucinadores, que ceden por efecto de la gravedad y del envejecimiento. En las zonas seleccionadas, las suturas se deslizan a través del tejido subcutáneo, donde la aponeurosis de los músculos implicados está firmemente ligada a este plano. Para la intervención se emplea una aguja, llamada "Demax" (aguja biselada con punta en los dos extremos provista de un orificio en uno de ellos para arrastrar la sutura que se inserta desde la región cefálica temporal hasta el punto distal de la zona de la ptosis, donde se efectúa un cambio de sentido formando un bucle que produce el segundo anclaje del tejido, evitando su desplazamiento. La sutura retorna al punto de entrada para su anudamiento al periostio a fin de conseguir y mantener el levantamiento. Las complicaciones recogidas fueron hematomas leves, equímosis, edema, e infección localizada en la incisión de ingreso y nudo de la sutura. En las evaluaciones efectuadas a corto y largo plazo, los resultados fueron buenos con un índice de satisfacción alto por parte de las pacientes y del médico. La técnica "Face Up" es mínimamente traumática y aporta una alternativa al lifting quirúrgico tradicional para el tratamiento del envejecimiento y de la flacidez faciales.We present a personal technique called "Face Up", using polyester sutures

  18. Lower face lifting and contouring with a novel internal real-time thermosensing monopolar radiofrequency.

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    Kim, Eun Jin; Kwon, Hyoung Il; Yeo, Un Cheol; Ko, Joo Yeon

    2016-09-01

    As demand for a youthful appearance has increased, various techniques for face lifting and contouring have been used to reduce excess fat deposition and improve skin laxity. Recently, radiofrequency (RF)-assisted lipolysis and liposuction (RFAL) has been introduced for body and face contouring. This study aimed to evaluate the clinical improvement and safety of a new RFAL device for face lifting and contouring. A prospective study was conducted in 20 Korean patients who underwent an internal real-time thermosensing monopolar RFAL procedure. Prior to treatment and 12 and 24 weeks after treatment, digital photographs were taken, and the degree of improvement as measured by investigators and patients was recorded. Skin elasticity was measured using a Cutometer (CT575, Courage and Khazaka®, Cologne, Germany). Safety profiles were also evaluated at each visit. Results showed favorable improvement in skin laxity and fat deposition. Both investigators' evaluations and patients' evaluation showed significant improvement between 12 and 24 weeks. Although the changes in skin elasticity measured by the Cutometer were not statistically significant, all three treated regions showed a trend toward improvement. No major side effects such as infection or burn were observed. The internal, real-time thermosensing monopolar RFAL device showed clinical efficacy and safety. After further studies with more patients and longer follow-up periods, internal real-time thermosensing monopolar RF devices might become one of the popular treatment options for face lifting and contouring.

  19. Malar augmentation assessed by magnetic resonance imaging in patients after face lift and fat injection.

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    Swanson, Eric

    2011-05-01

    Restoration of cheek volume is recognized as an important part of facial rejuvenation. However, there are no previous studies that have determined whether any soft-tissue technique is effective for achieving lasting malar augmentation. This study prospectively evaluated a subset of five patients who had deep-plane face lifts with fat injection, and other facial cosmetic procedures. The mean volumes of fat injected were 9.1 cc (range, 4 to 12 cc) into the right cheek and 8.5 cc (range, 4 to 11.5 cc) into the left cheek. Magnetic resonance imaging scans were obtained before surgery and at intervals after surgery up to 6 months (and 1 year in one patient) for a total of 22 studies. Axial, coronal, and sagittal images, T1- and T2-weighted, were obtained. Thickness of the malar fat pads was measured. Malar thicknesses showed significant increases at the time of the 1-month follow-up appointments (p lift surgery produces an increase in malar volume that is still present up to 6 months after surgery. This study confirms the rationale for injecting fat at the time of face-lift surgery.

  20. Minimal incisions vertical endoscopic lifting and fat grafting as a systematic approach to the rejuvenation of the periocular esthetic unit.

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    Bernardini, Francesco P; Gennai, Alessandro; Izzo, Luigi; Devoto, Martin H

    2013-01-01

    The forehead/brow complex, the temporal region, the upper eyelid, the zygomatic area, the lower eyelid, and the cheek comprise the periocular esthetic unit. The combination of variable degrees of tissue descent and fat deflation of the component parts of the unit determine its appearance with age. The authors report the results of tissue repositioning through a minimal incisions vertical endoscopic lift and volume restoration used in combination to restore the natural youthful appearance of the periocular esthetic unit. The authors retrospectively reviewed the charts of patients who underwent minimal incisions vertical endoscopic lift and fat grafting over a 12-year period in 3 different centers. Patients results were evaluated with standardized pre- and postoperative pictures graded by masked observers in a scale from poor, fair, satisfactory, to very satisfactory results. Patient satisfaction was self-graded in the same manner. The study consists of 400 patients, of whom 337 (85%) were women and 63 (14.8%) were men, with a mean age of 46 years (range 38-67) for women and mean age of 53 years (range 48-65) for men. Mean follow up was 16 months (range 6 months-8 years); in 180 patients follow up was 2 years or longer. Additional procedures included lower blepharoplasty in 205 patients (51%), neck lift in 102 patients (26%), upper blepharoplasty in 63 patients (15.7%), lateral canthoplasty in 9 patients (2.3%), and upper eyelid ptosis in 6 patients (1.5%). The results were graded as satisfactory or very satisfactory by 95% of patients and by 91% of observers. On the basis of the anatomical changes that occur in the periocular esthetic unit, tissue repositioning is indicated to address the descent of the superior complex and in minor part of the inferior complex, while volume restoration is indicated to address the volume depletion of the inferior and the lateral complexes and for refinements of the superior complex. The authors propose a systematic combination of

  1. Periauricular Keloids on Face-Lift Scars in a Patient with Facial Nerve Paralysis

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    Masayo Aoki, MD, PhD

    2017-07-01

    Full Text Available Summary:. Keloids are caused by excessive scar formation that leads to scar growth beyond the initial scar boundaries. Keloid formation and progression is promoted by mechanical stress such as skin stretch force. Consequently, keloids rarely occur in paralyzed areas and areas with little skin tension, such as the periauricular region. Therefore, periauricular incision is commonly performed for face lifts. We report a rare case of keloids that arose from face-lift scars in a patient with bilateral facial nerve paralysis. A 51-year-old Japanese man presented with abnormal proliferative skin masses in bilateral periauricular scars. Seventeen years before, he had a cerebral infarction that resulted in permanent bilateral facial nerve paralysis. Three years before presentation, the patient underwent face-lift surgery with periauricular incisions. We diagnosed multiple keloids. We removed the masses surgically, closed the wounds with sutures in the superficial musculoaponeurotic system layer to reduce tension on the wound edges, reconstructed the earlobes with local skin flaps, and provided 2 consecutive days of radiotherapy. The wounds/scars were managed with steroid plasters and injections. Histology confirmed that the lesions were keloids. Ten months after surgery, the lesions did not exhibit marked regrowth. The keloids appeared to be caused by the patient's helmet, worn during his 3-hour daily motorcycle rides, which placed repeated tension on the periauricular area. This rare case illustrates how physical force contributes to auricular and periauricular keloid development and progression. It also shows that when performing surgery with periauricular incisions, care should be taken to eliminate wound/scar stretching.

  2. Intra-parotid dermoid cyst: excision through a face lift incision.

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    Shakeel, M; Keh, S M; Chapman, A; Hussain, A

    2014-11-01

    Intra-parotid dermoid cysts are extremely rare. Clinically, they present like any other parotid lump and pre-operative diagnosis is rarely possible. A 62 years old Caucasian man presented with a painless lump in his right parotid region. The Magnetic Resonance Imaging (MRI) scan revealed a 3 x 3 cm mass in the parotid tail. Cytological examination was unhelpful. The patient underwent successful excision of the cyst through a small face lift incision. No drain was inserted and the patient was discharged home the same day. The patient made an uneventful recovery and was highly satisfied with the aesthetic outcome. The definite histopathological diagnosis was an intra-parotid dermoid cyst.

  3. Association of Patient Self-esteem With Perceived Outcome After Face-lift Surgery.

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    Jacono, Andrew; Chastant, Ryan P; Dibelius, Greg

    2016-01-01

    determine the quality-of-life outcome after surgery. Patients with low preoperative self-esteem saw an increase in self-esteem after surgery, those with average preoperative self-esteem experienced no change, and those with high preoperative self-esteem experienced a decrease in self-esteem after surgery. In our study, self-esteem measurements did not correlate directly with the positive effect of the surgical outcome, as patients showed no mean change in self-esteem, but patients thought that they appeared a mean of 8.9 years younger after their face-lift surgery. These findings underscore the complex nature of the human psyche as it relates to aesthetic surgery and demonstrates that patients exhibit a wide spectrum of psychological reactions after face-lift surgery. 2.

  4. Restoring facial shape in face lifting: the role of skeletal support in facial analysis and midface soft-tissue repositioning.

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    Stuzin, James M

    2007-01-01

    Aesthetic analysis in facial rejuvenation has traditionally been subordinate to technical solutions. While concerns regarding correction of facial laxity, a reduction in the depth of the nasolabial fold, and improvement of both the jowl and the jawline are worthy goals in rhytidectomy, the aesthetic concept of restoring facial shape to a more youthful appearance is equally important. Restoring facial shape in face lifting requires an understanding of how the face ages and then the formulation of a treatment plan that is individualized for the patient. Re-establishment of facial contour is significantly influenced by the re-elevation of descended facial fat through superficial musculoaponeurotic system manipulation; it can be approached through a variety of technical solutions. Underlying skeletal support affects not only the appearance of the face in youth but also how the face ages and influences the operative plan in terms of the requirements for fat repositioning. Formulating a treatment plan that is patient specific and based on the artistic goals as influenced by skeletal support is the key element for consistency in restoring facial shape in face lifting.

  5. Measuring outcomes that matter to face-lift patients: development and validation of FACE-Q appearance appraisal scales and adverse effects checklist for the lower face and neck.

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    Klassen, Anne F; Cano, Stefan J; Scott, Amie M; Pusic, Andrea L

    2014-01-01

    The FACE-Q is a new patient-reported outcome instrument to evaluate a range of outcomes for patients undergoing any type of facial cosmetic operation, minimally invasive cosmetic procedure, or facial injectable. This article describes the development and validation of FACE-Q scales relevant to face-lift patients. The FACE-Q was developed by following international guidelines for patient-reported outcome instrument development. For outcomes following a face lift, the authors developed five appearance appraisal scales (i.e., Satisfaction with Cheeks, Satisfaction with Lower Face and Jawline, Appraisal of Nasolabial Folds, Appraisal of Area Under the Chin, and Appraisal of the Neck) and an adverse effects checklist. A field test of these scales was performed in a sample of 225 face-lift patients, and were evaluated using both modern and traditional psychometric methods. The five FACE-Q appearance appraisal scales were found to be clinically meaningful, reliable, valid, and responsive to clinical change. These findings were supported by Rasch measurement theory analysis (e.g., overall chi-square values of p ≥ 0.18; Person Separation Index ≥ 0.88). Responsiveness analyses showed that patient scores for facial appearance improved significantly after treatment (p < 0.001); changes in scores were associated with moderate effect sizes (range effect size, 0.40 to 0.79; range standardized response mean, 0.37 to 0.69). Traditional psychometric statistics provided further support (e.g., Cronbach's alpha values ≥ 0.94) CONCLUSIONS:: The FACE-Q appearance appraisal scales are scientifically sound and clinically meaningful and can be used with the adverse effects checklist to measure patient-reported outcomes following a face lift.

  6. Limited vs extended face-lift techniques: objective analysis of intraoperative results.

    Science.gov (United States)

    Litner, Jason A; Adamson, Peter A

    2006-01-01

    To compare the intraoperative outcomes of superficial musculoaponeurotic system plication, imbrication, and deep-plane rhytidectomy techniques. Thirty-two patients undergoing primary deep-plane rhytidectomy participated. Each hemiface in all patients was submitted sequentially to 3 progressively more extensive lifts, while other variables were standardized. Four major outcome measures were studied, including the extent of skin redundancy and the repositioning of soft tissues along the malar, mandibular, and cervical vectors of lift. The amount of skin excess was measured without tension from the free edge to a point over the intertragal incisure, along a plane overlying the jawline. Using a soft tissue caliper, repositioning was examined by measurement of preintervention and immediate postintervention distances from dependent points to fixed anthropometric reference points. The mean skin excesses were 10.4, 12.8, and 19.4 mm for the plication, imbrication, and deep-plane lifts, respectively. The greatest absolute soft tissue repositioning was noted along the jawline, with the least in the midface. Analysis revealed significant differences from baseline and between lift types for each of the studied techniques in each of the variables tested. These data support the use of the deep-plane rhytidectomy technique to achieve a superior intraoperative lift relative to comparator techniques.

  7. Correction of motion artifacts in endoscopic optical coherence tomography and autofluorescence images based on azimuthal en face image registration

    Science.gov (United States)

    Abouei, Elham; Lee, Anthony M. D.; Pahlevaninezhad, Hamid; Hohert, Geoffrey; Cua, Michelle; Lane, Pierre; Lam, Stephen; MacAulay, Calum

    2018-01-01

    We present a method for the correction of motion artifacts present in two- and three-dimensional in vivo endoscopic images produced by rotary-pullback catheters. This method can correct for cardiac/breathing-based motion artifacts and catheter-based motion artifacts such as nonuniform rotational distortion (NURD). This method assumes that en face tissue imaging contains slowly varying structures that are roughly parallel to the pullback axis. The method reduces motion artifacts using a dynamic time warping solution through a cost matrix that measures similarities between adjacent frames in en face images. We optimize and demonstrate the suitability of this method using a real and simulated NURD phantom and in vivo endoscopic pulmonary optical coherence tomography and autofluorescence images. Qualitative and quantitative evaluations of the method show an enhancement of the image quality.

  8. Treatment outcomes of implants performed after regenerative treatment of absorbed alveolar bone due to the severe periodontal disease and endoscopic surgery for maxillary sinus lift without bone grafts.

    Science.gov (United States)

    Kiyokawa, Kensuke; Rikimaru, Hideaki; Kiyokawa, Munekatsu; Fukaya, Hajime; Sakaguchi, Shinji

    2013-09-01

    We have developed a regenerative medicine therapy for the alveolar bone and endoscopic surgery for maxillary sinus lift without bone grafts, in patients experiencing severe periodontal disease with significant absorption of the maxillary alveolar bone, in which more than 10 mm of bone thickness in the maxillary bone was attained, with satisfactory results. The objective of this study was to examine the treatment outcomes of implants that were performed after these therapies. The participants were 36 patients with severe periodontal disease, who cannot be cured with any other treatments except the extirpation of all teeth. The 36 patients are all patients who underwent regenerative treatment of the alveolar bone through tooth replantation and transplantation of the iliac cancellous bone (the bone marrow) as well as endoscopic surgery for maxillary sinus lift from May 2003 to July 2007 in our clinic. A total of 120 implants were placed in these patients when the replanted teeth fell out because of root resorption, and the success rate was examined. The success rates of the implants were 16 of 33 (48%) in the group when surveyed less than 2 years after the surgery and 84 of 87 (96.5%) in the group when surveyed more than 2 years after the surgery. A statistically significant difference was found between the 2 groups (Chi-squared test, P implant placement. Therefore, although the implant treatment should be performed later than 2 years after surgery, chewing is possible during this period, with the replanted teeth that were used for regenerative treatment of the alveolar bone. It is believed that this is an extremely effective treatment method to improve the patients' quality of life.

  9. Modified superficial musculoaponeurotic system face-lift: a review of 327 consecutive procedures and a patient satisfaction assessment.

    Science.gov (United States)

    Castello, Manuel Francisco; Lazzeri, Davide; Silvestri, Alessandro; Agostini, Tommaso; Gigliotti, Diego; Marcelli, Claudio; D'Aniello, Carlo; Gasparotti, Marco

    2011-04-01

    A conventional superficial musculoaponeurotic system (SMAS) face-lift is well established because it allows the skin envelope to be rotated in a bit more lateral direction than the cephalad redirection of the SMAS flap. This ensures an individualization of the treatment plan according to the needs of the patient and avoids a postoperative stretched look. However, this technique has some limitations with respect to its long-term effects on the sagging tissue, inadequate lifting of the malar fat pad, and flattening of the nasolabial fold. The procedure described by the authors consisted of a modified approach to conventional SMAS flap dissection for 327 patients with facial aging signs undergoing a face-lift. A pointing tongue-shaped flap of zygomaticotemporal fascia was dissected and preserved in the posterior half of the upper edge of the SMAS flap and anchored to the deep temporal fascia, enhancing the vertical support of the facial soft tissues. Outcomes were determined by case notes, clinical review, and a questionnaire. The study investigated 327 consecutive modified SMAS face-lifting procedures. Few complications were observed. Only two patients experienced small hematomas needing evacuation. Some patients reported bearable pain in the temporal region and tension during mouth opening. Temporary weakness in the branches of the facial nerve experienced by two patients resolved completely within some months. Two patients presented with dehiscence of the scar, and one patient experienced punctual retroauricular skin necrosis, which healed uneventfully with conservative treatment. Two patients reported that the knot in the temporal region was palpable through the skin. One patient experienced retroauricular infection. Only two patients required additional procedures. One mild hypertrophic scar responding to steroid injection over the mastoid area was observed in the entire series. With the reported technique, the authors achieved pleasing, natural, durable results

  10. The importance of the prejowl notch in face lifting: the prejowl implant.

    Science.gov (United States)

    Shire, James R

    2008-02-01

    This article reviews the anatomy of the lower face in light of approach and techniques for prejowl implant. Implant sizing, patient selection and analysis, technique, and complications are presented. The author cites the manner of aging in the lower face and discusses the concept of augmenting the mandible to re-establish a youthful contour by correcting the prejowl sulcus and chin for rejuvenation. Because the prejowl sulcus and jowling camouflage the jawline, recontouring the mandible with implants restores the smooth jawline to provide optimal result by restoring the oval face shape.

  11. A Retrospective Evaluation of Subsurface Monopolar Radiofrequency for Lifting of the Face, Neck, and Jawline.

    Science.gov (United States)

    Dendle, Julia; Wu, Douglas C; Fabi, Sabrina G; Melo, Diana; Goldman, Mitchel P

    2016-11-01

    Subsurface monopolar radiofrequency (SMRF) has emerged as a new method for reducing skin laxity via the controlled delivery of thermal energy below the skin using a radiofrequency probe. To evaluate the overall efficacy of the treatment and satisfaction ratings of subjects who underwent a single SMRF treatment to the face, neck, or jawline (or some combination). A retrospective, single-center study was conducted in which data were obtained via subject follow-ups at 90 and 180 days posttreatment. A total of 35 subjects, 6 men and 29 women, underwent a single SMRF treatment. Overall, 77% of subjects reported improvement, and 64% reported satisfaction with the treatment site at Day 180 posttreatment. Subsurface monopolar radiofrequency represents an effective modality to achieve skin tightening of the face, neck, and jawline. The data suggest that there is an energy delivery threshold, above which a higher percentage of subjects report satisfaction. Analysis of treatments parameters suggests an optimal treatment time and tissue temperature that should be achieved to maximize results.

  12. Tissue sealants may reduce haematoma and complications in face-lifts: A meta-analysis of comparative studies.

    Science.gov (United States)

    Giordano, Salvatore; Koskivuo, Ilkka; Suominen, Erkki; Veräjänkorva, Esko

    2017-03-01

    The use of tissue sealants has increased among different surgical specialities. Face-lift and rhytidoplasty may cause several complications such as haematoma, ecchymosis, oedema, seroma, skin necrosis, wound dehiscence and wound infection. However, administration of tissue sealants may prevent the occurrence of some complications. We performed a meta-analysis of studies that compared tissue sealant use with controls to evaluate the outcomes. A systematic literature search was performed. The primary outcome was the incidence of haematoma. Secondary outcomes were wound drainage amount, oedema, ecchymosis, seroma, skin necrosis and hypertrophic scarring. Thirteen studies involving 2434 patients were retrieved and included in the present analysis. A statistically significantly decrease in post-operative haematoma [risk ratio (RR), 0.37; 95% CI, 0.18-0.74; p = 0.005] and wound drainage (MD, -16.90, 95% CI = -25.71, -8.08, p ecchymosis, seroma, skin necrosis, and hypertrophic scarring with tissue sealant use. The use of tissue sealants prevents post-operative haematomas and reduces wound drainage. Previous studies have shown a similar trend, but the power of this meta-analysis could verify this perception. III. Copyright © 2016 British Association of Plastic, Reconstructive and Aesthetic Surgeons. Published by Elsevier Ltd. All rights reserved.

  13. A study of the long-term effect of malar fat repositioning in face lift surgery: short-term success but long-term failure.

    Science.gov (United States)

    Hamra, Sam T

    2002-09-01

    In 1990, the author reported on a series of 403 cases of deep plane face lifts, the first published technique describing the repositioning of the cheek fat, known as malar fat, in face lift surgery. This study examines the long-term results of 20 of the original series in an attempt to determine what areas of the rejuvenated face (specifically, the malar fat) showed long-term improvement. The results were judged by comparing the preoperative and long-term postoperative views in a half-and-half same-side hemiface photograph. The anatomy of the jawline (superficial musculoaponeurotic system [SMAS]), the nasolabial fold (malar fat), and the periorbital diameter were evaluated. The results confirmed that repositioning of the SMAS remained for longer than improvement in the nasolabial fold and that the vertical diameter of the periorbit did not change at all. The early results of malar fat repositioning shown at 1 to 2 years were successful, but the long-term results showed failure of the early improvement, manifested by recurrence of the nasolabial folds. There was, however, continuation of the improved results of the forehead lift and SMAS maneuvers of the original procedure. The conclusion is that only a direct excision will produce a permanent correction of the aging nasolabial fold.

  14. [Face and neck lift using a superficial musculo-aponeuro­t­ic system (SMAS) plication: Radiological analysis of tissu displacement, a case report].

    Science.gov (United States)

    Clerico, C; Dumas, P; Fernandez, J; Chignon-Sicard, B

    Face and neck lift (FNL) using SMAS plication is a simple and well-known surgical technique. The principle of smas plication from two fixed points allows an important tissue ascension. Our purpose was to objectively evaluate the SMAS plication results, although a common critic may be due to its early deep tissular displacement. We present the case of a 65 y.o. female patient who received a FNL. Miniature metal pins were placed on the external surface of the SMAS in order to ensure radiological monitoring. A cephalo­metric and photographic monitoring were performed pre­operatively and on day 1, months 2, 6 and 16 postoperatively . We performed a computed numerised analysis of the movement of the markers in an orthogonal axis. All our bearings kept a constant position in the radiographic follow-up , demons­tra­ting the fixity of SMAS kinked 16 months postoperatively. Clinically the correction remained a good appearance with a very slight relaxation of the superficial tissues (skin and subcutaneous fat). In the case of our patient, the tensioning of the deep facial plan (the SMAS) objectively appeared to be efficient over time, with an overall delay of 16 months. Our protocole appeared to be coherent without any specific complication. It permits to objectively differentiate the relaxation of the deep or superfial tissues after a facial lift procedure.

  15. Faces

    DEFF Research Database (Denmark)

    Mortensen, Kristine Køhler; Brotherton, Chloe

    2018-01-01

    In this chapter, we investigate how a face is not a singular, invariable object, but may take on a variety of forms, and how new media has especially created new venues for the moldings of faces. We suggest that faces should be viewed in plural in order to emphasize the many different facial disp...

  16. El rol del lifting endoscópico fronto-témporo-orbitario en el nuevo concepto de rejuvenecimiento facial: Mini-invasivo, tensión moderada, restauración de volúmenes The importance of brow-temporal-orbital endoscopic facelift in the new concept of facial rejuvenation: low invasiveness, moderate tension, volume restauration

    Directory of Open Access Journals (Sweden)

    A. Gennai

    2009-03-01

    Full Text Available En el concepto moderno de rejuvenecimiento facial, lo principal es conseguir un resultado natural evitando las marcas quirúrgicas y limitando las cicatrices. El lifting endoscopio fronto-témporo-orbitario es, en nuestra opinión, el mejor método para conseguir este objetivo. Entre sus peculiaridades están el ser una técnica mínimamente invasiva, que proporciona una tensión moderada natural a los tejidos blandos de la cara y redistribuye y restaura los volúmenes faciales con el mínimo de resección cutánea, logrando un resultado lo más natural posible. Al mismo tiempo, conseguimos la armonía entre las estructuras anatómicas faciales, mínimas incisiones y mínimas cicatrices. En nuestra práctica, cuando es necesario, asociamos lipofilling del área zigomático-malar, de la región perioral y de las mejillas y un rejuvenecimiento facial superficial con láser de Erbio. Para el tercio inferior de la cara empleamos estiramiento cervicofacial con cicatriz reducida. Entre Noviembre de 1998 y Diciembre de 2006 hemos realizado 221 liftings endoscópicos fronto-témporo-orbitarios: 21 hombres y 200 mujeres de edades comprendidas entre los 28 y los 55 años. Practicamos la disección en el plano infra o supragaleal según las zonas; continuamos seccionando el músculo procerus, el corrugador y la porción orbitaria del músculo orbicular a nivel del párpado inferior. Finalmente, practicamos una tracción sagital fijando puntos de acuerdo a un vector paramediano y a otro horario. Los resultados a largo plazo (6, 12 y 24 meses revelan una notable satisfacción por parte de los pacientes con un resultado estético que permanece natural en el tiempo.Primary object in modern concept of facial rejuvenation is to give a natural result, reducing the surgical cuts and limiting the scars. The fronto-temporal-orbital endoscopic facelift is, in our opinion, the best way to satisfy this purpose. Its peculiarities, such as mini-invasive technique

  17. Endoscopic dacryocystorhinostomy

    Directory of Open Access Journals (Sweden)

    Milojević Milanko

    2010-01-01

    Full Text Available Background/Aim. Intensive epiphora (lacrimal apparatus disease can make difficult daily routine and cause ocular refraction disturbances. In most cases ethiology is unknown, rarely occurs after nose surgical procedures, face fractures, in Wegener granulomatosis, sarcoidosis and malignancies. The aim of this study was to evaluate efficacy of endonasal endoscopic surgical procedure with the conventional surgical instruments in treatment of nasolacrimal obstructions. Methods. This retrospective study included 12 female patients with endonasal endoscopic surgical procedure from Otorhinological and Ophtalmological Departments of Military Medical Academy, Belgrade from September 2007 to April 2009. Preoperative nasal endoscopy was performed in order to reveal concomitant pathological conditions and anatomic anomalies which could make surgical procedure impossible. Computerized tomography was performed only in suspect nose diseases. Surgical endonasal endoscopic procedure was performed by otorhinolaryngologist and ophtalmologist in all patients. The patients had regular controls from 2 to 20 months. Results. A total of 12 female patients, age 34-83 years, were included in our study. Epiphora was a dominant symptom in all patients. In two patients deviation of nasal septum was found, and in other one conha bulosa at the same side as chronic dacryocystitis. All patients were subjected to endonasal dacryocystorhinostomy (DCR by endoscopic surgical technique using conventional instruments. Concomitantly with DCR septoplastics in two patients and lateral lamictetomy in one patient were performed. There were no complications intraoperatively as well as in the immediate postoperative course. In two patients the need for reoperation occurred. Conclusion. Endoscopic DCR is minimally invasive and efficacious procedure for nasolacrymal obstructions performed by otorhinolaryngologist and ophtalmologist. Postoperative recovery is very fast.

  18. Faces

    DEFF Research Database (Denmark)

    Mortensen, Kristine Køhler; Brotherton, Chloe

    2018-01-01

    for the face the be put into action. Based on an ethnographic study of Danish teenagers’ use of SnapChat we demonstrate how the face is used as a central medium for interaction with peers. Through the analysis of visual SnapChat messages we investigate how SnapChat requires the sender to put an ‘ugly’ face...... displays a single person make use of, and how this ‘pool of faces’ carries sociocultural meaning. While the past decades of swift technological development may seem to have diminished the role of face to face contact, the many new media has – on the contrary – established multiple new and innovative arenas...... forward. Especially the teenage girls engage in manipulating their faces into hideous expressions. However, this type of interaction is not random facial displays, but follow an ‘aesthetics of ugliness’. This aesthetics involve specific ways of looking ugly and is primarily performed by girls who have...

  19. Breast lift

    Science.gov (United States)

    ... sag again. Alternative Names Mastopexy; Breast lift with reduction; Breast lift with augmentation Patient Instructions Cosmetic breast surgery - discharge References Higdon KK, Grotting JC. Mastopexy. In: Neligan PC, ed. Plastic Surgery . 3rd ed. Philadelphia, PA: Elsevier Saunders; 2013: ...

  20. A randomized trial comparing multiband mucosectomy and cap-assisted endoscopic resection for endoscopic piecemeal resection of early squamous neoplasia of the esophagus

    NARCIS (Netherlands)

    Zhang, Yue-Ming; Boerwinkel, David F.; Qin, Xiumin; He, Shun; Xue, Liyan; Weusten, Bas L. A. M.; Dawsey, Sanford M.; Fleischer, David E.; Dou, Li-Zhou; Liu, Yong; Lu, Ning; Bergman, Jacques J. G. H. M.; Wang, Gui-Qi

    2016-01-01

    Piecemeal endoscopic resection for esophageal high grade intraepithelial neoplasia (HGIN) or early squamous cell carcinoma (ESCC) is usually performed by cap-assisted endoscopic resection. This requires submucosal lifting and multiple snares. Multiband mucosectomy (MBM) uses a modified variceal band

  1. Novel methods for endoscopic training.

    Science.gov (United States)

    Gessner, C E; Jowell, P S; Baillie, J

    1995-04-01

    The development of past, present, and future endoscopic training methods is described. A historical perspective of endoscopy training guidelines and devices is used to demonstrate support for the use of novel endoscopic training techniques. Computer simulation of endoscopy, interactive learning, and virtual reality applications in endoscopy and surgery are reviewed. The goals of endoscopic simulation and challenges facing investigators in this field are discussed, with an emphasis on current and future research.

  2. Bicoronal forehead lift.

    Science.gov (United States)

    Wojtanowski, M H

    1994-01-01

    Although aesthetic surgery on the upper third of the face has received relatively little attention in recent literature, it is an extremely important component of facial aesthetic surgery and often yields results that are quite dramatic. Periorbital rejuvenation, either alone or in conjunction with other aesthetic surgical procedures, offers facial enhancement to younger patients. In addition, older patients may benefit from a "forehead lift" performed in conjunction with lower facial surgery. This benefit is derived because lower facial surgery may create facial disharmony by yielding a more youthful lower face while leaving a more mature upper face. In these cases a forehead lift serves to unify the patient's facial appearance. The coronal browlifting technique described here is a personal interpretation and modification of periorbital rejuvenation techniques. This approach represents an ideal aesthetic procedure: It is a technically straightforward operation that yields results which are predictable, natural appearing, and long lasting with minimal morbidity.

  3. Buttock Lift

    Science.gov (United States)

    ... Rochester, Minn. July 29, 2013. Buttock lift About Advertisement Mayo Clinic does not endorse companies or products. ... a Job Site Map About This Site Twitter Facebook Google YouTube Pinterest Mayo Clinic is a not- ...

  4. Buttock Lift

    Science.gov (United States)

    ... lift, the repositioning of your tissues can affect superficial sensory nerves. You'll likely feel some reduced ... shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. © 1998-2018 Mayo ...

  5. Forehead lift

    Science.gov (United States)

    ... Images Forehead lift - series References McLain L. Facial cosmetic surgery. In: Hupp JR, Ellis E, Tucker MR, eds. ... A.D.A.M. Editorial team. Plastic and Cosmetic Surgery Read more Skin Aging Read more NIH MedlinePlus ...

  6. Endoscopic retrograde cholangiopancreatography and endoscopic ...

    African Journals Online (AJOL)

    An approach to suspected gallstone pancreatitis'based on endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic sphincterotomy (ES) was adopted in 1976 and was followed in 29 patients. ERCp became the routine method of early biliary tract assessment when gallstone pancreatitis was suspected on ...

  7. [Cervical lift: An update].

    Science.gov (United States)

    Labbé, D; Guerreschi, P

    2017-10-01

    The neck is an aesthetic unit for which a rejuvenation request is sometimes very targeted or ore often encompassed in a global surgical project of face-lift. To obtain a long lasting outcome, the plastic surgeon has to make a full, detailed, and exhaustive analysis of the neck in order to choose the best indication within the multiple surgical tools. A full clinical examination is the key point, every aspects are outlined. The numerous surgical choices are described, illustrated, and sometimes revisited in the light of targeted anatomical studies. A didactic and graduated way is used to explain the recent evolutions of the surgical tools of the cervical lifting. Complications and insufficiencies in outcomes must be identified and explained. Finally, we illustrate this development by clinical cases. The surgical improvement of the cervical region is, for us, centered on the reconstruction of a cervical retaining structure: the Cervico-Mandibular Angle Suspensor (CMAS) ligament. This element makes it possible to understand and integrate the large number of technical proposals for cervical lifting. Copyright © 2017 Elsevier Masson SAS. All rights reserved.

  8. Reinforced orbitotemporal lift: contribution to midface rejuvenation.

    Science.gov (United States)

    Renó, Waldir Teixeira

    2003-02-01

    The changes in the aging face occur from progressive ptosis of the skin, fat, and muscle, in conjunction with bone absorption and cartilage atrophy. In the orbital region, hollowness and compartmentalization occur. Conventional face lift procedures correct only the skin flaccidity, and superficial musculoaponeurotic system techniques reposition the skin and platysma without repositioning the middle third of the face, creating an artificial jawline. Subperiosteal rhytidectomy disrupts the anatomy of the periorbita, which gives the patient a certain scarecrow aspect. Composite rhytidectomy associated with brow lift and blepharoplasty may offer better results, with improvement in the malar and orbital regions. The reinforced orbitotemporal lift (ROTEL) is a new procedure in a face lift that allows the orbicularis oculi muscle and all the structures connected to it to be elevated and stretched and the orbitotemporal skin to be raised, repositioning these structures and ending orbital compartmentalization. The result is an impressive improvement in the malar-orbitotemporal region, resulting in a natural and youthful appearance.

  9. Arm Lift (Brachioplasty)

    Science.gov (United States)

    Arm lift Overview An arm lift — also known as brachioplasty — is a cosmetic surgical procedure to improve the appearance of the under portion of your upper arms. During an arm lift, excess skin and fat ...

  10. [Endoscopic full-thickness resection].

    Science.gov (United States)

    Meier, B; Schmidt, A; Caca, K

    2016-08-01

    Conventional endoscopic resection techniques such as endoscopic mucosal resection (EMR) or endoscopic submucosal dissection (ESD) are powerful tools for the treatment of gastrointestinal (GI) neoplasms. However, those techniques are limited to the superficial layers of the GI wall (mucosa and submucosa). Lesions without lifting sign (usually arising from deeper layers) or lesions in difficult anatomic positions (appendix, diverticulum) are difficult - if not impossible - to resect using conventional techniques, due to the increased risk of complications. For larger lesions (>2 cm), ESD appears to be superior to the conventional techniques because of the en bloc resection, but the procedure is technically challenging, time consuming, and associated with complications even in experienced hands. Since the development of the over-the-scope clips (OTSC), complications like bleeding or perforation can be endoscopically better managed. In recent years, different endoscopic full-thickness resection techniques came to the focus of interventional endoscopy. Since September 2014, the full-thickness resection device (FTRD) has the CE marking in Europe for full-thickness resection in the lower GI tract. Technically the device is based on the OTSC system and combines OTSC application and snare polypectomy in one step. This study shows all full-thickness resection techniques currently available, but clearly focuses on the experience with the FTRD in the lower GI tract.

  11. Lift truck safety review

    Energy Technology Data Exchange (ETDEWEB)

    Cadwallader, L.C.

    1997-03-01

    This report presents safety information about powered industrial trucks. The basic lift truck, the counterbalanced sit down rider truck, is the primary focus of the report. Lift truck engineering is briefly described, then a hazard analysis is performed on the lift truck. Case histories and accident statistics are also given. Rules and regulations about lift trucks, such as the US Occupational Safety an Health Administration laws and the Underwriter`s Laboratories standards, are discussed. Safety issues with lift trucks are reviewed, and lift truck safety and reliability are discussed. Some quantitative reliability values are given.

  12. Lift truck safety review

    International Nuclear Information System (INIS)

    Cadwallader, L.C.

    1997-03-01

    This report presents safety information about powered industrial trucks. The basic lift truck, the counterbalanced sit down rider truck, is the primary focus of the report. Lift truck engineering is briefly described, then a hazard analysis is performed on the lift truck. Case histories and accident statistics are also given. Rules and regulations about lift trucks, such as the US Occupational Safety an Health Administration laws and the Underwriter's Laboratories standards, are discussed. Safety issues with lift trucks are reviewed, and lift truck safety and reliability are discussed. Some quantitative reliability values are given

  13. Endoscopic tattooing.

    Science.gov (United States)

    Kethu, Sripathi R; Banerjee, Subhas; Desilets, David; Diehl, David L; Farraye, Francis A; Kaul, Vivek; Kwon, Richard S; Mamula, Petar; Pedrosa, Marcos C; Rodriguez, Sarah A; Wong Kee Song, Louis-Michel; Tierney, William M

    2010-10-01

    The American Society for Gastrointestinal Endoscopy (ASGE) Technology Committee provides reviews of existing, new, or emerging endoscopic technologies that have an impact on the practice of GI endoscopy. Evidence-based methodology is used, with a MEDLINE literature search to identify pertinent clinical studies on the topic and a MAUDE (U.S. Food and Drug Administration Center for Devices and Radiological Health) database search to identify the reported complications of a given technology. Both are supplemented by accessing the "related articles" feature of PubMed and by scrutinizing pertinent references cited by the identified studies. Controlled clinical trials are emphasized, but in many cases, data from randomized, controlled trials are lacking. In such cases, large case series, preliminary clinical studies, and expert opinions are used. Technical data are gathered from traditional and Web-based publications, proprietary publications, and informal communications with pertinent vendors. Technology Status Evaluation Reports are drafted by 1 or 2 members of the ASGE Technology Committee, reviewed and edited by the committee as a whole, and approved by the Governing Board of the ASGE. When financial guidance is indicated, the most recent coding data and list prices at the time of publication are provided. For this review, the MEDLINE database was searched through January 2010 for articles related to endoscopic tattooing by using the Keywords tattooing, colonic, endoscopic, India ink, indocyanine green in different search term combinations. Technology Status Evaluation Reports are scientific reviews provided solely for educational and informational purposes. Technology Status Evaluation Reports are not rules and should not be construed as establishing a legal standard of care or as encouraging, advocating, requiring, or discouraging any particular treatment or payment for such treatment. Copyright © 2010 American Society for Gastrointestinal Endoscopy. Published by

  14. Endoscopic Microscopy

    Directory of Open Access Journals (Sweden)

    Konstantin Sokolov

    2002-01-01

    Full Text Available In vivo endoscopic optical microscopy provides a tool to assess tissue architecture and morphology with contrast and resolution similar to that provided by standard histopathology – without need for physical tissue removal. In this article, we focus on optical imaging technologies that have the potential to dramatically improve the detection, prevention, and therapy of epithelial cancers. Epithelial pre-cancers and cancers are associated with a variety of morphologic, architectural, and molecular changes, which currently can be assessed only through invasive, painful biopsy. Optical imaging is ideally suited to detecting cancer-related alterations because it can detect biochemical and morphologic alterations with sub-cellular resolution throughout the entire epithelial thickness. Optical techniques can be implemented non-invasively, in real time, and at low cost to survey the tissue surface at risk. Our manuscript focuses primarily on modalities that currently are the most developed: reflectance confocal microscopy (RCM and optical coherence tomography (OCT. However, recent advances in fluorescence-based endoscopic microscopy also are reviewed briefly. We discuss the basic principles of these emerging technologies and their current and potential applications in early cancer detection. We also present research activities focused on development of exogenous contrast agents that can enhance the morphological features important for cancer detection and that have the potential to allow vital molecular imaging of cancer-related biomarkers. In conclusion, we discuss future improvements to the technology needed to develop robust clinical devices.

  15. GI endoscopes.

    Science.gov (United States)

    Varadarajulu, Shyam; Banerjee, Subhas; Barth, Bradley A; Desilets, David J; Kaul, Vivek; Kethu, Sripathi R; Pedrosa, Marcos C; Pfau, Patrick R; Tokar, Jeffrey L; Wang, Amy; Wong Kee Song, Louis-Michel; Rodriguez, Sarah A

    2011-07-01

    The ASGE Technology Committee provides reviews of existing, new, or emerging endoscopic technologies that have an impact on the practice of GI endoscopy. Evidence-based methodology is used, performing a MEDLINE literature search to identify pertinent clinical studies on the topic and a MAUDE (U.S. Food and Drug Administration Center for Devices and Radiological Health) database search to identify the reported complications of a given technology. Both are supplemented by accessing the "related articles" feature of PubMed and by scrutinizing pertinent references cited by the identified studies. Controlled clinical trials are emphasized, but in many cases data from randomized, controlled trials are lacking. In such cases, large case series, preliminary clinical studies, and expert opinions are used. Technical data are gathered from traditional and Web-based publications, proprietary publications, and informal communications with pertinent vendors. Technology Status Evaluation Reports are drafted by 1 or 2 members of the ASGE Technology Committee, reviewed and edited by the Committee as a whole, and approved by the Governing Board of the ASGE. When financial guidance is indicated, the most recent coding data and list prices at the time of publication are provided. For this review, the MEDLINE database was searched through September 2010 for articles related to endoscopy by using the key words "gastroscope," "colonoscope," "echoendoscope," "duodenoscope," "choledochoscope," "ultraslim endoscope," "variable stiffness colonoscope," and "wide-angle colonoscope." Technology Status Evaluation Reports are scientific reviews provided solely for educational and informational purposes. Technology Status Evaluation Reports are not rules and should not be construed as establishing a legal standard of care or as encouraging, advocating, requiring, or discouraging any particular treatment or payment for such treatment. Copyright © 2011 American Society for Gastrointestinal

  16. Endoscopic dacryocystrhinostomy.

    Science.gov (United States)

    Araujo Filho, Bernardo Cunha; Voegels, Richard Louis; Butugan, Ossamu; Pinheiro Neto, Carlos Diogenes; Lessa, Marcus Miranda

    2005-01-01

    Endonasal endoscopic dacryocystorhinostomy (EN-DCR) is now a well-established procedure to relieve nasolacrimal duct obstruction, becoming its domain for the ENT surgeons indispensable. The aim of the present study is to report the experience of the Otorhinolaryngology Department of the University of São Paulo Medical School in the management of the obstruction of the drainage of the nasolacrimal system by EN-DCR, comparing with the results in literature. clinical retrospective. We reviewed the medical records of 17 patients (17 eyes) that were submitted to EN-DCR between april 2001 and july 2004. We analysed: sex, age at the time of diagnosis, etiology, clinical findings, surgical technique, use of silicone tubes, follow-up and complications. Eight men and nine women, the age range was from 29 to 79 years (mean 42.6413.1 years), mean follow-up time: 15 months, presented a lacrimal clinic with epiphora. Powered DCR was performed in 06 cases and YAG LASER in 01 patient. Silicone tubes were used in all cases and left in place mean 7.9 weeks. The surgical success rate was 82,3%. EN-DCR showed one safe technique, with advantages in relation to the external technique. So ophthalmologists and ENT physicians must work in harmony to offer more benefits to its patients.

  17. Thread-Lift Sutures: Still in the Lift? A Systematic Review of the Literature.

    Science.gov (United States)

    Gülbitti, Haydar Aslan; Colebunders, Britt; Pirayesh, Ali; Bertossi, Dario; van der Lei, Berend

    2018-03-01

    In 2006, Villa et al. published a review article concerning the use of thread-lift sutures and concluded that the technique was still in its infancy but had great potential to become a useful and effective procedure for nonsurgical lifting of sagged facial tissues. As 11 years have passed, the authors now performed again a systematic review to determine the real scientific current state of the art on the use of thread-lift sutures. A systematic review was performed according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines using the PubMed database and using the Medical Subject Headings search term "Rhytidoplasty." "Rhytidoplasty" and the following entry terms were included by this Medical Subject Headings term: "facelift," "facelifts," "face Lift," "Face Lifts," "Lift," "Face," "Lifts," "Platysmotomy," "Platysmotomies," "Rhytidectomy," "Rhytidectomies," "Platysmaplasty," "and "Platysmaplasties." The Medical Subject Headings term "Rhytidoplasty" was combined with the following search terms: "Barbed suture," "Thread lift," "APTOS," "Suture suspension," "Percutaneous," and "Silhouette suture." RefWorks was used to filter duplicates. Three of the authors (H.A.G., B.C., and B.L.) performed the search independently. The initial search with all search terms resulted in 188 articles. After filtering the duplicates and the articles about open procedures, a total of 41 articles remained. Of these, the review articles, case reports, and letters to the editor were subsequently excluded, as were reports dealing with nonbarbed sutures, such as Vicryl and Prolene with Gore-Tex. This resulted in a total of 12 articles, seven additional articles since the five articles reviewed by Villa et al. The authors' review demonstrated that, within the past decade, little or no substantial evidence has been added to the peer-reviewed literature to support or sustain the promising statement about thread-lift sutures as made by Villa et al. in 2006 in terms of

  18. Breast Lift (Mastopexy)

    Science.gov (United States)

    ... Jones & Bartlett Learning; 2005:167. Breast lift About Advertisement Mayo Clinic does not endorse companies or products. ... a Job Site Map About This Site Twitter Facebook Google YouTube Pinterest Mayo Clinic is a not- ...

  19. Wind tower service lift

    Science.gov (United States)

    Oliphant, David; Quilter, Jared; Andersen, Todd; Conroy, Thomas

    2011-09-13

    An apparatus used for maintaining a wind tower structure wherein the wind tower structure may have a plurality of legs and may be configured to support a wind turbine above the ground in a better position to interface with winds. The lift structure may be configured for carrying objects and have a guide system and drive system for mechanically communicating with a primary cable, rail or other first elongate member attached to the wind tower structure. The drive system and guide system may transmit forces that move the lift relative to the cable and thereby relative to the wind tower structure. A control interface may be included for controlling the amount and direction of the power into the guide system and drive system thereby causing the guide system and drive system to move the lift relative to said first elongate member such that said lift moves relative to said wind tower structure.

  20. Aerodynamic Lifting Force.

    Science.gov (United States)

    Weltner, Klaus

    1990-01-01

    Describes some experiments showing both qualitatively and quantitatively that aerodynamic lift is a reaction force. Demonstrates reaction forces caused by the acceleration of an airstream and the deflection of an airstream. Provides pictures of demonstration apparatus and mathematical expressions. (YP)

  1. Brow lift fixation.

    Science.gov (United States)

    Gold, Alan H; Bernard, Robert W; Hamas, Robert S; McKinney, Peter; Paul, Malcolm D

    2003-05-01

    One of the more difficult and controversial aspects of forehead and brow lift is fixation with control and stabilization of the result. Aesthetic Surgery Journal has invited Robert W. Bernard, MD; Robert S. Hamas, MD; Peter McKinney, MD; and Malcolm D. Paul, MD to share their preferred brow lift techniques. Here are their responses to questions posed by "Comparing Notes" editor, Alan H. Gold, MD. (Aesthetic Surg J 2003;23:217-219.).

  2. Regional changes in spine posture at lift onset with changes in lift distance and lift style

    NARCIS (Netherlands)

    Gill, K.P.; Bennet, S.J.; Savelsbergh, G.J.P.; van Dieen, J.H.

    2007-01-01

    STUDY DESIGN. Repeated measures experiment. OBJECTIVE. To determine the effect of changes in horizontal lift distance on the amount of flexion, at lift onset, in different spine regions when using different lift styles. SUMMARY OF BACKGROUND DATA. By approximating spine bending during lifting as a

  3. Finesse in forehead and brow rejuvenation: modern concepts, including endoscopic methods.

    Science.gov (United States)

    Drolet, Brian C; Phillips, Benjamin Z; Hoy, Erik A; Chang, Johnny; Sullivan, Patrick K

    2014-12-01

    The brow and forehead are essential elements of the facial aesthetic architecture. Although frequently overlooked in youth, signs of facial aging are often most noticeable in the upper third of the face. Ptosis and loss of contour in the brows, along with temporal volume loss, sagging of periorbital tissue, and rhytides in the forehead, are common presenting complaints for aesthetic surgery. Although use of nonsurgical procedures (e.g., neuromodulators) has become very common practice, knowledge of surgical anatomy and interventions for brow and forehead rejuvenation are critical for a plastic surgeon. The earliest descriptions of brow-lift procedures are nearly a century old. Techniques have evolved significantly, to the point that patients may now return to work within 1 week of surgery, with minimal or no stigmata from an operation. The literature and a series of cases from the senior surgeon (P.K.S.) were reviewed. A minimally invasive approach with an endoscope for dissection and repositioning of the brow was used in all patients. The authors have found that permanent suture fixation with cortical tunnels can produce an excellent, long-lasting aesthetic result for not only the forehead and brow but also the lateral periorbital and temporal regions. Although each operation is tailored to the patient's individual anatomy, the authors' approach to the endoscopic procedure is described in this article, along with a review of anatomical and surgical considerations. Finally, several patients provide demonstrative results from the senior surgeon's series of 546 patients.

  4. Isolated neck-lifting procedure: isolated stork lift.

    Science.gov (United States)

    Barbarino, Sheila C; Wu, Allan Y; Morrow, David M

    2013-04-01

    Many patients desire cosmetic improvement of neck laxity when consulting with a plastic surgeon about their face. Neck laxity and loss of the cervicomental angle can be due to multiple components of aging such as skin quality/elasticity, loss of platysma muscle tone, and submental fat accumulation. Traditionally, the procedure of choice for patients with an aging lower face and neck is a cervicofacial rhytidectomy. However, occasionally, a patient wishes to have no other facial surgery than an improvement of their excessive skin of the anterior, lateral, and/or posterior neck. In other instances, a patient may present with having had a face/neck-lifting procedure that left objectionable vertical/diagonal lines at the lateral neck. In both these instances, a surgeon should consider an isolated stork lift (ISL) procedure. An ISL procedure avoids and/or corrects problematic vertical/diagonal lateral neck folds by "walking" the excess skin flaps around the posterior inferior occipital hairline bilaterally, bringing the flaps together at the lateral and posterior neck, which sometimes involves a midline posterior dart excision of the dog ear. A patient presenting with excessive skin of the neck (anterior, lateral, and/or posterior) and/or residual vertical/diagonal skin folds is an excellent candidate for the ISL. The ISL procedure was performed on 273 patients over a 2-year period at The Morrow Institute. Patients were included if they had excessive skin of the anterior, lateral, and/or posterior neck and/or diagonal/vertical lateral bands and did not desire a full face-lifting procedure. Patients were excluded from this study if they would not accept having longer hair in order to cover the scar along the posterior inferior occipital hairline or a midline T-flap skin closure scar at the base of the posterior midline neck. Under a combination of local anesthesia and IV sedation, a postauricular face-lift incision was made that was extended in a circumoccipital fashion

  5. Regional changes in spine posture at lift onset with changes in lift distance and lift style.

    Science.gov (United States)

    Gill, K Peter; Bennett, Simon J; Savelsbergh, Geert J P; van Dieën, Jaap H

    2007-07-01

    Repeated measures experiment. To determine the effect of changes in horizontal lift distance on the amount of flexion, at lift onset, in different spine regions when using different lift styles. By approximating spine bending during lifting as a pure rotation about a single revolute joint, the differential effects of task constraints and instructions on motions of different spine levels will be obscured. Eight participants lifted a 10-kg crate from the floor, 10 times at each of five distances. Participants were instructed to use freestyle (a participant's preferred lift style), squat, or stoop lift styles. Kinematic data were collected from the mid thoracic spine, lower thoracic/upper lumbar spine, mid lumbar spine, and the lower lumbar spine at lift onset. A whole spine angle was also calculated. Flexion of the lower lumbar spine was not affected by lift distance and style. Differences between lift styles occurred mainly in the mid thoracic and the lower thoracic/upper lumbar regions. With increasing horizontal distance, changes in lift style occurred in the upper three spine regions. These results suggest that the tensile strain on tissues in the lower lumbar spine, which can be a cause of injury in lifting, was not affected by lift style or horizontal lift distance when lifting from floor level.

  6. Waste Package Lifting Calculation

    International Nuclear Information System (INIS)

    H. Marr

    2000-01-01

    The objective of this calculation is to evaluate the structural response of the waste package during the horizontal and vertical lifting operations in order to support the waste package lifting feature design. The scope of this calculation includes the evaluation of the 21 PWR UCF (pressurized water reactor uncanistered fuel) waste package, naval waste package, 5 DHLW/DOE SNF (defense high-level waste/Department of Energy spent nuclear fuel)--short waste package, and 44 BWR (boiling water reactor) UCF waste package. Procedure AP-3.12Q, Revision 0, ICN 0, calculations, is used to develop and document this calculation

  7. Heterotic weight lifting

    International Nuclear Information System (INIS)

    Gato-Rivera, B.; Schellekens, A.N.

    2010-01-01

    We describe a method for constructing genuinely asymmetric (2,0) heterotic strings out of N=2 minimal models in the fermionic sector, whereas the bosonic sector is only partly build out of N=2 minimal models. This is achieved by replacing one minimal model plus the superfluous E 8 factor by a non-supersymmetric CFT with identical modular properties. This CFT generically lifts the weights in the bosonic sector, giving rise to a spectrum with fewer massless states. We identify more than 30 such lifts, and we expect many more to exist. This yields more than 450 different combinations. Remarkably, despite the lifting of all Ramond states, it is still possible to get chiral spectra. Even more surprisingly, these chiral spectra include examples with a certain number of chiral families of SO(10), SU(5) or other subgroups, including just SU(3)xSU(2)xU(1). The number of families and mirror families is typically smaller than in standard Gepner models. Furthermore, in a large number of different cases, spectra with three chiral families can be obtained. Based on a first scan of about 10% of the lifted Gepner models we can construct, we have collected more than 10,000 distinct spectra with three families, including examples without mirror fermions. We present an example where the GUT group is completely broken to the standard model, but the resulting and inevitable fractionally charged particles are confined by an additional gauge group factor.

  8. Hydraulic lifting device

    Science.gov (United States)

    Terrell, Kyle (Inventor)

    1990-01-01

    A piston and cylinder assembly is disclosed which is constructed of polyvinyl chloride that uses local water pressure to perform small lifting tasks. The chamber is either pressurized to extend the piston or depressurized to retract the piston. The present invention is best utilized for raising and lowering toilet seats.

  9. Heterotic weight lifting

    Energy Technology Data Exchange (ETDEWEB)

    Gato-Rivera, B. [NIKHEF Theory Group, Kruislaan 409, 1098 SJ Amsterdam (Netherlands); Instituto de Fisica Fundamental, CSIC, Serrano 123, Madrid 28006 (Spain); Schellekens, A.N., E-mail: t58@nikhef.n [NIKHEF Theory Group, Kruislaan 409, 1098 SJ Amsterdam (Netherlands); Instituto de Fisica Fundamental, CSIC, Serrano 123, Madrid 28006 (Spain); IMAPP, Radboud Universiteit, Nijmegen (Netherlands)

    2010-03-21

    We describe a method for constructing genuinely asymmetric (2,0) heterotic strings out of N=2 minimal models in the fermionic sector, whereas the bosonic sector is only partly build out of N=2 minimal models. This is achieved by replacing one minimal model plus the superfluous E{sub 8} factor by a non-supersymmetric CFT with identical modular properties. This CFT generically lifts the weights in the bosonic sector, giving rise to a spectrum with fewer massless states. We identify more than 30 such lifts, and we expect many more to exist. This yields more than 450 different combinations. Remarkably, despite the lifting of all Ramond states, it is still possible to get chiral spectra. Even more surprisingly, these chiral spectra include examples with a certain number of chiral families of SO(10), SU(5) or other subgroups, including just SU(3)xSU(2)xU(1). The number of families and mirror families is typically smaller than in standard Gepner models. Furthermore, in a large number of different cases, spectra with three chiral families can be obtained. Based on a first scan of about 10% of the lifted Gepner models we can construct, we have collected more than 10,000 distinct spectra with three families, including examples without mirror fermions. We present an example where the GUT group is completely broken to the standard model, but the resulting and inevitable fractionally charged particles are confined by an additional gauge group factor.

  10. Endoscopic injection therapy

    Directory of Open Access Journals (Sweden)

    Sang Woon Kim

    2017-06-01

    Full Text Available Since the U.S. Food and Drug Administration approved dextranomer/hyaluronic acid copolymer (Deflux for the treatment of vesicoureteral reflux, endoscopic injection therapy using Deflux has become a popular alternative to open surgery and continuous antibiotic prophylaxis. Endoscopic correction with Deflux is minimally invasive, well tolerated, and provides cure rates approaching those of open surgery (i.e., approximately 80% in several studies. However, in recent years a less stringent approach to evaluating urinary tract infections (UTIs and concerns about long-term efficacy and complications associated with endoscopic injection have limited the use of this therapy. In addition, there is little evidence supporting the efficacy of endoscopic injection therapy in preventing UTIs and vesicoureteral reflux-related renal scarring. In this report, we reviewed the current literature regarding endoscopic injection therapy and provided an updated overview of this topic.

  11. Endoscopic injection therapy

    Science.gov (United States)

    Kim, Sang Woon; Lee, Yong Seung

    2017-01-01

    Since the U.S. Food and Drug Administration approved dextranomer/hyaluronic acid copolymer (Deflux) for the treatment of vesicoureteral reflux, endoscopic injection therapy using Deflux has become a popular alternative to open surgery and continuous antibiotic prophylaxis. Endoscopic correction with Deflux is minimally invasive, well tolerated, and provides cure rates approaching those of open surgery (i.e., approximately 80% in several studies). However, in recent years a less stringent approach to evaluating urinary tract infections (UTIs) and concerns about long-term efficacy and complications associated with endoscopic injection have limited the use of this therapy. In addition, there is little evidence supporting the efficacy of endoscopic injection therapy in preventing UTIs and vesicoureteral reflux-related renal scarring. In this report, we reviewed the current literature regarding endoscopic injection therapy and provided an updated overview of this topic. PMID:28612059

  12. Lifting Bodies on Lakebed

    Science.gov (United States)

    1969-01-01

    The wingless, lifting body aircraft sitting on Rogers Dry Lake at what is now NASA's Dryden Flight Research Center, Edwards, California, from left to right are the X-24A, M2-F3 and the HL-10.The lifting body aircraft studied the feasibility of maneuvering and landing an aerodynamic craft designed for reentry from space. These lifting bodies were air launched by a B-52 mother ship, then flew powered by their own rocket engines before making an unpowered approach and landing. They helped validate the concept that a space shuttle could make accurate landings without power. The X-24A flew from April 17, 1969 to June 4, 1971. The M2-F3 flew from June 2, 1970 until December 22, 1972. The HL-10 flew from December 22, 1966 until July 17, 1970, and logged the highest and fastest records in the lifting body program. The X-24 was one of a group of lifting bodies flown by the NASA Flight Research Center (FRC-now Dryden Flight Research Center), Edwards, California, in a joint program with the U.S. Air Force at Edwards Air Force Base from 1963 to 1975. The lifting bodies were used to demonstrate the ability of pilots to maneuver and safely land wingless vehicles designed to fly back to Earth from space and be landed like an airplane at a predetermined site. Lifting bodies' aerodynamic lift, essential to flight in the atmosphere, was obtained from their shape. The addition of fins and control surfaces allowed the pilots to stabilize and control the vehicles and regulate their flight paths. Built by Martin Aircraft Company, Maryland, for the U.S. Air Force, the X-24A was a bulbous vehicle shaped like a teardrop with three vertical fins at the rear for directional control. It weighed 6,270 pounds, was 24.5 feet long and 11.5 feet wide (measuring just the fuselage, not the distance between the tips of the outboard fins). Its first unpowered glide flight was on April 17, 1969, with Air Force Maj. Jerauld Gentry at the controls. Gentry also piloted its first powered flight on March 19

  13. Knees Lifted High

    Centers for Disease Control (CDC) Podcasts

    2008-08-04

    The Eagle Books are a series of four books that are brought to life by wise animal characters - Mr. Eagle, Miss Rabbit, and Coyote - who engage Rain That Dances and his young friends in the joy of physical activity, eating healthy foods, and learning from their elders about health and diabetes prevention. Knees Lifted High gives children fun ideas for active outdoor play.  Created: 8/4/2008 by National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP).   Date Released: 8/5/2008.

  14. Lift application development cookbook

    CERN Document Server

    Garcia, Gilberto T

    2013-01-01

    Lift Application Development Cookbook contains practical recipes on everything you will need to create secure web applications using this amazing framework.The book first teaches you basic topics such as starting a new application and gradually moves on to teach you advanced topics to achieve a certain task. Then, it explains every step in detail so that you can build your knowledge about how things work.This book is for developers who have at least some basic knowledge about Scala and who are looking for a functional, secure, and modern web framework. Prior experience with HTML and JavaScript

  15. Face to Face

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 14; Issue 10. Turning a New Leaf H. Y. Mohan Ram talks to Sujata Varadarajan. H Y Mohan Ram Sujata Varadarajan. Face to Face Volume 14 Issue 10 October 2009 pp 1003-1017 ...

  16. Face to Face

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 20; Issue 3. Symmetry and Mathematics: Pioneering Insights into the Structure of Physics. Urjit A Yajnik. Face to Face Volume 20 Issue 3 March 2015 pp 264-276. Fulltext. Click here to view fulltext PDF. Permanent link:

  17. Face to Face

    DEFF Research Database (Denmark)

    Jungfalk, Michael; Rossen, Svend

    2008-01-01

    Blended learning in education is the combination of face‐to‐face seminars and on‐line work based on the internet. We have investigated which factors that we found were important in designing and conducting face‐to‐face seminars in order to facilitate learning processes in the periods of on...

  18. Face to Face

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 16; Issue 1. Do We Learn to See? Torsten Wiesel Prasanna Venkhatesh Venkataramani. Face to Face Volume 16 Issue 1 January 2011 pp 88-99. Fulltext. Click here to view fulltext PDF. Permanent link:

  19. Face to Face

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 5. Science is Not a Zero-Sum Game. Devendra Mani. Face to Face Volume 19 Issue 5 May 2014 pp 471-477. Fulltext. Click here to view fulltext PDF. Permanent link: https://www.ias.ac.in/article/fulltext/reso/019/05/0471-0477. Author Affiliations.

  20. Calibration procedures of the Tore-Supra infrared endoscopes

    Science.gov (United States)

    Desgranges, C.; Jouve, M.; Balorin, C.; Reichle, R.; Firdaouss, M.; Lipa, M.; Chantant, M.; Gardarein, J. L.; Saille, A.; Loarer, T.

    2018-01-01

    Five endoscopes equipped with infrared cameras working in the medium infrared range (3-5 μm) are installed on the controlled thermonuclear fusion research device Tore-Supra. These endoscopes aim at monitoring the plasma facing components surface temperature to prevent their overheating. Signals delivered by infrared cameras through endoscopes are analysed and used on the one hand through a real time feedback control loop acting on the heating systems of the plasma to decrease plasma facing components surface temperatures when necessary, on the other hand for physics studies such as determination of the incoming heat flux . To ensure these two roles a very accurate knowledge of the absolute surface temperatures is mandatory. Consequently the infrared endoscopes must be calibrated through a very careful procedure. This means determining their transmission coefficients which is a delicate operation. Methods to calibrate infrared endoscopes during the shutdown period of the Tore-Supra machine will be presented. As they do not allow determining the possible transmittances evolution during operation an in-situ method is presented. It permits the validation of the calibration performed in laboratory as well as the monitoring of their evolution during machine operation. This is possible by the use of the endoscope shutter and a dedicated plasma scenario developed to heat it. Possible improvements of this method are briefly evoked.

  1. Simultaneous oroantral communication closure, sinus‑lifting, and ...

    African Journals Online (AJOL)

    2015-10-10

    Oct 10, 2015 ... However, these techniques cannot support the bone required for rehabilitation of the posterior maxilla with dental implants, and they require sinus‑lifting procedures long after the OAC or OAF closure. This method can lead to problems for patients facing a prolonged treatment period and several operations.

  2. Heavy-Load Lifting

    DEFF Research Database (Denmark)

    Bloomquist, Kira; Oturai, Peter; Steele, Megan L

    2018-01-01

    PURPOSE: Despite a paucity of evidence, prevention guidelines typically advise avoidance of heavy lifting in an effort to protect against breast cancer-related lymphedema. This study compared acute responses in arm swelling and related symptoms after low- and heavy-load resistance exercise among...... women at risk of lymphedema while receiving adjuvant taxane-based chemotherapy. METHODS: This is a randomized, cross-over equivalence trial. Women receiving adjuvant taxane-based chemotherapy for breast cancer who had undergone axillary lymph node dissection (n=21) participated in low- (60-65% 1...... repetition maximum (RM), two sets of 15-20 repetitions) and heavy-load (85-90% 1RM, three sets of 5-8 repetition) upper-extremity resistance exercise separated by a one-week wash-out period. Swelling was determined by bioimpedance spectroscopy and dual energy x-ray absorptiometry, with breast cancer...

  3. Project LIFT: Year 1 Report

    Science.gov (United States)

    Norton, Michael; Piccinino, Kelly

    2014-01-01

    Research for Action (RFA) is currently in the second year of a five-year external evaluation of the Project Leadership and Investment for Transformation (LIFT) Initiative in the Charlotte-Mecklenburg School District (CMS). Project LIFT is a public-private partnership between CMS and the local philanthropic and business communities in Charlotte,…

  4. Project LIFT: Year Two Report

    Science.gov (United States)

    Norton, Michael; Piccinino, Kelly

    2014-01-01

    Research for Action (RFA) has completed its second year of a five-year external evaluation of the Project Leadership and Investment for Transformation (LIFT) Initiative in the Charlotte-Mecklenburg School District (CMS). Project LIFT is a public-private partnership between CMS and the local philanthropic and business communities in Charlotte,…

  5. Summary of Lift and Lift/Cruise Fan Powered Lift Concept Technology

    Science.gov (United States)

    Cook, Woodrow L.

    1993-01-01

    A summary is presented of some of the lift and lift/cruise fan technology including fan performance, fan stall, ground effects, ingestion and thrust loss, design tradeoffs and integration, control effectiveness and several other areas related to vertical short takeoff and landing (V/STOL) aircraft conceptual design. The various subjects addressed, while not necessarily pertinent to specific short takeoff/vertical landing (STOVL) supersonic designs being considered, are of interest to the general field of lift and lift/cruise fan aircraft designs and may be of importance in the future. The various wind tunnel and static tests reviewed are: (1) the Doak VZ-4 ducted fan, (2) the 0.57 scale model of the Bell X-22 ducted fan aircraft, (3) the Avrocar, (4) the General Electric lift/cruise fan, (5) the vertical short takeoff and landing (V/STOL) lift engine configurations related to ingestion and consequent thrust loss, (6) the XV-5 and other fan-in-wing stall consideration, (7) hybrid configurations such as lift fan and lift/cruise fan or engines, and (8) the various conceptual design studies by air-frame contractors. Other design integration problems related to small and large V/STOL transport aircraft are summarized including lessons learned during more recent conceptual design studies related to a small executive V/STOL transport aircraft.

  6. Endoscopic management of colorectal adenomas.

    Science.gov (United States)

    Meier, Benjamin; Caca, Karel; Fischer, Andreas; Schmidt, Arthur

    2017-01-01

    Colorectal adenomas are well known precursors of invasive adenocarcinoma. Colonoscopy is the gold standard for adenoma detection. Colonoscopy is far more than a diagnostic tool, as it allows effective treatment of colorectal adenomas. Endoscopic resection of colorectal adenomas has been shown to reduce the incidence and mortality of colorectal cancer. Difficult resection techniques are available, such as endoscopic mucosal resection, endoscopic submucosal dissection and endoscopic full-thickness resection. This review aims to provide an overview of the different endoscopic resection techniques and their indications, and summarizes the current recommendations in the recently published guideline of the European Society of Gastrointestinal Endoscopy.

  7. Wavelets and the Lifting Scheme

    DEFF Research Database (Denmark)

    la Cour-Harbo, Anders; Jensen, Arne

    The objective of this article is to give a concise introduction to the discrete wavelet transform (DWT) based on a technique called lifting. The lifting technique allows one to give an elementary, but rigorous, definition of the DWT, with modest requirements on the reader. A basic knowledge...... of linear algebra and signal processing will suffice. The lifting based definition is equivalent to the usual filer bank based definition of the DWT. The article does not discuss applications in any detail. The reader is referred to other articles in this collection....

  8. Wavelets and the lifting scheme

    DEFF Research Database (Denmark)

    la Cour-Harbo, Anders; Jensen, Arne

    2012-01-01

    The objective of this article is to give a concise introduction to the discrete wavelet transform (DWT) based on a technique called lifting. The lifting technique allows one to give an elementary, but rigorous, definition of the DWT, with modest requirements on the reader. A basic knowledge...... of linear algebra and signal processing will suffice. The lifting based definition is equivalent to the usual filer bank based definition of the DWT. The article does not discuss applications in any detail. The reader is referred to other articles in this collection....

  9. Wavelets and the lifting scheme

    DEFF Research Database (Denmark)

    la Cour-Harbo, Anders; Jensen, Arne

    2009-01-01

    The objective of this article is to give a concise introduction to the discrete wavelet transform (DWT) based on a technique called lifting. The lifting technique allows one to give an elementary, but rigorous, definition of the DWT, with modest requirements on the reader. A basic knowledge...... of linear algebra and signal processing will suffice. The lifting based definition is equivalent to the usual filer bank based definition of the DWT. The article does not discuss applications in any detail. The reader is referred to other articles in this collection....

  10. Gas Lift Optimization Using Smart Gas Lift Valve

    OpenAIRE

    Mohamed A. G. H. Abdalsadig; Amir Nourian; G. G. Nasr; M. Babaie

    2016-01-01

    Gas lift is one of the most common forms of artificial lift, particularly for offshore wells because of its relative down hole simplicity, flexibility, reliability, and ability to operate over a large range of rates and occupy very little space at the well head. Presently, petroleum industry is investing in exploration and development fields in offshore locations where oil and gas wells are being drilled thousands of feet below the ocean in high pressure and temperature conditions. Therefore,...

  11. Lifting strength in two-person teamwork.

    Science.gov (United States)

    Lee, Tzu-Hsien

    2016-01-01

    This study examined the effects of lifting range, hand-to-toe distance, and lifting direction on single-person lifting strengths and two-person teamwork lifting strengths. Six healthy males and seven healthy females participated in this study. Two-person teamwork lifting strengths were examined in both strength-matched and strength-unmatched groups. Our results showed that lifting strength significantly decreased with increasing lifting range or hand-to-toe distance. However, lifting strengths were not affected by lifting direction. Teamwork lifting strength did not conform to the law of additivity for both strength-matched and strength-unmatched groups. In general, teamwork lifting strength was dictated by the weaker of the two members, implying that weaker members might be exposed to a higher potential danger in teamwork exertions. To avoid such overexertion in teamwork, members with significantly different strength ability should not be assigned to the same team.

  12. Automated endoscope reprocessors.

    Science.gov (United States)

    Desilets, David; Kaul, Vivek; Tierney, William M; Banerjee, Subhas; Diehl, David L; Farraye, Francis A; Kethu, Sripathi R; Kwon, Richard S; Mamula, Petar; Pedrosa, Marcos C; Rodriguez, Sarah A; Wong Kee Song, Louis-Michel

    2010-10-01

    The ASGE Technology Committee provides reviews of existing, new, or emerging endoscopic technologies that have an impact on the practice of GI endoscopy. Evidence-based methodology is used, with a MEDLINE literature search to identify pertinent clinical studies on the topic and a MAUDE (U.S. Food and Drug Administration Center for Devices and Radiological Health) database search to identify the reported complications of a given technology. Both are supplemented by accessing the "related articles" feature of PubMed and by scrutinizing pertinent references cited by the identified studies. Controlled clinical trials are emphasized, but in many cases data from randomized, controlled trials are lacking. In such cases, large case series, preliminary clinical studies, and expert opinions are used. Technical data are gathered from traditional and Web-based publications, proprietary publications, and informal communications with pertinent vendors. Technology Status Evaluation Reports are drafted by 1 or 2 members of the ASGE Technology Committee, reviewed and edited by the committee as a whole, and approved by the Governing Board of the ASGE. When financial guidance is indicated, the most recent coding data and list prices at the time of publication are provided. For this review, the MEDLINE database was searched through February 2010 for articles related to automated endoscope reprocessors, using the words endoscope reprocessing, endoscope cleaning, automated endoscope reprocessors, and high-level disinfection. Technology Status Evaluation Reports are scientific reviews provided solely for educational and informational purposes. Technology Status Evaluation Reports are not rules and should not be construed as establishing a legal standard of care or as encouraging, advocating, requiring, or discouraging any particular treatment or payment for such treatment. Copyright © 2010 American Society for Gastrointestinal Endoscopy. Published by Mosby, Inc. All rights reserved.

  13. Primary endoscopic therapies for obesity and metabolic diseases.

    Science.gov (United States)

    Kumbhari, Vivek; Oberbach, Andreas; Nimgaonkar, Ashish

    2015-09-01

    Endoscopic approaches to obesity may help fulfill the unmet need of over half the US adult population who would benefit from therapy for obesity but are not receiving it. Endoluminal approaches have the potential to be more efficacious than antiobesity medications and have a lower risk-cost profile compared with bariatric surgery. This review outlines the current state of primary endoscopic weight loss and metabolic therapies and sheds light on the challenges faced toward making endoscopic bariatric therapies 'ready for prime time'. Endoscopic approaches to obesity are being increasingly modeled on the proposed mechanisms contributing to the benefits of bariatric surgery.Therapies targeted at the stomach induce weight loss with only a proportional benefit to underlying metabolic disorders.Therapies targeting the proximal small bowel appear to modulate various neurohormonal pathways resulting in an improvement in metabolic profile in excess to that accounted for by weight loss itself. Rigorous scientific assessment of endoscopic approaches to obesity is necessary to allow its integration into the treatment algorithm of obesity. The endoscopic armamentarium against obesity continues to evolve with the endoscopist poised to be a key player in the management of this disease. http://links.lww.com/COG/A12.

  14. Nordic noir and lifted localities

    DEFF Research Database (Denmark)

    Hansen, Kim Toft

    What I do here is to draw attention to a particular visual quality of recent Nordic noir and to relate the visuality of TV-drama to what I – with a term borrowed from Roland Robertson – dub lifted localites.......What I do here is to draw attention to a particular visual quality of recent Nordic noir and to relate the visuality of TV-drama to what I – with a term borrowed from Roland Robertson – dub lifted localites....

  15. The "pixie" ear deformity following face lift surgery revisited.

    Science.gov (United States)

    Mowlavi, Arian; Meldrum, D Garth; Wilhelmi, Bradon J; Russell, Robert C; Zook, Elvin G

    2005-04-01

    The "pixie" ear deformity can be recognized by its "stuck on" or "pulled" appearance, which is caused by the extrinsic pull of the medial cheek and jawline skin flaps at the earlobe attachment point, the otobasion inferius. The tension results in migration of the otobasion inferius from a posterior cephalad position to an anterior caudal position. Although this deformity has been described clinically, it has yet to be objectively defined. Recently, the two components of the earlobe, the attached cephalic segment (intertragal to otobasion inferius distance) and the free caudal segment (otobasion inferius to subaurale distance), were shown to be essential in evaluating for earlobe ptosis and pseudoptosis. These two components can be used to designate an objective criterion for the pixie ear deformity. The deformity, as defined by the authors' parameters, was assessed in 44 patients who had undergone rhytidectomy. A simple and accurate surgical treatment is demonstrated by a cadaver dissection and a clinical case. The deformity can be defined as an increase in the attached cephalic segment (intertragal to otobasion inferius distance) and a decrease in the free caudal segment (otobasion inferius to subaurale distance) to 0 mm following rhytidectomy. The incidence of pixie ear deformity was 5.7 percent in the authors' series of patients. A medially based triangular excision over the attached cephalic segment is presented as a simple and accurate surgical treatment of pixie ear deformity. A more accurate and objective designation may allow for improved detection, avoidance, and treatment of this deformity.

  16. Scope's face-lift pulls deep space in view

    CERN Multimedia

    Belsie, L

    2002-01-01

    Starting in roughly two years, a massive survey of the night sky will begin at Arecibo Observatory in north central Puerto Rico. Previously, most of the research has come from individuals or small teams of scientists, using the telescope for their allotted time. For the new survey, multiple teams, involving hundreds of scientists with varied research interests, will share the torrent of data from Arecibo's receivers (1 page).

  17. The Medical Service gets a face-lift

    CERN Multimedia

    2001-01-01

    The Medical Service is to be entirely renovated over the next four months with the aim of rationalising space and thereby facilitating access to treatment. Anyone for musical chairs? Try Building 57 where, over the next four months, the various sections of the Medical Service will be moving around from one room to another. But the eight members of the Medical Service know that all this to-ing and fro-ing is in a good cause, as their workplace is to be entirely refurbished. To ensure as little disruption as possible to the day-to-day services for people working at CERN, the infirmary, secretariat and laboratory will have to move around as the refurbishment work progresses. But there's no way the restoration of the Medical Service can be called a luxury. 'It hasn't chang-ed a jot since 1969,' says Véronique Fassnacht, Head of the Medical Service. But over the past 30 years, medical analysis equipment has been progressively miniaturised, with new, much smaller devices reducing the need for floor space...

  18. Choledocholithiasis diagnostics – endoscopic ultrasound or endoscopic retrograde cholangiopancreatography?

    Directory of Open Access Journals (Sweden)

    Jarosław Leszczyszyn

    2014-06-01

    Full Text Available It is estimated that 3.4% of patients qualified for cholecystectomy due to cholelithiasis have a coexisting choledocholithiasis. For decades, endoscopic ascending retrograde cholangiopancreatography has been the golden diagnostic standard in cases of suspected choledocholithiasis. The method is associated with a relatively high rate of complications, including acute pancreatitis, the incidence of which is estimated to range between 0.74% and 1.86%. The mechanism of this ERCP-induced complication is not fully understood, although factors increasing the risk of acute pancreatitis, such as sphincter of Oddi dysfunction, previous acute pancreatitis, narrow bile ducts or difficult catheterization of Vater’s ampulla are known. It has been suggested to discontinue the diagnostic endoscopic retrograde ascending cholangiopancreatography and replace it with endoscopic ultrasonography due to possible and potentially dangerous complications. Endoscopic ultrasonography has sensitivity of 94% and specificity of 95% regardless of gallstone diameter, as opposed to magnetic resonance cholangiography. However, both of these parameters depend on the experience of the performing physician. The use of endoscopic ultrasonography allows to limit the number of performed endoscopic retrograde cholangiopancreatography procedures by more than 2/3. Ascending endoscopic retrograde cholangiopancreatography combined with an endoscopic incision into the Vater’s ampulla followed by a mechanical evacuation of stone deposits from the ducts still remains a golden standard in the treatment of choledocholithiasis. Despite some limitations such as potentially increased treatment costs as well as the necessity of the procedure to be performed by a surgeon experienced in both endoscopic retrograde cholangiopancreatography as well as endoscopic ultrasonography, the diagnostic endoscopic ultrasonography followed by a simultaneous endoscopic retrograde cholangiopancreatography

  19. Gas Lift Optimization to Improve Well Performance

    OpenAIRE

    Mohamed A. G. H. Abdalsadig; Amir Nourian; G. G. Nasr; Meisam Babaie

    2016-01-01

    Gas lift optimization is becoming more important now a day in petroleum industry. A proper lift optimization can reduce the operating cost, increase the net present value (NPV) and maximize the recovery from the asset. A widely accepted definition of gas lift optimization is to obtain the maximum output under specified operating conditions. In addition, gas lift, a costly and indispensable means to recover oil from high depth reservoir entails solving the gas lift optimization problems. Gas l...

  20. [GERD: endoscopic antireflux therapies].

    Science.gov (United States)

    Caca, K

    2006-08-02

    A couple of minimally-invasive, endoscopic antireflux procedures have been developed during the last years. Beside endoscopic suturing these included injection/implantation technique of biopolymers and application of radiofrequency. Radiofrequency (Stretta) has proved only a very modest effect, while implantation techniques have been abandoned due to lack of long-term efficacy (Gatekeeper) or serious side effects (Enteryx). While first generation endoluminal suturing techniques (EndoCinch, ESD) demonstrated a proof of principle their lack of durability, due to suture loss, led to the development of a potentially durable transmural plication technique (Plicator). In a prospective-randomized, sham-controlled trial the Plicator procedure proved superiority concerning reflux symptoms, medication use and esophageal acid exposure (24-h-pH-metry). While long-term data have to be awaited to draw final conclusions, technical improvements will drive innovation in this field.

  1. [Functional endoscopic sinus surgery].

    Science.gov (United States)

    Han, D M

    1992-01-01

    Eighty-two cases of functional endoscopic sinus surgery were analyzed. It include 62 males and 20 females; the oldest was 72 years of age and the youngest eight years of age. A hard endoscope with a diameter of 4mm and the CCD micro-videorecorder produced by Circon and Olympus Company were used. Operations were done under general anesthesia in all cases. Twenty-three cases (28.1%) recovered in one stage and recovery was delayed in 28 cases (34.2%); late inflammation occurred in 23 cases (28.1%); 8 cases failed (9.8%). The cure rate was 62.2%. Two cases (2.4%) had operative complications namely injury to the lamina papyracea and anterior ethmoidal artery, all recovered uneventfully.

  2. Endoscopic tissue diagnosis of cholangiocarcinoma.

    LENUS (Irish Health Repository)

    Harewood, Gavin C

    2008-09-01

    The extremely poor outcome in patients with cholangiocarcinoma, in large part, reflects the late presentation of these tumors and the challenging nature of establishing a tissue diagnosis. Establishing a diagnosis of cholangiocarcinoma requires obtaining evidence of malignancy from sampling of the epithelium of the biliary tract, which has proven to be challenging. Although endoscopic ultrasound-guided fine needle aspiration performs slightly better than endoscopic retrograde cholangiopancreatography in diagnosing cholangiocarcinoma, both endoscopic approaches demonstrate disappointing performance characteristics.

  3. Outcomes of polydioxanone knotless thread lifting for facial rejuvenation.

    Science.gov (United States)

    Suh, Dong Hye; Jang, Hee Won; Lee, Sang Jun; Lee, Won Seok; Ryu, Hwa Jung

    2015-06-01

    Thread lifting is a minimally invasive technique for facial rejuvenation. Various devices for thread lifting using polydioxanone (PDO) are popular in aesthetic clinics in Korea, but there have been a few studies regarding its use. To describe PDO thread and techniques adopted to counteract the descent and laxity of the face. A retrospective chart review was conducted over a 24-month period. A total of 31 thread lifting procedures were performed. On each side, 5 bidirectional cog threads were used in the procedure for the flabby skin of the nasolabial folds. And, the procedure was performed on the marionette line using 2 twin threads. In most patients (87%), the results obtained were considered satisfactory. Consensus ratings by 2 physicians found that objective outcomes were divided among "excellent," "good," "fair," and "poor." Texture wise, the outcome ratings were 13 as excellent and 9 as good. Lifting wise, ratings were 11 as excellent and 6 as good. The incidence of complications was low and not serious. Facial rejuvenation using PDO thread is a safe and effective procedure associated with only minor complications when performed on patients with modest face sagging, fine wrinkles, and marked facial pores.

  4. Normalized lift: an energy interpretation of the lift coefficient simplifies comparisons of the lifting ability of rotating and flapping surfaces.

    Directory of Open Access Journals (Sweden)

    Phillip Burgers

    Full Text Available For a century, researchers have used the standard lift coefficient C(L to evaluate the lift, L, generated by fixed wings over an area S against dynamic pressure, ½ρv(2, where v is the effective velocity of the wing. Because the lift coefficient was developed initially for fixed wings in steady flow, its application to other lifting systems requires either simplifying assumptions or complex adjustments as is the case for flapping wings and rotating cylinders.This paper interprets the standard lift coefficient of a fixed wing slightly differently, as the work exerted by the wing on the surrounding flow field (L/ρ·S, compared against the total kinetic energy required for generating said lift, ½v(2. This reinterpreted coefficient, the normalized lift, is derived from the work-energy theorem and compares the lifting capabilities of dissimilar lift systems on a similar energy footing. The normalized lift is the same as the standard lift coefficient for fixed wings, but differs for wings with more complex motions; it also accounts for such complex motions explicitly and without complex modifications or adjustments. We compare the normalized lift with the previously-reported values of lift coefficient for a rotating cylinder in Magnus effect, a bat during hovering and forward flight, and a hovering dipteran.The maximum standard lift coefficient for a fixed wing without flaps in steady flow is around 1.5, yet for a rotating cylinder it may exceed 9.0, a value that implies that a rotating cylinder generates nearly 6 times the maximum lift of a wing. The maximum normalized lift for a rotating cylinder is 1.5. We suggest that the normalized lift can be used to evaluate propellers, rotors, flapping wings of animals and micro air vehicles, and underwater thrust-generating fins in the same way the lift coefficient is currently used to evaluate fixed wings.

  5. TCA High Lift Preliminary Assessment

    Science.gov (United States)

    Wyatt, G. H.; Polito, R. C.; Yeh, D. T.; Elzey, M. E.; Tran, J. T.; Meredith, Paul T.

    1999-01-01

    This paper presents a TCA (Technology Concept Airplane) High lift Preliminary Assessment. The topics discussed are: 1) Model Description; 2) Data Repeatability; 3) Effect of Inboard L.E. (Leading Edge) Flap Span; 4) Comparison of 14'x22' TCA-1 With NTF (National Transonic Facility) Modified Ref. H; 5) Comparison of 14'x22' and NTF Ref. H Results; 6) Effect of Outboard Sealed Slat on TCA; 7) TCA Full Scale Build-ups; 8) Full Scale L/D Comparisons; 9) TCA Full Scale; and 10) Touchdown Lift Curves. This paper is in viewgraph form.

  6. New F-theory lifts

    International Nuclear Information System (INIS)

    Collinucci, Andres

    2009-01-01

    In this note, a procedure is developed to explicitly construct non-trivial F-theory lifts of perturbative IIB orientifold models on Calabi-Yau complete intersections in toric varieties. This procedure works on Calabi-Yau orientifolds where the involution coordinate can have arbitrary projective weight, as opposed to the well-known hypersurface cases where it has half the weight of the equation defining the CY threefold. This opens up the possibility of lifting more general setups, such as models that have O3-planes.

  7. Endoscopic capacity in West Africa.

    African Journals Online (AJOL)

    patients who received endoscopy, 7 required endoscopic intervention with 6 having gastric or esophageal varices. Currently the ... are living longer3. Chronic GI illnesses, such as non-infec- tious gastric ulcer disease, cancer, dyspepsia and cirrhosis, are on the rise and have created an increased demand for endoscopic ...

  8. Endoscopic transmission of Helicobacter pylori

    NARCIS (Netherlands)

    Tytgat, G. N.

    1995-01-01

    The contamination of endoscopes and biopsy forceps with Helicobacter pylori occurs readily after endoscopic examination of H. pylori-positive patients. Unequivocal proof of iatrogenic transmission of the organism has been provided. Estimates for transmission frequency approximate to 4 per 1000

  9. Robot-assisted endoscopic surgery

    NARCIS (Netherlands)

    Ruurda, J.P.

    2003-01-01

    During the last three years, robot-assisted surgery systems are increasingly being applied in endoscopic surgery. They were introduced with the objective to overcome the challenges of standard endoscopic surgery. With the improvements in manipulation and visualisation that robotic-assistance offers,

  10. Endoscopic extradural supraorbital approach to the temporal pole and adjacent area: technical note.

    Science.gov (United States)

    Komatsu, Fuminari; Imai, Masaaki; Shigematsu, Hideaki; Aoki, Rie; Oda, Shinri; Shimoda, Masami; Matsumae, Mitsunori

    2017-08-25

    The authors' initial experience with the endoscopic extradural supraorbital approach to the temporal pole and adjacent area is reported. Fully endoscopic surgery using the extradural space via a supraorbital keyhole was performed for tumors in or around the temporal pole, including temporal pole cavernous angioma, sphenoid ridge meningioma, and cavernous sinus pituitary adenoma, mainly using 4-mm, 0° and 30° endoscopes and single-shaft instruments. After making a supraorbital keyhole, a 4-mm, 30° endoscope was advanced into the extradural space of the anterior cranial fossa during lifting of the dura mater. Following identification of the sphenoid ridge, orbital roof, and anterior clinoid process, the bone lateral to the orbital roof was drilled off until the dura mater of the anterior aspect of the temporal lobe was exposed. The dura mater of the temporal lobe was incised and opened, exposing the temporal pole under a 4-mm, 0° endoscope. Tumors in or around the temporal pole were safely removed under a superb view through the extradural corridor. The endoscopic extradural supraorbital approach was technically feasible and safe. The anterior trajectory to the temporal pole using the extradural space under endoscopy provided excellent visibility, allowing minimally invasive surgery. Further surgical experience and development of specialized instruments would promote this approach as an alternative surgical option.

  11. Endoscopic resection of subepithelial tumors.

    Science.gov (United States)

    Schmidt, Arthur; Bauder, Markus; Riecken, Bettina; Caca, Karel

    2014-12-16

    Management of subepithelial tumors (SETs) remains challenging. Endoscopic ultrasound (EUS) has improved differential diagnosis of these tumors but a definitive diagnosis on EUS findings alone can be achieved in the minority of cases. Complete endoscopic resection may provide a reasonable approach for tissue acquisition and may also be therapeutic in case of malignant lesions. Small SET restricted to the submucosa can be removed with established basic resection techniques. However, resection of SET arising from deeper layers of the gastrointestinal wall requires advanced endoscopic methods and harbours the risk of perforation. Innovative techniques such as submucosal tunneling and full thickness resection have expanded the frontiers of endoscopic therapy in the past years. This review will give an overview about endoscopic resection techniques of SET with a focus on novel methods.

  12. How Do Wings Generate Lift?

    Indian Academy of Sciences (India)

    Newton's second law of motion. Hence if a wing can generate lift equal to its weight (total weight of the vehicle) it can balance the gravitational pull and can maintain level flight. The equations for fluid flow that are equivalent to the second law are the well- known Navier–Stokes (N–S) equations [1]. These equations have.

  13. How Do Wings Generate Lift?

    Indian Academy of Sciences (India)

    into the dead-water region crossing the vortex sheet with velocity discontinuity. Quite interestingly even this simplistic model has been shown to give the correct ..... interesting to see the contrast. The presence of viscosity which is a requirement to generate lift itself has led to the breakdown of the model at high incidence.

  14. Outback lift puts backs out.

    Science.gov (United States)

    Swain, Maxine; Greaves, Elaine; Davies, Kathryn; Wood, Nicola

    1991-12-18

    While we appreciate that Barbara Woodcraft's amusing article 'Uplifting experience?' (Nursing Standard October 30) was intended as a humorous look at a serious problem, we were concerned to see that you accompanied by a photograph of two nurses performing the Australian, or Shoulder lift.

  15. High-quality endoscope reprocessing decreases endoscope contamination.

    Science.gov (United States)

    Decristoforo, P; Kaltseis, J; Fritz, A; Edlinger, M; Posch, W; Wilflingseder, D; Lass-Flörl, C; Orth-Höller, D

    2018-02-24

    Several outbreaks of severe infections due to contamination of gastrointestinal (GI) endoscopes, mainly duodenoscopes, have been described. The rate of microbial endoscope contamination varies dramatically in literature. The aim of this multicentre prospective study was to evaluate the hygiene quality of endoscopes and automated endoscope reprocessors (AERs) in Tyrol/Austria. In 2015 and 2016, a total of 463 GI endoscopes and 105 AERs from 29 endoscopy centres were analysed by a routine (R) and a combined routine and advanced (CRA) sampling procedure and investigated for microbial contamination by culture-based and molecular-based analyses. The contamination rate of GI endoscopes was 1.3%-4.6% according to the national guideline, suggesting that 1.3-4.6 patients out of 100 could have had contacts with hygiene-relevant microorganisms through an endoscopic intervention. Comparison of R and CRA sampling showed 1.8% of R versus 4.6% of CRA failing the acceptance criteria in phase I and 1.3% of R versus 3.0% of CRA samples failing in phase II. The most commonly identified indicator organism was Pseudomonas spp., mainly Pseudomonas oleovorans. None of the tested viruses were detected in 40 samples. While AERs in phase I failed (n = 9, 17.6%) mainly due to technical faults, phase II revealed lapses (n = 6, 11.5%) only on account of microbial contamination of the last rinsing water, mainly with Pseudomonas spp. In the present study the contamination rate of endoscopes was low compared with results from other European countries, possibly due to the high quality of endoscope reprocessing, drying and storage. Copyright © 2018 European Society of Clinical Microbiology and Infectious Diseases. Published by Elsevier Ltd. All rights reserved.

  16. Duodenal endoscopic full-thickness resection (with video).

    Science.gov (United States)

    Schmidt, Arthur; Meier, Benjamin; Cahyadi, Oscar; Caca, Karel

    2015-10-01

    Endoscopic resection of duodenal non-lifting adenomas and subepithelial tumors is challenging and harbors a significant risk of adverse events. We report on a novel technique for duodenal endoscopic full-thickness resection (EFTR) by using an over-the-scope device. Data of 4 consecutive patients who underwent duodenal EFTR were analyzed retrospectively. Main outcome measures were technical success, R0 resection, histologic confirmation of full-thickness resection, and adverse events. Resections were done with a novel, over-the-scope device (full-thickness resection device, FTRD). Four patients (median age 60 years) with non-lifting adenomas (2 patients) or subepithelial tumors (2 patients) underwent EFTR in the duodenum. All lesions could be resected successfully. Mean procedure time was 67.5 minutes (range 50-85 minutes). Minor bleeding was observed in 2 cases; blood transfusions were not required. There was no immediate or delayed perforation. Mean diameter of the resection specimen was 28.3 mm (range 22-40 mm). Histology confirmed complete (R0) full-thickness resection in 3 of 4 cases. To date, 2-month endoscopic follow-up has been obtained in 3 patients. In all cases, the over-the-scope clip was still in place and could be removed without adverse events; recurrences were not observed. EFTR in the duodenum with the FTRD is a promising technique that has the potential to spare surgical resections. Modifications of the device should be made to facilitate introduction by mouth. Prospective studies are needed to further evaluate efficacy and safety for duodenal resections. Copyright © 2015 American Society for Gastrointestinal Endoscopy. Published by Elsevier Inc. All rights reserved.

  17. (AJST) EXPERIMENTAL INVESTIGATION OF AIR LIFT PUMP

    African Journals Online (AJOL)

    ABSTRACT:- Air lift pump has been predominantly used for lifting of waste-water, aggressive fluid, transportation of solids and radioactive fluids in nuclear recycling plants and also for deep sea mining. The air lift pump performance depends on some fluid and geometric properties. Experiments were carried out by setting up ...

  18. 49 CFR 37.203 - Lift maintenance.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false Lift maintenance. 37.203 Section 37.203... DISABILITIES (ADA) Over-the-Road Buses (OTRBs) § 37.203 Lift maintenance. (a) The entity shall establish a system of regular and frequent maintenance checks of lifts sufficient to determine if they are operative...

  19. 46 CFR 64.43 - Lifting fittings.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 2 2010-10-01 2010-10-01 false Lifting fittings. 64.43 Section 64.43 Shipping COAST... HANDLING SYSTEMS Standards for an MPT § 64.43 Lifting fittings. Each MPT must have attached lifting fittings so that the tank remains horizontal and stable while being moved. ...

  20. The liquid lift: Looking natural without lumps

    Directory of Open Access Journals (Sweden)

    Iñigo de Felipe

    2015-01-01

    Full Text Available Context: Hyaluronic acid (HA is the most common filler used to rejuvenate. Today, a three-dimensional approach prevails over previous techniques in which this material was used in specific areas of the face such as the nasolabial fold, the marionette line, and the eye trough giving a strange appearance that does not look natural. Even with a volumizing purpose, the injection of HA can sometimes produce clinically detectable nodules or lumps where the filler is deposited. Aims: To develop a new technique of injecting HA that can provide more natural results and avoid the lumpiness and nodular appearance that sometimes occurs with the injection of HA. To detect whether mixing HA with diluted anesthetic agent modifies its behavior. Settings and Design: Prospective, case control, single-center study on a private clinic setting. Materials and Methods: Eighty six patients were enrolled in this study. All of them had a previous treatment with nondiluted HA using a needle at least a year before. Patients were injected with 8 mL of reticulated HA (RHA mixed with 6 mL of saline and 2 mL of anesthetic agent. The mixture was administered through a cannula inserted in the face, one at mid-cheek and another at frontal-temporal point of entry. Owing to the lifting effect of this mixture we called this procedure liquid lift (LL. Patients were evaluated 1 month, 6 months, and a year later and asked to compare the LL with previous experiences in terms of natural look, pain, and appearance of nodules. Statistical Analysis Used: Student′s t-test. Results: One month after the treatment, 83 out of 86 patients (96.5% thought LL produced a more natural look than the previous treatment with the needle. Sixty two (72% considered LL less painful than the previous treatment and only eight (9.3% could detect lumps or nodules 1 month after LL was performed compared with 46 (53.5% that described this problem with previous needle injections. The incidence of bruising was

  1. Customized lifting multiwavelet packet information entropy for equipment condition identification

    International Nuclear Information System (INIS)

    Chen, Jinglong; Zi, Yanyang; He, Zhengjia; Chen, Xuefeng; Zuo, Ming J; Yuan, Jing

    2013-01-01

    Condition identification of mechanical equipment from vibration measurement data is significant to avoid economic loss caused by unscheduled breakdowns and catastrophic accidents. However, this task still faces challenges due to the complexity of equipment and the harsh environment. This paper provides a possibility for equipment condition identification by proposing a method called customized lifting multiwavelet packet information entropy. Benefiting from the properties of multi-resolution analysis and multiple wavelet basis functions, the multiwavelet method has advantages in characterizing non-stationary vibration signals. In order to realize the accurate detection and identification of the condition features, a customized lifting multiwavelet packet is constructed via a multiwavelet lifting scheme. Then the vibration signal from the mechanical equipment is processed by the customized lifting multiwavelet packet transform. The relative energy in each frequency band of the multiwavelet packet transform coefficients that equals a percentage of the whole signal energy is taken as the probability. The normalized information entropy is obtained based on the relative energy to describe the condition of a mechanical system. The proposed method is applied to the condition identification of a rolling mill and a demountable disk–drum aero-engine. The results support the feasibility of the proposed method in equipment condition identification. (paper)

  2. Hepatic applications of endoscopic ultrasound

    DEFF Research Database (Denmark)

    Srinivasan, Indu; Tang, Shou-Jiang; Vilmann, Andreas S

    2015-01-01

    The diagnosis and staging of various gastrointestinal malignancies have been made possible with the use of endoscopic ultrasound, which is a relatively safe procedure. The field of endoscopic ultrasound is fast expanding due to advancements in therapeutic endoscopic ultrasound. Though various...... studies have established its role in gastrointestinal malignancies and pancreatic conditions, its potential in the field of hepatic lesions still remains vastly untapped. In this paper the authors attempt to review important and landmark trials, case series and case studies involving hepatic applications...

  3. Quantified Faces

    DEFF Research Database (Denmark)

    Sørensen, Mette-Marie Zacher

    2016-01-01

    Abstract: The article presents three contemporary art projects that, in various ways, thematise questions regarding numerical representation of the human face in relation to the identification of faces, for example through the use of biometric video analysis software, or DNA technology. The Dutch...... artist Marnix de Nijs' Physiognomic Scrutinizer is an interactive installation whereby the viewer's face is scanned and identified with historical figures. The American artist Zach Blas' project Fag Face Mask consists of three-dimensional portraits that blend biometric facial data from 30 gay men's faces...

  4. The Effect of Lifting Speed on Cumulative and Peak Biomechanical Loading for Symmetric Lifting Tasks

    Directory of Open Access Journals (Sweden)

    Kasey O. Greenland

    2013-06-01

    Conclusion: Based on peak values, BCF is highest for fast speeds, but the BCF cumulative loading is highest for slow speeds, with the largest difference between fast and slow lifts. This may imply that a slow lifting speed is at least as hazardous as a fast lifting speed. It is important to consider the duration of lift when determining risks for back and shoulder injuries due to lifting and that peak values alone are likely not sufficient.

  5. First-Order Twistor Lifts

    Directory of Open Access Journals (Sweden)

    Bruno Ascenso Simões

    2010-01-01

    Full Text Available The use of twistor methods in the study of Jacobi fields has proved quite fruitful, leading to a series of results. L. Lemaire and J. C. Wood proved several properties of Jacobi fields along harmonic maps from the two-sphere to the complex projective plane and to the three- and four-dimensional spheres, by carefully relating the infinitesimal deformations of the harmonic maps to those of the holomorphic data describing them. In order to advance this programme, we prove a series of relations between infinitesimal properties of the map and those of its twistor lift. Namely, we prove that isotropy and harmonicity to first order of the map correspond to holomorphicity to first order of its lift into the twistor space, relatively to the standard almost complex structures J1 and J2. This is done by obtaining first-order analogues of classical twistorial constructions.

  6. First-Order Twistor Lifts

    Directory of Open Access Journals (Sweden)

    Simões BrunoAscenso

    2010-01-01

    Full Text Available The use of twistor methods in the study of Jacobi fields has proved quite fruitful, leading to a series of results. L. Lemaire and J. C. Wood proved several properties of Jacobi fields along harmonic maps from the two-sphere to the complex projective plane and to the three- and four-dimensional spheres, by carefully relating the infinitesimal deformations of the harmonic maps to those of the holomorphic data describing them. In order to advance this programme, we prove a series of relations between infinitesimal properties of the map and those of its twistor lift. Namely, we prove that isotropy and harmonicity to first order of the map correspond to holomorphicity to first order of its lift into the twistor space, relatively to the standard almost complex structures and . This is done by obtaining first-order analogues of classical twistorial constructions.

  7. Endoscopic retrograde cholanglopancreatography

    International Nuclear Information System (INIS)

    Horii, S.C.; Garra, B.S.; Zeman, R.K.; Krasner, B.H.; Lo, S.C.B.; Davros, W.J.; Silverman, P.M.; Cattau, E.L.; Fleischer, D.E.; Benjamin, S.B.S.B.

    1989-01-01

    As part of the clinical evaluation of image management and communications system (IMACS), the authors undertook a prospective study to compare conventional film versus digitized film viewed on a workstation. Twenty-five each of normal and abnormal endoscopic retrograde cholangiopancreatographic (ERCP) studies were digitized with a 1,684 x 2,048-pixel matrix and evaluated in a single-blind fashion on the workstation. The resulting interpretations were then compared with those resulting from interpretation of film (spot film and 100-mm photospot) images. They report that no significant differences were found in ability to see anatomic detail or pathology. A second study involved performing 10 ERCP studies in a lithotripsy suite equipped with biplane digital fluoroscopy. The digital video displays were comparable in quality to that of film. Progress is being made in using the IMACS for archiving and retrieval of all current ERCP images

  8. Gender differences in lifting technique.

    Science.gov (United States)

    Lindbeck, L; Kjellberg, K

    2001-02-10

    The importance of different motion patterns in the assessment of work technique is rarely addressed in the literature and even less information can be found regarding gender differences. In this study the possible gender differences in lifting technique from lifting experiments on 12 female and 10 male participants were examined. The participants performed squat and stoop lifts of a box. Movements were measured by means of opto-electronic measurement systems. Kinematic data derived from the measurements revealed some differences between the men and the women, e.g. in trunk motion and knee angle ranges. The hip-knee interjoint coordination was more synchronized for women than for men in terms of the relative phase angle. It is concluded that so far gender differences in motion patterns have not been sufficiently explored and that men and women need to be considered separately in the evaluation of work technique in manual handling tasks. Advantages and disadvantages of different coordination patterns need to be further investigated.

  9. Revision endoscopic sinonasal surgery.

    Science.gov (United States)

    Cantillano, Pablo; Rubio, Fabián; Naser, Alfredo; Nazar, Rodolfo

    Endoscopic sinonasal surgery is the procedure of choice in the treatment of chronic rhinosinusitis and sinonasal polyposis refractory to medical treatment, with high rates of success (76% to 97.5%). However, 2.5%-24% of those patients will require revision surgery (RESS). In this study, we present the clinical, anatomical, radiological and histological features of patients receiving RESS in our centre during a 3-year period. A retrospective review of clinical, anatomical, radiological and histopathological data of patients receiving revision endoscopic sinonasal surgery between 2012 and 2014 was carried out. From 299 surgery procedures performed, 27 (9%) were revision surgeries. The mean patient age was 46 years, with a male/female ratio of 1.4/1. The most frequent preoperative and postoperative diagnosis was chronic polypoid rhinosinusitis. The mean time since the previous surgery was 6.1 years, with 11.9 months of mean follow-up since that surgery. Stenotic antrostomy was found during revision in 81.5% of the patients and incomplete anterior ethmoidectomy and persistent uncinate process, in 59.3%. In radiology, 70.4% of patients had persistent anterior ethmoidal cells. Antrostomy or widening of antrostomy was performed in 96.3% of cases and anterior ethmoidectomy or completion of it was performed in 66.7%. Polyps, stenotic antrostomy and incomplete ethmoidectomy were the most frequent causes of revision surgery, in concordance with the procedures performed. The patients had long periods of time without follow-up between surgeries. Further investigation is necessary to generate measures to reduce the number of revision surgeries. Copyright © 2016 Elsevier España, S.L.U. and Sociedad Española de Otorrinolaringología y Cirugía de Cabeza y Cuello. All rights reserved.

  10. Endoscopic third ventriculostomy

    Directory of Open Access Journals (Sweden)

    Yad Ram Yadav

    2012-01-01

    Full Text Available Endoscopic third ventriculostomy (ETV is considered as a treatment of choice for obstructive hydrocephalus. It is indicated in hydrocephalus secondary to congenital aqueductal stenosis, posterior third ventricle tumor, cerebellar infarct, Dandy-Walker malformation, vein of Galen aneurism, syringomyelia with or without Chiari malformation type I, intraventricular hematoma, post infective, normal pressure hydrocephalus, myelomeningocele, multiloculated hydrocephalus, encephalocele, posterior fossa tumor and craniosynostosis. It is also indicated in block shunt or slit ventricle syndrome. Proper Pre-operative imaging for detailed assessment of the posterior communicating arteries distance from mid line, presence or absence of Liliequist membrane or other membranes, located in the prepontine cistern is useful. Measurement of lumbar elastance and resistance can predict patency of cranial subarachnoid space and complex hydrocephalus, which decides an ultimate outcome. Water jet dissection is an effective technique of ETV in thick floor. Ultrasonic contact probe can be useful in selected patients. Intra-operative ventriculo-stomography could help in confirming the adequacy of endoscopic procedure, thereby facilitating the need for shunt. Intraoperative observations of the patent aqueduct and prepontine cistern scarring are predictors of the risk of ETV failure. Such patients may be considered for shunt surgery. Magnetic resonance ventriculography and cine phase contrast magnetic resonance imaging are effective in assessing subarachnoid space and stoma patency after ETV. Proper case selection, post-operative care including monitoring of ICP and need for external ventricular drain, repeated lumbar puncture and CSF drainage, Ommaya reservoir in selected patients could help to increase success rate and reduce complications. Most of the complications develop in an early post-operative, but fatal complications can develop late which indicate an importance of

  11. Endoscopic ultrasound and pancreas divisum

    DEFF Research Database (Denmark)

    Rana, Surinder S; Gonen, Can; Vilmann, Peter

    2012-01-01

    cholangiopancreatography is the gold standard for its diagnosis, but is invasive and associated with significant adverse effects. Endoscopic ultrasound (EUS) allows the detailed evaluation of the pancreaticobiliary ductal system without injecting contrast in these ducts. Moreover, it provides detailed images...

  12. Variable Lifting Index (VLI): A New Method for Evaluating Variable Lifting Tasks.

    Science.gov (United States)

    Waters, Thomas; Occhipinti, Enrico; Colombini, Daniela; Alvarez-Casado, Enrique; Fox, Robert

    2016-08-01

    We seek to develop a new approach for analyzing the physical demands of highly variable lifting tasks through an adaptation of the Revised NIOSH (National Institute for Occupational Safety and Health) Lifting Equation (RNLE) into a Variable Lifting Index (VLI). There are many jobs that contain individual lifts that vary from lift to lift due to the task requirements. The NIOSH Lifting Equation is not suitable in its present form to analyze variable lifting tasks. In extending the prior work on the VLI, two procedures are presented to allow users to analyze variable lifting tasks. One approach involves the sampling of lifting tasks performed by a worker over a shift and the calculation of the Frequency Independent Lift Index (FILI) for each sampled lift and the aggregation of the FILI values into six categories. The Composite Lift Index (CLI) equation is used with lifting index (LI) category frequency data to calculate the VLI. The second approach employs a detailed systematic collection of lifting task data from production and/or organizational sources. The data are organized into simplified task parameter categories and further aggregated into six FILI categories, which also use the CLI equation to calculate the VLI. The two procedures will allow practitioners to systematically employ the VLI method to a variety of work situations where highly variable lifting tasks are performed. The scientific basis for the VLI procedure is similar to that for the CLI originally presented by NIOSH; however, the VLI method remains to be validated. The VLI method allows an analyst to assess highly variable manual lifting jobs in which the task characteristics vary from lift to lift during a shift. © 2015, Human Factors and Ergonomics Society.

  13. Side effects of endoscopic variceal ligation by using Indonesian Endoscopic Ligator versus Endoscopic Variceal Sclerotherapy.

    Science.gov (United States)

    Simadibrata, Marcellus; Syam, Ari F; Fauzi, Achmad; Abdullah, Murdani; Rani, Abdul A

    2011-01-01

    to investigate the side effects and survival of endoscopic variceal ligation by using Indonesian Endoscopic Ligator versus Endoscopic Variceal Sclerotherapy. we studied the medical records and endoscopy reports of patients who underwent endoscopic variceal ligation (EVL) or endoscopic sclerotherapy (EST) from January 2003 until December 2006. EST was done using ethoxysclerol injection; and ligation was done using a home-made Indonesian endoscopic ligating device. Patient characteristics, side effects of EVL and EST, as well as survival and length of stay were collected. Data of side effects was analyzed by chi-square test. there were no statistically significant differences of patients characteristics among both groups. The side effects in EVL group (29.2%) were less frequent than the EST group (60.9%) (p = 0.009). The death side effect in the EVL group (1.0%) was less frequent than in the EST group (21.7%) (pEVL and EST were 91.7% and 16.7%, respectively (pEVL had fewer side effects than EST in the treatment of esophageal varices bleeding. Death in the EVL group was lower than in the EST group.

  14. Three Lifting Bodies on Lakebed

    Science.gov (United States)

    1969-01-01

    The wingless, lifting body aircraft sitting on Rogers Dry Lake at what is now NASA's Dryden Flight Research Center, Edwards, California, from left to right are the X-24A, M2-F3 and the HL-10.The lifting body aircraft studied the feasibility of maneuvering and landing an aerodynamic craft designed for reentry from space. These lifting bodies were air launched by a B-52 mother ship, then flew powered by their own rocket engines before making an unpowered approach and landing. They helped validate the concept that a space shuttle could make accurate landings without power. The X-24A flew from April 17, 1969 to June 4, 1971. The M2-F3 flew from June 2, 1970 until December 20, 1972. The HL-10 flew from December 22, 1966 until July 17, 1970 and logged the highest and fastest records in the lifting body program. The X-24 was one of a group of lifting bodies flown by the NASA Flight Research Center (FRC--now Dryden Flight Research Center), Edwards, California, in a joint program with the U.S. Air Force at Edwards Air Force Base from 1963 to 1975. The lifting bodies were used to demonstrate the ability of pilots to maneuver and safely land wingless vehicles designed to fly back to Earth from space and be landed like an airplane at a predetermined site. Lifting bodies' aerodynamic lift, essential to flight in the atmosphere, was obtained from their shape. The addition of fins and control surfaces allowed the pilots to stabilize and control the vehicles and regulate their flight paths. Built by Martin Aircraft Company, Maryland, for the U.S. Air Force, the X-24A was a bulbous vehicle shaped like a teardrop with three vertical fins at the rear for directional control. It weighed 6,270 pounds, was 24.5 feet long and 11.5 feet wide (measuring just the fuselage, not the distance between the tips of the outboard fins). Its first unpowered glide flight was on April 17, 1969, with Air Force Maj. Jerauld Gentry at the controls. Gentry also piloted its first powered flight on March 19

  15. About Face

    Medline Plus

    Full Text Available ... Type Search All Videos PTSD Basics PTSD Treatment What is AboutFace? Resources for Professionals Get Help Home ... All Videos Learn More PTSD Basics PTSD Treatment What is AboutFace? Resources for Professionals Get Help PTSD ...

  16. Transcrestal sinus lift and implant placement using the sinus balloon technique

    Science.gov (United States)

    Galán-Gil, Sónnica; Carrillo-García, Celia; Peñarrocha-Diago, David; Peñarrocha-Diago, Miguel

    2012-01-01

    Objective: A description is made of transcrestal sinus lift using the sinus balloon technique, evaluating the bone height achieved and implant success one year after prosthetic loading. Material and method: Between January and July 2007, transcrestal sinus lift using the sinus balloon technique for dental implant placement was carried out in 6 patients. A panoramic X-ray study and maxillary computed tomography scan were carried out before the operation, in order to discard possible sinus pathology. During the intervention, the integrity of the sinus membrane was evaluated using a Medi Pack Pal endoscope (Farol Store and Co., Tuttlingen, Germany), and the intraoperative complications were analyzed. The dental implants were placed in the same surgical step in the presence of 3 mm or more of residual bone. Following the operation, panoramic X-rays were used to assess the bone height gained. One year after prosthetic loading, the implant success rate was determined based on the criteria of Buser. Results: One patient was excluded due to Schneider’s membrane perforation as confirmed by endoscopy. Trans-crestal sinus lift was carried out in 5 males with a mean age of 41.6 years (range 27-51), without antecedents of sinus disease. There were no intraoperative complications. In four patients the implants were placed simultaneous to sinus lift, while in another case implant placement was postponed due to insufficient remaining bone height. The mean gain in height after the operation was 8.7 mm. One year after prosthetic loading, the implant success rate was 100%. Conclusions: Transcrestal sinus lift using the sinus balloon technique is a minimally invasive procedure. In 5 patients the bone height gained proved sufficient to allow implant placement even in the presence of 3 mm of residual bone. Key words: Sinus lift, balloon, sinus complications. PMID:22157670

  17. Characterization of gas-lift instabilities

    OpenAIRE

    Hu, Bin

    2005-01-01

    This dissertation mainly investigates the occurrence and characteristics of density-wave instability in gas-lift wells. The investigation is based on a simplified gas-lift system, in which water and air are used as producing fluid and lifting gas respectively, and heat transfer effect is neglected. To carry out the investigation, both linear stability analysis and numerical simulation are performed. The linear stability analysis is based on a homogenous two-phase flow model and the numeri...

  18. Fuel Cell Powered Lift Truck

    Energy Technology Data Exchange (ETDEWEB)

    Moulden, Steve [Sysco Food Service, Houston, TX (United States)

    2015-08-20

    This project, entitled “Recovery Act: Fuel Cell-Powered Lift Truck Sysco (Houston) Fleet Deployment”, was in response to DOE funding opportunity announcement DE-PS36-08GO98009, Topic 7B, which promotes the deployment of fuel cell powered material handling equipment in large, multi-shift distribution centers. This project promoted large-volume commercialdeployments and helped to create a market pull for material handling equipment (MHE) powered fuel cell systems. Specific outcomes and benefits involved the proliferation of fuel cell systems in 5-to 20-kW lift trucks at a high-profile, real-world site that demonstrated the benefits of fuel cell technology and served as a focal point for other nascent customers. The project allowed for the creation of expertise in providing service and support for MHE fuel cell powered systems, growth of existing product manufacturing expertise, and promoted existing fuel cell system and component companies. The project also stimulated other MHE fleet conversions helping to speed the adoption of fuel cell systems and hydrogen fueling technology. This document also contains the lessons learned during the project in order to communicate the successes and difficulties experienced, which could potentially assist others planning similar projects.

  19. Development of predictive equations for lifting strengths.

    Science.gov (United States)

    Kumar, S

    1995-10-01

    The purpose of the study was to determine relationship between lifting strengths of male and female subjects and body posture, type of lift (stoop or squat) and velocity of lift. Thirty normal young adults (18 males and 12 females) volunteered for the study. All subjects were required to perform a total of 56 tasks. Of these, 28 were stoop lifts and 28 were squat lifts. In each of the categories of stoop and squat lifts, the strengths were tested in standard posture, isokinetic (linear velocity of 500 mm/s), and isometric modes at half, three-quarters and full horizontal individual reach distances in sagittal, 30 degrees lateral and 60 degrees lateral planes. The strengths were measured using a static dynamic strength tester with a load cell and an IBM microcomputer with an A/D card. The peak and average strength values were extracted and statistically compared across conditions and gender (ANOVA). Finally a multiple regression analysis was carried out to predict strength as a function of reach, posture and velocity of lift. The ANOVA revealed a highly significant effect of gender, reach, plane and velocity (p < 0.01). All regression equations (108) were significant (p < 0.01), and more than 70% of variance in lifting strength was accounted for by the anthropometric variables and sagittal plane strength values. Such an established relationship allows one to predict the human lifting strength capabilities for industrial application based on simple anthropometric and strength characteristics.

  20. Chair Lift Falls and Injuries in Children.

    Science.gov (United States)

    Glissmeyer, Eric W; Metzger, Ryan R; Bolte, Robert

    2018-02-01

    The objective of this study was to compare demographic injury and treatment characteristics of hospitalized pediatric cases of falls from chair lifts to cases of other ski and snowboarding injuries and identify potential interventions for preventing falls from chair lifts. Retrospective query of the trauma registry of Utah's only pediatric trauma center for children younger than 18 years requiring hospitalization for a ski or snowboarding injury from November 2004 to February 2014. There were 443 cases of hospitalized ski and snowboarding injuries during the study period. Twenty-nine cases (7%) fell from height while riding a chair lift. Children falling from chair lifts were more likely to be younger (6.9 years vs 12.1, P chair lift falls with a significant injury (abbreviated injury scale, ≥3) was lower extremity (4/29, all femur fractures). Patient age discriminated chair lift falls well (area under the receiver operating characteristic curve, 0.87) with age of 7 years and below predicting chair lift fall with a sensitivity of 76% and a specificity of 91%. Injuries requiring hospitalization after falls from chair lifts occur at regulated facilities and are more common in younger female children when compared with other ski and snowboarding injuries. Interventions for reducing falls from chair lifts may be most effective applied to children 7 years and younger.

  1. Antibiotic prophylaxis for patients undergoing elective endoscopic ...

    African Journals Online (AJOL)

    Antibiotic prophylaxis for patients undergoing elective endoscopic retrograde cholangiopancreatography. M Brand, D Bisoz. Abstract. Background. Antibiotic prophylaxis for endoscopic retrograde cholangiopancreatography (ERCP) is controversial. We set out to assess the current antibiotic prescribing practice among ...

  2. Endoscopic Transaxillary Near Total Thyroidectomy

    Science.gov (United States)

    Ejeh, Ijeoma Acholonu; Speights, Fredne; Rashid, Qammar N.; Ideis, Mustafa

    2006-01-01

    Background: Since first reported in 1996, endoscopic minimally invasive surgery of the cervical region has been shown to be safe and effective in the treatment of benign thyroid and parathyroid disease. The endoscopic transaxillary technique uses a remote lateral approach to the thyroid gland. Because of the perceived difficulty in accessing the contralateral anatomy of the thyroid gland, this technique has typically been reserved for patients with unilateral disease. Objectives: The present study examines the safety and feasibility of the transaxillary technique in dissecting and assessment of both thyroid lobes in performing near total thyroidectomy. Methods: Prior to this study we successfully performed endoscopic transaxillary thyroid lobectomy in 32 patients between August 2003 and August 2005. Technical feasibility in performing total thyroidectomy using this approach was accomplished first utilizing a porcine model followed by three human cadaver models prior to proceeding to human surgery. After IRB approval three female patients with histories of enlarging multinodular goiter were selected to undergo endoscopic near total thyroidectomy. Results: The average operative time for all models was 142 minutes (range 57–327 min). The three patients in this study had clinically enlarging multinodular goiters with an average size of 4 cm. The contralateral recurrent laryngeal nerve and parathyroid glands were identified in all cases. There was no post-operative bleeding, hoarseness or subcutaneous emphysema. Conclusion: Endoscopic transaxillary near total thyroidectomy is feasible and can be performed safely in human patients with bilateral thyroid disease. PMID:16882421

  3. Endoscopic corpus callosotomy and hemispherotomy.

    Science.gov (United States)

    Sood, Sandeep; Marupudi, Neena I; Asano, Eishi; Haridas, Abilash; Ham, Steven D

    2015-12-01

    Corpus callosotomy and hemispherotomy are conventionally performed via a large craniotomy with the aid of a microscope for children with intractable epilepsy. Primary technical considerations include completeness of disconnection and blood loss. The authors describe an endoscopic technique performed through a microcraniotomy for these procedures. Four patients with drop attacks and 2 with intractable seizures related to a neonatal stroke underwent endoscopic complete corpus callosotomy and hemispherotomy, respectively. The surgeries were performed through a 2- to 3-cm precoronal microcraniotomy. Interhemispheric dissection to the corpus callosum was done using the standard technique. Subsequently, the bimanual technique with a suction device mounted on an endoscope was used to perform a complete corpus callosotomy, including interforniceal and anterior commissure disconnection. In patients who had hemispherotomy, the fornix was resected posteriorly and lateral disconnection was done by unroofing the temporal horn. Anteriorly, endoscopic corticectomy was done along the ipsilateral anterior cerebral artery to reach the bifurcation of the internal carotid artery to complete the anterior disconnection. Postoperative MRI and diffusion tensor imaging (DTI) of the brain were performed to confirm complete disconnection. The procedure was accomplished successfully in all patients, with excellent visualization secured. None of the patients required a blood transfusion. Postoperative MRI and DTI confirmed completeness of the disconnection. Patients who underwent corpus callosotomy had complete resolution of drop attacks at a mean follow-up of 6 months, and patients who underwent hemispherotomy became seizure free. Endoscopic corpus callosotomy and hemispherotomy are surgically feasible procedures associated with minimal blood loss, minimal risk, and excellent visualization.

  4. Study on process design of partially-balanced, hydraulically lifting vertical ship lift

    Science.gov (United States)

    Xin, Shen; Xiaofeng, Xu; Lu, Zhang; Bing, Zhu; Fei, Li

    2017-11-01

    The hub ship lift in Panjin is the first navigation structure in China for the link between the inland and open seas, which adopts a novel partially-balanced, hydraulically lifting ship lift; it can meet such requirements as fast and sharp water level change in open sea, large draft of a yacht, and launching of a ship reception chamber; its balancing weight system can effectively reduce the load of the primary lifting cylinder, and optimize the force distribution of the ship reception chamber. The paper provides an introduction to main equipment, basic principles, main features and system composition of a ship lift. The unique power system and balancing system of the completed ship lift has offered some experience for the construction of the tourism-type ship lifts with a lower lifting height.

  5. Reading faces and Facing words

    DEFF Research Database (Denmark)

    Robotham, Julia Emma; Lindegaard, Martin Weis; Delfi, Tzvetelina Shentova

    perception of faces and words is affected by unilateral posterior stroke. Two patients with lesions in their dominant hemisphere and two with lesions in their non-dominant hemisphere were tested on sensitive tests of face and word perception during the stable phase of recovery. Despite all patients having...... unilateral lesions, we found no patient with a selective deficit in either reading or face processing. Rather, the patients showing a deficit in processing either words or faces were also impaired with the other category. One patient performed within the normal range on all tasks. In addition, all patients...... performed within normal range on at least one test of visual categorisation, strongly suggesting that their abnormal performance with words and faces does not represent a generalised visuo-perceptual deficit. Our results suggest that posterior areas in both hemispheres may be critical for both reading...

  6. Endoscopic Treatment for Early Gastric Cancer

    OpenAIRE

    Kim, Sang Gyun

    2011-01-01

    Endoscopic resection has been accepted as a curative modality for early gastric cancer (EGC). Since conventional endoscopic mucosal resection (EMR) has been introduced, many improvements in endoscopic accessories and techniques have been achieved. Recently, endoscopic submucosal dissection (ESD) using various electrosurgical knives has been performed for complete resection of EGC and enables complete resection of EGC, which is difficult to completely resect in the era of conventional EMR. Cur...

  7. About Face

    Medline Plus

    Full Text Available ... by Topic Videos by Type Search All Videos Learn More PTSD Basics PTSD Treatment What is AboutFace? ... types of therapy that are proven to work. Learn more about Prolonged Exposure (PE) and Cognitive Processing ...

  8. About Face

    Medline Plus

    Full Text Available Skip to Content Menu Closed (Tap to Open) Home Videos by Topic Videos by Type Search All ... What is AboutFace? Resources for Professionals Get Help Home Watch Videos by Topic Videos by Type Search ...

  9. 77 FR 20558 - Federal Motor Vehicle Safety Standards; Platform Lifts for Motor Vehicles; Platform Lift...

    Science.gov (United States)

    2012-04-05

    ... [Docket No. NHTSA-2012-0039] RIN 2127-AJ93 Federal Motor Vehicle Safety Standards; Platform Lifts for Motor Vehicles; Platform Lift Installations in Motor Vehicles AGENCY: National Highway Traffic Safety... amendments to the Federal motor vehicle safety standards on platform lift systems for motor vehicles. The...

  10. Endoscopic Palliation for Pancreatic Cancer

    Directory of Open Access Journals (Sweden)

    Mihir Bakhru

    2011-04-01

    Full Text Available Pancreatic cancer is devastating due to its poor prognosis. Patients require a multidisciplinary approach to guide available options, mostly palliative because of advanced disease at presentation. Palliation including relief of biliary obstruction, gastric outlet obstruction, and cancer-related pain has become the focus in patients whose cancer is determined to be unresectable. Endoscopic stenting for biliary obstruction is an option for drainage to avoid the complications including jaundice, pruritus, infection, liver dysfunction and eventually failure. Enteral stents can relieve gastric obstruction and allow patients to resume oral intake. Pain is difficult to treat in cancer patients and endoscopic procedures such as pancreatic stenting and celiac plexus neurolysis can provide relief. The objective of endoscopic palliation is to primarily address symptoms as well improve quality of life.

  11. 33 CFR 118.85 - Lights on vertical lift bridges.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Lights on vertical lift bridges... BRIDGES BRIDGE LIGHTING AND OTHER SIGNALS § 118.85 Lights on vertical lift bridges. (a) Lift span lights. The vertical lift span of every vertical lift bridge shall be lighted so that the center of the...

  12. Festival "Lift 11" toob pealinna pööraseid installatsioone / Kristjan Pihl

    Index Scriptorium Estoniae

    Pihl, Kristjan

    2011-01-01

    Linnainstallatsioonide festivali "LIFT11" algselt väljakuulutatud 17 võidutööst teostub 11. 17. augustil avatakse Lasnamäe kanali ääres skulptuur "Uurijad", 23. augustil Russalka juures Margus Tamme ja Argo Peeveri installatsioon "Face it". Ärajäävatest töödest. Tutvustab kuraator Margit Aule

  13. LIFT 11 kutsub kogemist väärt kohtadesse / Silvia Pärmann

    Index Scriptorium Estoniae

    Pärmann, Silvia

    2011-01-01

    Installatsioonide festivalist LIFT 11 Tallinnas, kuraator Margit Aule. Margus Tamme ja Argo Peeveri installatsioonist "Face It", Raul Kalvo skulptuurist "Uurijad", Raul Kelleri installatsioonist "Tütarlaps kloaagis", Aet Aderi, Kaarel Künnapi, Grete Soosalu, Flo Kasearu, Andra Aaloe kunstiprojektist "O"

  14. Wholly Endoscopic Permeatal Removal of a Petrous Apex Cholesteatoma

    Directory of Open Access Journals (Sweden)

    Todd Kanzara

    2014-01-01

    Full Text Available We report a case of a petrous apex cholesteatoma which was managed with a wholly endoscopic permeatal approach. A 63-year-old Caucasian male presented with a 10-year history of right-sided facial palsy and profound deafness. On examination in our clinic, the patient had a grade VI House-Brackmann paresis, otoscopic evidence of attic cholesteatoma behind an intact drum, and extensive scarring of the face from previous facial reanimation surgery. Imaging review was suggestive of petrous apex cholesteatoma. An initial decision to manage the patient conservatively was later reviewed on account of the patient suffering recurrent epileptic seizures. A wholly endoscopic permeatal approach was used with successful outcomes. In addition to the case report we also provide a brief description of the technique and a review of the relevant literature.

  15. Lip Lifting: Unveiling Dental Beauty.

    Science.gov (United States)

    Stanley, Kyle; Caligiuri, Matthew; Schlichting, Luís Henrique; Bazos, Panaghiotis K; Magne, Michel

    The focus for the achievement of complete success in the esthetic zone has traditionally been on addressing deficiencies of intraoral hard and soft tissue. Often, these deficiencies are accompanied by esthetic concerns regarding the lips that are routinely neglected by the dental team. A predictable plastic surgery technique - the lip lift - has been used for decades to enhance lip esthetics by shortening the senile upper lip to achieve a more youthful appearance. Over the years, this technique has been refined and used in many different ways, allowing its routine incorporation into full facial esthetic planning. Through restoration of the upper lip to its optimal position, the artistry of the dentist and dental technician can truly be appreciated in the rejuvenated smile. By the introduction of this minimally invasive surgical technique to the dental community, patients stand to benefit from a comprehensive orofacial approach to anterior dental esthetic planning.

  16. Heavy-lift airship dynamics

    Science.gov (United States)

    Tischler, M. B.; Ringland, R. F.; Jex, H. R.

    1983-01-01

    The basic aerodynamic and dynamic properties of an example heavy-lift airship (HLA) configuration are analyzed using a nonlinear, multibody, 6-degrees-of-freedom digital simulation. The slung-payload model is described, and a preliminary analysis of the coupled vehicle-payload dynamics is presented. Trim calculations show the importance of control mixing selection and suggest performance deficiencies in crosswind stationkeeping for the unloaded example HLA. Numerically linearized dynamics of the unloaded vehicle exhibit a divergent yaw mode and an oscillatory pitch mode whose stability characteristic is sensitive to flight speed. An analysis of the vehicle-payload dynamics shows significant coupling of the payload dynamics with those of the basic HLA. It is shown that significant improvement in the vehicle's dynamic behavior can be achieved with the incorporation of a simple flight controller having proportional, rate, and integral-error feedbacks.

  17. UF6 cylinder lifting equipment enhancements

    International Nuclear Information System (INIS)

    Hortel, J.M.

    1991-01-01

    This paper presents numerous enhancements that have been made to the Portsmouth lifting equipment to ensure the safe handling of cylinders containing liquid uranium hexafluoride (UF 6 ). The basic approach has been to provide redundancy to all components of the lift path so that any one component failure would not cause the load to drop or cause any undesirable movement. 4 figs

  18. Soccer Ball Lift Coefficients via Trajectory Analysis

    Science.gov (United States)

    Goff, John Eric; Carre, Matt J.

    2010-01-01

    We performed experiments in which a soccer ball was launched from a machine while two high-speed cameras recorded portions of the trajectory. Using the trajectory data and published drag coefficients, we extracted lift coefficients for a soccer ball. We determined lift coefficients for a wide range of spin parameters, including several spin…

  19. Lift conference | 5-7 February

    CERN Multimedia

    2014-01-01

    Since 2006, Lift Events explore the business and social implications of new technologies through the organisation of international event series and open innovation programs in Europe, Asia and America. The next conference will be held on 5-7 February in Geneva.   (Image: © Lift Conference) The Lift Conference is one of the leading conferences on innovation in Europe and a key annual meeting for individuals and organizations wishing to understand and anticipate trends and innovation. Held every year in February in Geneva (5-7 February 2014), the Lift Conference is a three-day event consisting of talks, interactive workshops, exhibitions, and discussions bringing together over 1’000 participants from all society’s sectors and industries in a dynamic and informal environment with the aim to learn, connect, share and leverage innovation opportunities.   Extraordinary speakers will take to the stage at Lift14: Porter Erisman, former VP of Alibaba.com turned...

  20. Design and analysis of lifting tool assemblies to lift different engine block

    Science.gov (United States)

    Sawant, Arpana; Deshmukh, Nilaj N.; Chauhan, Santosh; Dabhadkar, Mandar; Deore, Rupali

    2017-07-01

    Engines block are required to be lifted from one place to another while they are being processed. The human effort required for this purpose is more and also the engine block may get damaged if it is not handled properly. There is a need for designing a proper lifting tool which will be able to conveniently lift the engine block and place it at the desired position without any accident and damage to the engine block. In the present study lifting tool assemblies are designed and analyzed in such way that it may lift different categories of engine blocks. The lifting tool assembly consists of lifting plate, lifting ring, cap screws and washers. A parametric model and assembly of Lifting tool is done in 3D modelling software CREO 2.0 and analysis is carried out in ANSYS Workbench 16.0. A test block of weight equivalent to that of an engine block is considered for the purpose of analysis. In the preliminary study, without washer the stresses obtained on the lifting tool were more than the safety margin. In the present design, washers were used with appropriate dimensions which helps to bring down the stresses on the lifting tool within the safety margin. Analysis is carried out to verify that tool design meets the ASME BTH-1 required safety margin.

  1. Direct lifts of coupled cell networks

    Science.gov (United States)

    Dias, A. P. S.; Moreira, C. S.

    2018-04-01

    In networks of dynamical systems, there are spaces defined in terms of equalities of cell coordinates which are flow-invariant under any dynamical system that has a form consistent with the given underlying network structure—the network synchrony subspaces. Given a network and one of its synchrony subspaces, any system with a form consistent with the network, restricted to the synchrony subspace, defines a new system which is consistent with a smaller network, called the quotient network of the original network by the synchrony subspace. Moreover, any system associated with the quotient can be interpreted as the restriction to the synchrony subspace of a system associated with the original network. We call the larger network a lift of the smaller network, and a lift can be interpreted as a result of the cellular splitting of the smaller network. In this paper, we address the question of the uniqueness in this lifting process in terms of the networks’ topologies. A lift G of a given network Q is said to be direct when there are no intermediate lifts of Q between them. We provide necessary and sufficient conditions for a lift of a general network to be direct. Our results characterize direct lifts using the subnetworks of all splitting cells of Q and of all split cells of G. We show that G is a direct lift of Q if and only if either the split subnetwork is a direct lift or consists of two copies of the splitting subnetwork. These results are then applied to the class of regular uniform networks and to the special classes of ring networks and acyclic networks. We also illustrate that one of the applications of our results is to the lifting bifurcation problem.

  2. Lifting index of the niosh lifting equation and low back pain

    Directory of Open Access Journals (Sweden)

    Eliana Remor Teixeira

    2011-09-01

    Full Text Available The purpose of this study is to assess the relationship of the Lifting Index obtained through the application of the NIOSH Lifting Equation and the incidence of low back pain among forty-eight workers involved in manual lifting tasks. It was applied the equation in eleven tasks and the workers were interviewed. The most unfavorable conditions presented themselves in the lifting destination. The variables that most contributed to the inadequate values of the Lifting Index were: the horizontal location, the lifting frequency and the vertical distance, beyond the high weight of the load. The incidence of low back pain in the last twelve months was 19%, whereas the incidence of work-related low back pain in the same period was 10%. In 72.7% of the tasks evaluated the Composite Lifting Index was more than three, which are considered as high ergonomic risk.

  3. enter endoscopic third ventriculostomy (ETV)

    African Journals Online (AJOL)

    Ventriculoperitoneal 78. Point of View: Exit ventriculoperitoneal shunt; enter endoscopic third ventriculostomy (ETV): contemporary views on hydrocephalus and their implications on management. Abstract. Hydrocephalus has been known to affect humans since the birth of human medicine as it is described by Hippocrates.

  4. Peroral endoscopic myotomy for achalasia

    NARCIS (Netherlands)

    Bredenoord, A. J.; Rösch, T.; Fockens, P.

    2014-01-01

    Treatment of achalasia is complicated by symptom recurrence and a significant risk for severe complications. Endoscopic myotomy was developed in the search for a highly efficacious treatment with lower risks. Since its introduction in 2010, several centers have adopted the technique and published

  5. Endoscopic treatment of orbital tumors.

    Science.gov (United States)

    Signorelli, Francesco; Anile, Carmelo; Rigante, Mario; Paludetti, Gaetano; Pompucci, Angelo; Mangiola, Annunziato

    2015-03-16

    Different orbital and transcranial approaches are performed in order to manage orbital tumors, depending on the location and size of the lesion within the orbit. These approaches provide a satisfactory view of the superior and lateral aspects of the orbit and the optic canal but involve risks associated with their invasiveness because they require significant displacement of orbital structures. In addition, external approaches to intraconal lesions may also require deinsertion of extraocular muscles, with subsequent impact on extraocular mobility. Recently, minimally invasive techniques have been proposed as valid alternative to external approaches for selected orbital lesions. Among them, transnasal endoscopic approaches, "pure" or combined with external approaches, have been reported, especially for intraconal lesions located inferiorly and medially to the optic nerve. The avoidance of muscle detachment and the shortness of the surgical intraorbital trajectory makes endoscopic approach less invasive, thus minimizing tissue damage. Endoscopic surgery decreases the recovery time and improves the cosmetic outcome not requiring skin incisions. The purpose of this study is to review and discuss the current surgical techniques for orbital tumors removal, focusing on endoscopic approaches to the orbit and outlining the key anatomic principles to follow for safe tumor resection.

  6. Colonic perforation following endoscopic retrograde ...

    African Journals Online (AJOL)

    We highlight a potentially lethal complication of acute severe pancreatitis that may not be suspected in severely ill patients. A 41-year-old woman developed acute severe pancreatitis following endoscopic retrograde cholangiopancreatography (ERCP) for suspected choledocholithiasis. When her condition deteriorated ...

  7. Occupational lifting of heavy loads and preterm birth:

    DEFF Research Database (Denmark)

    Runge, Stine Bjerrum; Pedersen, Jacob Krabbe; Svendsen, Susanne Wulff

    2013-01-01

    To examine the association between occupational lifting during pregnancy and preterm birth. The risk of preterm birth was estimated for total burden lifted per day and number of medium and heavy loads lifted per day.......To examine the association between occupational lifting during pregnancy and preterm birth. The risk of preterm birth was estimated for total burden lifted per day and number of medium and heavy loads lifted per day....

  8. About Face

    Medline Plus

    Full Text Available ... What is AboutFace? Resources for Professionals Get Help PTSD We've been there. After a traumatic event — ... you're not feeling better, you may have PTSD (posttraumatic stress disorder). Watch the intro This is ...

  9. About Face

    Medline Plus

    Full Text Available ... to Content Menu Closed (Tap to Open) Home Videos by Topic Videos by Type Search All Videos PTSD Basics PTSD Treatment What is AboutFace? Resources for Professionals Get Help Home Watch Videos by Topic Videos by Type Search All Videos ...

  10. About Face

    Medline Plus

    Full Text Available ... at first. But if it's been months or years since the trauma and you're not feeling better, you may have PTSD (posttraumatic stress disorder). Watch the intro This is AboutFace In these videos, Veterans, family members, ...

  11. About Face

    Medline Plus

    Full Text Available ... traumatic event — like combat, an assault, or a disaster — it's normal to feel scared, keyed up, or sad at first. But if it's been months or years since the trauma and you're not feeling better, you may have PTSD (posttraumatic stress disorder). Watch the intro This is AboutFace In ...

  12. Modeling lift operations with SASmacr Simulation Studio

    Science.gov (United States)

    Kar, Leow Soo

    2016-10-01

    Lifts or elevators are an essential part of multistorey buildings which provide vertical transportation for its occupants. In large and high-rise apartment buildings, its occupants are permanent, while in buildings, like hospitals or office blocks, the occupants are temporary or users of the buildings. They come in to work or to visit, and thus, the population of such buildings are much higher than those in residential apartments. It is common these days that large office blocks or hospitals have at least 8 to 10 lifts serving its population. In order to optimize the level of service performance, different transportation schemes are devised to control the lift operations. For example, one lift may be assigned to solely service the even floors and another solely for the odd floors, etc. In this paper, a basic lift system is modelled using SAS Simulation Studio to study the effect of factors such as the number of floors, capacity of the lift car, arrival rate and exit rate of passengers at each floor, peak and off peak periods on the system performance. The simulation is applied to a real lift operation in Sunway College's North Building to validate the model.

  13. Gasless fetoscopy: a new approach to endoscopic closure of a lumbar skin defect in fetal sheep.

    Science.gov (United States)

    Pedreira, D A L; Oliveira, R C S; Valente, P R; Abou-Jamra, R C; Araújo, A; Saldiva, P H

    2008-01-01

    To develop a new endoscopic approach to the correction of a myelomeningocele-like defect in fetal sheep. The fetuses of 9 pregnant ewes, with an average gestational age of 115 days, were subjected to a 3.0 x 2.0 cm removal of the skin over the lumbar spine, performed through hysterotomy. The uterus was closed, and three 5-mm endoscopic cannulas, without valve mechanisms, were inserted. In the pilot phase (2 animals), we initially worked exclusively in the amniotic fluid space. In the study phase, we partially withdrew the fetus from the amniotic fluid to completely expose its back. By simply allowing air to enter the amniotic cavity (without gas injection), a working space was created using a uterine lift device. The skin around the defect was dissected, and a biosynthetic cellulose material was applied to cover the area. A continuous suture of the skin was performed to completely hide the material. The combined air/fluid space allowed the skin to be successfully closed in 6 out of 7 cases in the study phase. All fetuses were alive at the end of the procedures. Time to complete the endoscopic part of the procedure fell from 3 to 1 h by the end of this series. Premature birth occurred in 2 of the 4 cases allowed to continue with the pregnancy. A new gasless fetoscopic surgery technique was developed as an alternative to current techniques used for fetal endoscopic surgery. (c) 2008 S. Karger AG, Basel.

  14. Forearm Torque and Lifting Strength: Normative Data.

    Science.gov (United States)

    Axelsson, Peter; Fredrikson, Per; Nilsson, Anders; Andersson, Jonny K; Kärrholm, Johan

    2018-02-10

    To establish reference values for new methods designed to quantitatively measure forearm torque and lifting strength and to compare these values with grip strength. A total of 499 volunteers, 262 males and 237 females, aged 15 to 85 (mean, 44) years, were tested for lifting strength and forearm torque with the Kern and Baseline dynamometers. These individuals were also tested for grip strength with a Jamar dynamometer. Standardized procedures were used and information about sex, height, weight, hand dominance, and whether their work involved high or low manual strain was collected. Men had approximately 70% higher forearm torque and lifting strength compared with females. Male subjects aged 26 to 35 years and female subjects aged 36 to 45 years showed highest strength values. In patients with dominant right side, 61% to 78% had a higher or equal strength on this side in the different tests performed. In patients with dominant left side, the corresponding proportions varied between 41% and 65%. There was a high correlation between grip strength and forearm torque and lifting strength. Sex, body height, body weight, and age showed a significant correlation to the strength measurements. In a multiple regression model sex, age (entered as linear and squared) could explain 51% to 63% of the total variances of forearm torque strength and 30% to 36% of lifting strength. Reference values for lifting strength and forearm torque to be used in clinical practice were acquired. Grip strength has a high correlation to forearm torque and lifting strength. Sex, age, and height can be used to predict forearm torque and lifting strength. Prediction equations using these variables were generated. Normative data of forearm torque and lifting strength might improve the quality of assessment of wrist and forearm disorders as well as their treatments. Copyright © 2018 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.

  15. Wingless Flight: The Lifting Body Story

    Science.gov (United States)

    Reed, R. Dale; Lister, Darlene (Editor); Huntley, J. D. (Editor)

    1997-01-01

    Wingless Flight tells the story of the most unusual flying machines ever flown, the lifting bodies. It is my story about my friends and colleagues who committed a significant part of their lives in the 1960s and 1970s to prove that the concept was a viable one for use in spacecraft of the future. This story, filled with drama and adventure, is about the twelve-year period from 1963 to 1975 in which eight different lifting-body configurations flew. It is appropriate for me to write the story, since I was the engineer who first presented the idea of flight-testing the concept to others at the NASA Flight Research Center. Over those twelve years, I experienced the story as it unfolded day by day at that remote NASA facility northeast of los Angeles in the bleak Mojave Desert. Benefits from this effort immediately influenced the design and operational concepts of the winged NASA Shuttle Orbiter. However, the full benefits would not be realized until the 1990s when new spacecraft such as the X-33 and X-38 would fully employ the lifting-body concept. A lifting body is basically a wingless vehicle that flies due to the lift generated by the shape of its fuselage. Although both a lifting reentry vehicle and a ballistic capsule had been considered as options during the early stages of NASA's space program, NASA initially opted to go with the capsule. A number of individuals were not content to close the book on the lifting-body concept. Researchers including Alfred Eggers at the NASA Ames Research Center conducted early wind-tunnel experiments, finding that half of a rounded nose-cone shape that was flat on top and rounded on the bottom could generate a lift-to-drag ratio of about 1.5 to 1. Eggers' preliminary design sketch later resembled the basic M2 lifting-body design. At the NASA Langley Research Center, other researchers toyed with their own lifting-body shapes. Meanwhile, some of us aircraft-oriented researchers at the, NASA Flight Research Center at Edwards Air

  16. Occupational lifting, fetal death and preterm birth

    DEFF Research Database (Denmark)

    Mocevic, Emina; Svendsen, Susanne Wulff; Jørgensen, Kristian Tore

    2014-01-01

    OBJECTIVE: We examined the association between occupational lifting during pregnancy and risk of fetal death and preterm birth using a job exposure matrix (JEM). METHODS: For 68,086 occupationally active women in the Danish National Birth Cohort, interview information on occupational lifting...... was collected around gestational week 16. We established a JEM based on information from women, who were still pregnant when interviewed. The JEM provided mean total loads lifted per day within homogeneous exposure groups as informed by job and industry codes. All women were assigned an exposure estimate from...

  17. Compartmental endoscopic surgical anatomy of the medial intraconal orbital space.

    Science.gov (United States)

    Bleier, Benjamin S; Healy, David Y; Chhabra, Nipun; Freitag, Suzanne

    2014-07-01

    Surgical management of intraconal pathology represents the next frontier in endoscopic endonasal surgery. Despite this, the medial intraconal space remains a relatively unexplored region, secondary to its variable and technically demanding anatomy. The purpose of this study is to define the neurovascular structures in this region and introduce a compartmentalized approach to enhance surgical planning. This study was an institutional review board (IRB)-exempt endoscopic anatomic study in 10 cadaveric orbits. After dissection of the medial intraconal space, the pattern and trajectory of the oculomotor nerve and ophthalmic arterial arborizations were analyzed. The position of all vessels as well as the length of the oculomotor trunk and branches relative to the sphenoid face were calculated. A mean of 1.5 arterial branches were identified (n = 15; range, 1-4) at a mean of 8.8 mm from the sphenoid face (range, 4-15 mm). The majority of the arteries (n = 7) inserted adjacent to the midline of medial rectus. The oculomotor nerve inserted at the level of the sphenoid face and arborized with a large proximal trunk 5.5 ± 1.1 mm in length and multiple branches extending 13.2 ± 2.7 mm from the sphenoid face. The most anterior nerve and vascular pedicle were identified at 17.0 and 15.0 mm from the sphenoid face, respectively. The neurovascular supply to the medial rectus muscle describes a varied but predictable pattern. This data allows the compartmentalization of the medial intraconal space into 3 zones relative to the neurovascular supply. These zones inform the complexity of the dissection and provide a guideline for safe medial rectus retraction relative to the fixed landmark of the sphenoid face. © 2014 ARS-AAOA, LLC.

  18. Scoping the scope: endoscopic evaluation of endoscope working channels with a new high-resolution inspection endoscope (with video).

    Science.gov (United States)

    Barakat, Monique T; Girotra, Mohit; Huang, Robert J; Banerjee, Subhas

    2018-02-06

    Outbreaks of transmission of infection related to endoscopy despite reported adherence to reprocessing guidelines warrant scrutiny of all potential contributing factors. Recent reports from ambulatory surgery centers indicated widespread significant occult damage within endoscope working channels, raising concerns regarding the potential detrimental impact of this damage on the adequacy of endoscope reprocessing. We inspected working channels of all 68 endoscopes at our academic institution using a novel flexible inspection endoscope. Inspections were recorded and videos reviewed by 3 investigators to evaluate and rate channel damage and/or debris. Working channel rinsates were obtained from all endoscopes, and adenosine triphosphate (ATP) bioluminescence was measured. Overall endoscope working channel damage was rated as minimal and/or mild and was consistent with expected wear and tear (median 1.59 on our 5-point scale). Our predominant findings included superficial scratches (98.5%) and scratches with adherent peel (76.5%). No channel perforations, stains, or burns were detected. The extent of damage was not predicted by endoscope age. Minor punctate debris was common, and a few small drops of fluid were noted in 42.6% of endoscopes after reprocessing and drying. The presence of residual fluid predicted higher ATP bioluminescence values. The presence of visualized working channel damage or debris was not associated with elevated ATP bioluminescence values. The flexible inspection endoscope enables high-resolution imaging of endoscope working channels and offers endoscopy units an additional modality for endoscope surveillance, potentially complementing bacterial cultures and ATP values. Our study, conducted in a busy academic endoscopy unit, indicated predominately mild damage to endoscope working channels, which did not correlate with elevated ATP values. Copyright © 2018 American Society for Gastrointestinal Endoscopy. Published by Elsevier Inc. All rights

  19. Percutaneous Endoscopic Gastrostomy in the Enteral Feeding of the Elderly

    Directory of Open Access Journals (Sweden)

    Huan-Lin Chen

    2011-09-01

    Full Text Available Today we are faced with an aging society that may develop malnutrition because of dysphagia related to dementia, stroke, and malignancy seen often in the elderly. The preferred form of nutritional supplementation for this group is enteral nutrition, and the most appropriate long-term method is by use of a gastrostomy. Percutaneous endoscopic gastrostomy (PEG was first introduced in 1980 as an alternative to the traditional operative procedure and rapidly became the preferred procedure. In geriatric patients, the principal indications are neurological dysphagia and malnutrition, related to an underlying disease or anorexia-cachexia in very elderly. PEG is contraindicated in the presence of respiratory distress, previous gastric resection, total esophageal obstruction, coagulation disorders and sepsis in the elderly. Common complications include wound infection, leakage, hemorrhage, and fistula in the general population, but aspiration pneumonia is the major case of death in this group. Risks and complications of PEG must be discussed with patients and their families; and the decision for percutaneous endoscopic gastrostomy insertion should only be made after careful consideration and discussion between managing physicians, allied health professionals, and the patient and/or family. Four ethical principles may help make feeding decisions: beneficence, non-maleficence, autonomy and justice. Attentive long-term care after tube replacement is mandatory. Acceptance of percutaneous endoscopic gastrostomy placement by patients and their families tends to increase once favorable outcomes are offered.

  20. Design of heavy lift cargo aircraft

    Data.gov (United States)

    National Aeronautics and Space Administration — This is the bird of the skies of the future. The heavy lift cargo aircraft which is currently being developed by me has twice the payload capacity of an Antonov...

  1. Lift : Special Needs Transportation in Portland, Oregon

    Science.gov (United States)

    1978-01-01

    The report covers Portland, Oregon's Special Needs Transportation (SNT) project - the Lift - during its first year of operation. The purposes of this UMTA Service and Methods Demonstration (SMD) is to: (1) test a transit operator's ability to provide...

  2. Lambda-lifting in Quadratic Time

    DEFF Research Database (Denmark)

    Danvy, O.; Schultz, U.P.

    2004-01-01

    -lifting transforms a block-structured program into a set of recursive equations, one for each local function in the source program. Each equation carries extra parameters to account for the free variables of the corresponding local function and of all its callees. It is the search for these extra parameters......Lambda-lifting is a program transformation that is used in compilers, partial evaluators, and program transformers. In this article, we show how to reduce its complexity from cubic time to quadratic time, and we present a flow-sensitive lambda-lifter that also works in quadratic time. Lambda...... that yields the cubic factor in the traditional formulation of lambda-lifting, which is due to Johnsson. This search is carried out by computing a transitive closure. To reduce the complexity of lambda-lifting, we partition the call graph of the source program into strongly connected components, based...

  3. Lambda-Lifting in Quadratic Time

    DEFF Research Database (Denmark)

    Danvy, Olivier; Schultz, Ulrik Pagh

    2002-01-01

    that yields the cubic factor in the traditional formulation of lambda-lifting, which is due to Johnsson. This search is carried out by computing a transitive closure. To reduce the complexity of lambda-lifting, we partition the call graph of the source program into strongly connected components, based......Lambda-lifting is a program transformation that is used in compilers, partial evaluators, and program transformers. In this article, we show how to reduce its complexity from cubic time to quadratic time, and we present a flow-sensitive lambda-lifter that also works in quadratic time. Lambda...... of lambda-lifting from O(n^3) to O(n^2) . where n is the size of the program. Since a lambda-lifter can output programs of size O(n^2), our algorithm is asympotically optimal....

  4. Characterization of Oscillatory Lift in MFC Airfoils

    OpenAIRE

    Lang Jr, Joseph Reagle

    2014-01-01

    The purpose of this research is to characterize the response of an airfoil with an oscillatory morphing, Macro-fiber composite (MFC) trailing edge. Correlation of the airfoil lift with the oscillatory input is presented. Modal analysis of the test airfoil and apparatus is used to determine the frequency response function. The effects of static MFC inputs on the FRF are presented and compared to the unactuated airfoil. The transfer function is then used to determine the lift component du...

  5. Domination Edge Lift Critical Trees | Desormeaux | Quaestiones ...

    African Journals Online (AJOL)

    stract. Let uxv be an induced path with center x in a graph G. The edge lifting of uv off x is defined as the action of removing edges ux and vx from the edge set of G, while adding the edge uv to the edge set of G. We study trees for which every possible edge lift changes the domination number. We show that there are no ...

  6. Optimization-based Dynamic Human Lifting Prediction

    Science.gov (United States)

    2008-06-01

    analysis of human lifting movement for biped robot control. Advanced Motion Control, 2004. The 8th IEEE International Workshop. 7. Pope, M.H. and...constraints. Arisumi et al. (2007) studied the dynamic lifting motion of humanoid robots which considered the instantaneous transferred load to the object... robots . IEEE International Conference on Robotics and Automation, Roma, Italy, 10-14 April 2007. 2. Chaffin, D.B. and Andersson, G.B.J.. Occupational

  7. Innovative Alternatives to Lifting Overturned Military Vehicles

    Science.gov (United States)

    2014-04-25

    and sensitive equipment underneath. The current means of lifting the large weights is to use large and bulky pneumatic lifting bags. In an...buckling was investigated assuming the cylinder is simulated to be cantilevered on one side and free on the other, and that the full weight is acting in...be as lightweight and compact as possible. One idea for the implementation of these designs is to include them with any large military vehicle; this

  8. Contrast-enhanced endoscopic ultrasonography

    DEFF Research Database (Denmark)

    Reddy, Nischita K; Ioncică, Ana Maria; Săftoiu, Adrian

    2011-01-01

    Contrast agents are increasingly being used to characterize the vasculature in an organ of interest, to better delineate benign from malignant pathology and to aid in staging and directing therapeutic procedures. We review the mechanisms of action of first, second and third generation contrast...... agents and their use in various endoscopic procedures in the gastrointestinal tract. Various applications of contrast-enhanced endoscopic ultrasonography include differentiating benign from malignant mediastinal lymphadenopathy, assessment of depth of invasion of esophageal, gastric and gall bladder...... cancers and visualization of the portal venous system and esophageal varices. In addition, contrast agents can be used to differentiate pancreatic lesions. The use of color Doppler further increases the ability to diagnose and differentiate various pancreatic malignancies. The sensitivity of power Doppler...

  9. [Endoscopic surgery of hemorrhagic stroke].

    Science.gov (United States)

    Dash'ian, V G; Korshikova, A N; Godkov, I M; Krylov, V V

    2014-01-01

    Objectives. Demonstration and analysis of possibilities of video-endoscopy in the surgical treatment of hypertensive hemorrhages Materials and methods. We analyzed the results of surgical treatment of 35 patients with hypertensive intracranial hematomas which were removed using endoscopic method. Twenty-eight patients had putamen, 3 thalamic, 3 cerebellar and 1 subcortical hematoma; the volume of hematomas ranged from 14 to 84 cm3. Results. Neurological lesions completely disappeared in 7 patients, 6 patients had moderate and 17 severe disability. Five (14%) patients died. Outcome of treatment was significantly (psurgery, localization of the hemorrhage, presence and degree of transverse brain dislocation, repeated hemorrhages. Risk factors for poor outcome were depressed consciousness, recurrent hemorrhages, the transverse dislocation >6 mm and deep intracranial hematoma. Conclusions. The efficacy of endoscopic aspiration of hematomas is comparable to open surgical interventions but less traumatic.

  10. Buttock Lifting with Polypropylene Strips.

    Science.gov (United States)

    Ballivian Rico, José; Esteche, Atilio; Hanke, Carlos José Ramírez; Ribeiro, Ricardo Cavalcanti

    2016-04-01

    The purpose of this study was to evaluate the results of gluteal suspension with polypropylene strips. Ninety healthy female patients between the ages of 20 and 50 years (mean, 26 years), who wished to remodel their buttocks from December 2004 to February 2013 were studied retrospectively. All 90 patients were treated with 2 strips of polypropylene on each buttock using the following procedures: 27 (30 %) patients were suspended with polypropylene strips; 63 (70 %) patients were treated with tumescent liposuction in the sacral "V", lower back, supragluteal regions, and flanks to improve buttocks contour (aspirated volume of fat from 350 to 800 cc); 16 (18 %) patients underwent fat grafting in the subcutaneous and intramuscular layers (up to 300 cc in each buttock to increase volume); 5 (6 %) patients received implants to increase volume; and 4 (4.4 %) patients underwent removal and relocation of intramuscular gluteal implants to improve esthetics. Over an 8-year period, 90 female patients underwent gluteal suspension surgeries. Good esthetic results without complications were obtained in 75 of 90 (84 %) cases. Complications occurred in 15 of 90 (16.6 %) patients, including strip removal due to postoperative pain in 1 (1.1 %) patient, and seroma in both subgluteal sulci in 3 (3.3 %) patients. The results of this study performed in 90 patients over 8 years showed that the suspension with polypropylene strips performed as a single procedure or in combination with other cosmetic methods helps to enhance and lift ptosed gluteal and paragluteal areas. This journal requires that the authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266.

  11. Validation of a musculoskeletal model of lifting and its application for biomechanical evaluation of lifting techniques.

    Science.gov (United States)

    Mirakhorlo, Mojtaba; Azghani, Mahmood Reza; Kahrizi, Sedighe

    2014-01-01

    Lifting methods, including standing stance and techniques have wide effects on spine loading and stability. Previous studies explored lifting techniques in many biomechanical terms and documented changes in muscular and postural response of body as a function of techniques .However, the impact of standing stance and lifting technique on human musculoskeletal had not been investigated concurrently. A whole body musculoskeletal model of lifting had been built in order to evaluate standing stance impact on muscle activation patterns and spine loading during each distinctive lifting technique. Verified model had been used in different stances width during squat, stoop and semi-squat lifting for examining the effect of standing stance on each lifting technique. The model muscle's activity was validated by experimental muscle EMGs resulting in Pearson's coefficients of greater than 0.8. Results from analytical analyses show that the effect of stance width on biomechanical parameters consists in the lifting technique, depending on what kind of standing stance was used. Standing stance in each distinctive lifting technique exhibit positive and negative aspects and it can't be recommended either one as being better in terms of biomechanical parameters.

  12. Endoscopic Management of Posterior Epistaxis

    OpenAIRE

    Paul, J.; Kanotra, Sohit Paul; Kanotra, Sonika

    2011-01-01

    The traditional method of management of posterior epistaxis has been with anteroposterior nasal packing. Apart from the high failure rate of 26–50% reported in various series, nasal packing is associated with marked discomfort and several complications. In order to avoid nasal packing, we started doing endoscopic cauterization in cases of posterior epistaxis. A total of 23 patients with posterior epistaxis were subjected to nasal endoscopy with the intent to stop bleeding by cauterization of ...

  13. Endoscopic Aspects of Gastric Syphilis

    Directory of Open Access Journals (Sweden)

    Mariana Souza Varella Frazão

    2012-01-01

    Full Text Available Introduction. Considered as a rare event, gastric syphilis (GS is reported as an organic form of involvement. Low incidence of GS emphasizes the importance of histopathological analysis. Objective. We aim to characterize GS endoscopic aspects in an immunocompetent patient. Case Report. A 23-year-old man presented with epigastric pain associated with nausea, anorexia, generalized malaise and 11 kg weight loss that started 1 month prior to his clinical consultation. Physical examination was normal except for mild abdominal tenderness in epigastrium. Endoscopy observed diminished gastric expandability and diffuse mucosal lesions, from cardia to pylorus. Gastric mucosa was thickened, friable, with nodular aspect, and associated with ulcers lesions. Gastric biopsies were performed, and histopathological analysis resulted in dense inflammatory infiltration rich in plasmocytes. Syphilis serologies were positive for VDRL and Treponema pallidum reagents. Immunohistochemical tests were positive for Treponema pallidum and CD138. The patient was treated with penicillin, leading to resolution of his clinical complaints and endoscopic findings. Conclusion. Diagnosis suspicion of GS is important in view of its nonspecific presentation. Patients with gastric symptoms that mimic neoplastic disease should be investigated thoroughly based on the fact that clinical, endoscopic, and histological findings can easily be mistaken for lymphoma or plastic linitis.

  14. Endoscopic treatment of esophageal achalasia

    Science.gov (United States)

    Esposito, Dario; Maione, Francesco; D’Alessandro, Alessandra; Sarnelli, Giovanni; De Palma, Giovanni D

    2016-01-01

    Achalasia is a motility disorder of the esophagus characterized by dysphagia, regurgitation of undigested food, chest pain, weight loss and respiratory symptoms. The most common form of achalasia is the idiopathic one. Diagnosis largely relies upon endoscopy, barium swallow study, and high resolution esophageal manometry (HRM). Barium swallow and manometry after treatment are also good predictors of success of treatment as it is the residue symptomatology. Short term improvement in the symptomatology of achalasia can be achieved with medical therapy with calcium channel blockers or endoscopic botulin toxin injection. Even though few patients can be cured with only one treatment and repeat procedure might be needed, long term relief from dysphagia can be obtained in about 90% of cases with either surgical interventions such as laparoscopic Heller myotomy or with endoscopic techniques such pneumatic dilatation or, more recently, with per-oral endoscopic myotomy. Age, sex, and manometric type by HRM are also predictors of responsiveness to treatment. Older patients, females and type II achalasia are better after treatment compared to younger patients, males and type III achalasia. Self-expandable metallic stents are an alternative in patients non responding to conventional therapies. PMID:26839644

  15. Endoscopic management of posterior epistaxis.

    Science.gov (United States)

    Paul, J; Kanotra, Sohit Paul; Kanotra, Sonika

    2011-04-01

    The traditional method of management of posterior epistaxis has been with anteroposterior nasal packing. Apart from the high failure rate of 26-50% reported in various series, nasal packing is associated with marked discomfort and several complications. In order to avoid nasal packing, we started doing endoscopic cauterization in cases of posterior epistaxis. A total of 23 patients with posterior epistaxis were subjected to nasal endoscopy with the intent to stop bleeding by cauterization of the bleeding vessel. Of these, in four cases unsuspected diagnosis was made. Of the remaining 19, in three patients, the bleeding point could not be localized accurately and these patients were managed by anteroposterior packing. The rest of the 16 patients were managed by endoscopic cauterization. In four patients, there was recurrence of bleeding within 24 h. In one of these, cauterization controlled the bleeding while in the rest nasal packing had to be resorted to. Thus, of the 23 patients of posterior epistaxis subjected to nasal endoscopy, we could avoid nasal packing in 17 (74%). To conclude, endoscopic nasal cauterization is recommended as the first line to treatment in all cases of posterior epistaxis. This will not only prevent the uncomfortable and potentially dangerous nasal packing but also help in finding the underlying pathology.

  16. Endoscopically removed giant submucosal lipoma

    Directory of Open Access Journals (Sweden)

    Jovanović Ivan

    2007-01-01

    Full Text Available Background. Although uncommon, giant submucosal colon lipomas merit attention as they are often presented with dramatic clinical features such as bleeding, acute bowel obstruction, perforation and sometimes may be mistaken for malignancy. There is a great debate in the literature as to how to treat them. Case report. A patient, 67-year old, was admitted to the Clinic due to a constipation over the last several months, increasing abdominal pain mainly localized in the left lower quadrant accompanied by nausea, vomiting and abdominal distension. Physical examination was unremarkable and the results of the detailed laboratory tests and carcinoembryonic antigen remained within normal limits. Colonoscopy revealed a large 10 cm long, and 4 to 5 cm in diameter, mobile lesion in his sigmoid colon. Conventional endoscopic ultrasound revealed 5 cm hyperechoic lesion of the colonic wall. Twenty MHz mini-probe examination showed that lesion was limited to the submucosa. Since polyp appeared too large for a single transaction, it was removed piecemeal. Once the largest portion of the polyp has been resected, it was relatively easy to place the opened snare loop around portions of the residual polyp. Endoscopic resection was carried out safely without complications. Histological examination revealed the common typical histological features of lipoma elsewhere. The patient remained stable and eventually discharged home. Four weeks later he suffered no recurrent symptoms. Conclusion. Colonic lipomas can be endoscopically removed safely eliminating unnecessary surgery.

  17. Granular Material Scoop and Near-Vertical Lifting Feeder/Conveyor

    Science.gov (United States)

    Walton, Otis (Inventor); Vollmer, Hubert J. (Inventor)

    2017-01-01

    An integrated granular-material scoop and near-vertical lifting feeder/conveyor includes special connections and skirts between a bullnose rotating scoop and an open-helical screw that provides the rotations and material lift and evacuation. A conical working-face of the bullnose rotating scoop has symmetrically distributed graters and vents to break loose and force-in granular material from natural deposits and cargo holds. The bullnose rotating scoop and the open-helical screw its attached to move the material into a continuous layer on the inside surface of an outer stationary sheathing. A motor drive attached to the open-helical screw above at the delivery end provides the lifting force necessary.

  18. Management of Nodular Neoplasia in Barrett's Esophagus: Endoscopic Mucosal Resection and Endoscopic Submucosal Dissection

    NARCIS (Netherlands)

    Belghazi, Kamar; Bergman, Jacques J. G. H. M.; Pouw, Roos E.

    2017-01-01

    Endoscopic resection has proven highly effective and safe in the removal of focal early neoplastic lesions in Barrett's esophagus and is considered the cornerstone of endoscopic treatment. Several techniques are available for endoscopic resection in Barrett's esophagus. The most widely used

  19. 14 CFR 25.697 - Lift and drag devices, controls.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Lift and drag devices, controls. 25.697....697 Lift and drag devices, controls. (a) Each lift device control must be designed so that the pilots....101(d). Lift and drag devices must maintain the selected positions, except for movement produced by an...

  20. Asymptomatic Esophageal Varices Should Be Endoscopically Treated

    Directory of Open Access Journals (Sweden)

    Nib Soehendra

    1998-01-01

    Full Text Available Endoscopic treatment has generally been accepted in the management of bleeding esophageal varices. Both the control of acute variceal bleeding and elective variceal eradication to prevent recurrent bleeding can be achieved via endoscopic methods. In contrast to acute and elective treatment, the role of endoscopic therapy in asymptomatic patients who have never had variceal bleeding remains controversial because of the rather disappointing results obtained from prophylactic sclerotherapy. Most published randomized controlled trials showed that prophylactic sclerotherapy had no effect on survival. In some studies, neither survival rate nor bleeding risk was improved. In this article, the author champions the view that asymptomatic esophageal varices should be endoscopically treated.

  1. Endoscopic full-thickness resection: Current status.

    Science.gov (United States)

    Schmidt, Arthur; Meier, Benjamin; Caca, Karel

    2015-08-21

    Conventional endoscopic resection techniques such as endoscopic mucosal resection or endoscopic submucosal dissection are powerful tools for treatment of gastrointestinal neoplasms. However, those techniques are restricted to superficial layers of the gastrointestinal wall. Endoscopic full-thickness resection (EFTR) is an evolving technique, which is just about to enter clinical routine. It is not only a powerful tool for diagnostic tissue acquisition but also has the potential to spare surgical therapy in selected patients. This review will give an overview about current EFTR techniques and devices.

  2. Endoscopic band ligation and endoscopic hemoclip placement for patients with Mallory-Weiss syndrome and active bleeding

    OpenAIRE

    Cho, Young-Seok; Chae, Hiun-Suk; Kim, Hyung-Keun; Kim, Jin-Soo; Kim, Byung-Wook; Kim, Sung-Soo; Han, Sok-Won; Choi, Kyu-Yong

    2008-01-01

    AIM: To compare the hemostatic efficacy and safety of two mechanical endoscopic methods: endoscopic band ligation (EBL) and endoscopic hemoclip placement (EHP) in patients with actively bleeding Mallory-Weiss syndrome (MWS).

  3. Metabolic Responses to Weight Lifting

    Directory of Open Access Journals (Sweden)

    Arnold Nelson

    2017-04-01

    Full Text Available Editor's Note, The ability to lift heavy loads while performing multiple repetitions is not only highly correlated with muscle mass or the total number actomyosin interactions, but also metabolic functions that includes substrate concentrations and by-product removal.  Muscles use adenosine triphosphate (ATP in at least three locations during exercise; to run the actomyosin interaction, operate sarcoplasmic reticulum calcium pumps, and operate sarcolemma sodium and potassium pumps.  Weight lifting sessions are considered to be an intermittent activity that includes only a few second bursts of high force and/or velocity movements followed by rest periods of up to several minutes. Therefore, the anaerobic pathways such as the phosphagen and glycolytic systems are the initial pathways to respond due in part to the ability to match the increased rates of ATP depletion by increasing ATP production. After the initial resting ATP stores are used up, the phosphagen system starts contributing to ATP replenishment.  This system consists of reactions from the creatine kinase (CK pathway and the adenylate kinase (AK pathway.  However, the CK pathway can only work at max capacity for a short period for resting phosphocreatine (PCr concentrations are only about 4-6 times the amount of resting ATP stores.  Once the PCr concentrations are depleted, the AK reaction will begin by using two adenosine diphosphate (ADP to form one ATP and one adenosine monophosphate (AMP. Although ATP is produced in this pathway, this production of ATP does coincide with an increased concentration of AMP. This is problematic because increased AMP levels will in turn stimulate the adenylate deaminase reaction, which will produce ammonia (NH3. This conversion of AMP into NH3 will result in the muscle cell having a net loss of total adenine nucleotides available to resynthesize ATP.  Glycolysis is the next reaction in line, which increases its role in ATP replenishment as PCr

  4. Anesthesia for Routine and Advanced Upper Gastrointestinal Endoscopic Procedures.

    Science.gov (United States)

    Sharp, Christopher D; Tayler, Ezekiel; Ginsberg, Gregory G

    2017-12-01

    This article aims to detail the breadth and depth of advanced upper gastrointestinal endoscopic procedures. It will focus on sedation and airway management concerns pertaining to this emerged and emerging class of minimally invasive interventions. The article will also cover endoscopic hemostasis, endoscopic resection, stenting and Barrett eradication therapy plus endoscopic ultrasound. It additionally will address the nuances of endoscopic retrograde cholangiopancreatography and new natural orifice transluminal endoscopic surgery procedures including endoscopic cystgastrostomy and the per-oral endoscopic myotomy procedure. Copyright © 2017 Elsevier Inc. All rights reserved.

  5. Numerical Study of Transition of an Annular Lift Fan Aircraft

    OpenAIRE

    Yun Jiang; Bo Zhang

    2016-01-01

    The present study aimed at studying the transition of annular lift fan aircraft through computational fluid dynamics (CFD) simulations. The oscillations of lift and drag, the optimization for the figure of merit, and the characteristics of drag, yawing, rolling and pitching moments in transition are studied. The results show that a two-stage upper and lower fan lift system can generate oscillations of lift and drag in transition, while a single-stage inner and outer fan lift system can elimin...

  6. Effect of training and lifting equipment for preventing back pain in lifting and handling: systematic review

    NARCIS (Netherlands)

    Martimo, Kari-Pekka; Verbeek, Jos; Karppinen, Jaro; Furlan, Andrea D.; Takala, Esa-Pekka; Kuijer, P. Paul F. M.; Jauhiainen, Merja; Viikari-Juntura, Eira

    2008-01-01

    To determine whether advice and training on working techniques and lifting equipment prevent back pain in jobs that involve heavy lifting. Medline, Embase, CENTRAL, Cochrane Back Group's specialised register, CINAHL, Nioshtic, CISdoc, Science Citation Index, and PsychLIT were searched up to

  7. Thread-Lift Sutures : Still in the Lift? A Systematic Review of the Literature

    NARCIS (Netherlands)

    Gulbitti, Haydar Aslan; Colebunders, Britt; Pirayesh, Ali; Bertossi, Dario; van der Lei, Berend

    Background: In 2006, Villa et al. published a review article concerning the use of thread-lift sutures and concluded that the technique was still in its infancy but had great potential to become a useful and effective procedure for nonsurgical lifting of sagged facial tissues. As 11 years have

  8. Study on AE in Mechanical Seal Lift-off Recognition of Mechanical Main Shaft

    Directory of Open Access Journals (Sweden)

    Erqing Zhang

    2014-06-01

    Full Text Available For the problem of the determination of lift-off position and the measurement of end face thickness for mechanical seal more difficult, the method based on acoustic emission signal end face lift-off condition monitoring technology for mechanical seal was proposed. The electric eddy current sensor made direct measurement in the internal of mechanical seal device, and the acoustic emission sensor was fixed in the outside for indirect measurement. The acoustic emission signals were de-noised by wavelet threshold de-noising method. The representative energy features were selected by wavelet packet energy spectrum algorithm. It was established that the Radial Basis Function neural network model used for identification of the mechanical seal lift-off position, and the extracted wavelet energy features as its input. It was confirmed accurate and effective that the acoustic emission identification technology through comparing with the data detected by electric eddy current sensor. So using the acoustic emission technology realized the identification of the mechanical seal lift-off position of mechanical main shaft from inside to outside. It is convenient to be used and promotion in industrial field.

  9. Endoscopic ultrasound-guided endoscopic necrosectomy of the pancreas: is irrigation necessary?

    Science.gov (United States)

    Jürgensen, Christian; Neser, Frank; Boese-Landgraf, Joachim; Schuppan, Detlef; Stölzel, Ulrich; Fritscher-Ravens, Annette

    2012-05-01

    Findings have shown endoscopic necrosectomy to be beneficial for patients with symptomatic pancreatic necrosis accessible for an endoscopic approach. The available studies show that endoscopic necrosectomy requires a multitude of subsequent procedures including repeat irrigation for removal of the necrotic material. This study aimed to investigate the need for additional irrigation in patients with necrotizing pancreatitis treated by endoscopic necrosectomy. The study enrolled 35 consecutive patients (27 men) with a median age of 59 years who had pancreatic necrosis treated with endoscopic necrosectomy. Endoscopic ultrasound-guided internal drainage and consecutive endoscopic necrosectomy was combined with interval multistenting of the cavity. Neither endoscopic nor external irrigation was part of the procedure. An average of 6.2 endoscopy sessions per patient were needed for access, necrosectomy, and stent management. The in-hospital mortality rate was 6% (2/35), including one procedure-related death resulting from postinterventional aspiration. The immediate morbidity rate was 9% (3/35). It was possible to achieve clinical remission for all the surviving patients with no additional surgery needed for management of the necroses. The median follow-up period was 23 months. Neither endoscopic nor external flushing is needed for successful endoscopic treatment of symptomatic necroses. Even without irrigation, the outcome for patients treated with endoscopic necrosectomy is comparable to that described in the published data.

  10. Robot-assisted endoscope guidance versus manual endoscope guidance in functional endonasal sinus surgery (FESS).

    Science.gov (United States)

    Eichhorn, Klaus Wolfgang; Westphal, Ralf; Rilk, Markus; Last, Carsten; Bootz, Friedrich; Wahl, Friedrich; Jakob, Mark; Send, Thorsten

    2017-10-01

    Having one hand occupied with the endoscope is the major disadvantage for the surgeon when it comes to functional endoscopic sinus surgery (FESS). Only the other hand is free to use the surgical instruments. Tiredness or frequent instrument changes can thus lead to shaky endoscopic images. We collected the pose data (position and orientation) of the rigid 0° endoscope and all the instruments used in 16 FESS procedures with manual endoscope guidance as well as robot-assisted endoscope guidance. In combination with the DICOM CT data, we tracked the endoscope poses and workspaces using self-developed tracking markers. All surgeries were performed once with the robot and once with the surgeon holding the endoscope. Looking at the durations required, we observed a decrease in the operating time because one surgeon doing all the procedures and so a learning curve occurred what we expected. The visual inspection of the specimens showed no damages to any of the structures outside the paranasal sinuses. Robot-assisted endoscope guidance in sinus surgery is possible. Further CT data, however, are desirable for the surgical analysis of a tracker-based navigation within the anatomic borders. Our marker-based tracking of the endoscope as well as the instruments makes an automated endoscope guidance feasible. On the subjective side, we see that RASS brings a relief for the surgeon.

  11. Win a lift to the future!

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    The Communication Group is organising a competition offering people at CERN the chance to submit their ideas and win a ticket to the Lift10 Conference, which will be held in Geneva from 5 to7 May.   Lift is a community of technology "pioneers", created in 2006. It now involves more than 4,000 people from over 60 countries, who meet regularly in Europe and in Asia to explore the social implications of new technologies and the major shifts ahead. CERN is one of the academic partners of the next Lift conference, whose theme is "Connected people”. For this occasion, 10 free tickets to the conference will be awarded to the "CERNois" who come up with the best answers to the question: “How would you contribute to Lift10?” Those taking part in the competition can choose from among the following categories: - run workshop(s); - cover the conference on a blog; - coordinate a discussion during the breaks; - organize a lift@home ...

  12. Noise impact of advanced high lift systems

    Science.gov (United States)

    Elmer, Kevin R.; Joshi, Mahendra C.

    1995-03-01

    The impact of advanced high lift systems on aircraft size, performance, direct operating cost and noise were evaluated for short-to-medium and medium-to-long range aircraft with high bypass ratio and very high bypass ratio engines. The benefit of advanced high lift systems in reducing noise was found to be less than 1 effective-perceived-noise decibel level (EPNdB) when the aircraft were sized to minimize takeoff gross weight. These aircraft did, however, have smaller wings and lower engine thrusts for the same mission than aircraft with conventional high lift systems. When the advanced high lift system was implemented without reducing wing size and simultaneously using lower flap angles that provide higher L/D at approach a cumulative noise reduction of as much as 4 EPNdB was obtained. Comparison of aircraft configurations that have similar approach speeds showed cumulative noise reduction of 2.6 EPNdB that is purely the result of incorporating advanced high lift system in the aircraft design.

  13. CERN takes off at Lift11

    CERN Multimedia

    Katarina Anthony

    2011-01-01

    CERN was especially featured at the Lift11 conference, held in Geneva early this month. Tara Shears delivered a keynote speech at the event, while Paul Oortman Gerlings (DGS-SEE) and Erik van der Bij (BE-CO) – winners of the Bulletin’s Lift11 competition – organised the CERN workshop.   Paul Oortman Gerlings takes questions at CERN's Lift11 workshop. Lift11 was an opportunity for CERN to reach today’s innovators and developers. “The event was filled with people eager to learn new ideas, who were not afraid to ask questions,” says Tara Shears, physicist from the LHCb Collaboration who presented an update on the status of the LHC. “People were amazed by what goes on inside CERN, by our science, our facilities – even by the way we carry out our day-to-day work. It is a branch of fundamental research that really seems to inspire everyone.” A small Lift11 group had the chance to take a tour of CERN, ...

  14. Precision markedly attenuates repetitive lift capacity.

    Science.gov (United States)

    Collier, Brooke R; Holland, Laura; McGhee, Deirdre; Sampson, John A; Bell, Alison; Stapley, Paul J; Groeller, Herbert

    2014-01-01

    This study investigated the effect of precision on time to task failure in a repetitive whole-body manual handling task. Twelve participants were required to repetitively lift a box weighing 65% of their single repetition maximum to shoulder height using either precise or unconstrained box placement. Muscle activity, forces exerted at the ground, 2D body kinematics, box acceleration and psychophysical measures of performance were recorded until task failure was reached. With precision, time to task failure for repetitive lifting was reduced by 72%, whereas the duration taken to complete a single lift and anterior deltoid muscle activation increased by 39% and 25%, respectively. Yet, no significant difference was observed in ratings of perceived exertion or heart rate at task failure. In conclusion, our results suggest that when accuracy is a characteristic of a repetitive manual handling task, physical work capacity will decline markedly. The capacity to lift repetitively to shoulder height was reduced by 72% when increased accuracy was required to place a box upon a shelf. Lifting strategy and muscle activity were also modified, confirming practitioners should take into consideration movement precision when evaluating the demands of repetitive manual handling tasks.

  15. RESEARCH Endoscopic injection sclerotherapy for bleeding varices ...

    African Journals Online (AJOL)

    RESEARCH. 884 November 2012, Vol. 102, No. 11 SAMJ. Endoscopic injection sclerotherapy for bleeding varices in children with intrahepatic and extrahepatic portal venous ... Progress has been made in developing newer endoscopic techniques ... a sclerosant, usually 0.5 - 0.75 ml per injection, at multiple (up to.

  16. Towards automated visual flexible endoscope navigation

    NARCIS (Netherlands)

    van der Stap, N.; van der Heijden, Ferdinand; Broeders, Ivo Adriaan Maria Johannes

    2013-01-01

    Background The design of flexible endoscopes has not changed significantly in the past 50 years. A trend is observed towards a wider application of flexible endoscopes with an increasing role in complex intraluminal therapeutic procedures. The nonintuitive and nonergonomical steering mechanism now

  17. Duodenal diverticular bleeding: an endoscopic challenge

    Directory of Open Access Journals (Sweden)

    Eduardo Valdivielso-Cortázar

    Full Text Available Duodenal diverticula are an uncommon cause of upper gastrointestinal bleeding. Until recently, it was primarily managed with surgery, but advances in the field of endoscopy have made management increasingly less invasive. We report a case of duodenal diverticular bleeding that was endoscopically managed, and review the literature about the various endoscopic therapies thus far described.

  18. Endoscopic third ventriculostomy in idiopathic normal pressure ...

    African Journals Online (AJOL)

    Objective: To determine the efficacy of endoscopic fenestration of the third ventricle in the treatment of idiopathic normal pressure hydrocephalus. Methods: 16 patients with idiopathic normal pressure hydrocephalus were treated by endoscopic third ventriculostomy. This study lasted three years. All patients were over 50 ...

  19. Endoscopic management of bile leaks after laparoscopic ...

    African Journals Online (AJOL)

    Of 84 patients managed endoscopically, 44 had a cystic duct (CD) leak, 26 a CD leak and common bile duct (CBD) stones, and 14 a CBD injury amenable to endoscopic stenting. Of the 70 patients with CD leaks (group A), 24 underwent sphincterotomy only (including 8 stone extractions), 43 had a sphincterotomy with stent ...

  20. NOViSE: a virtual natural orifice transluminal endoscopic surgery simulator.

    Science.gov (United States)

    Korzeniowski, Przemyslaw; Barrow, Alastair; Sodergren, Mikael H; Hald, Niels; Bello, Fernando

    2016-12-01

    Natural orifice transluminal endoscopic surgery (NOTES) is a novel technique in minimally invasive surgery whereby a flexible endoscope is inserted via a natural orifice to gain access to the abdominal cavity, leaving no external scars. This innovative use of flexible endoscopy creates many new challenges and is associated with a steep learning curve for clinicians. We developed NOViSE-the first force-feedback-enabled virtual reality simulator for NOTES training supporting a flexible endoscope. The haptic device is custom-built, and the behaviour of the virtual flexible endoscope is based on an established theoretical framework-the Cosserat theory of elastic rods. We present the application of NOViSE to the simulation of a hybrid trans-gastric cholecystectomy procedure. Preliminary results of face, content and construct validation have previously shown that NOViSE delivers the required level of realism for training of endoscopic manipulation skills specific to NOTES. VR simulation of NOTES procedures can contribute to surgical training and improve the educational experience without putting patients at risk, raising ethical issues or requiring expensive animal or cadaver facilities. In the context of an experimental technique, NOViSE could potentially facilitate NOTES development and contribute to its wider use by keeping practitioners up to date with this novel surgical technique. NOViSE is a first prototype, and the initial results indicate that it provides promising foundations for further development.

  1. Percutaneous endoscopic gastrostomy following previous abdominal surgery.

    Science.gov (United States)

    Stellato, T A; Gauderer, M W; Ponsky, J L

    1984-01-01

    During a 36-month period, 89 patients have undergone percutaneous endoscopic gastrostomy without mortality. Of these patients, 25 (13 infants and children, 12 adults) had prior abdominal procedures that increased their risk for the endoscopic procedure. With two exceptions, all gastrostomies were performed utilizing local anesthesia. There was one major complication, a gastrocolic fistula, which was successfully managed by repeating the endoscopic gastrostomy procedure at a location more cephalad in the stomach. Twenty-two of the gastrostomies were placed for feeding purposes and all of these patients were able to leave the hospital with alimentation accomplished via the tube. Three of the endoscopically placed gastrostomies were for gastrointestinal tract decompression. A total of 255 patient months have been accumulated in these patients with the endoscopically placed gastrostomy in situ. The technique can be safely performed in patients with prior abdominal surgery and in the majority of cases is the technique of choice for establishing a tube gastrostomy. PMID:6428334

  2. Endoscopic palliation in gastric cancer

    International Nuclear Information System (INIS)

    Valdivieso, Eduardo

    2010-01-01

    The integral search for improved living conditions for those patients with gastric cancer who have not received curative surgical treatment continues to challenge the knowledge, dexterity and ethical foundations of medical teams. The justification for palliative treatment must be based on a thorough consideration of the available options and the particular situation in each case. This article reviews endoscopic therapy with auto expandable prosthetics for palliative treatment of gastric cancer, as well as the scientific evidence that supports its use and the factors that determine its indication.

  3. Lambda-Lifting in Quadratic Time

    DEFF Research Database (Denmark)

    Danvy, Olivier; Schultz, Ulrik Pagh

    2002-01-01

    local function in the source program. Each equation carries extra parameters to account for the free variables of the corresponding local function and of all its callees. It is the search for these extra parameters that yields the cubic factor in the traditional formulation of lambda-lifting, which......Lambda-lifting is a program transformation used in compilers and in partial evaluators and that operates in cubic time. In this article, we show how to reduce this complexity to quadratic time. Lambda-lifting transforms a block-structured program into a set of recursive equations, one for each...... is due to Johnsson. This search is carried out by a transitive closure. Instead, we partition the call graph of the source program into strongly connected components, based on the simple observation that all functions in each component need the same extra parameters and thus a transitive cl osure...

  4. Fuel Cell Hydroge Manifold for Lift Trucks

    DEFF Research Database (Denmark)

    Hosseinzadeh, Elham

    a virtual forklift system. This investigation examines important performance metrics such as hydrogen consumption and battery SOC as a function of fuel cell and battery size, control strategy, drive cycle, and load variation for a forklift truck system. This study can be used as a benchmark for choosing......Reducing CO2 emissions are getting more attention because of global warming. The transport sector which is responsible for a significant amount of emissions is going to reduce them due to new and upcoming regulations. Using fuel cells may be one way to help to reduce the emissions from this sector....... Battery driven lift trucks are being used more and more in different companies to reduce their emissions. However, battery driven lift trucks need long time to recharge and may be out of work for a long time. Fuel cell driven lift trucks diminish this problem and are therefore getting more attention...

  5. Face-to-face: Perceived personal relevance amplifies face processing

    Science.gov (United States)

    Pittig, Andre; Schupp, Harald T.; Alpers, Georg W.

    2017-01-01

    Abstract The human face conveys emotional and social information, but it is not well understood how these two aspects influence face perception. In order to model a group situation, two faces displaying happy, neutral or angry expressions were presented. Importantly, faces were either facing the observer, or they were presented in profile view directed towards, or looking away from each other. In Experiment 1 (n = 64), face pairs were rated regarding perceived relevance, wish-to-interact, and displayed interactivity, as well as valence and arousal. All variables revealed main effects of facial expression (emotional > neutral), face orientation (facing observer > towards > away) and interactions showed that evaluation of emotional faces strongly varies with their orientation. Experiment 2 (n = 33) examined the temporal dynamics of perceptual-attentional processing of these face constellations with event-related potentials. Processing of emotional and neutral faces differed significantly in N170 amplitudes, early posterior negativity (EPN), and sustained positive potentials. Importantly, selective emotional face processing varied as a function of face orientation, indicating early emotion-specific (N170, EPN) and late threat-specific effects (LPP, sustained positivity). Taken together, perceived personal relevance to the observer—conveyed by facial expression and face direction—amplifies emotional face processing within triadic group situations. PMID:28158672

  6. Fuel Cell Hydroge Manifold for Lift Trucks

    OpenAIRE

    Hosseinzadeh, Elham; Rokni, Masoud; Elmegaard, Brian

    2012-01-01

    Reducing CO2 emissions are getting more attention because of global warming. The transport sector which is responsible for a significant amount of emissions is going to reduce them due to new and upcoming regulations. Using fuel cells may be one way to help to reduce the emissions from this sector. Battery driven lift trucks are being used more and more in different companies to reduce their emissions. However, battery driven lift trucks need long time to recharge and may be out of work for a...

  7. Testing lifting systems in nuclear facilities

    International Nuclear Information System (INIS)

    Kling, H.; Laug, R.

    1984-01-01

    Lifting systems in nuclear facilities must be inspected at regular intervals after having undergone their first acceptance test. These inspections are frequently carried out by service firms which not only employ the skilled personnel required for such jobs but also make available the necessary test equipment. The inspections in particular include a number of sophisticated load tests for which test load systems have been developed to allow lifting systems to be tested so that reactor specific boundary conditions are taken into account. In view of the large number of facilities to be inspected, the test load system is a modular system. (orig.) [de

  8. Soccer ball lift coefficients via trajectory analysis

    Energy Technology Data Exchange (ETDEWEB)

    Goff, John Eric [Department of Physics, Lynchburg College, Lynchburg, VA 24501 (United States); Carre, Matt J, E-mail: goff@lynchburg.ed [Department of Mechanical Engineering, University of Sheffield, Sheffield S1 3JD (United Kingdom)

    2010-07-15

    We performed experiments in which a soccer ball was launched from a machine while two high-speed cameras recorded portions of the trajectory. Using the trajectory data and published drag coefficients, we extracted lift coefficients for a soccer ball. We determined lift coefficients for a wide range of spin parameters, including several spin parameters that have not been obtained by today's wind tunnels. Our trajectory analysis technique is not only a valuable tool for professional sports scientists, it is also accessible to students with a background in undergraduate-level classical mechanics.

  9. Asymmetric Gepner models II. Heterotic weight lifting

    Energy Technology Data Exchange (ETDEWEB)

    Gato-Rivera, B. [NIKHEF Theory Group, Kruislaan 409, 1098 SJ Amsterdam (Netherlands); Instituto de Fisica Fundamental, CSIC, Serrano 123, Madrid 28006 (Spain); Schellekens, A.N., E-mail: t58@nikhef.n [NIKHEF Theory Group, Kruislaan 409, 1098 SJ Amsterdam (Netherlands); Instituto de Fisica Fundamental, CSIC, Serrano 123, Madrid 28006 (Spain); IMAPP, Radboud Universiteit, Nijmegen (Netherlands)

    2011-05-21

    A systematic study of 'lifted' Gepner models is presented. Lifted Gepner models are obtained from standard Gepner models by replacing one of the N=2 building blocks and the E{sub 8} factor by a modular isomorphic N=0 model on the bosonic side of the heterotic string. The main result is that after this change three family models occur abundantly, in sharp contrast to ordinary Gepner models. In particular, more than 250 new and unrelated moduli spaces of three family models are identified. We discuss the occurrence of fractionally charged particles in these spectra.

  10. Maximum Voluntary Isometric Contraction produced in three static lifting styles

    Directory of Open Access Journals (Sweden)

    Sarrafzadeh J

    2007-05-01

    Full Text Available Background: There is considerable professional debate over which technique is the best for lifting. The aim of this study is to compare three static lifting styles, the stoop, semi-squat and arm lift, using maximum isometric voluntary contraction (MIVC as one indicator for recommending a lifting style. Methods: Thirty healthy women (mean age: 22.37 years participated in this quasi-experimental study. They performed the tests in static postures by standing on the platform of the Lift TrackTM and pulling the dynamometer of the instrument with maximum effort in three lifting styles: the stoop, semi-squat and arm lift. The subjects warmed-up by practicing the lifts first. The mean MIVC from the two other sets of lifts were used for statistical analysis by repeated measurements and SPSS (ver.10 software. Results: There were significant differences between the MIVC of the three lifting styles in this study. The largest MIVC was for the semi-squat lift and was the least was for the arm lift (p<0.001. The MIVC of the stoop lift was larger than that of the arm lift (p<0.001. Conclusion: The largest MIVC for the semi-squat lift suggests that this style is useful for lifting objects from the floor. The differences in biomechanical and muscle pattern activity changes could explain these results. It seems that activation of the quadriceps muscles in the semi-squat lift was a main factor for producing more MIVC, so when this style is recommended for lifting, attention to the power of the quadriceps is important.

  11. Presto lift?a facelift that preserves the retaining ligaments and SMAS tethering

    OpenAIRE

    Funk, Wolfgang

    2016-01-01

    Background Producing youthful facial appearance by face-lifting often comes along with an undesired loss of patient?s individual phenotype. This may result from insufficient preservation of retaining ligaments, the ?guardians of facial identify,? and from severance of the intersegmental connections of the superficial musculo-aponeurotic system (SMAS), which tether, structure, and compartmentalize facial soft tissue into defined, relevant anatomical zones. Methods The technique reported here p...

  12. [Therapeutic aspects of endoscopic polypectomy].

    Science.gov (United States)

    Kratzsch, K H; Stibenz, J; Fürstenau, M; Winkelvoss, H; Büttner, W; Jacobasch, K H; Gütz, H J; Irro, F

    1980-02-15

    466 endoscopic polypectomies of the upper and lower gastrointestinal tract were analysed according to their curative value. In 254 removed polyps of the upper gastrointestinal tract the result of the histological examination was twice a proof of a carcinoma. One it had to be after-resected, once a carcinoid, five times bleeding polyps were removed. Four times prolapsing gastric polyps were removed in the bulbus duodeni. In these cases intermittent disturbances of the passage could be repaired. Thus the endoscopic polypectomy in the upper gastrointestinal tract was of therapeutic value in 4.3%. In the lower intestinal tract in 204 polypectomies 16 focal carcinomas or invasive carcinomas removed in the healthy tissue, 1 carcinoid and 98 bleeding adenomas were cut away. Thus the coloscopic polypectomy was connected with a therapeutic use in 56.3%. 81.8% of the polyps was tubular, papillary or villous adenomas. Taking into consideration the "adenoma-cancer-sequence", the coloscopic polypectomy must thus be regarded as a prophylactic and curative method, while in the polypectomy in the upper gastrointestinal tract the diagnostic value is in the first place.

  13. The lift-fan powered-lift aircraft concept: Lessons learned

    Science.gov (United States)

    Deckert, Wallace H.

    1993-01-01

    This is one of a series of reports on the lessons learned from past research related to lift-fan aircraft concepts. An extensive review is presented of the many lift-fan aircraft design studies conducted by both government and industry over the past 45 years. Mission applications and design integration including discussions on manifolding hot gas generators, hot gas dusting, and energy transfer control are addressed. Past lift-fan evaluations of the Avrocar are discussed. Lessons learned from these past efforts are identified.

  14. From an urologist view: are we safe with endoscopic surgery? Overview of ergonomic problems encountered by the urologist during video endoscopic surgery.

    Science.gov (United States)

    Sataa, Sallami; Benzarti, Aida; Ben Jemaa, Abdelmajid

    2012-12-01

    The importance of minimally invasive surgery in urology has constantly increased in the last 20 years. Endoscopic resection of prostate and bladder tumors is actually a gold standard with many advantages for patients. To analyze the problems related to the ergonomic conditions faced by urologist during video endoscopic surgery by review of the recent literature. All evidence-based experimental ergonomic studies conducted in the fields of urology endoscopic surgery and applied ergonomics for other professions working with a display were identified by PubMed searches. Data from ergonomic studies were evaluated in terms of efficiency as well as comfort and safety aspects. Constraint postures for urologists are described and ergonomic requirements for optimal positions are discussed. The ergonomics of urological endoscopic surgery place urologists at risk for potential injury. The amount of neck flexion or extension, the amount of shoulder girdle adduction or abduction used, and stability of the upper extremities during surgery; which are maintained in a prolonged static posture; are the main risk factors. All these constraints may lead to muscle and joint fatigue, pain, and eventual musculoskeletal injury. Moreover, these issues may impact surgical accuracy. Urologist posture, operating period, training are important ergonomic factor during video surgery to prevent musculoskeletal disorders.

  15. Endoscopic management of bleeding peptic ulcers

    International Nuclear Information System (INIS)

    Farooqi, J.I.; Farooqi, R.J.

    2001-01-01

    Peptic ulcers account for more than half of the cases of non variceal upper gastrointestinal (GI) bleeding and therefore, are the focus of most of the methods of endoscopic hemostasis. Surgical intervention is now largely reserved for patients in whom endoscopic hemostasis has failed. A variety of endoscopic techniques have been employed to stop bleeding and reduce the risk of rebleeding, with no major differences in outcome between these methods. These include injection therapy, fibrin injection, heater probe, mono polar electrocautery, bipolar electrocautery, lasers and mechanical hemo clipping. The most important factor in determining outcome after gastrointestinal bleeding is rebleeding or persistent bleeding. The endoscopic appearance of an ulcer, however, provides the most useful prognostic information for bleeding. Recurrent bleeding after initial endoscopic hemostasis occurs in 15-20% of patients with a bleeding peptic ulcer. The best approach to these patients remains controversial; the current options are repeat endoscopic therapy with the same or a different technique, emergency surgery or semi elective surgery after repeat endoscopic hemostasis. The combination of epinephrine injection with thermal coagulation may be more effective than epinephrine injection alone. Newer modalities such as fibrin injection or the application of hemo clips appear promising and comparative studies are awaited. (author)

  16. Endoscopic approaches to treatment of achalasia

    Science.gov (United States)

    Friedel, David; Modayil, Rani; Iqbal, Shahzad; Grendell, James H.

    2013-01-01

    Endoscopic therapy for achalasia is directed at disrupting or weakening the lower esophageal sphincter (LES). The two most commonly utilized endoscopic interventions are large balloon pneumatic dilation (PD) and botulinum toxin injection (BTI). These interventions have been extensively scrutinized and compared with each other as well as with surgical disruption (myotomy) of the LES. PD is generally more effective in improving dysphagia in achalasia than BTI, with the latter reserved for infirm older people, and PD may approach treatment results attained with myotomy. However, PD may need to be repeated. Small balloon dilation and endoscopic stent placement for achalasia have only been used in select centers. Per oral endoscopic myotomy is a newer endoscopic modality that will likely change the treatment paradigm for achalasia. It arose from the field of natural orifice transluminal endoscopic surgery and represents a scarless endoscopic approach to Heller myotomy. This is a technique that requires extensive training and preparation and thus there should be rigorous accreditation and monitoring of outcomes to ensure safety and efficacy. PMID:23503707

  17. Computation of Lifting Wing-Flap Configurations

    Science.gov (United States)

    Cantwell, Brian; Kwak, Dochan

    1996-01-01

    Research has been carried out on the computation of lifting wing-flap configurations. The long term goal of the research is to develop improved computational tools for the analysis and design of high lift systems. Results show that state-of-the-art computational methods are sufficient to predict time-averaged lift and overall flow field characteristics on simple high-lift configurations. Recently there has been an increased interest in the problem of airframe generated noise and experiments carried out in the 7 x 10 wind tunnel at NASA Ames have identified the flap edge as an important source of noise. A follow-on set of experiments will be conducted toward the end of 1995. The computations being carried out under this project are coordinated with these experiments. In particular, the model geometry being used in the computations is the same as that in the experiments. The geometry consists of a NACA 63-215 Mod B airfoil section which spans the 7 x lO tunnel. The wing is unswept and has an aspect ratio of two. A 30% chord Fowler flap is deployed modifications of the flap edge geometry have been shown to be effective in reducing noise and the existing code is currently being used to compute the effect of a modified geometry on the edge flow.

  18. Leading-Edge Vortex lifts swifts

    NARCIS (Netherlands)

    Videler, JJ; Stamhuis, EJ; Povel, GDE

    2004-01-01

    The current understanding of how birds fly must be revised, because birds use their hand-wings in an unconventional way to generate lift and drag. Physical models of a common swift wing in gliding posture with a 60degrees sweep of the sharp hand-wing leading edge were tested in a water tunnel.

  19. Occupational lifting and pelvic pain during pregnancy

    DEFF Research Database (Denmark)

    Larsen, Pernille Stemann; Strandberg-Larsen, Katrine; Juhl, Mette

    2013-01-01

    OBJECTIVES: Pelvic pain during pregnancy is a common ailment, and the disease is a major cause of sickness absence during pregnancy. It is plausible that occupational lifting may be a risk factor of pelvic pain during pregnancy, but no previous studies have examined this specific exposure. The ai...

  20. Adaptive wavelet lifting for image retrieval

    NARCIS (Netherlands)

    P.J. Oonincx; P.M. de Zeeuw (Paul); A.F. Laine; M.A. Unser; A. Aldroubi

    2001-01-01

    htmlabstractWe build a feature vector that can be used for content-based image retrieval of grayscale images of objects against a background of texture. The feature vector is based on moment invariants of detail coefficients produced by the lifting scheme. The prediction filters in this scheme are

  1. The Revolutionary Vertical Lift Technology (RVLT) Project

    Science.gov (United States)

    Yamauchi, Gloria K.

    2018-01-01

    The Revolutionary Vertical Lift Technology (RVLT) Project is one of six projects in the Advanced Air Vehicles Program (AAVP) of the NASA Aeronautics Research Mission Directorate. The overarching goal of the RVLT Project is to develop and validate tools, technologies, and concepts to overcome key barriers for vertical lift vehicles. The project vision is to enable the next generation of vertical lift vehicles with aggressive goals for efficiency, noise, and emissions, to expand current capabilities and develop new commercial markets. The RVLT Project invests in technologies that support conventional, non-conventional, and emerging vertical-lift aircraft in the very light to heavy vehicle classes. Research areas include acoustic, aeromechanics, drive systems, engines, icing, hybrid-electric systems, impact dynamics, experimental techniques, computational methods, and conceptual design. The project research is executed at NASA Ames, Glenn, and Langley Research Centers; the research extensively leverages partnerships with the US Army, the Federal Aviation Administration, industry, and academia. The primary facilities used by the project for testing of vertical-lift technologies include the 14- by 22-Ft Wind Tunnel, Icing Research Tunnel, National Full-Scale Aerodynamics Complex, 7- by 10-Ft Wind Tunnel, Rotor Test Cell, Landing and Impact Research facility, Compressor Test Facility, Drive System Test Facilities, Transonic Turbine Blade Cascade Facility, Vertical Motion Simulator, Mobile Acoustic Facility, Exterior Effects Synthesis and Simulation Lab, and the NASA Advanced Supercomputing Complex. To learn more about the RVLT Project, please stop by booth #1004 or visit their website at https://www.nasa.gov/aeroresearch/programs/aavp/rvlt.

  2. Robotic endoscope motor module and gearing design.

    Science.gov (United States)

    Oliveira, Jillian M; Chen, Yi; Hunter, Ian W

    2011-01-01

    Actuation of a robotic endoscope with increased torque output is presented. This paper will specifically focus on the motor module section of a robotic endoscope, which comprises of a pair of motors and gear reduction assemblies. The results for the endoscope and biopsy tool stiffness, as well as the stall force and force versus speed characteristics of the motor module assembly are shown. The scope stiffness was found to be 0.006 N/degree and additional stiffness of the biopsy tools were found to be in the range of 0.09 to 0.13 N/degree. Calculations for worm gearing and efficiency are discussed.

  3. [PACS-based endoscope image acquisition workstation].

    Science.gov (United States)

    Liu, J B; Zhuang, T G

    2001-01-01

    A practical PACS-based Endoscope Image Acquisition Workstation is here introduced. By a Multimedia Video Card, the endoscope video is digitized and captured dynamically or statically into computer. This workstation realizes a variety of functions such as the endoscope video's acquisition and display, as well as the editing, processing, managing, storage, printing, communication of related information. Together with other medical image workstation, it can make up the image sources of PACS for hospitals. In addition, it can also act as an independent endoscopy diagnostic system.

  4. Management of Nodular Neoplasia in Barrett's Esophagus: Endoscopic Mucosal Resection and Endoscopic Submucosal Dissection.

    Science.gov (United States)

    Belghazi, Kamar; Bergman, Jacques J G H M; Pouw, Roos E

    2017-07-01

    Endoscopic resection has proven highly effective and safe in the removal of focal early neoplastic lesions in Barrett's esophagus and is considered the cornerstone of endoscopic treatment. Several techniques are available for endoscopic resection in Barrett's esophagus. The most widely used technique for piecemeal resection of early Barrett's neoplasia is the ligate-and-cut technique. Newer techniques such as endoscopic submucosal dissection may also play a role in the treatment of neoplastic Barrett's esophagus. Treatment of early Barrett's neoplasia should be centralized and limited to expert centers with a high-volume load and sufficient expertise in the detection and treatment of esophageal neoplasia. Copyright © 2017 Elsevier Inc. All rights reserved.

  5. CFD Study of a New Annular Lift Fan Configuration with High Lift Efficiency

    Directory of Open Access Journals (Sweden)

    Yun Jiang

    2017-03-01

    Full Text Available A new annular lift fan configuration that has very high lift efficiency is explored by using a numerical scheme. The inlet lip radius and diffuser angle are maximized by semicircle duct walls and the location of the lift fan is moved from the throat to the diffuser area to maximize the diffusion effect of the ducted fan. The improved lift fan achieves the figure of merit of 0.772 and the power loading of 9.03 lbs/hp without ground effect, very close to the theoretical limit. Under the ground effect, the figure of merit reaches 0.822 with the power loading of 9.62 lbs/hp. The improved lift efficiency deteriorates the transition characteristics with higher momentum drag and pitching moment. However, with the aid of jet thrusts directly providing part of the lift during transition, the peak of momentum drag and pitching moment can be lowered. A total thrust to weight ratio of 0.7 is enough for all of the requirements in transition and in hover and for the maximum speed of 0.75 Mach in cruise flight.

  6. Development of automated endoscopes for dimensional micro-measurements

    Science.gov (United States)

    Hrebabetzky, Frank

    2013-04-01

    Increasing demands for product quality and outsourcing of production in the automobile industry lead to in­ creasingly tight tolerances for the components. In the area of metal-mechanics these are largely dimensional and require frequently uncertainties in the micron region. For optical instruments this means microscopical resolu­ tion. Dimensional measurement with uncertainties of some microns is nothing new, state of the art equipment in fact goes far below. The task becomes difficult if the measurements have to be carried out in an industrial production environment - and deep inside a bore hole. This paper describes the development of an automatic measurement system for internal dimensions of brake master cylinders, specifically the development of endoscopes, illuminations for edge detection, and integration with other sensors, actuators and controllers. The most demanding part was the endoscope development, because, surprisingly, no commercial product for microscopic view and precision measurements was found on the market. As the market for such measurement machines is very small, and as the requirements were different for each endoscope, the budget allowed only the development of prototypes, using readily available optical components. Borders between faces with different orientation of metallic structures can be difficult do detect. A satisfactory metrological performance can be achieved only with carefully shaped illumination, even if the source is a simple LED (light emitting diode). The automation was responsible for the largest part of the overall cost, coming from the desire for a high throughput of the measurement machine, even when operated by not highly qualified personnel. With the safety requirements satisfied, such a device ends up as a pretty complex equipment. Nevertheless, these aspects will be mentioned only for completeness, because standard components and methods were applied.

  7. [Intra vesical explosion during an endoscopic resection of a vesical tumor].

    Science.gov (United States)

    Ben Jeddou, Faiçal; Ghozzi, Samir; Ktari, Mehdi; Ben Rais, Nawfel

    2006-06-01

    The intra vesical combustion of hydrogen and oxygen, form one mixture of explosive gas. Intra vesicale explosion during trans urethral resection is one rare incident. Its most dangerous manifestation during is vesical rupture. We demonstrate one case of intra vesical explosion during one endoscopic resection of one in the anterior face tumor of bladder. Damages on bladder are small. By going back to literature, we try to discuss the origin of intra vesical hydrogen and oxygen as well as the different preventive measures.

  8. 14 CFR 25.699 - Lift and drag device indicator.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Lift and drag device indicator. 25.699....699 Lift and drag device indicator. (a) There must be means to indicate to the pilots the position of each lift or drag device having a separate control in the cockpit to adjust its position. In addition...

  9. Endoscopic-assisted treatment of trigonocephaly.

    Science.gov (United States)

    Hinojosa, J

    2012-09-01

    Minimally invasive, endoscopic repair of metopic craniosynostosis has emerged as a potentially efficacious, safe, and aesthetically acceptable alternative to open procedures. Potential advantages of an early endoscopic approach to repair metopic craniosynostosis include a reduction in blood loss and consequent decreases in transfusion volumes, decreased hospital costs, shorter operative times, and limited duration of hospitalization. Other benefits of minimally invasive techniques would be avoidance of anaesthetic surgical scarring, decrease in postoperative swelling and discomfort, and lower rate of complications such as duramater tears, postoperative hyperthermia, or infection. However, a concern is usually raised about the achievements of the "endoscopic" techniques when compared to "standard" open approaches. The indications for endoscopic-assisted surgery in the treatment of trigonocephaly remain controversial and further series and follow-up of these patients are necessary to set up the role of these approaches.

  10. Cholangiography and endoscopic sphincterotomy in the ...

    African Journals Online (AJOL)

    Cholangiography and endoscopic sphincterotomy in the management of severe acute gallstone pancreatitis discovered at diag~osticlaparotomy. ... in these cases Included cholecystectomy and Ttube drainage (2 patients) cholecystostomy drainage (3 patients), and closure of the abdomen without drainage (2 patients).

  11. Endoscopic appearance of irradiated gastric mucosa

    Energy Technology Data Exchange (ETDEWEB)

    De Sagher, L.I.; Van den Heule, B.; Van Houtte, P.; Engelholm, L.; Balikdjan, D.; Bleiberg, H.

    1979-09-01

    Irradiation of the epigastric area for gastric cancer may induce actinic lesions of the stomach characterized on endoscopic examination by ulcerations, haemorrhagic gastritis, fragility of the mucosa, thickening and congestion of the gastric folds.

  12. Vagal withdrawal during endoscopic retrograde cholangiopancreatography

    DEFF Research Database (Denmark)

    Christensen, M; Rasmussen, Verner; Schulze, S

    2000-01-01

    BACKGROUND: Patients undergoing endoscopic retrograde cholangiopancreatography (ERCP) are at risk of developing cardiorespiratory complications, but the mechanism is still unknown. Treatment with metoprolol 2 h before the endoscopy has been shown to decrease the incidence of myocardial ischaemia...

  13. Diagnosis and management of iatrogenic endoscopic perforations

    DEFF Research Database (Denmark)

    Paspatis, Gregorios A; Dumonceau, Jean-Marc; Barthet, Marc

    2014-01-01

    center implements a written policy regarding the management of iatrogenic perforation, including the definition of procedures that carry a high risk of this complication. This policy should be shared with the radiologists and surgeons at each center. 2 In the case of an endoscopically identified......This Position Paper is an official statement of the European Society of Gastrointestinal Endoscopy (ESGE). It addresses the diagnosis and management of iatrogenic perforation occurring during diagnostic or therapeutic digestive endoscopic procedures. Main recommendations 1 ESGE recommends that each...... management should be based on the estimated success of the endoscopic closure and on the general clinical condition of the patient. In the case of no or failed endoscopic closure of the iatrogenic perforation, and in patients whose clinical condition is deteriorating, hospitalization and surgical...

  14. The influence of flight style on the aerodynamic properties of avian wings as fixed lifting surfaces

    Directory of Open Access Journals (Sweden)

    John J. Lees

    2016-10-01

    Full Text Available The diversity of wing morphologies in birds reflects their variety of flight styles and the associated aerodynamic and inertial requirements. Although the aerodynamics underlying wing morphology can be informed by aeronautical research, important differences exist between planes and birds. In particular, birds operate at lower, transitional Reynolds numbers than do most aircraft. To date, few quantitative studies have investigated the aerodynamic performance of avian wings as fixed lifting surfaces and none have focused upon the differences between wings from different flight style groups. Dried wings from 10 bird species representing three distinct flight style groups were mounted on a force/torque sensor within a wind tunnel in order to test the hypothesis that wing morphologies associated with different flight styles exhibit different aerodynamic properties. Morphological differences manifested primarily as differences in drag rather than lift. Maximum lift coefficients did not differ between groups, whereas minimum drag coefficients were lowest in undulating flyers (Corvids. The lift to drag ratios were lower than in conventional aerofoils and data from free-flying soaring species; particularly in high frequency, flapping flyers (Anseriformes, which do not rely heavily on glide performance. The results illustrate important aerodynamic differences between the wings of different flight style groups that cannot be explained solely by simple wing-shape measures. Taken at face value, the results also suggest that wing-shape is linked principally to changes in aerodynamic drag, but, of course, it is aerodynamics during flapping and not gliding that is likely to be the primary driver.

  15. The influence of flight style on the aerodynamic properties of avian wings as fixed lifting surfaces.

    Science.gov (United States)

    Lees, John J; Dimitriadis, Grigorios; Nudds, Robert L

    2016-01-01

    The diversity of wing morphologies in birds reflects their variety of flight styles and the associated aerodynamic and inertial requirements. Although the aerodynamics underlying wing morphology can be informed by aeronautical research, important differences exist between planes and birds. In particular, birds operate at lower, transitional Reynolds numbers than do most aircraft. To date, few quantitative studies have investigated the aerodynamic performance of avian wings as fixed lifting surfaces and none have focused upon the differences between wings from different flight style groups. Dried wings from 10 bird species representing three distinct flight style groups were mounted on a force/torque sensor within a wind tunnel in order to test the hypothesis that wing morphologies associated with different flight styles exhibit different aerodynamic properties. Morphological differences manifested primarily as differences in drag rather than lift. Maximum lift coefficients did not differ between groups, whereas minimum drag coefficients were lowest in undulating flyers (Corvids). The lift to drag ratios were lower than in conventional aerofoils and data from free-flying soaring species; particularly in high frequency, flapping flyers (Anseriformes), which do not rely heavily on glide performance. The results illustrate important aerodynamic differences between the wings of different flight style groups that cannot be explained solely by simple wing-shape measures. Taken at face value, the results also suggest that wing-shape is linked principally to changes in aerodynamic drag, but, of course, it is aerodynamics during flapping and not gliding that is likely to be the primary driver.

  16. Endoscopic mucosal resection of lateral spreading tumors of the colon using a novel solution.

    Science.gov (United States)

    Katsinelos, Panagiotis; Paroutoglou, George; Beltsis, Athanasios; Chatzimavroudis, Grigoris; Papaziogas, Basilis; Katsinelos, Taxiarchis; Rizos, Christos; Tzovaras, George; Vasiliadis, Ioannis; Dimiropoulos, Stavros

    2006-04-01

    Lateral spreading tumors (LSTs) of the colon are lesions over 10 mm in diameter that are low in height and grow superficially. They are increasingly being diagnosed in Western cohorts. The aim of this study was to investigate the safety and efficacy of dextrose 50% solution in the endoscopic mucosal resection (EMR) of LSTs. The study population consisted of 21 patients with LSTs of the colorectum. The mean size of the LSTs was 23.52+/-13.60 mm. Dextrose 50% solution was injected, via a variceal needle, into the submucosa to lift up the LST sufficiently from the proper muscle layer. Subsequently, a snare was positioned around the lesion and then closed while being pressed against the mucosa, with suction being applied to draw the lesion into the snare. Blended current was used for resection. If necessary, a piecemeal technique was used to achieve complete resection. Immediate and delayed complications were recorded. After the EMR, patients were followed up at 3, 6, and 12 months or later, using total colonoscopy. Endoscopic resection was completed in all LSTs. Of the 21 LSTs, 15 (71.4%) were resected en bloc and 6 (28.6%) piecemeal. The mean amount of injected dextrose 50% solution was 14.86+/-9.13 mL. One patient (4.78%) had immediate bleeding after EMR, which was stopped endoscopically. Histologic examination of resected LSTs showed adenoma with high-grade dysplasia 9 (42.9%), adenoma with low-grade dysplasia 10 (47.6%), and invasive carcinoma 2 (9.5%). Twenty patients were followed up for 37.9+/-24.03 months. Local recurrent disease was detected in 4 patients (20%), all within 6 months of the index EMR. These recurrent lesions were completely resected endoscopically. The contribution of submucosal injection of dextrose 50% is significant for a safe and efficient EMR of LSTs of the colorectum.

  17. TV endoscope system for composite clinical application

    International Nuclear Information System (INIS)

    Endo, Noriaki; Shimura, Yasushi

    1994-01-01

    Toshiba developed a third-generation TV endoscope system in 1992, model TRE-3000, featuring high image quality. The concept of 'pursuit of a system for composite clinical application' was fully taken into account in the development of the system. This paper describes the new system, which has the capability to display both endoscopic images and X-ray images on the same TV monitor. (author)

  18. Endoscopic approaches to treatment of achalasia

    OpenAIRE

    Stavropoulos, Stavros N.; Friedel, David; Modayil, Rani; Iqbal, Shahzad; Grendell, James H.

    2013-01-01

    Endoscopic therapy for achalasia is directed at disrupting or weakening the lower esophageal sphincter (LES). The two most commonly utilized endoscopic interventions are large balloon pneumatic dilation (PD) and botulinum toxin injection (BTI). These interventions have been extensively scrutinized and compared with each other as well as with surgical disruption (myotomy) of the LES. PD is generally more effective in improving dysphagia in achalasia than BTI, with the latter reserved for infir...

  19. An unusual experience with endoscopic retrograde cholangiopancreatography

    Directory of Open Access Journals (Sweden)

    Mallikarjun Patil

    2013-01-01

    Full Text Available The endoscopic retrograde cholangiopancreatography (ERCP is known for its varied diagnostic and therapeutic utility for a variety of disorders. However it has greater likelihood of procedure related complications among the endoscopic procedures of gastrointestinal tract. The extraluminal hemorrhagic complications following ERCP are potentially life threatening though relatively rare. We present a 50 year patient with choledocholithiasis and cholelithiasis developing rare complication of subcapsular hepatic hematoma, following ERCP due to guide wire injury.

  20. Lift and Drag Measurements of Superhydrophobic Hydrofoils

    Science.gov (United States)

    Sur, Samrat; Kim, Jeong-Hyun; Rothstein, Jonathan

    2015-11-01

    For several years, superhydrophobic surfaces which are chemically hydrophobic with micron or nanometer scale surface features have been considered for their ability to reduce drag and produce slip in microfluidic devices. More recently it has been demonstrated that superhydrophobic surfaces reduce friction coefficient in turbulent flows as well. In this talk, we will consider that modifying a hydrofoil's surface to make it superhydrophobic has on the resulting lift and drag measurements over a wide range of angles of attack. Experiments are conducted over the range of Reynolds numbers between 10,000hydrofoil is made superhydrophobic. The hydrofoils are coated Teflon that has been hot embossed with a 325grit stainless steel woven mesh to produce a regular pattern of microposts. In addition to fully superhydrophobic hydrofoils, selectively coated symmetrical hydrofoils will also be examined to study the effect that asymmetries in the surface properties can have on lift and drag. Partially funded by NSF CBET-1334962.

  1. Lambda-Lifting in Quadratic Time

    DEFF Research Database (Denmark)

    Danvy, Olivier; Schultz, Ulrik Pagh

    2002-01-01

    Lambda-lifting is a program transformation that is used in compilers, partial evaluators, and program transformers. In this article, we show how to reduce its complexity from cubic time to quadratic time, and we present a flow-sensitive lambda-lifter that also works in quadratic time. Lambda......-lifting transforms a block-structured program into a set of recursive equations, one for each local function in the source program. Each equation carries extra parameters to account for the free variables of the corresponding local function and of all its callees. It is the search for these extra parameters...... on the simple observation that all functions in each component need the same extra parameters and thus a transitive closure is not needed. We therefore simplify the search for extra parameters by treating each strongly connected component instead of each function as a unit, thereby reducing the time complexity...

  2. Lambda-Lifting in Quadratic Time

    DEFF Research Database (Denmark)

    Danvy, Olivier; Schultz, Ulrik Pagh

    2003-01-01

    Lambda-lifting is a program transformation that is used in compilers, partial evaluators, and program transformers. In this article, we show how to reduce its complexity from cubic time to quadratic time, and we present a flow-sensitive lambda-lifter that also works in quadratic time. Lambda......-lifting transforms a block-structured program into a set of recursive equations, one for each local function in the source program. Each equation carries extra parameters to account for the free variables of the corresponding local function and of all its callees. It is the search for these extra parameters...... on the simple observation that all functions in each component need the same extra parameters and thus a transitive closure is not needed. We therefore simplify the search for extra parameters by treating each strongly connected component instead of each function as a unit, thereby reducing the time complexity...

  3. Lambda-Lifting in Quadratic Time

    DEFF Research Database (Denmark)

    Danvy, Olivier; Schultz, Ulrik Pagh

    2004-01-01

    Lambda-lifting is a program transformation that is used in compilers, partial evaluators, and program transformers. In this article, we show how to reduce its complexity from cubic time to quadratic time, and we present a flow-sensitive lambda-lifter that also works in quadratic time. Lambda......-lifting transforms a block-structured program into a set of recursive equations, one for each local function in the source program. Each equation carries extra parameters to account for the free variables of the corresponding local function and of all its callees. It is the search for these extra parameters...... on the simple observation that all functions in each component need the same extra parameters and thus a transitive closure is not needed. We therefore simplify the search for extra parameters by treating each strongly connected component instead of each function as a unit, thereby reducing the time complexity...

  4. Mobile Motorcycle Lift for the Common Man

    Directory of Open Access Journals (Sweden)

    Timothy Foley Joseph

    2017-01-01

    Full Text Available Motorcycle enthusiasts often need to spend significant amounts of time tuning and improving their bikes. Traditionally this is done by hobbyists by using the bike's own stand which can be dangerous due to its instability. For those with a little more money, a dedicated free-standing bike stand is the fixture of choice. Unfortunately, many of the bike stands are too expensive, too big, or have very weak ergonomics. In this paper, we present a motorcycle lift designed using Axiomatic Design that has a small footprint, is adjustable for a large range of different bikes and users, and can be mounted without the user lifting the bike. Though this prototype design is more expensive than the simple bike stands, we believe its functionality makes it well worth the extra cost.

  5. Lifting CERN entrepreneurs to new heights

    CERN Multimedia

    William Rode

    2014-01-01

    How can an international research institution help employees who wish to leave their comfort zone for the risky endeavour of starting a company? CERN encourages the creation of companies as a way of disseminating technology developed here. But what else can be done to foster these initiatives?   William Rode, a technical student in CERN’s Knowledge Transfer Group, studied spin-off creations in some leading research institutions as part of his Master's thesis in entrepreneurship at the Norwegian University of Science and Technology. William, who was offered a ticket to attend the Lift14 conference in Geneva, shares some insight into how we can support entrepreneurship at CERN: "A while ago I attended the Lift conference in Geneva. The conference explores the business and social implications of technology innovation through talks and workshops, as well as through art and discussion. Innovation is at the core of the conference and is reflected in the open-mindedness of th...

  6. Clamp usable as jig and lifting clamp

    Science.gov (United States)

    Tsuyama, Yoshizo

    1976-01-01

    There is provided a clamp which is well suited for use as a lifting clamp for lifting and moving materials of assembly in a shipyard, etc. and as a pulling jig in welding and other operations. The clamp comprises a clamp body including a shackle for engagement with a pulling device and a slot for receiving an article, and a pair of jaws provided on the leg portions of the clamp body on the opposite sides of the slot to grip the article in the slot, one of said jaws consisting of a screw rod and the other jaw consisting of a swivel jaw with a spherical surface, whereby when the article clamped in the slot by the pair of jaws tends to slide in any direction with respect to the clamp body, the article is more positively gripped by the pair of jaws.

  7. Eisenhart lift for higher derivative systems

    Energy Technology Data Exchange (ETDEWEB)

    Galajinsky, Anton, E-mail: galajin@tpu.ru; Masterov, Ivan, E-mail: masterov@tpu.ru

    2017-02-10

    The Eisenhart lift provides an elegant geometric description of a dynamical system of second order in terms of null geodesics of the Brinkmann-type metric. In this work, we attempt to generalize the Eisenhart method so as to encompass higher derivative models. The analysis relies upon Ostrogradsky's Hamiltonian. A consistent geometric description seems feasible only for a particular class of potentials. The scheme is exemplified by the Pais–Uhlenbeck oscillator.

  8. Lift of dilogarithm to partition identities

    International Nuclear Information System (INIS)

    Terhoeven, M.

    1992-11-01

    For the whole set of dilogarithm identities found recently using the thermodynamic Bethe-Ansatz for the ADET series of purely elastic scattering theories we give partition identities which involve characters of those conformal field theories which correspond to the UV-limits of the scattering theories. These partition identities in turn allow to derive the dilogarithm identities using modular invariance and a saddle point approximation. We conjecture on possible generalizations of this correspondance, namely, a lift from dilogarithm to partition identities. (orig.)

  9. Pressure Roller For Tape-Lift Tests

    Science.gov (United States)

    Abrams, Eve

    1991-01-01

    Rolling device applies nearly constant, uniform pressure to surface. Simple tool exerts nearly constant pressure via compression of sheath by fixed amount. Pins hold wheels on cylinder and cylinder on tangs of handle. Cylinder and handle made of metal or plastic. Sheath press-fit or glued to cylinder. End pins attached to cylinder by adhesive or screw threads. Device intended for use in taking tape-lift samples of particulate contamination on surface.

  10. Analysis of the Umbrella Roof for lifting

    International Nuclear Information System (INIS)

    Shaaban, A.

    1983-01-01

    In addition to supporting the dead loads and the operational loads, the Umbrella Roof (UR) has two major functions to which it was designed. First is to allow access for repair and removal of any of the TF coils, the upper PF coils and the Vacuum Vessel sections; and second, is to reproduce the exact positioning of the upper PF coils every time the UR is placed over the Tokamac. To provide these functions, the UR is designed to be lifted as one integrated structure to which the upper PF coils are attached. In order to ensure precise positioning of the UR, a redundant system of 13 guide pins were provided on the bottom of the radial beams, and four shear lugs were provided atop the central column. Mating reciprocals with very close tolerance for the guide pins were provided in the tops of the 13 peripheral columns. To meet close tolerances and to accommodate such high redundancy in match points, accurate analysis was necessary by which the center of gravity of the UR can be located and the deflection of all match points can be computed. Also stress analysis of the members of the UR was necessary because when the UR is lifted it is denied the midpoint support over the center column; and also the beams of the UR are not interconnected by moment-capable joints, thus if provisions are not made to support every radial beam, those which are not supported would yield and collapse. In this paper, the lifting schemes proposed for the UR are discussed and the results of the analysis performed for the elected scheme are presented. Also presented is a unique application of the NASTRAN code by which the center of gravity of the UR was located by allowing a refined model of the UR to swing until it came to rest under an arbitrary lift point

  11. European cinema: face to face with Hollywood

    NARCIS (Netherlands)

    Elsaesser, T.

    2005-01-01

    In the face of renewed competition from Hollywood since the early 1980s and the challenges posed to Europe's national cinemas by the fall of the Wall in 1989, independent filmmaking in Europe has begun to re-invent itself. European Cinema: Face to Face with Hollywood re-assesses the different

  12. Neck lift my way: an update.

    Science.gov (United States)

    Feldman, Joel J

    2014-12-01

    The author updates prior descriptions of an approach to the surgical neck lift that aims for a maximum degree of control over the size, shape, and position of every anatomical feature of the neck that is negatively affecting its appearance. A 38-year clinical experience guided the development of the operative tactics that define the strategy. Data collected from a records review of 522 consecutive neck lifts performed during the 10-year period 2004 through 2013 further inform the report. The approach has eight features: (1) nearly routine use of open submental access to all tissue layers of the central neck, including a regimen that curbed the problems that may attend an extensive tissue dissection; (2) management of lax neck skin by lateral excision using a specific postauricular incision, or by using the nonexcisional method of redistribution; (3) open lipectomy for precise removal of excess subcutaneous neck and jawline fat; (4) individualized modifications to subplatysmal fat, perihyoid fascia, and anterior digastric muscles; (5) treatment of large, ptotic, or malpositioned submandibular salivary glands by partial excision using a transcutaneous traction suture; (6) the current version of the corset platysmaplasty, which is used to treat static paramedian platysma muscle bands, and to avoid contour imperfections following subplatysmal maneuvers; (7) an approach that facilitates an isolated neck lift; and (8) durable results. Case examples demonstrate outcomes. Although the updated approach remains relatively complex and invasive, the author believes that the ends justify the means.

  13. Testosterone replacement, weight lifting help wasting.

    Science.gov (United States)

    1996-06-01

    Many individuals with AIDS will experience HIV wasting syndrome at some time in their disease progression. However, a number of new treatments, including anabolic steroids and a regular regimen of weight lifting, are providing benefits to those who experience this condition. Because wasting is difficult to stop once it has started, preventing or delaying the condition is imperative. Preventive measures include eating well, avoiding infections, and exercising. Treatments and interventions for wasting include nutritional supplements, appetite stimulants, anabolic steroids such as testosterone replacement, human growth hormone therapy, and weight lifting. However, the most effective human growth hormone therapy is probably expensive. Anabolic steroids can be valuable for the 20 percent of HIV-positive males who have below-normal levels of testosterone. Two appetite stimulants approved for use in AIDS patients with weight loss are megestrol acetate (Megace) and dronabinol (Marinol). Weight lifting is a natural way to gain lean body mass and muscle and has been shown to be effective in people who have advanced to a diagnosis of AIDS. Seven tips for fighting weight loss are included.

  14. Dynamic response of Hovercraft lift fans

    Science.gov (United States)

    Moran, D. D.

    1981-08-01

    Hovercraft lift fans are subjected to varying back pressure due to wave action and craft motions when these vehicles are operating in a seaway. The oscillatory back pressure causes the fans to perform dynamically, exhibiting a hysteresis type of response and a corresponding degradation in mean performance. Since Hovercraft motions are influenced by variations in lift fan pressure and discharge, it is important to understand completely the nature of the dynamic performance of lift fans in order to completely solve the Hovercraft seakeeping problem. The present study was performed to determine and classify the instabilities encountered in a centrifugal fan operating against time-varying back pressure. A model-scale experiment was developed in which the fan discharge was directed into a flow-measuring device, terminating in a rotating valve which produced an oscillatory back pressure superimposed upon a mean aerodynamic resistance. Pressure and local velocity were measured as functions of time at several locations in the fan volute. The measurements permitted the identification of rotating (or propagating) stall in the impeller. One cell and two cell configurations were classified and the transient condition connecting these two configurations was observed. The mechanisms which lead to rotating stall in a centrifugal compressor are presented and discussed with specific reference to Hovercraft applications.

  15. LIFT a future atmospheric chemistry sensor

    Science.gov (United States)

    Pailharey, E.; Châteauneuf, F.; Aminou, D.

    2017-11-01

    Natural and anthropogenic trace constituents play an important role for the ozone budget and climate as well as in other problems of the environment. In order to prevent the dramatic impact of any climate change, exchange processes between the stratosphere and troposphere as well as the distribution and deposition of tropospheric trace constituents are investigated. The Limb Infrared Fourier Transform spectrometer (LIFT) will globally provide calibrated spectra of the atmosphere as a function of the tangent altitude. LIFT field of view will be 30 km × 30 km. The resolution is 30 km in azimuth corresponding to the full field of view, and 2 km in elevation, obtained by using a matrix of 15×15 detectors. The instrument will cover the spectral domain 5.7-14.7 μm through 2 different bands respectively 13.0-9.5 μm, 9.5-5.7 μm. With a spectral resolution of 0.1 cm-1, LIFT is a high class Fourier Transform Spectrometer compliant with the challenging constraints of limb viewing and spaceborne implementation.

  16. The effects of obesity on lifting performance.

    Science.gov (United States)

    Xu, Xu; Mirka, Gary A; Hsiang, Simon M

    2008-01-01

    Obesity in the workforce is a growing problem worldwide. While the implications of this trend for biomechanical loading of the musculoskeletal system seem fairly straightforward, the evidence of a clear link between low back pain (LBP) and body mass index (BMI) (calculated as whole body mass in kilograms divided by the square of stature in meters) has not been shown in the epidemiology literature addressing this topic. The approach pursued in the current study was to evaluate the lifting kinematics and ground reaction forces of a group of 12 subjects -- six with a BMI of less than 25 kg/m(2) (normal weight) and six with a BMI of greater than 30 kg/m(2) (obese). These subjects performed a series of free dynamic lifting tasks with varied levels of load (10% and 25% of capacity) and symmetry (sagittally symmetric and 45 degrees asymmetric). The results showed that BMI had a significant effect (pacceleration (57% higher), and exhibiting higher peak sagittal plane velocity (30% higher) and acceleration (51% higher). When normalized to body weight, there were no significant differences in the ground reaction forces between the two groups. This study provides quantitative data describing lifting task performance differences between people of differing BMI levels and may help to explain why there is no conclusive epidemiological evidence of a relationship between BMI and LBP.

  17. Foot-controlled robotic-enabled endoscope holder for endoscopic sinus surgery: A cadaveric feasibility study.

    Science.gov (United States)

    Chan, Jason Y K; Leung, Iris; Navarro-Alarcon, David; Lin, Weiyang; Li, Peng; Lee, Dennis L Y; Liu, Yun-hui; Tong, Michael C F

    2016-03-01

    To evaluate the feasibility of a unique prototype foot-controlled robotic-enabled endoscope holder (FREE) in functional endoscopic sinus surgery. Cadaveric study. Using human cadavers, we investigated the feasibility, advantages, and disadvantages of the robotic endoscope holder in performing endoscopic sinus surgery with two hands in five cadaver heads, mimicking a single nostril three-handed technique. The FREE robot is relatively easy to use. Setup was quick, taking less than 3 minutes from docking the robot at the head of the bed to visualizing the middle meatus. The unit is also relatively small, takes up little space, and currently has four degrees of freedom. The learning curve for using the foot control was short. The use of both hands was not hindered by the presence of the endoscope in the nasal cavity. The tremor filtration also aided in the smooth movement of the endoscope, with minimal collisions. The FREE endoscope holder in an ex-vivo cadaver test corroborated the feasibility of the robotic prototype, which allows for a two-handed approach to surgery equal to a single nostril three-handed technique without the holder that may reduce operating time. Further studies will be needed to evaluate its safety profile and use in other areas of endoscopic surgery. NA. Laryngoscope, 126:566-569, 2016. © 2015 The American Laryngological, Rhinological and Otological Society, Inc.

  18. Role of endoscopic ultrasound and endoscopic resection for the treatment of gastric schwannoma.

    Science.gov (United States)

    Hu, Jinlong; Liu, Xiang; Ge, Nan; Wang, Sheng; Guo, Jintao; Wang, Guoxin; Sun, Siyu

    2017-06-01

    Endoscopic ultrasound (EUS) and endoscopic resection play an important role in gastric submucosal tumor. However, there were few articles regarding EUS and endoscopic resection of gastric schwannomas. Our aim was to evaluate the role of EUS and endoscopic resection in treating gastric schwannomas.We retrospectively reviewed 14 patients between March 2012 and April 2016 with gastric schwannomas and who received EUS and endoscopic resection. EUS characteristics, endoscopic resection, tumor features, and follow-up were evaluated in all the patients.Fourteen patients were enrolled in the present study. The patients' ages ranged from 25 to 72 years (mean age, 52.6 years). On EUS, all tumors were originating from muscularis propria and hypoechoic. Ten tumors have the extraluminal growth patterns and 4 tumors have the intraluminal growth patterns. Marginal halos were observed in 7 lesions. No cystic change and calcification were found inside the lesions. Complete endoscopic resection was performed in all the patients with no complications occurring in any patients. No recurrence or metastases was found in all patients during the follow-up period.Gastric schwannoma has some characteristics on EUS, but it is difficult to differentiate gastric schwannoma from gastrointestinal stromal tumor. Endoscopic resection is an effective and safe treatment for gastric schwannoma with an excellent follow-up outcome.

  19. Study on dynamic lifting characteristics of control rod drive mechanism

    International Nuclear Information System (INIS)

    Shen Xiaoyao

    2012-01-01

    Based on the equations of the electric circuit and the magnetic circuit and analysis of the dynamic lifting process for the control rod drive mechanism (CRDM), coupled magnetic-electric-mechanical equations both for the static status and the dynamic status are derived. The analytical method is utilized to obtain the current and the time when the lift starts. The numerical simulation method of dynamic analysis recommended by ASME Code is utilized to simulate the dynamic lifting process of CRDM, and the dynamic features of the system with different design gaps are studied. Conclusions are drawn as: (1) the lifting-start time increases with the design gap, and the time for the lifting process is longer with larger gaps; (2) the lifting velocity increases with time; (3) the lifting acceleration increases with time, and with smaller gaps, the impact acceleration is larger. (author)

  20. How to lift a box that is too large to fit between the knees

    NARCIS (Netherlands)

    Kingma, I.; Faber, G.S.; van Dieen, J.H.

    2010-01-01

    Many studies compared lifting techniques such as stoop and squat lifting. Results thus far show that when lifting a wide load, high back loads result, irrespective of the lifting technique applied. This study compared four lifting techniques in 11 male subjects lifting wide loads. One of these

  1. Mapping Teacher-Faces

    Science.gov (United States)

    Thompson, Greg; Cook, Ian

    2013-01-01

    This paper uses Deleuze and Guattari's concept of faciality to analyse the teacher's face. According to Deleuze and Guattari, the teacher-face is a special type of face because it is an "overcoded" face produced in specific landscapes. This paper suggests four limit-faces for teacher faciality that actualise different mixes of significance and…

  2. LiftingWiSe: A Lifting-Based Efficient Data Processing Technique in Wireless Sensor Networks

    Directory of Open Access Journals (Sweden)

    Emad Aboelela

    2014-08-01

    Full Text Available Monitoring thousands of objects which are deployed over large-hard-to-reach areas, is an important application of the wireless sensor networks (WSNs. Such an application requires disseminating a large amount of data within the WSN. This data includes, but is not limited to, the object’s location and the environment conditions at that location. WSNs require efficient data processing and dissemination processes due to the limited storage, processing power, and energy available in the WSN nodes. The aim of this paper is to propose a data processing technique that can work under constrained storage, processing, and energy resource conditions. The proposed technique utilizes the lifting procedure in processing the disseminated data. Lifting is usually used in discrete wavelet transform (DWT operations. The proposed technique is referred to as LiftingWiSe, which stands for Lifting-based efficient data processing technique for Wireless Sensor Networks. LiftingWiSe has been tested and compared to other relevant techniques from the literature. The test has been conducted via a simulation of the monitored field and the deployed wireless sensor network nodes. The simulation results have been analyzed and discussed.

  3. [Efficacy and safety of the endoscopic management of Zenker diverticulum with IT-Knife 2 device].

    Science.gov (United States)

    Tenorio, Laura; Palacios, Fernando

    2017-01-01

    To evaluate the efficacy and safety of the endoscopic management of Zenker Diverticulum with IT-Knife 2 device. prospective and multicenter study (Edgardo Rebagliati Martins National Hospital and Golf Clinic). We included all patients with sintomatic Zenker Diverticulum that were treated with endoscopic cricopharyngeal miotomy from september 2013 until august 2016. the diverticulum septum was faced with a cap, and then it was cut by the IT-Knife 2 (ENDOCUT Q, effect 3-2-5) until its baseline. Disphagia score was compared before and 1 and 3 months after the procedure. 20 patients were included (11 men; average age: 71 years). The median size of Zenker Diverticulum was 40.5 mm. The median duration of the cricopharyngeal miotomy was 13.75 minutes. Clinical success was 100%. There was a significative decrease (pdisphagia score from 2+/-0.86 before the procedure to 0.05+/-0.22 one month after it. Recurrence after 3 months was 15% and it was completely solved after a second endoscopic treatment. Niether perforation nor bleeding was reported. Two patients had pneumonia. the endoscopic management of Zenker Diverticulum with IT-Knife 2 is highly effective, safe and less complex than previous technique experience.

  4. Towards automated visual flexible endoscope navigation.

    Science.gov (United States)

    van der Stap, Nanda; van der Heijden, Ferdinand; Broeders, Ivo A M J

    2013-10-01

    The design of flexible endoscopes has not changed significantly in the past 50 years. A trend is observed towards a wider application of flexible endoscopes with an increasing role in complex intraluminal therapeutic procedures. The nonintuitive and nonergonomical steering mechanism now forms a barrier in the extension of flexible endoscope applications. Automating the navigation of endoscopes could be a solution for this problem. This paper summarizes the current state of the art in image-based navigation algorithms. The objectives are to find the most promising navigation system(s) to date and to indicate fields for further research. A systematic literature search was performed using three general search terms in two medical-technological literature databases. Papers were included according to the inclusion criteria. A total of 135 papers were analyzed. Ultimately, 26 were included. Navigation often is based on visual information, which means steering the endoscope using the images that the endoscope produces. Two main techniques are described: lumen centralization and visual odometry. Although the research results are promising, no successful, commercially available automated flexible endoscopy system exists to date. Automated systems that employ conventional flexible endoscopes show the most promising prospects in terms of cost and applicability. To produce such a system, the research focus should lie on finding low-cost mechatronics and technologically robust steering algorithms. Additional functionality and increased efficiency can be obtained through software development. The first priority is to find real-time, robust steering algorithms. These algorithms need to handle bubbles, motion blur, and other image artifacts without disrupting the steering process.

  5. Group Lifting Structures For Multirate Filter Banks, I: Uniqueness Of Lifting Factorizations

    Energy Technology Data Exchange (ETDEWEB)

    Brislawn, Christopher M [Los Alamos National Laboratory

    2008-01-01

    This paper studies two-channel finite impulse response (FIR) perfect reconstruction filter banks. The connection between filter banks and wavelet transforms is well-known and will not be treated here. Figure 1 depicts the polyphase-with-advance representation of a filter bank [6]. A lifting factorization, is a factorization of polyphase matrices into upper and lower triangular lifting matrices. The existence of such decompositions via the Euclidean algorithm was shown for general FIR perfect reconstruction filter banks in [9] and was subsequently refined for linear phase filter banks in [10], [6]. These latter works were motivated by the ISO JPEG 2000 image coding standard [11], [12], [10], which specifies whole-sample symmetric (WS, or FIR type 1 linear phase) filter banks, as in Figure 2(a), in terms of half-sample symmetric (RS, or FIR type 2) lifting filters.

  6. Percutaneous endoscopic gastrostomy in children.

    Science.gov (United States)

    Park, Jye Hae; Rhie, Seonkyeong; Jeong, Su Jin

    2011-01-01

    Percutaneous endoscopic gastrostomy (PEG) can improve nutritional status and reduce the amount of time needed to feed neurologically impaired children. We evaluated the characteristics, complications, and outcomes of neurologically impaired children treated with PEG. We retrospectively reviewed the records of 32 neurologically impaired children who underwent PEG between March 2002 and August 2008 at our medical center. Forty-two PEG procedures comprising 32 PEG insertions and 10 PEG exchanges, were performed. The mean follow-up time was 12.2 (6.6) months. Mean patient age was 9.4 (4.5) years. The main indications for PEG insertion were swallowing difficulty with GI bleeding due to nasogastric tube placement and/or the presence of gastroesophageal reflux disease (GERD). The overall rate of complications was 47%, with early complications evident in 25% of patients and late complications in 22%. The late complications included one gastro-colic fistula, two cases of aggravated GERD, and four instances of wound infection. Among the 15 patients with histological evidence of GERD before PEG, 13 (87%) had less severe GERD, experienced no new aspiration events, and showed increased body weight after PEG treatment. PEG is a safe, effective, and relatively simple technique affording long-term enteral nutritional support in neurologically impaired children. Following PEG treatment, the body weight of most patients increased and the levels of vomiting, GI bleeding, and aspiration fell. We suggest that PEG with post-procedural observation be considered for enteral nutritional support of neurologically impaired children.

  7. Endoscopic treatment of prepatellar bursitis.

    Science.gov (United States)

    Huang, Yu-Chih; Yeh, Wen-Lin

    2011-03-01

    Operative treatment of prepatellar bursitis is indicated in intractable bursitis. The most common complication of surgical treatment for prepatellar bursitis is skin problems. For traumatic prepatellar bursitis, we propose a protocol of outpatient endoscopic surgery under local anaesthesia. From September 1996 to February 2001, 60 cases of failed nonoperative treatment for prepatellar bursitis were included. The average age was 33.5 ± 11.1 years (range 21-55). The average operation duration was 18 minutes. Two to three mini-arthroscopic portals were used in our series. No sutures or a simple suture was needed for the portals after operation. After follow-up for an average of 36.3 months, all patients are were symptom-free and had regained knee function. None of the population had local tenderness or hypo-aesthesia around their wound. Their radiographic and sonographic examinations showed no recurrence of bursitis. Outpatient arthroscopic bursectomy under local anaesthesia is an effective procedure for the treatment of post-traumatic prepatellar bursitis after failed conservative treatments. Both the cosmetic results and functional results were satisfactory.

  8. Training in Endoscopy: Endoscopic Ultrasound.

    Science.gov (United States)

    Cho, Chang Min

    2017-07-01

    Endoscopic ultrasound (EUS) has been recently established as an indispensable modality for the diagnosis and management of pancreatobiliary and gastrointestinal (GI) disorders. EUS proficiency requires both cognitive and technical abilities, including an understanding of the appropriate indications, the performance of appropriate evaluations before and after the procedure, and the management of procedure-related complications. An increasing demand for skills to handle a growing range of interventional EUS procedures and a continual shortage of EUS training programs are two major obstacles for EUS training. Acquiring the skills necessary to comprehend and conduct EUS often requires training beyond the scope of a standard GI fellowship program. In addition to traditional formal EUS training and preceptorships, regular short-term intensive EUS training programs that provide training at various levels may help EUS practitioners improve and maintain EUS-related knowledges and skills. Theoretical knowledge can be acquired from lectures, textbooks, atlases, slides, videotapes, digital video discs, interactive compact discs, and websites. Informal EUS training is generally based on 1- or 2-day intensive seminars, including didactic lectures, skills demonstrated by expert practitioners through live video-streaming of procedures, and hands-on learning using animal or phantom models.

  9. Endoscopic ultrasound-guided drainage of pancreatic pseudocysts

    DEFF Research Database (Denmark)

    Saftoiu, Adrian; Vilmann, Andreas; Vilmann, Peter

    2015-01-01

    Pancreatic pseudocysts are fluid collections in the peripancreatic tissues associated with acute or chronic pancreatitis. Endoscopic ultrasound (EUS)-guided drainage has become an established indication, having better results as compared to percutaneous drainage, nonguided endoscopic drainage...

  10. [Natural Orifice Transluminal Endoscopic Surgery (NOTES)].

    Science.gov (United States)

    Kim, Yong Sik; Kim, Chul Young; Chun, Hoon Jai

    2008-03-01

    Recently, the field of gastrointestinal endoscopy is developing rapidly. Once limited to the gastroinstestinal lumen, the endoscopic technology is now breaking the barriers and extending its boundary to peritoneal and pleural space. In 2004, Dr. Kalloo, a gastroenterologist, observed intraperitoneal organs of a pig using a conventional endoscope through the stomach wall. Since then, new endoscopic technique of intraperitoneal intervention with transluminal approach named the Natural Orifice Transluminal Endoscopic Surgery or NOTES has been introduced. NOTES reaches the target organ by inserting the endoscope through a natural orifice (e.g. mouth, anus, vagina, urethra) and entering the peritoneal lumen by means of making an incision on the luminal wall. After a series of successful experiences in animal studies, NOTES are now being tried on human subjects. There are still many obstacles to overcome, but bright future for this new technology is expected because of its proposed advantages of less pain, lower complication rate, short recovery time, and scarless access. In this review, we plan to learn about NOTES.

  11. Endoscopic techniques in oral and maxillofacial surgery.

    Science.gov (United States)

    Pedroletti, Fred; Johnson, Brad S; McCain, Joseph P

    2010-02-01

    Oral and maxillofacial surgery is entering a new era. Surgeons can use the latest technological advances in equipment in an attempt to improve patient outcomes. Minimally invasive surgery with the use of the endoscope has improved in recent years because of technological advancements in optics and associated instrumentation. Trauma, orthognathic, sialoendoscopy, and temporomandibular joint surgery are commonly performed with the assistance of the endoscope. From an educational standpoint, surgical anatomy and various other principles can easily be taught to trainees with the assistance of the endoscope. The operating surgeon can visualize an area via the endoscope, and instruct regarding the surgical maneuvers on the monitor, without obstructions to view. This technique also allows others in and out of the room to view the image. Endoscopically assisted surgery is gaining popularity and is becoming a tool frequently used by surgeons to assist in and simplify some of the more difficult techniques that often require more extensive surgical exposure for visualization. Copyright (c) 2010 Elsevier Inc. All rights reserved.

  12. Nasal encephalocele: endoscopic excision with anesthetic consideration.

    Science.gov (United States)

    Abdel-Aziz, Mosaad; El-Bosraty, Hussam; Qotb, Mohamed; El-Hamamsy, Mostafa; El-Sonbaty, Mohamed; Abdel-Badie, Hazem; Zynabdeen, Mustapha

    2010-08-01

    Nasal encephalocele may presents as a nasal mass, its treatment is surgical and it should be done early in life. When removal is indicated, there are multiple surgical approaches; including lateral rhinotomy, a transnasal approach and a coronal flap approach. However, the treatment of a basal intranasal encephalocele using transnasal endoscopic approach could obviates the possible morbidity associated with other approaches. The aim of this study was to evaluate the efficacy of endoscopic removal of intranasal encephalocele, also to document the role of anesthetist in the operative and postoperative periods. Nine cases with nasal encephalocele were included in this study; CT and/or MRI were used in their examination. The lesions were removed via transnasal endoscopic approach. Preoperative evaluation, intervention and postoperative follow-up were presented with discussion of anesthesia used for those children. The lesions of all patients were removed successfully with no recurrence through the follow-up period of at least 21 months. No cases showed morbidity or mortality intra- or post-operatively. Endoscopic excision of intranasal encephalocele is an effective method with high success rate. Anesthetist plays an important role in the operative and postoperative period, even during the endoscopic follow up; sedation of the children is usually needed. Copyright (c) 2010 Elsevier Ireland Ltd. All rights reserved.

  13. Novel and safer endoscopic cholecystectomy using only a flexible endoscope via single port.

    Science.gov (United States)

    Mori, Hirohito; Kobayashi, Nobuya; Kobara, Hideki; Nishiyama, Noriko; Fujihara, Shintaro; Chiyo, Taiga; Ayaki, Maki; Nagase, Takashi; Masaki, Tsutomu

    2016-04-07

    To apply the laparoscopic and endoscopic cooperative surgery concept, we investigated whether endoscopic cholecystectomy could be performed more safely and rapidly via only 1 port or not. Two dogs (11 and 13-mo-old female Beagle) were used in this study. Only 1 blunt port was created, and a flexible endoscope with a tip attachment was inserted between the fundus of gallbladder and liver. After local injection of saline to the gallbladder bed, resection of the gallbladder bed from the liver was performed. After complete resection of the gallbladder bed, the gallbladder was pulled up to resect its neck using the Ring-shaped thread technique. The neck of the gallbladder was cut using scissor forceps. Resected gallbladder was retrieved using endoscopic net forceps via a port. The operation times from general anesthetizing with sevoflurane to finishing the closure of the blunt port site were about 50 min and 60 min respectively. The resection times of gallbladder bed were about 15 min and 13 min respectively without liver injury and bleeding at all. Feed were given just after next day of operation, and they had a good appetite. Two dogs are in good health now and no complications for 1 mo after endoscopic cholecystectomy using only a flexible endoscope via one port. We are sure of great feasibility of endoscopic cholecystectomy via single port for human.

  14. Lambda-Lifting in Quadratic Time

    DEFF Research Database (Denmark)

    Danvy, Olivier; Schultz, Ulrik Pagh

    2003-01-01

    Lambda-lifting is a program transformation that is used in compilers, partial evaluators, and program transformers. In this article, we show how to reduce its complexity from cubic time to quadratic time, and we present a flow-sensitive lambda-lifter that also works in quadratic time. Lambda...... on the simple observation that all functions in each component need the same extra parameters and thus a transitive closure is not needed. We therefore simplify the search for extra parameters by treating each strongly connected component instead of each function as a unit, thereby reducing the time complexity...

  15. Bone suture and lateral sinus lift surgery

    Directory of Open Access Journals (Sweden)

    Amin Rahpeyma

    2015-01-01

    Full Text Available Bone suture in lateral sinus lift has four indications. Three of them depend on creating a hole in the lateral maxillary sinus wall above the antrostomy window for securing the elevated medial maxillary sinus membrane to manage perforated Schneiderian membrane. Covering the buccal antrostomy window with the buccal fat pad (BFP for better nourishment of the inserted graft and as an alternative for bone tags in fixation of collagen membrane has been reported previously. A new indication for firmly anchoring the BFP to the medial maxillary sinus wall as the last resort for the management of perforated Schneiderian membrane is explained in this article.

  16. Can low back loading during lifting be reduced by placing one leg beside the object to be lifted?

    Science.gov (United States)

    Kingma, Idsart; Faber, Gert S; Bakker, Anja J M; van Dieën, Jaap H

    2006-08-01

    Lifting technique could, through its effect on low back loading, affect the risk of developing low back pain. In this study, 2 lifting techniques (a straddle technique and a 1-leg kneeling technique), which aimed to reduce low back loading by placing one leg beside a load, were compared with stoop lifting and squat lifting with respect to their effect on low back loading. Twelve men with no history of low back pain participated in the study. The subjects lifted wide and narrow 20-kg boxes from 2 initial hand heights. With measured kinematics, ground reaction forces, and electromyography, 3-dimensional spinal forces were calculated. When the subjects lifted a narrow box from a 290-mm height, peak L5-S1 compression forces were 5,060 (SD = 827), 3,980 (SD = 701), 4,208 (SD = 762), and 4,719 (SD = 1,015) N for the stoop, squat, straddle, and kneeling techniques, respectively. When the subjects lifted a wide box from 50 mm, spinal compression forces were much higher and distributed differently over lifting techniques: 5,926 (SD = 610), 6,868 (SD = 924), 6,472 (SD = 1,042), and 6,064 (SD = 968) N, respectively. The authors conclude that no single lifting technique can be advised for all lifting conditions.

  17. Cost-effectiveness of endoscopic ultrasonography, magnetic resonance cholangiopancreatography and endoscopic retrograde cholangiopancreatography in patients suspected of pancreaticobiliary disease

    DEFF Research Database (Denmark)

    Ainsworth, A P; Rafaelsen, S R; Wamberg, P A

    2004-01-01

    BACKGROUND: It is not known whether initial endoscopic ultrasonography (EUS) or magnetic resonance cholangiopancreatography (MRCP) is more cost effective than endoscopic retrograde cholangiopancreatography (ERCP). METHODS: A cost-effectiveness analysis of EUS, MRCP and ERCP was performed on 163...

  18. Post-endoscopic biliary sphincterotomy bleeding: an interventional radiology approach.

    LENUS (Irish Health Repository)

    Dunne, Ruth

    2013-12-01

    Endoscopic sphincterotomy is an integral component of endoscopic retrograde cholangiopancreatography. Post-sphincterotomy hemorrhage is a recognized complication. First line treatment involves a variety of endoscopic techniques performed at the time of sphincterotomy. If these are not successful, transcatheter arterial embolization or open surgical vessel ligation are therapeutic considerations.

  19. Percutaneous endoscopic gastrostomy in children

    Directory of Open Access Journals (Sweden)

    Jye Hae Park

    2011-01-01

    Full Text Available Purpose: Percutaneous endoscopic gastrostomy (PEG can improve nutritional status and reduce the amount of time needed to feed neurologically impaired children. We evaluated the characteristics, complications, and outcomes of neurologically impaired children treated with PEG. Methods: We retrospectively reviewed the records of 32 neurologically impaired children who underwent PEG between March 2002 and August 2008 at our medical center. Forty-two PEG procedures comprising 32 PEG insertions and 10 PEG exchanges, were performed. The mean follow-up time was 12.2 (6.6 months. Results: Mean patient age was 9.4 (4.5 years. The main indications for PEG insertion were swallowing difficulty with GI bleeding due to nasogastric tube placement and/or the presence of gastroesophageal reflux disease (GERD. The overall rate of complications was 47%, with early complications evident in 25% of patients and late complications in 22%. The late complications included one gastro-colic fistula, two cases of aggravated GERD, and four instances of wound infection. Among the 15 patients with histological evidence of GERD before PEG, 13 (87% had less severe GERD, experienced no new aspiration events, and showed increased body weight after PEG treatment. Conclusion: PEG is a safe, effective, and relatively simple technique affording long-term enteral nutritional support in neurologically impaired children. Following PEG treatment, the body weight of most patients increased and the levels of vomiting, GI bleeding, and aspiration fell. We suggest that PEG with post-procedural observation be considered for enteral nutritional support of neurologically impaired children.

  20. [Per-oral endoscopic myotomy in achalasia].

    Science.gov (United States)

    Ponds, Fraukje A M; Smout, André J P M; Bredenoord, Albert J; Fockens, Paul

    2015-01-01

    The treatment of patients with achalasia is complex due to a considerably high recurrence rate and risk of treatment-related complications. The per-oral endoscopic myotomy (POEM) is a new endoscopic technique that combines the benefits of a minimally invasive endoscopic procedure with the efficacy of a surgical myotomy. Implementation of the POEM technique may lead to fewer complications, a lower recurrence rate and reduced costs. During the procedure, a myotomy of the circular muscle layer of the oesophagus is performed after creating a submucosal tunnel in the oesophagus. The first studies of this new technique show promising results. Experienced therapeutic endoscopists can learn to perform the POEM technique relatively easily. Further studies are needed to compare this technique with the current standard treatments and to evaluate long-term effects.

  1. [Endoscopic classification of colon and rectal neoplasias].

    Science.gov (United States)

    Zavoral, Miroslav; Vojtěchová, Gabriela; Suchánek, Stěpán

    2014-01-01

    Along with the dynamic evolution of the new field of digestive endoscopy, the need of unified and unambiguous terms for endoscopic findings arose in the second half of the 20th century. In collaboration with the OMED members, professor Zdeněk Mařatka drew up the first internationally acknowledged terminology for digestive endoscopy which was used in the full range for a period of almost 20 years. The technical progress later brought with it endoscopes which made it possible to view flat lesions, frequently overlooked until then. The classification of the surface lesions was further specified by the Paris Classification which drew from the experience of Japanese endoscopists. Thanks to the new endoscopic methods of imaging mucosa in vivo and the pit-pattern and vascular-pattern classification, we can currently estimate the biological nature of lesion with great accuracy and therefore choose the best therapeutic procedure.

  2. Diagnosis and treatment with endoscopic retrograde cholangiopancreatography

    International Nuclear Information System (INIS)

    Soendenaa, K.; Horn, A.; Viste, A.

    1994-01-01

    Endoscopic retrograde cholangiopancreatography (ERCP) was carried out for the first time in 1968. Five years later endoscopic sphincterotomy was performed. Since then both modalities have become established as necessary adjuncts in the diagnosis and treatment of patients with pathology in the bile duct or pancreas. The main indication is common bile duct stone, and as a consequence of this treatment fewer patients are now treated surgically. Patients with malignant bile duct obstruction can be given reasonable palliation of both jaundice and pruritus and therefore improved quality of life. Some reports indicate that endoscopic drainage may be useful for pancreatic stenosis. Complications are few, but vigilance and prompt treatment is necessary to keep morbidity at a minimum. Follow-up after several years shows that sphincterotomy is successful also in the long term. The authors discuss the present diagnostic and therapeutic situation. 31 refs., 2 tabs

  3. Endoscopic and Photodynamic Therapy of Cholangiocarcinoma.

    Science.gov (United States)

    Meier, Benjamin; Caca, Karel

    2016-12-01

    Most patients with cholangiocarcinoma (CCA) have unresectable disease. Endoscopic bile duct drainage is one of the major objectives of palliation of obstructive jaundice. Stent implantation using endoscopic retrograde cholangiography is considered to be the standard technique. Unilateral versus bilateral stenting is associated with different advantages and disadvantages; however, a standard approach is still not defined. As there are various kinds of stents, there is an ongoing discussion on which stent to use in which situation. Palliation of obstructive jaundice can be augmented through the use of photodynamic therapy (PDT). Studies have shown a prolonged survival for the combinations of PDT and different stent applications as well as combinations of PDT and additional systemic chemotherapy. More well-designed studies are needed to better evaluate and standardize endoscopic treatment of unresectable CCA.

  4. Back injury prevention: a lift team success story.

    Science.gov (United States)

    Hefti, Kelly S; Farnham, Richard J; Docken, Lisa; Bentaas, Ruth; Bossman, Sharon; Schaefer, Jill

    2003-06-01

    Work related back injuries among hospital personnel account for high volume, high cost workers' compensation claims. These injuries can be life altering experiences, affecting both the personal and professional lives of injured workers. Lifting must be viewed as a skill involving specialized training and mandated use of mechanical equipment, rather than as a random task performed by numerous health care providers. The use of a lift team specially trained in body mechanics, lifting techniques, and the use of mandated mechanical equipment can significantly affect injury data, financial outcomes, and employee satisfaction. The benefits of a lift team extend beyond the effect on injury and financial outcomes--they can be used for recruitment and retention strategies, and team members serve as mentors to others by demonstrating safe lifting techniques. Ultimately, a lift team helps protect a valuable resource--the health care worker.

  5. Gasless laparoscopic surgery plus abdominal wall lifting for giant hiatal hernia-our single-center experience.

    Science.gov (United States)

    Yu, Jiang-Hong; Wu, Ji-Xiang; Yu, Lei; Li, Jian-Ye

    2016-12-01

    Giant hiatal hernia (GHH) comprises 5% of hiatal hernia and is associated with significant complications. The traditional operative procedure, no matter transthoracic or transabdomen repair of giant hiatal hernia, is characteristic of more invasion and more complications. Although laparoscopic repair as a minimally invasive surgery is accepted, a part of patients can not tolerate pneumoperitoneum because of combination with cardiopulmonary diseases or severe posterior mediastinal and neck emphesema during operation. The aim of this article was to analyze our experience in gasless laparoscopic repair with abdominal wall lifting to treat the giant hiatal hernia. We performed a retrospective review of patients undergoing gasless laparoscopic repair of GHH with abdominal wall lifting from 2012 to 2015 at our institution. The GHH was defined as greater than one-third of the stomach in the chest. Gasless laparoscopic repair of GHH with abdominal wall lifting was attempted in 27 patients. Mean age was 67 years. The results showed that there were no conversions to open surgery and no intraoperative deaths. The mean duration of operation was 100 min (range: 90-130 min). One-side pleura was injured in 4 cases (14.8%). The mean postoperative length of stay was 4 days (range: 3-7 days). Median follow- up was 26 months (range: 6-38 months). Transient dysphagia for solid food occurred in three patients (11.1%), and this symptom disappeared within three months. There was one patient with recurrent hiatal hernia who was reoperated on. Two patients still complained of heartburn three months after surgery. Neither reoperation nor endoscopic treatment due to signs of postoperative esophageal stenosis was required in any patient. Totally, satisfactory outcome was reported in 88.9% patients. It was concluded that the gasless laparoscopic approach with abdominal wall lifting to the repair of GHH is feasible, safe, and effective for the patients who cannot tolerate the pneumoperitoneum.

  6. Linnainstallatsioonide festival "Lift 11" = Urban installations festival Lift 11 / Margit Aule, Margit Argus ; intervjueerinud Margit Mutso

    Index Scriptorium Estoniae

    Aule, Margit, 1981-

    2012-01-01

    Linnainstallatsioonide festivalist "Lift 11", installatsioonidest. Festivali kuraatorid Margit Argus ja Margit Aule ning kaaskuraatorid Maarin Ektermann ja Ingrid Ruudi pälvisid EK arhitektuuri sihtkapitali 2011. a. arhitektuurialase tegevuse preemia avaliku linnaruumi mitmekesisust märkama, kasutama ning mõtestama ärgitanud ürituse korraldamise eest

  7. A Panoramic Wireless Endoscope System Design for the Application of Minimally Invasive Surgery

    Directory of Open Access Journals (Sweden)

    Chun-Hsiang Peng

    2014-05-01

    Full Text Available Minimally Invasive Surgery (MIS is the current trend in surgery. Compared to traditional surgery, MIS can substantially decrease recovery time and expenses needed by patients after surgeries, reduce pain during surgical procedures, and is highly regarded by physicians and patients. An endoscope is widely used in the diagnosis and treatments of various medical disciplines, such as hysteroscopy, laparoscopy, and colonoscopy, and have been adopted by many branches of medicine. However, the limited image field of MIS is often the most difficult obstacles faced by surgeons and medical students, especially to less experienced physicians and difficult surgical procedures; the limited field of view of endoscopic imaging does not provide a whole picture of the surgery area, making the procedures difficult and full of uncertainty. In light of this problem, we proposed a "Panoramic Wireless Endoscope System design", hoping to provide physicians with a wide field of view of the endoscopic image. We combine images captured from two parallel-mounted endoscope lenses into a single, wide-angle image, giving physicians a wider field of view and easier access to the surgical area. In addition, we developed a wireless transmission system so the image can be transmitted to various display platforms, eliminating the needs for excessive cabling on surgical tools and enable physicians to better operate on the patient. Finally, our system allows surgical assistants a better view of the operation process, and enables other physicians and nurses to remotely observe the process. Our experiment results have shown that we can increase the image to 152% of its original size. We used the PandaBoard ES platform with an ARM9 processor and 1G of onboard RAM, and continuously implementing animal trials to verify the reliability of our system.

  8. Predictive equations to estimate spinal loads in symmetric lifting tasks.

    Science.gov (United States)

    Arjmand, N; Plamondon, A; Shirazi-Adl, A; Larivière, C; Parnianpour, M

    2011-01-04

    Response surface methodology is used to establish robust and user-friendly predictive equations that relate responses of a complex detailed trunk finite element biomechanical model to its input variables during sagittal symmetric static lifting activities. Four input variables (thorax flexion angle, lumbar/pelvis ratio, load magnitude, and load position) and four model responses (L4-L5 and L5-S1 disc compression and anterior-posterior shear forces) are considered. Full factorial design of experiments accounting for all combinations of input levels is employed. Quadratic predictive equations for the spinal loads at the L4-S1 disc mid-heights are obtained by regression analysis with adequate goodness-of-fit (R(2)>98%, pvariable levels that yield spine loads beyond the tolerance compression limit of 3400 N are identified using contour plots. Ergonomists and bioengineers, faced with the dilemma of using either complex but more accurate models on one hand or less accurate but simple models on the other hand, have thereby easy-to-use predictive equations that quantifies spinal loads and risk of injury under different occupational tasks of interest. Copyright © 2010 Elsevier Ltd. All rights reserved.

  9. Endoscopic management of glabellar frown lines.

    Science.gov (United States)

    Hamas, R S

    1995-10-01

    Resection of the corrugator muscles has been done for years as a routine adjunct to open coronal browlifts. The new endoscopic procedure described here permits endoscopic resection of the corrugator muscles through three 5-mm hairline incisions in those patients who do not need or want a browlift. The primary benefit is that of reducing the subconscious tendency to frown that some patients exhibit whenever concentrating or conversing. Although patients typically seek plastic surgery procedures to improve how they see themselves, these patients seek a reduction in the subconscious frown to improve how others see them and react to this unattractive facial expression.

  10. ENDOSCOPIC TECHNOLOGIES IN EARLY RECTAL CANCER TREATMENT

    Directory of Open Access Journals (Sweden)

    D. V. Samsonov

    2015-01-01

    Full Text Available Total mesorectal excision is the “golden standard” of surgical treatment for rectal cancer. Development of endoscopic technologies allowed to implement the benefits of minimally invasive surgery in early rectal cancer treatment, decrease morbidity and mortality, improve functional outcome and quality of life. Oncological safety of this method is still a subject for discussion due to lack of lymph node harvest. Endoscopic operations for early rectal cancer are being actively implemented in daily practice, but lack of experience does not allow to include this method in national clinical prac-tice guidelines.

  11. AMS gets lift on space shuttle Discovery

    CERN Multimedia

    2009-01-01

    AMS-02, the CERN-recognized experiment that will seek dark matter, missing matter and antimatter in Space aboard the International Space Station (ISS), has recently got the green light to be part of the STS-134 NASA mission in 2010. Installation of AMS detectors in the Prévessin experiment hall.In a recent press release, NASA announced that the last or last-but-one mission of the Space Shuttle programme would be the one that will deliver AMS, the Alpha Magnetic Spectrometer, to the International Space Station. The Space Shuttle Discovery is due to lift off in July 2010 from Kennedy Space Center and its mission will include the installation of AMS to the exterior of the space station, using both the shuttle and station arms. "It wasn’t easy to get a lift on the Space Shuttle from the Bush administration," says professor Samuel Ting, spokesperson of the experiment, "since during his administration all the funds for space research w...

  12. Lifting wavelet method of target detection

    Science.gov (United States)

    Han, Jun; Zhang, Chi; Jiang, Xu; Wang, Fang; Zhang, Jin

    2009-11-01

    Image target recognition plays a very important role in the areas of scientific exploration, aeronautics and space-to-ground observation, photography and topographic mapping. Complex environment of the image noise, fuzzy, all kinds of interference has always been to affect the stability of recognition algorithm. In this paper, the existence of target detection in real-time, accuracy problems, as well as anti-interference ability, using lifting wavelet image target detection methods. First of all, the use of histogram equalization, the goal difference method to obtain the region, on the basis of adaptive threshold and mathematical morphology operations to deal with the elimination of the background error. Secondly, the use of multi-channel wavelet filter wavelet transform of the original image de-noising and enhancement, to overcome the general algorithm of the noise caused by the sensitive issue of reducing the rate of miscarriage of justice will be the multi-resolution characteristics of wavelet and promotion of the framework can be designed directly in the benefits of space-time region used in target detection, feature extraction of targets. The experimental results show that the design of lifting wavelet has solved the movement of the target due to the complexity of the context of the difficulties caused by testing, which can effectively suppress noise, and improve the efficiency and speed of detection.

  13. Wellhead monitors automate Lake Maracaibo gas lift

    Energy Technology Data Exchange (ETDEWEB)

    Adjunta, J.C. (Maraven S.A., Lagunillas (Venezuela)); Majek, A. (Texas Electronic Resources, Houston, TX (United States))

    1994-11-28

    High-performance personal computer (PC) and intelligent remote terminal unit (IRTU) technology have optimized the remote control of gas lift injection and surveillance of over 1,000 offshore production wells at Lake Maracaibo in Venezuela. In its 3-year program, Maraven expects a 27,000 b/d increase in oil production by reducing deferred production and optimizing gas lift injection by as much as 20%. In addition, real time data on well performance will enhance production management as well as allocation of operational and maintenance resources. The remote control system consists of a solar-powered wellhead monitor (WHM) installed on each well platform. At each flow gathering station within a 2-mile range of a family of wells, a host terminal unit polls and stores the well data with low power, 250-mw radios. From a remote location, 60 miles onshore, an operator interface polls the host units for real time data with 5-watt radios operating in the 900-megahertz band. The paper describes the design, optimization, telemetry management, and selection of a single vendor for this system. The economic impact of this system to Maraven is also discussed.

  14. Age and gender normative data for lift capacity.

    Science.gov (United States)

    Matheson, Leonard N; Verna, Joe; Dreisinger, Thomas E; Leggett, Scott; Mayer, John

    2014-01-01

    Functional Capacity Evaluations (FCEs) are routinely used in physical medicine to ascertain an individual's work ability; with lift capacity being an important aspect of many evaluations. Despite the widespread use of lift capacity tests, there are few studies that provide age and gender normative data. To evaluate the safety, reliability, and validity of the EPIC Lift Capacity test, and to examine the effects of age and gender on lift capacity. This study used a test-retest design with 4,443 adult participants in good general health. Test-retest of participants' lift capacity was undertaken to examine safety and reliability. Age and gender and the self-reported physical demands of each employed participant's usual and customary job were collected to examine validity. Safety and reliability were demonstrated for both measures of lift capacity for each of the six sub-tests in the EPIC Lift Capacity test battery. Inter-subtest differences and expected age and gender differences were found across all subtests. The EPIC Lift Capacity test is a safe and reliable test of lift capacity.Normative data are presented that allow comparison within age and gender categories.

  15. Occupational lifting by nursing aides and warehouse workers.

    Science.gov (United States)

    Ljungberg, A S; Kilbom, A; Hägg, G M

    1989-01-01

    Nursing aides (18 women and six men) at one traditional and one modern geriatric ward, and warehouse workers (16 men) at two different types of warehouse departments were studied during occupational work. The vertical load during manual handling was measured using strain gauges built into wooden shoes. The warehouse workers performed four times as many lifts as the nursing aides and transferred five times as great a mass per unit time. Less than 25% of the lifts were carried out with the load evenly distributed on both feet during both the upward lift and lowering. In the warehouses the lifts were short, while the nursing aides were exposed both to lifts of longer duration and to carrying, as well as a greater frequency of unexpected, sudden and high peak load. The heart rate and oxygen uptake values recorded were relatively low, and both groups utilized approximately 25% of their maximum aerobic power. According to official occupational injury statistics, both warehouse workers and nursing aides belong to risk groups with a high frequency of reported back injuries. However, more injuries are reported by nursing aides than by warehouse workers. Greater muscle strength in male workers may partly explain this difference. Qualitative differences in the design of the lifting work, with more lifts of long duration in awkward work postures, more carrying, more exertion of horizontal forces and a greater frequency of unexpected rapid lifts in the nursing aides may also contribute to the differences in risk of injury between these occupational groups. Considerable differences were found between the two hospital wards as regards lifting frequency, force, duration and the proportion of lifts with an even distribution of load on both feet during upward lift. The lifting work was approximately 50% less in the modern ward, which has easily maneuvered electric overhead hoists, spacious premises and better work organization than in the traditional ward, even though the patient

  16. ALARA review for the deactivation of 105-N Lift Station

    International Nuclear Information System (INIS)

    Nellesen, A.L.

    1997-01-01

    This ALARA review provides a description of the engineering and administrative controls used to manage personnel exposure and to control contamination levels and airborne radioactivity concentrations, while removing water, sludge, stabilizing surfaces, and all other associated work involved in the deactivation of the 105-N Lift Station. The lift station was used as a sump and received contaminated water from the 105-N Fuel Storage Basin weirs and contaminated drains in the 105-N Building. During operation water from the lift station was pumped to the 1310-N and 1325-N cribs. Deactivation of the lift station is a critical step in completing the deactivation of N-Area

  17. Experiences with optimizing airfoil shapes for maximum lift over drag

    Science.gov (United States)

    Doria, Michael L.

    1991-01-01

    The goal was to find airfoil shapes which maximize the ratio of lift over drag for given flow conditions. For a fixed Mach number, Reynolds number, and angle of attack, the lift and drag depend only on the airfoil shape. This then becomes a problem in optimization: find the shape which leads to a maximum value of lift over drag. The optimization was carried out using a self contained computer code for finding the minimum of a function subject to constraints. To find the lift and drag for each airfoil shape, a flow solution has to be obtained. This was done using a two dimensional Navier-Stokes code.

  18. Familiar face + novel face = familiar face? Representational bias in the perception of morphed faces in chimpanzees

    Directory of Open Access Journals (Sweden)

    Yoshi-Taka Matsuda

    2016-08-01

    Full Text Available Highly social animals possess a well-developed ability to distinguish the faces of familiar from novel conspecifics to induce distinct behaviors for maintaining society. However, the behaviors of animals when they encounter ambiguous faces of familiar yet novel conspecifics, e.g., strangers with faces resembling known individuals, have not been well characterised. Using a morphing technique and preferential-looking paradigm, we address this question via the chimpanzee’s facial–recognition abilities. We presented eight subjects with three types of stimuli: (1 familiar faces, (2 novel faces and (3 intermediate morphed faces that were 50% familiar and 50% novel faces of conspecifics. We found that chimpanzees spent more time looking at novel faces and scanned novel faces more extensively than familiar or intermediate faces. Interestingly, chimpanzees looked at intermediate faces in a manner similar to familiar faces with regards to the fixation duration, fixation count, and saccade length for facial scanning, even though the participant was encountering the intermediate faces for the first time. We excluded the possibility that subjects merely detected and avoided traces of morphing in the intermediate faces. These findings suggest a bias for a feeling-of-familiarity that chimpanzees perceive familiarity with an intermediate face by detecting traces of a known individual, as 50% alternation is sufficient to perceive familiarity.

  19. Per-oral endoscopic myotomy: major advance in achalasia treatment and in endoscopic surgery.

    Science.gov (United States)

    Friedel, David; Modayil, Rani; Stavropoulos, Stavros N

    2014-12-21

    Per-oral endoscopic myotomy (POEM) represents a natural orifice endoscopic surgery (NOTES) approach to laparoscopy Heller myotomy (LHM). POEM is arguably the most successful clinical application of NOTES. The growth of POEM from a single center in 2008 to approximately 60 centers worldwide in 2014 with several thousand procedures having been performed attests to the success of POEM. Initial efficacy, safety and acid reflux data suggest at least equivalence of POEM to LHM, the previous gold standard for achalasia therapy. Adjunctive techniques used in the West include impedance planimetry for real-time intraprocedural luminal assessment and endoscopic suturing for challenging mucosal defect closures during POEM. The impact of POEM extends beyond the realm of esophageal motility disorders as it is rapidly popularizing endoscopic submucosal dissection in the West and spawning offshoots that use the submucosal tunnel technique for a host of new indications ranging from resection of tumors to pyloromyotomy for gastroparesis.

  20. Are endoscopic findings predictive for the presence of H. pylori infection? What about indirect histologic findings?

    Directory of Open Access Journals (Sweden)

    Mohammad Hasan Emami

    2007-06-01

    Full Text Available face="TimesNewRoman,Bold" size="1">

    BACKGROUND: face="TimesNewRoman" size="2">It is still controversial whether certain endoscopic features can be used to diagnose Helicobacter pylori related gastritis. Our aim was to determine how macroscopic findings were related to histomorphological changes and the presence of H. pylori in patients undergoing endoscopy.

    face="TimesNewRoman,Bold" size="1">

    METHODS: face="TimesNewRoman" size="2">The study population involved 501 consecutive gastrointestinal (GI clinic admissions who underwent esphagogastroduodenoscopy for upper GI symptoms between October 2002 and March 2004. At least 2 antral and 2 body biopsies were obtained from each patient and were examined histologically for the presence of gastritis and were stained for H. pylori using modified Giemsa staining method. Endoscopic findings were reviewed retrospectively by two experts blinded to the H. pylori status and patients history. The endoscopic findings of gastritis, classified by a modification of the Sydney system and histological findings were determined by updated Sydney system. Statistical analysis was done using SPSS 11.

    face="TimesNewRoman,Bold" size="1">

    RESULTS: face="TimesNewRoman" size="2">A total of 501 consecutive patients (256 females, 245males ranging from 8 to 91 years (mean, 49.5 years were studied. H. pylori was found in 326 patients (65.1%. Relative frequency of H pylori in females was 53% and in males was 47%. Rugal hypertrophy, raised erosion and bleeding were observed only in patients with H. pylori infection (specificity = 100%. Neutrophil activity also was observed only in patients with H. pylori infection. Among endoscopic findings, erythema showed a high sensitivity (81.3% and positive predictive value (87.1% for the diagnosis of H. pylori infection. Gastritis

  1. Comparison of Endoscopic Variceal Ligation and Endoscopic Variceal Obliteration in Patients with GOV1 Bleeding

    OpenAIRE

    Hong, Hyoung Ju; Jun, Chung Hwan; Lee, Du Hyeon; Cho, Eun Ae; Park, Seon Young; Cho, Sung Bum; Park, Chang Hwan; Joo, Young Eun; Kim, HyunSoo; Choi, Sung Kyu; Rew, Jong Sun

    2013-01-01

    The aim of this study was to compare the efficacy, rebleeding rates, survival, and complications of endoscopic variceal ligation (EVL) with those of endoscopic variceal obliteration (EVO) in patients with acute type 1 gastroesophageal variceal (GOV1) bleeding. Data were collected retrospectively at a single center. A total of 84 patients were selected (20 patients underwent EVL; 64 patients underwent EVO) from February 2004 to September 2011. Their clinical characteristics, laboratory results...

  2. Endoscopic Management of an Intramural Sinus Leak After Per- Oral Endoscopic Myotomy

    OpenAIRE

    Al Taii, Haider; Confer, Bradley; Gabbard, Scott; Kroh, Matthew; Jang, Sunguk; Rodriguez, John; Parsi, Mansour A.; Vargo, John J.; Ponsky, Jeffrey; Bhatt, Amit

    2016-01-01

    Per-oral endoscopic myotomy (POEM) was developed less than a decade ago for the treatment of achalasia. Its minimally invasive approach and the favorable short-term outcome have led to rapid adoption of the technique throughout the world. As with any new technique, there will be adverse events, and it is important that effective treatments for these adverse events be discussed. We present a case of successful endoscopic management of an intramural sinus leak after a POEM procedure using tande...

  3. Systematic Review of Endoscopic Middle Ear Surgery Outcomes

    Science.gov (United States)

    Kozin, Elliott D.; Gulati, Shawn; Lehmann, Ashton; Remenschneider, Aaron K.; Kaplan, Alyson; Landegger, Lukas D.; Cohen, Michael S.; Lee, Daniel J.

    2015-01-01

    Objective Middle ear surgery increasingly employs endoscopes as an adjunct to or replacement for the operative microscope. Superior visualization and transcanal access to disease normally managed with a transmastoid approach are touted as advantages with the endoscope. No study, however, has systemically reviewed the literature to evaluate outcomes of endoscopic ear surgery (EES). We provide a systematic review of endoscope applications in middle ear surgery with an emphasis on outcomes. Data Sources PubMed, Embase, and Cochrane Methods A literature review was performed using the Preferred Reporting Items for Systematic Reviews and Meta-Analysis recommendations. Articles were categorized based on study design, indication, and use of an endoscope either as an adjunct to or as a replacement for a microscope. Quantitative and descriptive analyses were performed. Results Ninety-one articles published between 1967 and 2014 met inclusion and exclusion criteria. The main indication for the use of an endoscope was cholesteatoma or myringoplasty. Of the identified articles, 40 provided a discrete discussion of outcomes. In cholesteatoma surgery, the endoscope has been mainly employed as an adjunct to the microscope, and although outcomes assessments vary across studies, the endoscope identified residual cholesteatoma in up to 50% of cases. Conclusion Endoscopes have been predominately used as an observational adjunct to the microscope to improve visualization of the tympanic cavity. Recent reports utilize the endoscope exclusively during surgical dissection; however, data comparing patient outcomes following the use of an operative endoscope versus a microscope are lacking. Areas in need of additional research are highlighted. PMID:25418475

  4. Sensorimotor memory biases weight perception during object lifting

    Directory of Open Access Journals (Sweden)

    Vonne evan Polanen

    2015-12-01

    Full Text Available When lifting an object, the brain uses visual cues and an internal object representation to predict its weight and scale fingertip forces accordingly. Once available, tactile information is rapidly integrated to update the weight prediction and refine the internal object representation. If visual cues cannot be used to predict weight, force planning relies on implicit knowledge acquired from recent lifting experience, termed sensorimotor memory. Here, we investigated whether perception of weight is similarly biased according to previous lifting experience and how this is related to force scaling. Participants grasped and lifted series of light or heavy objects in a semi-randomized order and estimated their weights. As expected, we found that forces were scaled based on previous lifts (sensorimotor memory and these effects increased depending on the length of recent lifting experience. Importantly, perceptual weight estimates were also influenced by the preceding lift, resulting in lower estimations after a heavy lift compared to a light one. In addition, the weight estimations were negatively correlated with the magnitude of planned force parameters. This perceptual bias was only found if the current lift was light, but not heavy since the magnitude of sensorimotor memory effects had, according to Weber’s law, relatively less impact on heavy compared to light objects. A control experiment tested the importance of active lifting in mediating these perceptual changes and showed that when weights are passively applied on the hand, no effect of previous sensory experience is found on perception. These results highlight how fast learning of novel object lifting dynamics can shape weight perception and demonstrate a tight link between action planning and perception control. If predictive force scaling and actual object weight do not match, the online motor corrections, rapidly implemented to downscale forces, will also downscale weight estimation in

  5. AFC-Enabled Simplified High-Lift System Integration Study

    Science.gov (United States)

    Hartwich, Peter M.; Dickey, Eric D.; Sclafani, Anthony J.; Camacho, Peter; Gonzales, Antonio B.; Lawson, Edward L.; Mairs, Ron Y.; Shmilovich, Arvin

    2014-01-01

    The primary objective of this trade study report is to explore the potential of using Active Flow Control (AFC) for achieving lighter and mechanically simpler high-lift systems for transonic commercial transport aircraft. This assessment was conducted in four steps. First, based on the Common Research Model (CRM) outer mold line (OML) definition, two high-lift concepts were developed. One concept, representative of current production-type commercial transonic transports, features leading edge slats and slotted trailing edge flaps with Fowler motion. The other CRM-based design relies on drooped leading edges and simply hinged trailing edge flaps for high-lift generation. The relative high-lift performance of these two high-lift CRM variants is established using Computational Fluid Dynamics (CFD) solutions to the Reynolds-Averaged Navier-Stokes (RANS) equations for steady flow. These CFD assessments identify the high-lift performance that needs to be recovered through AFC to have the CRM variant with the lighter and mechanically simpler high-lift system match the performance of the conventional high-lift system. Conceptual design integration studies for the AFC-enhanced high-lift systems were conducted with a NASA Environmentally Responsible Aircraft (ERA) reference configuration, the so-called ERA-0003 concept. These design trades identify AFC performance targets that need to be met to produce economically feasible ERA-0003-like concepts with lighter and mechanically simpler high-lift designs that match the performance of conventional high-lift systems. Finally, technical challenges are identified associated with the application of AFC-enabled highlift systems to modern transonic commercial transports for future technology maturation efforts.

  6. Evaluation of endoscopic entire 3D image acquisition of the digestive tract using a stereo endoscope

    Science.gov (United States)

    Yoshimoto, Kayo; Watabe, Kenji; Fujinaga, Tetsuji; Iijima, Hideki; Tsujii, Masahiko; Takahashi, Hideya; Takehara, Tetsuo; Yamada, Kenji

    2017-02-01

    Because the view angle of the endoscope is narrow, it is difficult to get the whole image of the digestive tract at once. If there are more than two lesions in the digestive tract, it is hard to understand the 3D positional relationship among the lesions. Virtual endoscopy using CT is a present standard method to get the whole view of the digestive tract. Because the virtual endoscopy is designed to detect the irregularity of the surface, it cannot detect lesions that lack irregularity including early cancer. In this study, we propose a method of endoscopic entire 3D image acquisition of the digestive tract using a stereo endoscope. The method is as follows: 1) capture sequential images of the digestive tract by moving the endoscope, 2) reconstruct 3D surface pattern for each frame by stereo images, 3) estimate the position of the endoscope by image analysis, 4) reconstitute the entire image of the digestive tract by combining the 3D surface pattern. To confirm the validity of this method, we experimented with a straight tube inside of which circles were allocated at equal distance of 20 mm. We captured sequential images and the reconstituted image of the tube revealed that the distance between each circle was 20.2 +/- 0.3 mm (n=7). The results suggest that this method of endoscopic entire 3D image acquisition may help us understand 3D positional relationship among the lesions such as early esophageal cancer that cannot be detected by virtual endoscopy using CT.

  7. Preventing hairline elevation in endoscopic browlifts.

    Science.gov (United States)

    Hamas, R S; Rohrich, R J

    1997-04-01

    An endoscopic-assisted method of brow elevation using galea aponeurosis plication with direct suture fixation is presented. This technique does not elevate the hairline, nor is any skin or scalp resected. Dissection is easy because it is limited to the subgaleal plane of the forehead.

  8. Upper gastrointestinal endoscopic findings and prevalence of ...

    African Journals Online (AJOL)

    Upper gastrointestinal endoscopic findings and prevalence of Helicobacter pylori infection among adult patients with dyspepsia in northern Tanzania. ... Endoscopy (EGD) for initial work up. Study on antimicrobial susceptibility pattern of H. pylori is recommended to guide choices for evidence based treatment option.

  9. Oesophageal cancer and experience with endoscopic stent ...

    African Journals Online (AJOL)

    Background: Oesophageal cancer often presents in advanced stages not amenable to surgical resection. In such patients, palliation of dysphagia remains the mainstay of management. oBjectives: To determine the burden of advanced oesophageal cancer and to document the experience with endoscopic metal stent.

  10. Early endoscopic realignment in posterior urethral injuries.

    Science.gov (United States)

    Shrestha, B; Baidya, J L

    2013-01-01

    Posterior urethral injury requires meticulous tertiary care and optimum expertise to manage successfully. The aim of our study is to describe our experiences with pelvic injuries involving posterior urethra and their outcome after early endoscopic realignment. A prospective study was carried out in 20 patients with complete posterior urethral rupture, from November 2007 till October 2010. They presented with blunt traumatic pelvic fracture and underwent primary realignment of posterior urethra in our institute. The definitive diagnosis of urethral rupture was made after retrograde urethrography and antegrade urethrography where applicable. The initial management was suprapubic catheter insertion after primary trauma management in casualty. After a week of conservative management with intravenous antibiotics and pain management, patients were subjected to the endoscopic realignment. The follow up period was at least six months. The results were analyzed with SPSS software. After endoscopic realignment, all patients were advised CISC for the initial 3 months. All patients voided well after three months of CISC. However, 12 patients were lost to follow up by the end of 6 postoperative months. Out of eight remaining patients, two had features of restricture and were managed with DVU followed by CISC again. One patient with restricture had some degree of erectile dysfunction who improved significantly after phospodiesterase inhibitors. None of the patients had features of incontinence. Early endoscopic realignment of posterior urethra is a minimally invasive modality in the management of complete posterior urethral injury with low rates of incontinence and impotency.

  11. Update on the endoscopic treatments for achalasia.

    Science.gov (United States)

    Uppal, Dushant S; Wang, Andrew Y

    2016-10-21

    Achalasia is the most common primary motility disorder of the esophagus and presents as dysphagia to solids and liquids. It is characterized by impaired deglutitive relaxation of the lower esophageal sphincter. High-resolution manometry allows for definitive diagnosis and classification of achalasia, with type II being the most responsive to therapy. Since no cure for achalasia exists, early diagnosis and treatment of the disease is critical to prevent end-stage disease. The central tenant of diagnosis is to first rule out mechanical obstruction due to stricture or malignancy, which is often accomplished by endoscopic and fluoroscopic examination. Therapeutic options include pneumatic dilation (PD), surgical myotomy, and endoscopic injection of botulinum toxin injection. Heller myotomy and PD are more efficacious than pharmacologic therapies and should be considered first-line treatment options. Per oral endoscopic myotomy (POEM) is a minimally-invasive endoscopic therapy that might be as effective as surgical myotomy when performed by a trained and experienced endoscopist, although long-term data are lacking. Overall, therapy should be individualized to each patient's clinical situation and based upon his or her risk tolerance, operative candidacy, and life expectancy. In instances of therapeutic failure or symptom recurrence re-treatment is possible and can include PD or POEM of the wall opposite the site of prior myotomy. Patients undergoing therapy for achalasia require counseling, as the goal of therapy is to improve swallowing and prevent late manifestations of the disease rather than to restore normal swallowing, which is unfortunately impossible.

  12. Liver parenchumography following endoscopic retrograde cholangiopancreatography (ERCP)

    International Nuclear Information System (INIS)

    Revert, A.; Arana, E.; Pertejo, V.; Berenguer, M.; Masip, M.J.

    1998-01-01

    Focal liver opacification during endoscopic retrograde cholangiography (ERCP) is an uncommon complication caused by excessive pressure during contrast injection. In this situation, ERCP must be interrupted and the position of the cannula checked. We recommend that these images be excluded from the diagnosis of tumor or cystic cavities. 4 refs

  13. Endoscopic management of bile leaks after laparoscopic ...

    African Journals Online (AJOL)

    2013-11-04

    Nov 4, 2013 ... 1 required mesh repair of a large incisional hernia. Discussion. In this study, three-quarters of postoperative bile leaks were suitable for endoscopic management and were treated with combinations of ES and bile duct ... is more rapid in dogs with stents compared with sphincterotomy alone.[8,10,18,19] The.

  14. Endoscopic Third Ventriculostomy: Success and Failure.

    Science.gov (United States)

    Deopujari, Chandrashekhar E; Karmarkar, Vikram S; Shaikh, Salman T

    2017-05-01

    Endoscopic third ventriculostomy (ETV) has now become an accepted mode of hydrocephalus treatment in children. Varying degrees of success for the procedure have been reported depending on the type and etiology of hydrocephalus, age of the patient and certain technical parameters. Review of these factors for predictability of success, complications and validation of success score is presented.

  15. Peroral Endoscopic Myotomy: Establishing a New Program

    Science.gov (United States)

    Kumta, Nikhil A.; Mehta, Shivani; Kedia, Prashant; Weaver, Kristen; Sharaiha, Reem Z.; Fukami, Norio; Minami, Hitomi; Casas, Fernando; Gaidhane, Monica; Lambroza, Arnon

    2014-01-01

    Achalasia is an esophageal motility disorder characterized by incomplete relaxation of the lower esophageal sphincter (LES) and aperistalsis of the esophageal body. Treatment of achalasia is aimed at decreasing the resting pressure in the LES. Peroral endoscopic myotomy (POEM), derived from natural orifice transluminal endoscopic surgery (NOTES) and advances in endoscopic submucosal dissection (ESD), presents a novel, minimally invasive, and curative endoscopic treatment for achalasia. POEM involves an esophageal mucosal incision followed by creation of a submucosal tunnel crossing the esophagogastric junction and myotomy before closure of the mucosal incision. Although the procedure is technically demanding and requires a certain degree of skill and competency, treatment success is high (90%) with low complication rates. Since the first described POEM in humans in 2010, it has been used increasingly at centers worldwide. This article reviews available published clinical studies demonstrating POEM efficacy and safety in order to present a proposal on how to establish a dedicated POEM program and reach base proficiency for the procedure. PMID:25324996

  16. Endoscopic third ventriculostomy and choroid plexus cauterization ...

    African Journals Online (AJOL)

    Background: Endoscopic third ventriculostomy (ETV) and Choroid Plexus Cauterization (CPC) have been recommended as reliable surgical options in developing countries for childhood hydrocephalus owing to reported shunt failures in shunt dependency. Objective: To evaluate outcomes of the ETV and ETV-CPC ...

  17. An illumination system for endoscopic applications

    DEFF Research Database (Denmark)

    2013-01-01

    The present disclosure relates to an illumination system for endoscopic applications comprising at least one substantially monochromatic light source having a predefined central wavelength between 400 and 500 nm or between 500 and 550 nm, an optical transmission path adapted to guide light emanat...... for photodynamic diagnosis and/or therapy of bladder cancer is further disclosed herein....

  18. Esophageal Stricture Post Endoscopic Injection Sclerotherapy ...

    African Journals Online (AJOL)

    Only two patients had esophageal varices secondary to viral hepatitis B liver cirrhosis. Their presentation was commonly with difficulty in swallowing and few cases presented with food impaction. The majority of patients were treated with wire guided endoscopic Savary Gilliard dilation. Conclusion: Esophageal stricture ...

  19. Oesophageal cancer and experience with endoscopic stent ...

    African Journals Online (AJOL)

    Background: Oesophageal cancer often presents in advanced stages not amenable to surgical resection. In such patients, palliation of dysphagia remains the mainstay of management. Objectives: To determine the burden of advanced oesophageal cancer and to document the experience with endoscopic metal stent ...

  20. Endoscopic surgery simulation in a virtual environment

    NARCIS (Netherlands)

    Dumay, A.C.M.; Jense, G.J.

    1995-01-01

    The minimally invasive nature of endoscopic surgery allows operations to be performed on patients through small incisions, often under local anaesthesia. Patient recovery times and cosmetic detriment are thus greatly reduced, while overall quality of care is improved. Presently, surgeons are trained

  1. Successful Endoscopic Therapy of Traumatic Bile Leaks

    Directory of Open Access Journals (Sweden)

    Matthew P. Spinn

    2013-02-01

    Full Text Available Traumatic bile leaks often result in high morbidity and prolonged hospital stay that requires multimodality management. Data on endoscopic management of traumatic bile leaks are scarce. Our study objective was to evaluate the efficacy of the endoscopic management of a traumatic bile leak. We performed a retrospective case review of patients who were referred for endoscopic retrograde cholangiopancreatography (ERCP after traumatic bile duct injury secondary to blunt (motor vehicle accident or penetrating (gunshot trauma for management of bile leaks at our tertiary academic referral center. Fourteen patients underwent ERCP for the management of a traumatic bile leak over a 5-year period. The etiology included blunt trauma from motor vehicle accident in 8 patients, motorcycle accident in 3 patients and penetrating injury from a gunshot wound in 3 patients. Liver injuries were grade III in 1 patient, grade IV in 10 patients, and grade V in 3 patients. All patients were treated by biliary stent placement, and the outcome was successful in 14 of 14 cases (100%. The mean duration of follow-up was 85.6 days (range 54-175 days. There were no ERCP-related complications. In our case review, endoscopic management with endobiliary stent placement was found to be successful and resulted in resolution of the bile leak in all 14 patients. Based on our study results, ERCP should be considered as first-line therapy in the management of traumatic bile leaks.

  2. Endoscopic treatment of vesicoureteral reflux: Current status

    Directory of Open Access Journals (Sweden)

    Goran Lackgren

    2009-01-01

    Full Text Available Vesicoureteral reflux (VUR affects around 1% of all children. It carries an increased risk of febrile urinary tract infections (UTIs and is associated with impaired renal function. Endoscopic treatment with NASHA/Dx gel (dextranomer microspheres in a stabilized hyaluronic acid-based gel of nonanimal origin is minimally invasive, well tolerated and provides cure rates approaching those of open surgery: ~90% in several studies. It has also been shown to be effective in a variety of ′complicated′ cases. Endoscopic treatment is therefore considered preferable to open surgery and long-term antibiotic prophylaxis. Nontreatment of VUR is being discussed as an alternative option, whereby children are treated with antibiotics only when UTIs occur. Considering all the available evidence, however, active intervention with endoscopic treatment remains preferable. A new approach to managing VUR may nevertheless be considered, with treatment decisions based not only on the grade of reflux, but also factors such as age, sex, renal scarring, and bladder dysfunction. Open surgery would be reserved for use only in the ~10% of children not responding to endoscopic treatment, and patients with refluxing primary megaureter.

  3. Subcutaneous endoscopically assisted ligation using miniport for ...

    African Journals Online (AJOL)

    Background This report describes the first miniport method using subcutaneous endoscopically assisted ligation (SEAL) for the treatment of girls with inguinal hernia. To validate its safety and efficacy, the authors evaluated their early experiences. Methods Between April 2014 and December 2014, 19 SEALs using miniport ...

  4. Optimization of portal placement for endoscopic calcaneoplasty

    NARCIS (Netherlands)

    van Sterkenburg, Maayke N.; Groot, Minke; Sierevelt, Inger N.; Spennacchio, Pietro A.; Kerkhoffs, Gino M. M. J.; van Dijk, C. Niek

    2011-01-01

    The purpose of our study was to determine an anatomic landmark to help locate portals in endoscopic calcaneoplasty. The device for optimal portal placement (DOPP) was developed to measure the distance from the distal fibula tip to the calcaneus (DFC) in 28 volunteers to determine the location of the

  5. Endoscopic Surgery for Traumatic Acute Subdural Hematoma

    Directory of Open Access Journals (Sweden)

    Hiroyuki Kon

    2014-01-01

    Full Text Available Traumatic acute subdural hematoma (ASDH is generally addressed by craniotomy under general anesthesia. We report a patient whose traumatic ASDH was treated under local anesthesia by one-burr-hole endoscopic surgery. This 87-year-old woman had undergone coil embolization for a ruptured right middle-cerebral artery aneurysm and placement of a ventriculoperitoneal shunt for normal pressure hydrocephalus 5 years earlier. Upon admission, she manifested consciousness disturbance after suffering head trauma and right hemiplegia. Her Glasgow Coma Scale score was 8 (E2V2M4. Computed tomography (CT demonstrated a thick, left-frontotemporal ASDH. Due to her advanced age and poor condition, we performed endoscopic surgery rather than craniotomy to evacuate the ASDH. Under local anesthesia, we made a burr hole in her left forehead and increased its size to 15 mm in diameter. After introducing a transparent sheath into the hematoma cavity with a rigid endoscope, the clot was evacuated with a suction tube. The arterial bleeding point was electrically coagulated. A postoperative CT scan confirmed the reduction of the hematoma. There was neither brain compression nor brain swelling. Her consciousness disturbance and right hemiplegia improved immediately. Endoscopic surgery may represent a viable method to address traumatic intracranial hematomas in some patients.

  6. Fatigue-related changes in the coordination of lifting and their effect of low back load

    NARCIS (Netherlands)

    Van Dieën, Jaap H.; Toussaint, Huub M.; Maurice, Cora; Mientjes, Martine

    1996-01-01

    In this study, changes in movement coordination caused by fatigue that developed during repetitive lifting were examined. Five men performed 6 times a 5-min bout of lifting an 8-kg barbell at 15 lifts/min, using two lifting techniques; one minimized trunk rotation (squat lift), and the other

  7. Fixed Wordsize Implementation of Lifting Schemes

    Directory of Open Access Journals (Sweden)

    Tanja Karp

    2007-01-01

    Full Text Available We present a reversible nonlinear discrete wavelet transform with predefined fixed wordsize based on lifting schemes. Restricting the dynamic range of the wavelet domain coefficients due to a fixed wordsize may result in overflow. We show how this overflow has to be handled in order to maintain reversibility of the transform. We also perform an analysis on how large a wordsize of the wavelet coefficients is needed to perform optimal lossless and lossy compressions of images. The scheme is advantageous to well-known integer-to-integer transforms since the wordsize of adders and multipliers can be predefined and does not increase steadily. This also results in significant gains in hardware implementations.

  8. Fitness Tracker for Weight Lifting Style Workouts

    Energy Technology Data Exchange (ETDEWEB)

    Wihl, B. M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2017-02-01

    This document proposes an early, high level design for a fitness tracking system which can automatically log weight lifting style workouts. The system will provide an easy to use interface both physically through the use of several wireless wristband style motion trackers worn on the limbs, and graphically through a smartphone application. Exercise classification will be accomplished by calibration of the user’s specific motions. The system will accurately track a user’s workout, miscounting no more than one repetition in every 20, have sufficient battery life to last several hours, work with existing smartphones and have a cost similar to those of current fitness tracking devices. This document presents the mission background, current state-of-theart, stakeholders and their expectations, the proposed system’s context and concepts, implementation concepts, system requirements, first sublevel function decomposition, possible risks for the system, and a reflection on the design process.

  9. Optimal Control of an Offshore Lifting Operation

    Directory of Open Access Journals (Sweden)

    Kåre M. Mjelde

    1984-04-01

    Full Text Available The optimal control of an offshore operation is analysed: a hideck which is at rest on a barge is lifted from the barge by means of a partly submerged frame that receives buoyancy by pumping water out of three cylinders connected to the frame. Air is pumped into the cylinders in order to maintain a positive difference between the internal air-pressure and the external water-pressure: for any cylinder, this pressure-difference is possibly critical at certain regions located on the cylinder and on a spherical cupola on the top of it. Optimal pumping rates of water and air as a function of time are determined, such as to minimize the maximum of certain weighted pressure differences at the critical regions, and such as to satisfy given geometrical and dynamical boundary conditions.

  10. Insulation Test Cryostat with Lift Mechanism

    Science.gov (United States)

    Fesmire, James E. (Inventor); Dokos, Adam G. (Inventor)

    2016-01-01

    A multi-purpose, cylindrical thermal insulation test apparatus is used for testing insulation materials and systems of materials using a liquid boil-off calorimeter system for absolute measurement of the effective thermal conductivity (k-value) and heat flux of a specimen material at a fixed environmental condition (cold-side temperature, warm-side temperature, vacuum pressure level, and residual gas composition). An inner vessel receives liquid with a normal boiling point below ambient temperature, such as liquid nitrogen, enclosed within a vacuum chamber. A cold mass assembly, including upper and lower guard chambers and middle test vessel, is suspended from a lid of the vacuum canister. Each of the three chambers is filled and vented through a single feedthrough. All fluid and instrumentation feedthroughs are mounted and suspended from a top domed lid allowing easy removal of the cold mass. A lift mechanism allows manipulation of the cold mass assembly and insulation test article.

  11. Endoscopic suturing versus endoscopic clip closure of the mucosotomy during a per-oral endoscopic myotomy (POEM): a case-control study.

    Science.gov (United States)

    Pescarus, Radu; Shlomovitz, Eran; Sharata, Ahmed M; Cassera, Maria A; Reavis, Kevin M; Dunst, Christy M; Swanström, Lee L

    2016-05-01

    Obtaining an adequate mucosal closure is one of the crucial steps in per-oral endoscopic myotomy (POEM). Thus far, there have been no objective data comparing the various available closure techniques. This case-controlled study attempts to compare the application of endoscopic clips versus endoscopic suturing for mucosotomy closure during POEM cases. A retrospective review of our prospective POEM database was performed. All cases in which endoscopic suturing was used to close the mucosotomy were matched to cases in which standard endoclips were used. Overall complication rate, closure time and mucosal closure costs between the two groups were compared. Both techniques offer good clinical results with good mucosal closure and the absence of postoperative leak. Closure time was significantly shorter (p = 0.044) with endoscopic clips (16 ± 12 min) when compared to endoscopic suturing (33 ± 11 min). Overall, the total closure cost analysis showed a trend toward lower cost with clips (1502 ± 849 USD) versus endoscopic suturing (2521 ± 575 USD) without reaching statistical significance (p = 0.073). The use of endoscopic suturing seems to be a safe method for mucosal closure in POEM cases. Closure time is longer with suturing than conventional closure with clips, and there is a trend toward higher overall cost. Endoscopic suturing is likely most cost-effective for difficult cases where conventional closure methods fail.

  12. Endoscopic sleeve gastroplasty: the learning curve.

    Science.gov (United States)

    Hill, Christine; El Zein, Mohamad; Agnihotri, Abhishek; Dunlap, Margo; Chang, Angela; Agrawal, Alison; Barola, Sindhu; Ngamruengphong, Saowanee; Chen, Yen-I; Kalloo, Anthony N; Khashab, Mouen A; Kumbhari, Vivek

    2017-09-01

    Endoscopic sleeve gastroplasty (ESG) is gaining traction as a minimally invasive bariatric treatment. Concern that the learning curve may be slow, even among those proficient in endoscopic suturing, is a barrier to widespread implementation of the procedure. Therefore, we aimed to define the learning curve for ESG in a single endoscopist experienced in endoscopic suturing who participated in a 1-day ESG training program.  Consecutive patients who underwent ESG between February 2016 and November 2016 were included. The performing endoscopist, who is proficient in endoscopic suturing for non-ESG procedures, participated in a 1-day ESG training session before offering ESG to patients. The outcome measurements were length of procedure (LOP) and number of plications per procedure. Nonlinear regression was used to determine the learning plateau and calculate the learning rate.  Twenty-one consecutive patients (8 males), with mean age 47.7 ± 11.2 years and mean body mass index 41.8 ± 8.5 kg/m 2 underwent ESG. LOP decreased significantly across consecutive procedures, with a learning plateau at 101.5 minutes and a learning rate of 7 cases ( P  = 0.04). The number of plications per procedure also decreased significantly across consecutive procedures, with a plateau at 8 sutures and a learning rate of 9 cases ( P  < 0.001). Further, the average time per plication decreased significantly with consecutive procedures, reaching a plateau at 9 procedures ( P  < 0.001).  Endoscopists experienced in endoscopic suturing are expected to achieve a reduction in LOP and number of plications per procedure in successive cases, with progress plateauing at 7 and 9 cases, respectively.

  13. Endoscopic management of biliary injuries and leaks

    Directory of Open Access Journals (Sweden)

    T S Chandrasekar

    2012-01-01

    Full Text Available Bile duct injuries and subsequent leaks can occur following laparoscopic and open cholecystectomies and also during other hepatobiliary surgeries. Various patient related and technical factors are implicated in the causation of biliary injuries. Over a period of twenty five years managing such patients of biliary injuries our team has found a practical approach to assess the cause of biliary injuries based on the symptoms, clinical examination and imaging. Bismuth classification is helpful in most of the cases. Immediate referral to a centre experienced in the management of bile duct injury and timely intervention is associated with improved outcomes. Resuscitation, correcting dyselectrolytemia, aspiration of undrained biloma and antibiotics take the priority in the management. The goal is to restore the bile conduit, and to prevent short and longterm complications such as biliary fistula, intra-abdominal abscess, biliary stricture, recurrent cholangitis and secondary biliary cirrhosis. Endoscopic therapy by reducing the transpapillary pressure gradient helps in reducing the leak. Endoscopic therapy with biliary sphincterotomy alone or with additional placement of a biliary stent/ nasobiliary drainage is advocated. In our tertiary care referral unit, we found endoscopic interventions are useful in situations where there is leak with associated CBD calculus or a foreign body, peripheral bile duct injury, cystic duct stump leak and partial bile duct injury with leak/ narrowing of the lumen. Endotherapy is not useful in case of complete transection (total cut off and complete stricture involving common hepatic or common bile ducts. In conclusion, endoscopic treatment can be considered a highly effective therapy and should be the first-line therapy in such patients. Though less successful, an endoscopic attempt is warranted in patients suffering from central bile duct leakages failing which surgical management is recommended.

  14. Radiological findings after endoscopic incision of ureterocele

    International Nuclear Information System (INIS)

    Cheon, Jung Eun; Kim, In One; Seok, Eul Hye; Cha, Joo Hee; Choi, Gook Myung; Kim, Woo Sun; Yeon, Kyung Mo; Kim, Kwang Myung; Choi, Hwang; Cheon, Jung Eun; Seok, Eul Hye; Cha, Joo Hee; Choi, Guk Myung

    2001-01-01

    Endoscopic incision of ureterocele is considered a simple and safe method for decompression of urinary tract obstruction above ureterocele. The purpose of this study was to evaluate the radiological findings after endoscopic incision of ureterocele. We retrospectively reviewed the radiological findings (ultrasonography (US), intravenous urography, and voiding cystourethrography(VCU)) in 16 patients with ureterocele who underwent endoscopic incision (mean age at surgery, 15 months; M:F 3:13; 18 ureteroceles). According to the postoperative results, treatment was classified as successful when medical treatment was still required, and second operation when additional surgical treatment was required. Postoperative US (n=10) showed that in all patients, urinary tract obstruction was relieved: the kidney parenchima was thicker and the ureterocele was smaller. Intravenous urography (n=8), demonstrated that in all patients, urinary tract obstruction and the excretory function of the kidney had improved. Postoperative VCU indicated that in 92% of patients (12 of 13), endoscopic incision of the ureterocele led to vesicoureteral reflux(VUR). Of these twelve, seven (58%) showed VUR of more than grade 3, while newly developed VUR was seen in five of eight patients (63%) who had preoperative VCU. Surgery was successful in four patients (25%), partially successful in three (19%), and a second operation-on account of recurrent urinary tract infection and VUR of more than grase 3 during the follow-up period-was required by nine (56%). Although endoscopic incision of a ureterocele is a useful way of relieving urinary tract obstruction, an ensuing complication may be VUR. Postoperative US and intravenous urography should be used to evaluate parenchymal change in the kidney and improvement of uronary tract obstructon, while to assess the extend of VUR during the follow-up period , postoperative VCU is required

  15. UF{sub 6} cylinder lifting equipment enhancements

    Energy Technology Data Exchange (ETDEWEB)

    Hortel, J.M. [Martin Marietta Energy Systems, Inc., Piketon, OH (United States)

    1991-12-31

    This paper presents numerous enhancements that have been made to the Portsmouth lifting equipment to ensure the safe handling of cylinders containing liquid uranium hexafluoride (UF{sub 6}). The basic approach has been to provide redundancy to all components of the lift path so that any one component failure would not cause the load to drop or cause any undesirable movement.

  16. Design methodology for trailing-edge high-lift mechanisms

    NARCIS (Netherlands)

    Zaccai, D; Bertels, F.G.A.; Vos, R.

    2016-01-01

    A new methodology has been developed that integrates the preliminary wing design with trailing edge high-lift systems and accounts for three-dimensional flap kinematics. The high-lift system in the developed application includes the kinematic synthesis of four common mechanisms (dropped-hinge,

  17. Similarity of different lifting techniques in trunk muscular synergies.

    Science.gov (United States)

    Mirakhorlo, Mojtaba; Azghani, Mahmood Reza

    2015-01-01

    Lifting is known to be a major reason for musculoskeletal injuries. In this way, lifting has a crucial effect on human musculoskeletal system and intensity of this impact depends slightly on the selection of techniques. Underlying mechanisms by which trunk muscles are executed during performing lifting are central to biomechanical study of lifting techniques. In the current study, the trunk muscular control mechanisms of lifting are investigated using the synergetic control analysis. Non-negative matrix factorization has been used to extract trunk muscles synergies from their activities - which are computed by a previously validated musculoskeletal model - during different lifting techniques aimed to investigate motor control strategies. Three lifting techniques are considered; stoop, squat and semi-squat. Three synergies account for variety among muscle activation of trunk muscles with related VAF (Variability Account For) of over 95%. Trunk muscle synergy weightings and related time-varying coefficients are calculated for each kind of lifting techniques considering three synergies. Paired correlation coefficients between muscle synergies are all greater than 0.91 (P < 0.05) suggesting that trunk muscle synergies are similar for examined techniques in spite of their kinematic diversity. This similarity can be a result of their common ultimate goal. The acquired results also elucidate the mechanisms of muscle activation patterns that can be exploited in future studies and ergonomic interventions.

  18. 49 CFR 178.970 - Bottom lift test.

    Science.gov (United States)

    2010-10-01

    ... conducted for the qualification of all Large Packagings design types designed to be lifted from the base. (b... permissible gross mass, the load being evenly distributed. (c) Test method. All Large Packaging design types... Large Packagings design types designed to be lifted from the base, there may be no permanent deformation...

  19. An experimental evaluation of psychophysical criteria for repetitive lifting work.

    Science.gov (United States)

    Gamberale, F; Ljungberg, A S; Annwall, G; Kilbom, A

    1987-12-01

    Two experiments were performed to test the reliability and validity of psychophysically determined maximum acceptable workloads for setting lifting standards. The perceived workload in a repetitive diagonal lifting task was found to be a positively accelerated function of the weight lifted and of the work pace respectively. A twofold increase in objective workload resulted in a four- to fivefold increase in perceived workload. This relation was independent of previous occupational experience of lifting work. The psychophysically assessed maximum acceptable workloads for this type of lifting task appeared to be satisfactorily reproducible when subjects had to adjust work pace or when they were left free to adjust both the weight and the work pace. However, the results raised several questions concerning the applicability of the psychophysical assessment of maximum acceptable lifting work. Slight changes in the instructions given to the subjects had a definite effect on the selection of workloads. Furthermore, the workloads selected by subjects with previous occupational experience of lifting work - i e, warehouse workers - were systematically lower than those selected by subjects without such previous experience - i e, office employees. At the same time, the warehouse workers rated perceived exertion higher than the office employees, indicating that previous occupational experience of lifting work enhanced the subjective assessment of physical effort. There were no consistent relations between the workloads found acceptable by the subjects and their physical characteristics and performance capacity.

  20. Outgoing Cuntz scattering system for a coisometric lifting and ...

    Indian Academy of Sciences (India)

    orthonormal basis of the full Fock space. 2. Unitaries associated to coisometric lifting. In this section we construct a coisometry associated to coisometric lifting which plays an important role in this article. For simplicity we assume that d is finite throughout this article but all the results here can be derived also for d = ∞. A tuple ...

  1. 21 CFR 880.5500 - AC-powered patient lift.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false AC-powered patient lift. 880.5500 Section 880.5500 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED... powered device either fixed or mobile, used to lift and transport patients in the horizontal or other...

  2. Feasibility of Retrofitting Lifts on Commuter and Light Rail Vehicles

    Science.gov (United States)

    1980-09-01

    The objectives of this study were to determine if lift retrofit applications to rail vehicles are technically feasible, and if so, the extent to which existing bus lift technology can be utilized. This report examines some of the technical issues ass...

  3. Comparison of Methods of Teaching Children Proper Lifting ...

    African Journals Online (AJOL)

    Objective: This study was designed to determine the effects of three teaching methods on children\\'s ability to demonstrate and recall their mastery of proper lifting techniques. Method: Ninety-three primary five and six public school children who had no knowledge of proper lifting technique were assigned into three equal ...

  4. Obesity-related changes in prolonged repetitive lifting performance.

    Science.gov (United States)

    Ghesmaty Sangachin, Mahboobeh; Cavuoto, Lora A

    2016-09-01

    Despite the rising prevalence of obesity, little is known about its moderating effects on injury risk factors, such as fatigue, in occupational settings. This study investigated the effect of obesity, prolonged repetitive lifting and their interaction on lifting performance of 14 participants, 7 obese (mean body mass index (BMI): 33.2 kg m(-2)) and 7 non-obese (mean BMI: 22.2 kg m(-2)) subjects. To present a physically challenging task, subjects performed repetitive lifting for 1 h at 120% of their maximum acceptable weight of lift. Generalized linear mixed models were fit to posture and acceleration data. The obese group bent to a ∼10° lower peak trunk sagittal flexion angle, had 17% lower root mean square (RMS) jerk and took 0.8 s longer per lift. Over time, the obese group increased their trunk transverse and sagittal posterior accelerations while the non-obese maintained theirs. Although the majority of lifting variables were unaffected by BMI or its interaction with prolonged lifting duration, the observed differences, combined with a greater upper body mass, necessitate a more cautious use of existing psychophysical lifting limits for individuals who are obese, particularly when fatigued. Copyright © 2016 Elsevier Ltd. All rights reserved.

  5. Head and face reconstruction

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/002980.htm Head and face reconstruction To use the sharing features on this page, please enable JavaScript. Head and face reconstruction is surgery to repair or ...

  6. Face Detection and Recognition

    National Research Council Canada - National Science Library

    Jain, Anil K

    2004-01-01

    .... Specifically, the report addresses the problem of detecting faces in color images in the presence of various lighting conditions and complex backgrounds as well as recognizing faces under variations...

  7. Masculinity and Lifting Accidents among Danish Ambulance Personnel

    DEFF Research Database (Denmark)

    Hansen, Claus D.; Nielsen, Kent J

    alone. Aim This presentation investigates whether failure to use AT is linked to male ambulance workers’ gender identity? Is lifting patients alone a way of performing masculinity for AP’s? Method Data is taken from MARS, a panel study of AP workers in Denmark (n = 1606). Information from questionnaires...... measuring traditional male role norms (MRNI), safety attitudes and safety behavior will be linked to company register information on work injuries categorized as lifting accidents. Logistic regression is used to analyse associations between masculinity, lifting behavior, and lifting accidents. Results...... alone. For those 5% scoring lowest on MRNI the probability of reporting lifting alone was 6% while this figure was 17% for those scoring above the 95th percentile. Conclusion This study suggests that male ambulance workers performance of masculinity might pose a threat to their safety. AP...

  8. Maximum Acceptable Weight of Lift reflects peak lumbosacral extension moments in a Functional Capacity Evaluation test using free style, stoop, and squat lifting

    NARCIS (Netherlands)

    Kuijer, P.P.F.M.; van Oostrom, S.H.; Duijzer, K.; van Dieen, J.H.

    2012-01-01

    It is unclear whether the maximum acceptable weight of lift (MAWL), a common psychophysical method, reflects joint kinetics when different lifting techniques are employed. In a within-participants study (n = 12), participants performed three lifting techniques - free style, stoop and squat lifting

  9. Maximum acceptable weight of lift reflects peak lumbosacral extension moments in a functional capacity evaluation test using free style, stoop and squat lifting

    NARCIS (Netherlands)

    Kuijer, P. P. F. M.; van Oostrom, S. H.; Duijzer, K.; van Dieën, J. H.

    2012-01-01

    It is unclear whether the maximum acceptable weight of lift (MAWL), a common psychophysical method, reflects joint kinetics when different lifting techniques are employed. In a within-participants study (n = 12), participants performed three lifting techniques - free style, stoop and squat lifting

  10. Neuromuscular coordination of squat lifting, II: Individual differences.

    Science.gov (United States)

    Scholz, J P; McMillan, A G

    1995-02-01

    This article reports individual differences in the coordination (ie, the relative timing of joint movements and muscle activity) of squat lifting identified by extended analysis of data reported in the authors' companion article in this issue. Two post hoc groups of 6 subjects each were identified from the original sample of 15 subjects based on qualitative differences in knee-lumbar spine relative motion plots during load acceleration. Subjects lifted a crate containing 15% to 75% of their maximum lifting capacity using a symmetrical squat-lift technique. Movement kinematic data were obtained with videography, and the electromyographic (EMG) activity of the vastus lateralis and erector spinae muscles was recorded with surface EMG. Measurements of coordination derived both kinematically and via EMG and the kinematic data were examined for group differences. Subjects in group 2 limited lumbar spine motion during load acceleration for all loads lifted, whereas those in group 1 limited lumbar spine motion more when lifting the heaviest loads. These differences were obvious both qualitatively, via knee-lumbar spine relative motion plots, and quantitatively, via measures of the relative timing of joint motions early in the lift. The effect of load on the coordination of these joints was the same for both post hoc groups after initial load acceleration. Significant differences in other kinematic measurements were also found between these groups. Despite specific instructions about how to lift the load, individual subjects coordinated their joints differently during the initial, accelerative phase of squat lifting. Individual differences in coordination in response to load increases could be categorized into two patterns, although the data of 2 subjects were difficult to categorize and thus not included in these analyses. Whether the two dominant patterns have consequences for stress to the joints during lifting remains to be determined.

  11. Optimization of lift gas allocation in a gas lifted oil field as non-linear optimization problem

    Directory of Open Access Journals (Sweden)

    Roshan Sharma

    2012-01-01

    Full Text Available Proper allocation and distribution of lift gas is necessary for maximizing total oil production from a field with gas lifted oil wells. When the supply of the lift gas is limited, the total available gas should be optimally distributed among the oil wells of the field such that the total production of oil from the field is maximized. This paper describes a non-linear optimization problem with constraints associated with the optimal distribution of the lift gas. A non-linear objective function is developed using a simple dynamic model of the oil field where the decision variables represent the lift gas flow rate set points of each oil well of the field. The lift gas optimization problem is solved using the emph'fmincon' solver found in MATLAB. As an alternative and for verification, hill climbing method is utilized for solving the optimization problem. Using both of these methods, it has been shown that after optimization, the total oil production is increased by about 4. For multiple oil wells sharing lift gas from a common source, a cascade control strategy along with a nonlinear steady state optimizer behaves as a self-optimizing control structure when the total supply of lift gas is assumed to be the only input disturbance present in the process. Simulation results show that repeated optimization performed after the first time optimization under the presence of the input disturbance has no effect in the total oil production.

  12. A Comparative Analysis of Lumbar Spine Mechanics During Barbell- and Crate-Lifting -Implications for Occupational Lifting Task Assessments.

    Science.gov (United States)

    Zehr, Jackie D; Carnegie, Danielle R; Welsh, Timothy N; Beach, Tyson A C

    2018-02-13

    To compare the effects of object handled and handgrip used on lumbar spine motion and loading during occupational lifting task simulations. Eight male and eight female volunteers performed barbell and crate lifts with a pronated (barbell) and neutral (crate) handgrip. The mass of barbells/crates lifted was identical across the objects and fixed at 11.6 kg and 9.3 kg for men and women, respectively. The initial heights of barbells/crates were individualized to mid-shank level. Body segment kinematics and foot-ground reaction kinetics were collected, and then input into an electromyography-assisted dynamic biomechanical model to quantify lumbar spine motion and loading. Lumbar compression and net lumbosacral moment magnitudes were 416 N and 17 Nm lower when lifting barbell than when lifting a crate (p 0.392) or flexion/extension velocities (p > 0.085). A crate- and barbell-lifting task can be used interchangeably if assessing lifting mechanics based on peak spine motion variables. If assessments are based on the spine loading responses to task demands, however, then crate- and barbell-lifting task cannot be used interchangeably.

  13. Aerodynamic Interference between Oscillating Lifting Surfaces and Fuselage Part 2: Some Applications of Oscillating Lifting Surface Theory

    Directory of Open Access Journals (Sweden)

    Valentin Adrian Jean BUTOESCU

    2014-03-01

    Full Text Available This is the second article of a series that deals with the calculation of the aerodynamic unsteady forces on lifting surfaces. It presents some new important details on the lifting surface theory that performs oscillations in subsonic flow. These features will be applied to the aerodynamic response to certain kind of gusts and to the flapping wing calculations.

  14. Pneumonia and mortality after percutaneous endoscopic gastrostomy insertion.

    Science.gov (United States)

    Azzopardi, Neville; Ellul, Pierre

    2013-01-01

    Percutaneous endoscopic gastrostomy feeding provides enteral nutrition to patients with neurological dysphagia. Thirty-day mortality rates of 4-26% have been reported, with pneumonia being the common cause post-percutaneous endoscopic gastrostomy insertion. This retrospective analysis of percutaneous endoscopic gastrostomy tube insertions in Malta (January 2008 - June 2010) compares the incidence of pneumonia in patients fed through a nasogastric tube versus in those fed via a percutaneous endoscopic gastrostomy tube. We analyzed the indications, poor prognostic factors and mortality for percutaneous endoscopic gastrostomy insertion. Ninety-seven patients underwent percutaneous endoscopic gastrostomy insertion. Fifty-four patients received nasogastric feeds before percutaneous endoscopic gastrostomy feeds. Patients on nasogastric feeds developed 32 episodes of pneumonia over a total of 7884 days of feeds (1 every 246 days). Patients with percutaneous endoscopic gastrostomy feeds after a period of nasogastric feeds developed 48 pneumonia episodes over 36,238 days (1 every 755 days). Patients with percutaneous endoscopic gastrostomy feeds without previous nasogastric feeds developed 28 pneumonia episodes over 23,983 days (1 every 856 days), and this was statistically significant (χ 2 test p value nasogastric feeds. However, pneumonia is still the major cause of death among percutaneous endoscopic gastrostomy patients.

  15. Management of a large mucosal defect after duodenal endoscopic resection.

    Science.gov (United States)

    Fujihara, Shintaro; Mori, Hirohito; Kobara, Hideki; Nishiyama, Noriko; Matsunaga, Tae; Ayaki, Maki; Yachida, Tatsuo; Masaki, Tsutomu

    2016-08-07

    Duodenal endoscopic resection is the most difficult type of endoscopic treatment in the gastrointestinal tract (GI) and is technically challenging because of anatomical specificities. In addition to these technical difficulties, this procedure is associated with a significantly higher rate of complication than endoscopic treatment in other parts of the GI tract. Postoperative delayed perforation and bleeding are hazardous complications, and emergency surgical intervention is sometimes required. Therefore, it is urgently necessary to establish a management protocol for preventing serious complications. For instance, the prophylactic closure of large mucosal defects after endoscopic resection may reduce the risk of hazardous complications. However, the size of mucosal defects after endoscopic submucosal dissection (ESD) is relatively large compared with the size after endoscopic mucosal resection, making it impossible to achieve complete closure using only conventional clips. The over-the-scope clip and polyglycolic acid sheets with fibrin gel make it possible to close large mucosal defects after duodenal ESD. In addition to the combination of laparoscopic surgery and endoscopic resection, endoscopic full-thickness resection holds therapeutic potential for difficult duodenal lesions and may overcome the disadvantages of endoscopic resection in the near future. This review aims to summarize the complications and closure techniques of large mucosal defects and to highlight some directions for management after duodenal endoscopic treatment.

  16. Presto lift-a facelift that preserves the retaining ligaments and SMAS tethering.

    Science.gov (United States)

    Funk, Wolfgang

    2017-03-01

    Producing youthful facial appearance by face-lifting often comes along with an undesired loss of patient's individual phenotype. This may result from insufficient preservation of retaining ligaments, the "guardians of facial identify," and from severance of the intersegmental connections of the superficial musculo-aponeurotic system (SMAS), which tether, structure, and compartmentalize facial soft tissue into defined, relevant anatomical zones. The technique reported here preserves most retaining ligaments. They serve to fix the facial soft tissue mass in loco. With the possible exception of the zygomatic-cutaneous ligament, they are only carefully distended. The SMAS intersegmental connections and the zygomatic SMAS border are preserved to retain effective points of facial tissue fixture. Aging-associated thinning and lengthening of the lower eyelid are reduced by midfacial-submalar preparation (Aston 1996). Subplatysmal preparation and disconnection of the cranial-platysmal border permits optimal modeling of neck structure. The combination of preservation of retaining ligaments and SMAS tethering ("PRESTO facelift") introduced here as a novel face-lifting technique conserves the individual esthetics of the patient by approaching her/his individual phenotype from decades ago. In addition, undesired outcomes of facelift surgery and common risks of facelift surgery are circumvented. The PRESTO facelift technique generates optimal esthetic results that conserve a patient's personal facial identity, besides restoring a more youthful appearance and being rapid and safe.

  17. endoscope-i: an innovation in mobile endoscopic technology transforming the delivery of patient care in otolaryngology.

    Science.gov (United States)

    Mistry, N; Coulson, C; George, A

    2017-11-01

    Digital and mobile device technology in healthcare is a growing market. The introduction of the endoscope-i, the world's first endoscopic mobile imaging system, allows the acquisition of high definition images of the ear, nose and throat (ENT). The system combines the e-i Pro camera app with a bespoke engineered endoscope-i adaptor which fits securely onto the iPhone or iPod touch. Endoscopic examination forms a salient aspect of the ENT work-up. The endoscope-i therefore provides a mobile and compact alternative to the existing bulky endoscopic systems currently in use which often restrict the clinician to the clinic setting. Areas covered: This article gives a detailed overview of the endoscope-i system together with its applications. A review and comparison of alternative devices on the market offering smartphone adapted endoscopic viewing systems is also presented. Expert commentary: The endoscope-i fulfils unmet needs by providing a compact, highly portable, simple to use endoscopic viewing system which is cost-effective and which makes use of smartphone technology most clinicians have in their pocket. The system allows real-time feedback to the patient and has the potential to transform the way that healthcare is delivered in ENT as well as having applications further afield.

  18. Endoscopic placement of the small-bowel video capsule by using a capsule endoscope delivery device.

    Science.gov (United States)

    Holden, Jeremy P; Dureja, Parul; Pfau, Patrick R; Schwartz, Darren C; Reichelderfer, Mark; Judd, Robert H; Danko, Istvan; Iyer, Lalitha V; Gopal, Deepak V

    2007-05-01

    Capsule endoscopy performed via the traditional peroral route is technically challenging in patients with dysphagia, gastroparesis, and/or abnormal upper-GI (UGI) anatomy. To describe the indications and outcomes of cases in which the AdvanCE capsule endoscope delivery device, which has recently been cleared by the Food and Drug Administration, was used. Retrospective, descriptive, case series. Tertiary care, university hospital. We report a case series of 16 consecutive patients in whom the AdvanCE delivery device was used. The study period was May 2005 through July 2006. Endoscopic delivery of the video capsule to the proximal small bowel by using the AdvanCE delivery device. Indications, technique, and completeness of small bowel imaging in patients who underwent endoscopic video capsule delivery. The AdvanCE delivery device was used in 16 patients ranging in age from 3 to 74 years. The primary indications for endoscopic delivery included inability to swallow the capsule (10), altered UGI anatomy (4), and gastroparesis (2). Of the 4 patients with altered UGI anatomy, 3 had dual intestinal loop anatomy (ie, Bilroth-II procedure, Whipple surgery, Roux-en-Y gastric bypass) and 1 had a failed Nissen fundoplication. In all cases, the capsule was easily deployed without complication, and complete small intestinal imaging was achieved. Small patient size. Endoscopic placement of the Given PillCam by use of the AdvanCE delivery device was safe and easily performed in patients for whom capsule endoscopy would otherwise have been contraindicated or technically challenging.

  19. Weight lifting in women with breast-cancer-related lymphedema.

    Science.gov (United States)

    Schmitz, Kathryn H; Ahmed, Rehana L; Troxel, Andrea; Cheville, Andrea; Smith, Rebecca; Lewis-Grant, Lorita; Bryan, Cathy J; Williams-Smith, Catherine T; Greene, Quincy P

    2009-08-13

    Weight lifting has generally been proscribed for women with breast-cancer-related lymphedema, preventing them from obtaining the well-established health benefits of weight lifting, including increases in bone density. We performed a randomized, controlled trial of twice-weekly progressive weight lifting involving 141 breast-cancer survivors with stable lymphedema of the arm. The primary outcome was the change in arm and hand swelling at 1 year, as measured through displaced water volume of the affected and unaffected limbs. Secondary outcomes included the incidence of exacerbations of lymphedema, number and severity of lymphedema symptoms, and muscle strength. Participants were required to wear a well-fitted compression garment while weight lifting. The proportion of women who had an increase of 5% or more in limb swelling was similar in the weight-lifting group (11%) and the control group (12%) (cumulative incidence ratio, 1.00; 95% confidence interval, 0.88 to 1.13). As compared with the control group, the weight-lifting group had greater improvements in self-reported severity of lymphedema symptoms (P=0.03) and upper- and lower-body strength (Pweight lifting had no significant effect on limb swelling and resulted in a decreased incidence of exacerbations of lymphedema, reduced symptoms, and increased strength. (ClinicalTrials.gov number, NCT00194363.) 2009 Massachusetts Medical Society

  20. EMG Processing Based Measures of Fatigue Assessment during Manual Lifting

    Directory of Open Access Journals (Sweden)

    E. F. Shair

    2017-01-01

    Full Text Available Manual lifting is one of the common practices used in the industries to transport or move objects to a desired place. Nowadays, even though mechanized equipment is widely available, manual lifting is still considered as an essential way to perform material handling task. Improper lifting strategies may contribute to musculoskeletal disorders (MSDs, where overexertion contributes as the highest factor. To overcome this problem, electromyography (EMG signal is used to monitor the workers’ muscle condition and to find maximum lifting load, lifting height and number of repetitions that the workers are able to handle before experiencing fatigue to avoid overexertion. Past researchers have introduced several EMG processing techniques and different EMG features that represent fatigue indices in time, frequency, and time-frequency domain. The impact of EMG processing based measures in fatigue assessment during manual lifting are reviewed in this paper. It is believed that this paper will greatly benefit researchers who need a bird’s eye view of the biosignal processing which are currently available, thus determining the best possible techniques for lifting applications.

  1. EMG Processing Based Measures of Fatigue Assessment during Manual Lifting

    Science.gov (United States)

    Marhaban, M. H.; Abdullah, A. R.

    2017-01-01

    Manual lifting is one of the common practices used in the industries to transport or move objects to a desired place. Nowadays, even though mechanized equipment is widely available, manual lifting is still considered as an essential way to perform material handling task. Improper lifting strategies may contribute to musculoskeletal disorders (MSDs), where overexertion contributes as the highest factor. To overcome this problem, electromyography (EMG) signal is used to monitor the workers' muscle condition and to find maximum lifting load, lifting height and number of repetitions that the workers are able to handle before experiencing fatigue to avoid overexertion. Past researchers have introduced several EMG processing techniques and different EMG features that represent fatigue indices in time, frequency, and time-frequency domain. The impact of EMG processing based measures in fatigue assessment during manual lifting are reviewed in this paper. It is believed that this paper will greatly benefit researchers who need a bird's eye view of the biosignal processing which are currently available, thus determining the best possible techniques for lifting applications. PMID:28303251

  2. EMG Processing Based Measures of Fatigue Assessment during Manual Lifting.

    Science.gov (United States)

    Shair, E F; Ahmad, S A; Marhaban, M H; Mohd Tamrin, S B; Abdullah, A R

    2017-01-01

    Manual lifting is one of the common practices used in the industries to transport or move objects to a desired place. Nowadays, even though mechanized equipment is widely available, manual lifting is still considered as an essential way to perform material handling task. Improper lifting strategies may contribute to musculoskeletal disorders (MSDs), where overexertion contributes as the highest factor. To overcome this problem, electromyography (EMG) signal is used to monitor the workers' muscle condition and to find maximum lifting load, lifting height and number of repetitions that the workers are able to handle before experiencing fatigue to avoid overexertion. Past researchers have introduced several EMG processing techniques and different EMG features that represent fatigue indices in time, frequency, and time-frequency domain. The impact of EMG processing based measures in fatigue assessment during manual lifting are reviewed in this paper. It is believed that this paper will greatly benefit researchers who need a bird's eye view of the biosignal processing which are currently available, thus determining the best possible techniques for lifting applications.

  3. Neuromuscular coordination of squat lifting, I: Effect of load magnitude.

    Science.gov (United States)

    Scholz, J P; Millford, J P; McMillan, A G

    1995-02-01

    In this study, we examined changes in kinematic and electromyographic (EMG) measurements of the coordination (ie, the relative timing of joint movements and muscle activity) of a squat-lifting task in response to lifting increasing loads. Fifteen male industrial workers served as a sample of convenience. Subjects lifted a weighted crate containing 15% to 75% of their maximum lifting capacity using a symmetrical squat-lift technique. Movement kinematics were obtained with videography. The relative phase between joint motions was derived. The EMG activity of the vastus lateralis muscle (VL) and the erector spinae muscle (ES) was recorded, and the relative timing of their onsets and peaks was estimated. The relative phase of movement between joints such as the knee and lumbar spine changed in a quasi-linear fashion with increasing load during lifting but not during lowering. The relative time of onset of ES EMG activity and its peak activity changed in a manner consistent with the interjoint relative phase results. The timing of VL events were not affected by increasing the load. Relatively continuous changes in interlimb coordination occur when increasing the load lifted from an initial squatting posture. Changes in EMG relative timing partially corroborate the kinematic evidence for changes in coordination with load scaling. The results indicate the need for further study to determine whether the observed changes in coordination are beneficial or detrimental to the musculoskeletal system. Clinicians should evaluate performance of this task under a range of task conditions.

  4. Endoscopic versus open bursectomy of lateral malleolar bursitis.

    Science.gov (United States)

    Choi, Jae Hyuck; Lee, Kyung Tai; Lee, Young Koo; Kim, Dong Hyun; Kim, Jeong Ryoul; Chung, Woo Chull; Cha, Seung Do

    2012-06-01

    Compare the result of endoscopic versus open bursectomy in lateral malleolar bursitis. Prospective evaluation of 21 patients (22 ankles) undergoing either open or endoscopic excision of lateral malleolar bursitis. The median age was 64 (38-79) years old. The median postoperative follow-up was 15 (12-18) months. Those patients undergoing endoscopic excision showed a higher satisfaction rate (excellent 9, good 2) than open excision (excellent 4, good 3, fair 1). The wounds also healed earlier in the endoscopic group although the operation time was slightly longer. One patient in the endoscopic group had recurrence of symptoms but complications in the open group included one patient with skin necrosis, one patient with wound dehiscence, and two patients of with superficial peroneal nerve injury. Endoscopic resection of the lateral malleolar bursitis is a promising technique and shows favorable results compared to the open resection. Therapeutic studies-Investigating the result of treatment, Level II.

  5. Advances in the endoscopic management of gastric outflow disorders.

    Science.gov (United States)

    Storm, Andrew C; Ryou, Marvin

    2017-11-01

    Disorders of gastric outflow and outlet obstruction include a variety of benign and malignant disorders such as peptic strictures, foreign bodies, gastroparesis, and cancers of the stomach, duodenum, and pancreas. Historically, a majority of patients presenting with gastric outlet obstruction (GOO) were to the result of peptic ulcers and surgical management of peptic ulcer complications was a mainstay of general surgical training. Invasive surgery is being performed less frequently today due to realization of the role of Helicobacter pylori in peptic ulcer disease and the introduction of novel endoscopic techniques for management of GOO. For malignant GOO, the introduction of lumen-apposing metal stents have opened the door for the development and performance of endoscopic ultrasound-guided gastric bypass procedures. For benign GOO, including gastroparesis and pyloric stenosis, endoscopic myotomy shows promise. Endoscopic ultrasound-guided gastric bypass, per-oral endoscopic myotomy, and other novel techniques in the endoscopic management of GOO, are discussed in this review.

  6. Endoscopic treatment of vesicoureteral reflux in pediatric patients

    Directory of Open Access Journals (Sweden)

    Jong Wook Kim

    2013-04-01

    Full Text Available Endoscopic treatment is a minimally invasive treatment for managing patients with vesicoureteral reflux (VUR. Although several bulking agents have been used for endoscopic treatment, dextranomer/hyaluronic acid is the only bulking agent currently approved by the U.S. Food and Drug Administration for treating VUR. Endoscopic treatment of VUR has gained great popularity owing to several obvious benefits, including short operative time, short hospital stay, minimal invasiveness, high efficacy, low complication rate, and reduced cost. Initially, the success rates of endoscopic treatment have been lower than that of open antireflux surgery. However, because injection techniques have been developed, a recent study showed higher success rates of endoscopic treatment than open surgery in the treatment of patients with intermediate- and high-grade VUR. Despite the controversy surrounding its effectiveness, endoscopic treatment is considered a valuable treatment option and viable alternative to long-term antibiotic prophylaxis.

  7. Current Considerations in Direct Percutaneous Endoscopic Jejunostomy

    Directory of Open Access Journals (Sweden)

    Yanfei Zhu

    2012-01-01

    Full Text Available For patients who are unable to meet their nutritional needs orally, enteral feeding via a percutaneous approach has become the mainstay of therapy. However, traditional enteral feeding methods, such as percutaneous endoscopic gastrostomy, may not be viable options for patients with severe gastroparesis or gastric outlet obstruction. Direct percutaneous endoscopic jejunostomy (DPEJ is an enteral access method that was first described more than 20 years ago and has gained popularity among gastroenterologists. This review discusses the indications for and contraindications to DPEJ, the procedure, the application of DPEJ in specific subsets of patients with gastrointestinal disorders, and presents a brief tabular summary of complications and success rates of DPEJ in case series published since 2000.

  8. Emerging indications of endoscopic radiofrequency ablation

    Science.gov (United States)

    Becq, Aymeric; Camus, Marine; Rahmi, Gabriel; de Parades, Vincent; Marteau, Philippe

    2015-01-01

    Introduction Radiofrequency ablation (RFA) is a well-validated treatment of dysplastic Barrett's esophagus. Other indications of endoscopic RFA are under evaluation. Results Four prospective studies (total 69 patients) have shown that RFA achieved complete remission of early esophageal squamous intra-epithelial neoplasia at a rate of 80%, but with a substantial risk of stricture. In the setting of gastric antral vascular ectasia, two prospective monocenter studies, and a retrospective multicenter study, (total 51 patients), suggest that RFA is efficacious in terms of reducing transfusion dependency. In the setting of chronic hemorrhagic radiation proctopathy, a prospective monocenter study and a retrospective multicenter study (total 56 patients) suggest that RFA is an efficient treatment. A retrospective comparative study (64 patients) suggests that RFA improves stents patency in malignant biliary strictures. Conclusions Endoscopic RFA is an upcoming treatment modality in early esophageal squamous intra-epithelial neoplasia, as well as in gastric, rectal, and biliary diseases. PMID:26279839

  9. Advances in the Endoscopic Management of Obesity

    Directory of Open Access Journals (Sweden)

    Jason Behary

    2015-01-01

    Full Text Available Obesity has become a worldwide epidemic with significant impact on quality of life, morbidity, and mortality rates. Over the past two decades, bariatric surgery has established itself as the most effective and durable treatment for patients with obesity and its associated comorbidities. However, despite the use of minimally invasive techniques, bariatric surgery is associated with complications in approximately 15% of patients, has a substantial cost, and is used by only 1% of patients who are eligible. Therefore, there is a need for effective minimally invasive therapies, which will be utilized by the large proportion of obese patients who are in desperate need of treatment but are not receiving any. Endoscopic approaches to the management of obesity have been developed, with the aim of delivering more effective, durable, and safer methods of weight reduction. In this paper, we review currently available and future endoscopic therapies that will likely join the armamentarium used in the management of obesity.

  10. Comprehensive review on endonasal endoscopic sinus surgery

    Science.gov (United States)

    Weber, Rainer K.; Hosemann, Werner

    2015-01-01

    Endonasal endoscopic sinus surgery is the standard procedure for surgery of most paranasal sinus diseases. Appropriate frame conditions provided, the respective procedures are safe and successful. These prerequisites encompass appropriate technical equipment, anatomical oriented surgical technique, proper patient selection, and individually adapted extent of surgery. The range of endonasal sinus operations has dramatically increased during the last 20 years and reaches from partial uncinectomy to pansinus surgery with extended surgery of the frontal (Draf type III), maxillary (grade 3–4, medial maxillectomy, prelacrimal approach) and sphenoid sinus. In addition there are operations outside and beyond the paranasal sinuses. The development of surgical technique is still constantly evolving. This article gives a comprehensive review on the most recent state of the art in endoscopic sinus surgery according to the literature with the following aspects: principles and fundamentals, surgical techniques, indications, outcome, postoperative care, nasal packing and stents, technical equipment. PMID:26770282

  11. Portal biliopathy treated with endoscopic biliary stenting

    Directory of Open Access Journals (Sweden)

    Sung Jin Jeon

    2016-03-01

    Full Text Available Portal biliopathy is defined as abnormalities in the extra- and intrahepatic ducts and gallbladder of patients with portal hypertension. This condition is associated with extrahepatic venous obstruction and dilatation of the venous plexus of the common bile duct, resulting in mural irregularities and compression of the biliary tree. Most patients with portal biliopathy remain asymptomatic, but approximately 10% of them advance to symptomatic abdominal pain, jaundice, and fever. Magnetic resonance cholangiopancreatography and endoscopic retrograde cholangiopancreatography are currently used as diagnostic tools because they are noninvasive and can be used to assess the regularity, length, and degree of bile duct narrowing. Management of portal biliopathy is aimed at biliary decompression and reducing the portal pressure. Portal biliopathy has rarely been reported in Korea. We present a symptomatic case of portal biliopathy that was complicated by cholangitis and successfully treated with biliary endoscopic procedures.

  12. Fundus imaging with a nasal endoscope

    Directory of Open Access Journals (Sweden)

    P Mahesh Shanmugam

    2015-01-01

    Full Text Available Wide field fundus imaging is needed to diagnose, treat, and follow-up patients with retinal pathology. This is more applicable for pediatric patients as repeated evaluation is a challenge. The presently available imaging machines though provide high definition images, but carry the obvious disadvantages of either being costly or bulky or sometimes both, which limits its usage only to large centers. We hereby report a technique of fundus imaging using a nasal endoscope coupled with viscoelastic. A regular nasal endoscope with viscoelastic coupling was placed on the cornea to image the fundus of infants under general anesthesia. Wide angle fundus images of various fundus pathologies in infants could be obtained easily with readily available instruments and without the much financial investment for the institutes.

  13. Devices and Endoscopic Bariatric Therapies for Obesity.

    Science.gov (United States)

    Saunders, Katherine H; Igel, Leon I; Saumoy, Monica; Sharaiha, Reem Z; Aronne, Louis J

    2018-04-17

    In this review, we describe the FDA-approved and investigational devices and endoscopic bariatric therapies for the treatment of obesity. We focus on literature published in the past few years and present mechanisms of action as well as efficacy and safety data. Devices and endoscopic procedures are emerging options to fill the significant treatment gap in the management of obesity. Not only are these devices and procedures minimally invasive and reversible, but they are potentially more effective than antiobesity medications, often safer for poor surgical candidates and possibly less expensive than bariatric surgery. As many patients require a variety of management strategies (medications, devices, procedures, and/or surgery) in addition to lifestyle modifications to achieve clinically significant weight loss, the future of obesity treatment involves a multidisciplinary approach. Combinations of advanced treatment strategies can lead to additive or synergistic weight loss. This is an area that requires further investigation.

  14. Endoscopic Treatment of Intrasheath Peroneal Tendon Subluxation

    Directory of Open Access Journals (Sweden)

    Frederick Michels

    2013-01-01

    Full Text Available Intrasheath subluxation of the peroneal tendons within the peroneal groove is an uncommon problem. Open exploration combined with a peroneal groove-deepening procedure and retinacular reefing is the recommended treatment. This extensive lateral approach needs incision of the intact superior peroneal retinaculum and repair afterwards. We treated three patients with a painful intrasheath subluxation using an endoscopic approach. During this tendoscopy both tendons were inspected. The distal muscle fibers of the peroneus brevis tendon were resected in two patients. A partial tear was debrided in the third patient. All patients had a good result. No wound-healing problems or other complications occurred. Early return to work and sports was possible. An endoscopic approach was successful in treatment of an intrasheath subluxation of the peroneal tendons.

  15. Using scent to lift customers' moods

    NARCIS (Netherlands)

    M.A.A.M. Leenders (Mark); A. Smidts (Ale); A. El Haji (Anouar)

    2016-01-01

    markdownabstractFaced with tougher and tougher online competition, traditional retailers are scrambling to find ways to exploit the advantages of realworld sales that e-commerce vendors can’t easily duplicate, such as taste and feel – and smell. Strong scents brighten attitudes and open wallets, and

  16. Recent trends in endoscopic management of achalasia

    OpenAIRE

    Tolone, Salvatore; Limongelli, Paolo; del Genio, Gianmattia; Brusciano, Luigi; Russo, Antonio; Cipriano, Lorenzo; Terribile, Marco; Docimo, Giovanni; Ruggiero, Roberto; Docimo, Ludovico

    2014-01-01

    Esophageal achalasia is a chronic and progressive motility disorder characterized by absence of esophageal body peristalsis associated with an impaired relaxation of lower esophageal sphincter (LES) and usually with an elevated LES pressure, leading to an altered passage of bolus through the esophago-gastric junction. A definitive cure for achalasia is currently unavailable. Palliative treatment options provide only food and liquid bolus intake and relief of symptoms. Endoscopic therapy for a...

  17. Gastric varices: Classification, endoscopic and ultrasonographic management

    Directory of Open Access Journals (Sweden)

    Zeeshan Ahmad Wani

    2015-01-01

    Full Text Available Gastric varices (GV are responsible for 10-30% of all variceal hemorrhage. However, they tend to bleed more severely with higher mortality. Around 35-90% rebleed after spontaneous hemostasis. Approximately 50% of patients with cirrhosis of liver harbor gastroesophageal varices. In this review, new treatment modalities in the form of endoscopic treatment options and interventional radiological procedures have been discussed besides discussion on classification and pathophysiology of GV.

  18. ENDOSCOPIC THERAPY IN EXTRAHEPATIC BILIARY STRICTURES

    OpenAIRE

    Haapamäki, Carola

    2016-01-01

    Extrahepatic biliary strictures are mainly managed using stents when treated endoscopically. At present, the main stent types in clinical practice are non expandable plastic stents (NEPS) and self-expandable metallic stents (SEMS), with an up to tenfold cost for the latter. In current praxis, SEMS are widely used for palliative management of malignant biliary strictures as they have longer patency.The role of SEMS in preoperative stenting and the management of benign biliary strictures (BBS) ...

  19. Endoscopic Treatment of Intrasheath Peroneal Tendon Subluxation

    OpenAIRE

    Michels, Frederick; Jambou, St?phane; Guillo, St?phane; Van Der Bauwhede, Jan

    2012-01-01

    Intrasheath subluxation of the peroneal tendons within the peroneal groove is an uncommon problem. Open exploration combined with a peroneal groove-deepening procedure and retinacular reefing is the recommended treatment. This extensive lateral approach needs incision of the intact superior peroneal retinaculum and repair afterwards. We treated three patients with a painful intrasheath subluxation using an endoscopic approach. During this tendoscopy both tendons were inspected. The distal mus...

  20. Limited Approach in Endoscopic Dacryocystorhinostomy of Pediatrics

    OpenAIRE

    Hashemi, Seyyed Mostafa; Eshaghian, Afrooz

    2017-01-01

    Background: Limited spatial nasal cavity in children, make pediatric dacryocystorhinostomy (DCR) a difficult surgical procedure. We apply a limited approach to pediatric DCR and follow them for their consequences. Materials and Methods: An experimental study was done in pediatric DCR with limited approach (age < 14-year-old). After written consent, with general anesthesia, with nasal endoscopic surgery, lacrimal bone is exposed and extruded. In contrast with routine procedure, ascending proce...

  1. A Primer on Endoscopic Electronic Medical Records

    OpenAIRE

    Atreja, Ashish; Rizk, Maged; Gurland, Brooke

    2010-01-01

    Endoscopic electronic medical record systems (EEMRs) are now increasingly utilized in many endoscopy centers. Modern EEMRs not only support endoscopy report generation, but often include features such as practice management tools, image and video clip management, inventory management, e-faxes to referring physicians, and database support to measure quality and patient outcomes. There are many existing software vendors offering EEMRs, and choosing a software vendor can be time consuming and co...

  2. Hydrofoils: optimum lift-off speed for sailboats.

    Science.gov (United States)

    Baker, R M

    1968-12-13

    For a hydrofoil sailboat there is a unique optimum lift-off speed. Before this speed is reached, if there are no parasitic vertical hydrofoil appendages, the submerged or partially submerged hydrofoils increase drag and degrade performance. As soon as this speed is reached and the hydrofoils are fully and promptly deployed, the performance of a hydrofoil-borne craft is significantly improved. At speeds exceeding optimum lift-off speed, partially submerged hydrofoils impair performance if there is no significant effect of loading on the hydrofoil lift-to-drag ratio.

  3. Neurologic disorders associated with weight lifting and bodybuilding.

    Science.gov (United States)

    Busche, Kevin

    2009-02-01

    Weight lifting and other forms of strength training are becoming more common because of an increased awareness of the need to maintain individual physical fitness. Emergency room data indicate that injuries caused by weight training have become more universal over time, likely because of increased participation rates. Neurologic injuries can result from weight lifting and related practices. Although predominantly peripheral nervous system injuries have been described, central nervous system disease may also occur. This article illustrates the types of neurologic disorders associated with weight lifting.

  4. Weight and cost estimating relationships for heavy lift airships

    Science.gov (United States)

    Gray, D. W.

    1979-01-01

    Weight and cost estimating relationships, including additional parameters that influence the cost and performance of heavy-lift airships (HLA), are discussed. Inputs to a closed loop computer program, consisting of useful load, forward speed, lift module positive or negative thrust, and rotors and propellers, are examined. Detail is given to the HLA cost and weight program (HLACW), which computes component weights, vehicle size, buoyancy lift, rotor and propellar thrust, and engine horse power. This program solves the problem of interrelating the different aerostat, rotors, engines and propeller sizes. Six sets of 'default parameters' are left for the operator to change during each computer run enabling slight data manipulation without altering the program.

  5. Endoscopic Instruments and Electrosurgical Unit for Colonoscopic Polypectomy

    OpenAIRE

    Park, Hong Jun

    2016-01-01

    Colorectal polypectomy is an effective method for prevention of colorectal cancer. Many endoscopic instruments have been used for colorectal polypectomy, such as snares, forceps, endoscopic clips, a Coagrasper, retrieval net, injector, and electrosurgery generator unit (ESU). Understanding the characteristics of endoscopic instruments and their proper use according to morphology and size of the colorectal polyp will enable endoscopists to perform effective polypectomy. I reviewed the characte...

  6. [Endoscopic implantation of endoprostheses in incurable esophageal and cardia cancer].

    Science.gov (United States)

    Wiesenhaken, U; Rogos, R

    1990-03-01

    The palliative treatment of tumorous stenosis of the esophagus and cardio-esophageal region by intubation with an endoprosthesis leads to an improved quality of life. The used endoscopic positioning provides better results than the surgical procedure. This method is easy in handling and has only few complications. The endoscopic positioning of endoprosthesis is also a really alternative of alimentary fistula. The positioning of plastic prosthesis under endoscopic control should be given preference in the palliative treatment of obstructing cardio-esophageal malignancy.

  7. Per-oral endoscopic myotomy for achalasia: An American perspective

    OpenAIRE

    Friedel, David; Modayil, Rani; Iqbal, Shahzad; Grendell, James H; Stavropoulos, Stavros N

    2013-01-01

    Achalasia is an uncommon esophageal motility disorder characterized by the selective loss of enteric neurons leading to absence of peristalsis and impaired relaxation of the lower esophageal sphincter. Per-oral endoscopic myotomy (POEM) is a novel modality for the treatment of achalasia performed by gastroenterologists and surgeons. It represents a natural orifice transluminal endoscopic surgery (NOTES) approach to Heller myotomy. POEM has the minimal invasiveness of an endoscopic procedure t...

  8. Treatment Strategy after Incomplete Endoscopic Resection of Early Gastric Cancer

    OpenAIRE

    Kim, Sang Gyun

    2016-01-01

    Endoscopic resection of early gastric cancer is defined as incomplete when tumor cells are found at the resection margin upon histopathological examination. However, a tumor-positive resection margin does not always indicate residual tumor; it can also be caused by tissue contraction during fixation, by the cautery effect during endoscopic resection, or by incorrect histopathological mapping. Cases of highly suspicious residual tumor require additional endoscopic or surgical resection. For in...

  9. Practical Approach to Endoscopic Management for Bleeding Gastric Varices

    Energy Technology Data Exchange (ETDEWEB)

    Lim, Young Suk [Asan Medical Center, University of Ulsan College of Medicine, Seoul (Korea, Republic of)

    2012-02-15

    Bleeding from gastric varices is generally more severe than bleeding from esophageal varices, although it occurs less frequently. Recently, new endoscopic treatment options and interventional radiological procedures have broadened the therapeutic armamentarium for gastric varices. This review provides an overview of the classification and pathophysiology of gastric varices, an introduction to current endoscopic and interventional radiological management options for gastric varices, and details of a practical approach to endoscopic variceal obturation using N-butyl-2-cyanoacrylate.

  10. Treatment of nonseptic bursitis with endoscopic surgery

    Directory of Open Access Journals (Sweden)

    Azad Yıldırım

    2015-09-01

    Full Text Available Objective: The aim of this study was to show that endoscopic surgery is a simple and acceptable method for various problems associated with wounds, range of motion and that such surgery ensures an early return to work after treatment of nonresponding nonseptic bursitis. Methods: Thirty-two patients with nonseptic bursitis caused by repeated minor trauma that did not respond to medical treatment from 2008 to 2012 were included in this study. Radiographic [anteroposterior and lateral], ultrasound, macro and microscopic analyses of drainage liquid and aerobic and anaerobic cultures were obtained from the patients for the diagnosis. Results: The mean age was 40.8 years. Fifteen patients had prepatellar bursitis, 13 had olecranon bursitis and 4 had ankle bursitis. Two patients had a history of falling on their knee. The other patients had a history of repetitive stimulation .The mean follow up period was 2.6 years [range. 2-5 years] and no medical complications occurred after the endoscopic surgery; such as scarring, loss of sensation and infection. One recurrence in response to medical treatment was observed. Conclusion: Endoscopic bursectomy is a short and acceptable procedure with excellent results in terms of returning to work early and minimal wound related problems. J Clin Exp Invest 2015; 6 (3: 220-223

  11. Endoscopic laryngeal web formation for pitch elevation.

    Science.gov (United States)

    Anderson, Jennifer

    2007-02-01

    Endoscopic laryngeal web formation has been used to elevate the speaking voice, primarily in male to female transsexuals as part of gender reassignment intervention. The goal of this article is to review the literature regarding surgical treatment for pitch elevation and to describe a novel method of laryngeal web formation. The results of this technique are also reported in a series of six patients. All patients were assessed and treated at the St. Michael's Hospital Voice Disorders Clinic, a tertiary referral centre for voice disorders. Pre- and postoperative voice recordings, acoustic analysis, and videostroboscopic examinations were performed in this series. The acoustic data collected included isolated vowel samples, a reading task, and a modified voice range profile. The patients all underwent successful endoscopic web formation with a Gelfoam augmentation technique. The voice results collected at least 6 months after vocal fold web formation demonstrate a dramatic increase in the habitual speaking fundamental frequency. This new modification for endoscopic web formation has been shown to be a successful procedure for permanent elevation of pitch with little or no morbidity.

  12. Recent trends in endoscopic management of achalasia.

    Science.gov (United States)

    Tolone, Salvatore; Limongelli, Paolo; Del Genio, Gianmattia; Brusciano, Luigi; Russo, Antonio; Cipriano, Lorenzo; Terribile, Marco; Docimo, Giovanni; Ruggiero, Roberto; Docimo, Ludovico

    2014-09-16

    Esophageal achalasia is a chronic and progressive motility disorder characterized by absence of esophageal body peristalsis associated with an impaired relaxation of lower esophageal sphincter (LES) and usually with an elevated LES pressure, leading to an altered passage of bolus through the esophago-gastric junction. A definitive cure for achalasia is currently unavailable. Palliative treatment options provide only food and liquid bolus intake and relief of symptoms. Endoscopic therapy for achalasia aims to disrupt or weaken the lower esophageal sphincter. Intra-sphincteric injection of botulinum toxin is reserved for elderly or severely ill patients. Pneumatic dilation provides superior results than botulinum toxin injection and a similar medium-term efficacy almost comparable to that attained after surgery. Per oral endoscopic myotomy is a promising option for treating achalasia, but it requires increased experience and further objective and long-term follow up. This article will review different endoscopic treatments in achalasia, and summarize the short-term and long-term outcomes.

  13. [Endoscopic dacryocystorhinostomy: role of the ophthalmologist].

    Science.gov (United States)

    Nogueira, A; Zaragoza, P; Toledano, N; Genol, I; Plaza, G

    2014-04-01

    To evaluate the results of endoscopic dacryocystorhinostomy (DCR) with or without support of the ophthalmologist. A retrospective study of 100 cases of endoscopic DCR surgery conducted by an otolaryngologist between June 2008 and December 2009. Of the 100 cases, 50 were operated with surgical support of the ophthalmologist, who inserted Bowman probes in the upper and lower canaliculi, while in the other 50 cases it was the otolaryngologist who performed this, without support of the ophthalmologist. The evaluation of the results after 2 years included the subjective perception, the lacrimal patency after lacrimal syringing, and lacrimal functional test after modified Jones test. Of the 100 DCR reviewed, more than 50% required complementary treatment by the otolaryngologist, mainly septoplasty. As for the resolution of epiphora, without support of the ophthalmologist, 75% the patients reported an overall subjective improvement, but this reached 92% in the surgical group with support of the ophthalmologist, which was a statistically significant difference. Endoscopic DCR is effective in the treatment of epiphora, but its results improve when the ophthalmologist inserts the probes in the lacrimal canaliculi during the surgical procedure. Copyright © 2012 Sociedad Española de Oftalmología. Published by Elsevier Espana. All rights reserved.

  14. Low cost video endoscopes with simplified integration

    Science.gov (United States)

    Wippermann, F. C.; Beckert, E.; Dannberg, P.; Eberhardt, R.; Bräuer, A.; Messerschmidt, B.

    2010-05-01

    The availability of miniature imagers enables endoscopic systems with simplified integration. Here, the optical elements together with the imager are located at the distal end of these so called video endoscopes. The overall system can be flexible since no relaying optics is required in order to image the object at a remote position. Compared to conventional flexible systems based on light guiding fiber bundles, higher spatial resolutions can be achieved due to the ever decreasing pixel size in CMOS imager fabrication technology. We propose system designs and prototypes for f/4, 3mm outer diameter endoscopes with 70° and 110° field of view using a CMOS imager with 650x650 pixels of 2.8μm pitch. The systems are based on a simplified and rugged integration using a single polymer lens made by injection molding, a GRIN lens and a dispensed lens made of UV curing material allowing for high performance paired with low fabrication cost allowing for the usage as a disposable unit. Additionally, a side view system angled at 30° is presented based on a tilting reflection prism requiring minimum construction space allowing for an outer diameter of 3mm.

  15. Design of Endoscopic Capsule With Multiple Cameras.

    Science.gov (United States)

    Gu, Yingke; Xie, Xiang; Li, Guolin; Sun, Tianjia; Wang, Dan; Yin, Zheng; Zhang, Pengfei; Wang, Zhihua

    2015-08-01

    In order to reduce the miss rate of the wireless capsule endoscopy, in this paper, we propose a new system of the endoscopic capsule with multiple cameras. A master-slave architecture, including an efficient bus architecture and a four level clock management architecture, is applied for the Multiple Cameras Endoscopic Capsule (MCEC). For covering more area of the gastrointestinal tract wall with low power, multiple cameras with a smart image capture strategy, including movement sensitive control and camera selection, are used in the MCEC. To reduce the data transfer bandwidth and power consumption to prolong the MCEC's working life, a low complexity image compressor with PSNR 40.7 dB and compression rate 86% is implemented. A chipset is designed and implemented for the MCEC and a six cameras endoscopic capsule prototype is implemented by using the chipset. With the smart image capture strategy, the coverage rate of the MCEC prototype can achieve 98% and its power consumption is only about 7.1 mW.

  16. New flexible endoscope for otologic application

    Science.gov (United States)

    Marchan, Mark L.

    1993-07-01

    Endoscopy has become an important procedure in many medical specialties. For the Otologist, however, space limitations within the ear have restricted development of endoscopic procedures. The desire for minimally invasive techniques in Otology has demonstrated itself through the work of numerous physicians who have performed procedures ranging from diagnostic inspection of the middle ear to viewing the interior of the cochlea. To assist in performing such endoscopic procedures, Xomed-Treace has developed a line of flexible fiberoptic endoscopes for use by the Otologist. These scopes combine illumination and imaging fiber bundles within a small diameter unit ranging in size from 0.8 mm to 1.2 mm. The 1.2 mm scope is produced with an angled, rigid stainless steel sheath. The 0.8 mm scope is flexible with the ability to articulate 120 degree(s) in one direction. The fiberscopes have been designed for the Otologist to produce a good resolution image while allowing ease of operation through ergonomics and consideration of the surgical anatomy.

  17. Endoscopic characteristics of colorectal serrated lesions.

    Science.gov (United States)

    Kashida, Hiroshi; Ikehara, Nobunao; Hamatani, Shigeharu; Kudo, Shin-ei; Kudo, Masatoshi

    2011-01-01

    With the recent changes of pathological concepts, colorectal serrated lesions can be now divided into traditional serrated adenoma, typical hyperplastic polyp and sessile serrated polyp. The aim of this study is to clarify the endoscopic differences among these three groups. A total number of 362 serrated lesions larger than 5mm were evaluated. These were detected with ordinary view and observed also with magnifying chromoendoscopic view. The final pathologic diagnosis of the resected specimens was made blinded. There were significant differences between traditional serrated adenoma and sessile serrated polypconcerning location, configuration and color. In chromoendoscopy, most of sessile serrated polyps and typical hyperplastic polyps showed star-like pattern, in contrast with traditional serrated adenomas most of which had fernor pinecone-like pattern. The differential diagnosis between traditional sessile polyp and the other two was possible with high accuracy. On the other hand, endoscopic distinction between sessile serrated polyp and typical hyperplastic polyp was not easy, except that the location and size were significantly different. We can endoscopically differentiate between traditional serrated adenoma and sessile serrated polyp or typical hyperplastic polyp, but it is difficult to differentiate between the latter two.

  18. The effect of an on-body personal lift assist device (PLAD) on fatigue during a repetitive lifting task.

    Science.gov (United States)

    Lotz, Christy A; Agnew, Michael J; Godwin, Alison A; Stevenson, Joan M

    2009-04-01

    Occupations demanding frequent and heavy lifting are associated with an increased risk of injury. A personal lift assist device (PLAD) was designed to assist human muscles through the use of elastic elements. This study was designed to determine if the PLAD could reduce the level of general and local back muscle fatigue during a cyclical lifting task. Electromyography of two erector spinae sites (T9 and L3) was recorded during a 45-min lifting session at six lifts/lowers per minute in which male participants (n=10) lifted a box scaled to represent 20% of their maximum back extensor strength. The PLAD device reduced the severity of muscular fatigue at both muscle sites. RMS amplitude increased minimally (22% and 26%) compared to the no-PLAD condition (104% and 88%). Minimal median frequency decreases (0.33% and 0.41%) were observed in the PLAD condition compared to drops of 12% and 20% in the no-PLAD condition. The PLAD had an additional benefit of minimizing pre-post changes in muscular strength and endurance. The PLAD also resulted in a significantly lower rate of perceived exertion across the lifting session. It was concluded that the PLAD was effective at decreasing the level of back muscular fatigue.

  19. Endoscopic Resection of Lipoma of the Patellar Tendon

    Science.gov (United States)

    Lui, Tun Hing; Lee, Man Wai

    2015-01-01

    Synovial lipoma of the patellar tendon is a very rare entity. It can be associated with rupture of the patellar tendon. We present a case of synovial lipoma that was successfully resected endoscopically. The other indications for patellar tendoscopy include chronic patellar tendinitis and tendinosis, recalcitrant bursitis around the tendon, Osgood-Schlatter disease, and jumper's knee. The major potential danger of this endoscopic procedure is iatrogenic damage to the patellar insertion during endoscopic debridement in patients with jumper's knee or the tibial insertion during endoscopic debridement in patients with Osgood-Schlatter disease. PMID:25973368

  20. Endoscopic treatment of esophageal varices in patients with liver cirrhosis.

    Science.gov (United States)

    Triantos, Christos; Kalafateli, Maria

    2014-09-28

    Variceal bleeding is a life-threatening complication of portal hypertension with a six-week mortality rate of approximately 20%. Patients with medium- or large-sized varices can be treated for primary prophylaxis of variceal bleeding using two strategies: non-selective beta-blockers (NSBBs) or endoscopic variceal ligation (EVL). Both treatments are equally effective. Patients with acute variceal bleeding are critically ill patients. The available data suggest that vasoactive drugs, combined with endoscopic therapy and antibiotics, are the best treatment strategy with EVL being the endoscopic procedure of choice. In cases of uncontrolled bleeding, transjugular intrahepatic portosystemic shunt (TIPS) with polytetrafluoroethylene (PTFE)-covered stents are recommended. Approximately 60% of the patients experience rebleeding, with a mortality rate of 30%. Secondary prophylaxis should start on day six following the initial bleeding episode. The combination of NSBBs and EVL is the recommended management, whereas TIPS with PTFE-covered stents are the preferred option in patients who fail endoscopic and pharmacologic treatment. Apart from injection sclerotherapy and EVL, other endoscopic procedures, including tissue adhesives, endoloops, endoscopic clipping and argon plasma coagulation, have been used in the management of esophageal varices. However, their efficacy and safety, compared to standard endoscopic treatment, remain to be further elucidated. There are safety issues accompanying endoscopic techniques with aspiration pneumonia occurring at a rate of approximately 2.5%. In conclusion, future research is needed to improve treatment strategies, including novel endoscopic techniques with better efficacy, lower cost, and fewer adverse events.

  1. Advanced Endoscopic Navigation: Surgical Big Data, Methodology, and Applications.

    Science.gov (United States)

    Luo, Xiongbao; Mori, Kensaku; Peters, Terry M

    2018-03-05

    Interventional endoscopy (e.g., bronchoscopy, colonoscopy, laparoscopy, cystoscopy) is a widely performed procedure that involves either diagnosis of suspicious lesions or guidance for minimally invasive surgery in a variety of organs within the body cavity. Endoscopy may also be used to guide the introduction of certain items (e.g., stents) into the body. Endoscopic navigation systems seek to integrate big data with multimodal information (e.g., computed tomography, magnetic resonance images, endoscopic video sequences, ultrasound images, external trackers) relative to the patient's anatomy, control the movement of medical endoscopes and surgical tools, and guide the surgeon's actions during endoscopic interventions. Nevertheless, it remains challenging to realize the next generation of context-aware navigated endoscopy. This review presents a broad survey of various aspects of endoscopic navigation, particularly with respect to the development of of endoscopicnavigation techniques. First, we investigate big data with multimodal information involved in endoscopic navigation. Next, we focus on numerous methodologies used for endoscopic navigation. We then review different endoscopic procedures in clinical applications. Finally, we discuss novel techniques and promising directions for the development of endoscopic navigation. Expected final online publication date for the Annual Review of Biomedical Engineering Volume 20 is June 4, 2018. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

  2. Endoscopic removal of a dislocated tumour prothesis from the stomach

    Energy Technology Data Exchange (ETDEWEB)

    Rueckauer, K.; Dinkel, E.

    1985-09-01

    Endoscopic pertubation of oesophagogustric neoplasms is an established method of palliative treatment. The dislocated plastic prosthesis may be removed with difficulties from the stomach endoscopically. A simple technique for endoscopic removal of the prosthesis is described. The tube can be precisely centred within the oesophageal lumen by use of an intestinal decompression tube and additional guidance by the endoscopic retraction forceps. Thus gross damge of the exophytic tumor tissue with bleeding or perforation sequelae can be avoided. Injury to the patient does not exceed that caused by an ordinary gastroscopy.

  3. Submucosal tunnel endoscopy: Peroral endoscopic myotomy and peroral endoscopic tumor resection.

    Science.gov (United States)

    Eleftheriadis, Nikolas; Inoue, Haruhiro; Ikeda, Haruo; Onimaru, Manabu; Maselli, Roberta; Santi, Grace

    2016-01-25

    Peroral endoscopic myotomy (POEM) is an innovative, minimally invasive, endoscopic treatment for esophageal achalasia and other esophageal motility disorders, emerged from the natural orifice transluminal endoscopic surgery procedures, and since the first human case performed by Inoue in 2008, showed exciting results in international level, with more than 4000 cases globally up to now. POEM showed superior characteristics than the standard 100-year-old surgical or laparoscopic Heller myotomy (LHM), not only for all types of esophageal achalasia [classical (I), vigorous (II), spastic (III), Chicago Classification], but also for advanced sigmoid type achalasia (S1 and S2), failed LHM, or other esophageal motility disorders (diffuse esophageal spasm, nutcracker esophagus or Jackhammer esophagus). POEM starts with a mucosal incision, followed by submucosal tunnel creation crossing the esophagogastric junction (EGJ) and myotomy. Finally the mucosal entry is closed with endoscopic clip placement. POEM permitted relatively free choice of myotomy length and localization. Although it is technically demanding procedure, POEM can be performed safely and achieves very good control of dysphagia and chest pain. Gastroesophageal reflux is the most common troublesome side effect, and is well controllable with proton pump inhibitors. Furthermore, POEM opened the era of submucosal tunnel endoscopy, with many other applications. Based on the same principles with POEM, in combination with new technological developments, such as endoscopic suturing, peroral endoscopic tumor resection (POET), is safely and effectively applied for challenging submucosal esophageal, EGJ and gastric cardia tumors (submucosal tumors), emerged from muscularis propria. POET showed up to know promising results, however, it is restricted to specialized centers. The present article reviews the recent data of POEM and POET and discussed controversial issues that need further study and future perspectives.

  4. Business Profile of Boat Lift Net and Stationary Lift Net Fishing Gear in Morodemak Waters Central Java

    Science.gov (United States)

    Hapsari, Trisnani D.; Jayanto, Bogi B.; Fitri, Aristi D. P.; Triarso, I.

    2018-02-01

    Lift net is one of the fishing gears that is used widely in the Morodemak coastal fishing port (PPP) for catching pelagic fish. The yield of fish captured by these fishing gear has high economic value, such as fish belt (Trichiurus sp), squids (Loligo sp) and anchovies (Stelophorus sp). The aims of this research were to determine the technical aspects of boat lift net and stationary lift net fishing gear in Morodemak Waters Demak Regency; to find out the financial aspect of those fishing gears and to analyze the financial feasibility by counting PP, NPV, IRR, and B/C ratio criteria. This research used case study method with descriptive analysis. The sampling method was purposive sampling with 22 fishermen as respondents. The result of the research showed that the average of boat lift net acceptance was Rp 388,580,000. The financial analysis of fisheries boat lift net with the result of NPV Rp 836,149,272, PP 2.44 years, IRR value 54%, and B/C ratio 1.73. The average of stationary lift net acceptance was Rp 27,750,000. The financial analysis lift net with the result of NPV Rp 37,937,601; PP 1.96 years, IRR value 86%, and B/C ratio 1.32. This research had a positive NPV value, B/C ratio >1, and IRR > discount rate (12 %). This study concluded that the fishery business of boat lift net and stationary lift net in Morodemak coastal fishing port (PPP) was worth running.

  5. Oracle ADF Faces cookbook

    CERN Document Server

    Gawish, Amr

    2014-01-01

    This is a cookbook that covers more than 80 different recipes to teach you about different aspects of Oracle ADF Faces. It follows a practical approach and covers how to build your components for reuse in different applications. This book will also help you in tuning the performance of your ADF Faces application. If you are an ADF developer who wants to harness the power of Oracle ADF Faces to create exceptional user interfaces and reactive applications, this book will provide you with the recipes needed to do just that. You will not need to be familiar with Oracle ADF Faces, but you should be

  6. Face inversion increases attractiveness.

    Science.gov (United States)

    Leder, Helmut; Goller, Juergen; Forster, Michael; Schlageter, Lena; Paul, Matthew A

    2017-07-01

    Assessing facial attractiveness is a ubiquitous, inherent, and hard-wired phenomenon in everyday interactions. As such, it has highly adapted to the default way that faces are typically processed: viewing faces in upright orientation. By inverting faces, we can disrupt this default mode, and study how facial attractiveness is assessed. Faces, rotated at 90 (tilting to either side) and 180°, were rated on attractiveness and distinctiveness scales. For both orientations, we found that faces were rated more attractive and less distinctive than upright faces. Importantly, these effects were more pronounced for faces rated low in upright orientation, and smaller for highly attractive faces. In other words, the less attractive a face was, the more it gained in attractiveness by inversion or rotation. Based on these findings, we argue that facial attractiveness assessments might not rely on the presence of attractive facial characteristics, but on the absence of distinctive, unattractive characteristics. These unattractive characteristics are potentially weighed against an individual, attractive prototype in assessing facial attractiveness. Copyright © 2017 The Authors. Published by Elsevier B.V. All rights reserved.

  7. Learning discriminant face descriptor.

    Science.gov (United States)

    Lei, Zhen; Pietikäinen, Matti; Li, Stan Z

    2014-02-01

    Local feature descriptor is an important module for face recognition and those like Gabor and local binary patterns (LBP) have proven effective face descriptors. Traditionally, the form of such local descriptors is predefined in a handcrafted way. In this paper, we propose a method to learn a discriminant face descriptor (DFD) in a data-driven way. The idea is to learn the most discriminant local features that minimize the difference of the features between images of the same person and maximize that between images from different people. In particular, we propose to enhance the discriminative ability of face representation in three aspects. First, the discriminant image filters are learned. Second, the optimal neighborhood sampling strategy is soft determined. Third, the dominant patterns are statistically constructed. Discriminative learning is incorporated to extract effective and robust features. We further apply the proposed method to the heterogeneous (cross-modality) face recognition problem and learn DFD in a coupled way (coupled DFD or C-DFD) to reduce the gap between features of heterogeneous face images to improve the performance of this challenging problem. Extensive experiments on FERET, CAS-PEAL-R1, LFW, and HFB face databases validate the effectiveness of the proposed DFD learning on both homogeneous and heterogeneous face recognition problems. The DFD improves POEM and LQP by about 4.5 percent on LFW database and the C-DFD enhances the heterogeneous face recognition performance of LBP by over 25 percent.

  8. Endoscopic Management of an Intramural Sinus Leak After Per- Oral Endoscopic Myotomy.

    Science.gov (United States)

    Al Taii, Haider; Confer, Bradley; Gabbard, Scott; Kroh, Matthew; Jang, Sunguk; Rodriguez, John; Parsi, Mansour A; Vargo, John J; Ponsky, Jeffrey; Bhatt, Amit

    2016-08-01

    Per-oral endoscopic myotomy (POEM) was developed less than a decade ago for the treatment of achalasia. Its minimally invasive approach and the favorable short-term outcome have led to rapid adoption of the technique throughout the world. As with any new technique, there will be adverse events, and it is important that effective treatments for these adverse events be discussed. We present a case of successful endoscopic management of an intramural sinus leak after a POEM procedure using tandem fully covered esophageal stents.

  9. Energetics of oscillating lifting surfaces using integral conservation laws

    Science.gov (United States)

    Ahmadi, Ali R.; Widnall, Sheila E.

    1987-01-01

    The energetics of oscillating flexible lifting surfaces in two and three dimensions is calculated by the use of integral conservation laws in inviscid incompressible flow for general and harmonic transverse oscillations. Total thrust is calculated from the momentum theorem and energy loss rate due to vortex shedding in the wake from the principle of conservation of mechanical energy. Total power required to maintain the oscillations and hydrodynamic efficiency are also determined. In two dimensions, the results are obtained in closed form. In three dimensions, the distribution of vorticity on the lifting surface is also required as input to the calculations. Thus, unsteady lifting-surface theory must be used as well. The analysis is applicable to oscillating lifting surfaces of arbitrary planform, aspect ratio, and reduced frequency and does not require calculation of the leading-edge thrust.

  10. Vertical Lift by Series Hybrid Power, Phase II

    Data.gov (United States)

    National Aeronautics and Space Administration — A major market for vertical lift aircraft is in urban operations, primarily for police and electronic news gathering (typically a Bell 206 or a Eurocopter AS350)....

  11. Lifting of a sector block for YE-2 at Kawasaki.

    CERN Multimedia

    R. Loveless/U. of Wisconsin

    2000-01-01

    YE-2 is build from machined sector blocks. Trial assembly is carried out horizontally. This picture represents the lifting of a machined sector block destined to the trial assembly of a half disk YE-2 at Kawasaki (KHI) Kobe, Japan.

  12. Aerodynamics Model for a Generic ASTOVL Lift-Fan Aircraft

    Science.gov (United States)

    1995-04-01

    This report describes the aerodynamics model used in a simulation model of : an advanced short takeoff and vertical landing lift-far fighter aircraft. The : simulation model was developed for use in piloted evaluations of transition and : hover fligh...

  13. Centro-lateral subperiosteal vertical midface lift

    Directory of Open Access Journals (Sweden)

    Hönig, Johannes Franz

    2014-03-01

    Full Text Available The use of fiberendoscopic video-assisted technique in facial rejuvenation is one of the most advances in aesthetic plastic surgery of the face. It substitutes the coronal incision without the necessity of skin resection and allows a vertical reposition of the mobile soft tissue of the midface in indicated cases. It can easily be done through a small incision of the scalp just behind the coronal incision and in the temporal area.

  14. Residual moisture and waterborne pathogens inside flexible endoscopes: Evidence from a multisite study of endoscope drying effectiveness.

    Science.gov (United States)

    Ofstead, Cori L; Heymann, Otis L; Quick, Mariah R; Eiland, John E; Wetzler, Harry P

    2018-03-30

    Endoscopy-associated infection transmission is frequently linked to inadequate reprocessing. Residual organic material and moisture may foster biofilm development inside endoscopes. This study evaluated the effectiveness of endoscope drying and storage methods and assessed associations between retained moisture and contamination. Endoscope reprocessing, drying, and storage practices were assessed at 3 hospitals. Researchers performed visual examinations and tests to detect fluid and contamination on patient-ready endoscopes. Fluid was detected in 22 of 45 (49%) endoscopes. Prevalence of moisture varied significantly by site (5%; 83%; 85%; P < .001). High adenosine triphosphate levels were found in 22% of endoscopes, and microbial growth was detected in 71% of endoscopes. Stenotrophomonas maltophilia, Citrobacter freundii, and Lecanicillium lecanii/Verticillium dahliae were found. Retained fluid was associated with significantly higher adenosine triphosphate levels (P < .01). Reprocessing and drying practices conformed with guidelines at 1 site and were substandard at 2 sites. Damaged endoscopes were in use at all sites. Inadequate reprocessing and insufficient drying contributed to retained fluid and contamination found during this multisite study. More effective methods of endoscope reprocessing, drying, and maintenance are needed to prevent the retention of fluid, organic material, and bioburden that could cause patient illness or injury. Copyright © 2018 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.

  15. EFFECT OF HEEL LIFTS ON PATELLOFEMORAL JOINT STRESS DURING RUNNING.

    Science.gov (United States)

    Mestelle, Zachary; Kernozek, Thomas; Adkins, Kelly S; Miller, Jessica; Gheidi, Naghmeh

    2017-10-01

    Patellofemoral pain is a debilitating injury for many recreational runners. Excessive patellofemoral joint stress may be the underlying source of pain and interventions often focus on ways to reduce patellofemoral joint stress. Heel lifts have been used as an intervention within Achilles tendon rehabilitation programs and to address leg length discrepancies. The purpose of this study was to examine the effect of running with heel lifts on patellofemoral joint stress, patellofemoral stress impulse, quadriceps force, step length, cadence, and other related kinematic and spatiotemporal variables. A repeated-measures research design. Sixteen healthy female runners completed five running trials in a controlled laboratory setting with and without 11mm heel lifts inserted in a standard running shoe. Kinetic and kinematic data were used in combination with a static optimization technique to estimate individual muscle forces. These data were inserted into a patellofemoral joint model which was used to estimate patellofemoral joint stress and other variables during running. When running with heel lifts, peak patellofemoral joint stress and patellofemoral stress impulse were reduced by a 4.2% (p=0.049) and 9.3% (p=0.002). Initial center of pressure was shifted anteriorly 9.1% when running with heel lifts (p0.05) were shown between conditions. Heel lift use resulted in decreased patellofemoral joint stress and impulse without associated changes in step length or frequency, or other variables shown to influence patellofemoral joint stress. The center of pressure at initial contact was also more anterior using heel lifts. The use of heel lifts may have therapeutic benefits for runners with patellofemoral pain if the primary goal is to reduce patellofemoral joint stress. 3b.

  16. Searching for ski-lift injury: an uphill struggle?

    Science.gov (United States)

    Smartt, Pam; Chalmers, David

    2010-03-01

    Injuries arising from ski-lift malfunction are rare. Most arise from skier error when embarking or disembarking, or from improper lift operation. A search of the literature failed to uncover any studies focusing specifically on ski-lift injuries. The purpose of this study was to identify and characterise ski-lift injury resulting in hospitalisation and comment on barriers to reporting and reporting omissions. New Zealand hospitalised injury discharges 2000-2005 formed the primary dataset. To aid case identification these data were linked to ACC compensated claims for the same period and the data searched for all hospitalised cases of injury arising from ski-lifts. 44 cases were identified representing 2% of snow-skiing/snowboarding cases. 28 cases (64%) were male and 16 (36%) female, the average age was 32 yrs (range 5-73 yrs). The majority of cases were snow-skiers (35 cases, 80%). Most of the injuries were serious, or potentially so, with 1 case of traumatic pneumothorax, one of pulmonary embolism (after jumping from a ski-lift) and 28 cases sustaining fractures (six to the neck-of-femur, one to the lumbar spine and one to the pubis). ICISS scores for all cases ranged from 1.00 to 0.8182 (probability of dying in hospital 0-18.18%). Only 14 (32%) cases could be easily identified from ICD-10-AM e-codes and activity codes in the discharge summary. The ICD-10-AM external cause code for ski-lift injury V98 ("other specified transport accidents") was only assigned to 39% of cases. The type of ski-lift could only be determined in 24 cases (55%). Copyright 2009 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

  17. Managing cultural diversity in healthcare partnerships: the case of LIFT.

    Science.gov (United States)

    Mannion, Russell; Brown, Sally; Beck, Matthias; Lunt, Neil

    2011-01-01

    The National Health Service (NHS) Local Improvement Finance Trust (LIFT) programme was launched in 2001 as an innovative public-private partnership to address the historical under-investment in local primary care facilities in England. The organisations from the public and private sector that comprise a local LIFT partnership each have their own distinctive norms of behaviour and acceptable working practices - ultimately different organisational cultures. The purpose of this article is to assess the role of organisational culture in facilitating (or impeding) LIFT partnerships and to contribute to an understanding of how cultural diversity in public-private partnerships is managed at the local level. The approach taken was qualitative case studies, with data gathering comprising interviews and a review of background documentation in three LIFT companies purposefully sampled to represent a range of background factors. Elite interviews were also conducted with senior policy makers responsible for implementing LIFT policy at the national level. Interpreting the data against a conceptual framework designed to assess approaches to managing strategic alliances, the authors identified a number of key differences in the values, working practices and cultures in public and private organisations that influenced the quality of joint working. On the whole, however, partners in the three LIFT companies appeared to be working well together, with neither side dominating the development of strategy. Differences in culture were being managed and accommodated as partnerships matured. As LIFT develops and becomes the primary source of investment for managing, developing and channelling funding into regenerating the primary care infrastructure, further longitudinal work might examine how ongoing partnerships are working, and how changes in the cultures of public and private partners impact upon wider relationships within local health economies and shape the delivery of patient care

  18. Fluid Mechanical Aspects of the Gas-Lift Technique

    Science.gov (United States)

    Guet, S.; Ooms, G.

    2006-01-01

    The gas-lift technique comprises the injection of gas bubbles in vertical oil wells to increase production. It is based on a reduction of the tubing gravitational pressure gradient. Several fluid-flow phenomena influencing such vertical gas-liquid flows are discussed. These effects include the radial distribution of void fraction and of gas and liquid velocity, flow regime changes, and system stability problems. Associated consequences for gas-lift performance and related optimization approaches are also discussed.

  19. The effects of lifting posture on trunk muscle activity

    Energy Technology Data Exchange (ETDEWEB)

    Hamrick, C.A.; Gallagher, S.

    1992-12-31

    A study was conducted to examine the effects of posture on lifting of boxes of 3 different weights to 2 different heights. The subjects partaking were males with coal mining experience. Peak EMG was measured for each trunk muscle. It was found that muscle activity during lifting is affected by posture of the worker. It is suggested that current guidelines may not applicable to working in restricted postures. 7 refs.

  20. Morphing morphing faces

    NARCIS (Netherlands)

    Lier, R.J. van

    2009-01-01

    We have made cyclic morphing animations using two different faces. The morphing animations gradually evolved from one face to the other, and vice versa. When free viewing, the perceived changes were not very large, but the changes could easily be observed. Observers were asked to fixate on a dot

  1. Motor of Lift RSG-GAS Performance Analysis after Repair

    International Nuclear Information System (INIS)

    Asep-Saepuloh; Yayan-Andriyanto; Yuyut-Suraniyanto

    2006-01-01

    The out of order an equipment is ordinary natural process happened, above all the equipment be used continually with very old time, as for as out of order can be resulted from kinds of cause. Lift motor out of order can be result by motor is broken or happened the body shorten then affected do not function it the lift, so until done rewinding process. The rewinding is furl to repeat at motor coils. Motor of Lift represent main activator machine turning around shares pulley. Lift Motor will work if there is called in normal operation condition or the moment manual switch if done maintenance. Motor used at lift is motor three phases with two speeds that is low speed and high speed. Rewinding process must be done removed the motor from Lift machine and have to be done by professional workshop. In during function test take place, temperature at coil reach 70 o C (exceeding boundary permitted). After done installation addition thermal at motor coil hence his temperature become normal that is only reach 50 o C. (author)

  2. Common path endoscopic probes for optical coherence tomography (Conference Presentation)

    Science.gov (United States)

    Singh, Kanwarpal; Gardecki, Joseph A.; Tearney, Guillermo J.

    2017-02-01

    Background: Dispersion imbalance and polarization mismatch between the reference and sample arm signals can lead to image quality degradation in optical coherence tomography (OCT). One approach to reduce these image artifacts is to employ a common-path geometry in fiber-based probes. In this work, we report an 800 um diameter all-fiber common-path monolithic probe for coronary artery imaging where the reference signal is generated using an inline fiber partial reflector. Methods: Our common-path probe was designed for swept-source based Fourier domain OCT at 1310 nm wavelength. A face of a coreless fiber was coated with gold and spliced to a standard SMF-28 single mode fiber creating an inline partial reflector, which acted as a reference surface. The other face of the coreless fiber was shaped into a ball lens for focusing. The optical elements were assembled within a 560 µm diameter drive shaft, which was attached to a rotary junction. The drive shaft was placed inside a transparent sheath having an outer diameter of 800 µm. Results: With a source input power of 30mW, the inline common-path probe achieved a sensitivity of 104 dB. Images of human finger skin showed the characteristic layers of skin as well as features such as sweat ducts. Images of coronary arteries ex vivo obtained with this probe enabled visualization of the characteristic architectural morphology of the normal artery wall and known features of atherosclerotic plaque. Conclusion: In this work, we have demonstrated a common path OCT probe for cardiovascular imaging. The probe is easy to fabricate, will reduce system complexity and overall cost. We believe that this design will be helpful in endoscopic applications that require high resolution and a compact form factor.

  3. Capacitive facial movement detection for human-computer interaction to click by frowning and lifting eyebrows: assistive technology.

    Science.gov (United States)

    Rantanen, Ville; Niemenlehto, Pekka-Henrik; Verho, Jarmo; Lekkala, Jukka

    2010-01-01

    A capacitive facial movement detection method designed for human-computer interaction is presented. Some point-and-click interfaces use facial electromyography for clicking. The presented method provides a contactless alternative. Electrodes with no galvanic coupling to the face are used to form electric fields. Changes in the electric fields due to facial movements are detected by measuring capacitances between the electrodes. A prototype device for measuring a capacitance signal affected by frowning and lifting eyebrows was constructed. A commercial integrated circuit for capacitive touch sensors is used in the measurement. The applied movement detection algorithm uses an adaptive approach to provide operation capability in noisy and dynamic environments. Experimentation with 10 test subjects proved that, under controlled circumstances, the movements are detected with good efficiency, but characterizing the movements into frowns and eyebrow lifts is more problematic. Integration with a two-dimensional (2D) pointing solution and further experiments are still required.

  4. Aerodynamic Interference between Oscillating Lifting Surfaces and Fuselage Part 5: A Panel Method for Non-Lifting Bodies

    Directory of Open Access Journals (Sweden)

    Valentin Adrian Jean BUTOESCU

    2015-09-01

    Full Text Available In the fifth article of our series we will deal with the calculation of the unsteady aerodynamic forces on non-lifting bodies. We present here a contribution to the problem of the flow about non-lifting bodies. It is a panel method available for subsonic unsteady flow. The method will be used further to the unsteady body-body and wing-body interference problems.

  5. Significance of endoscopic screening and endoscopic resection for esophageal cancer in patients with hypopharyngeal cancer

    International Nuclear Information System (INIS)

    Morimoto, Masahiro; Nishiyama, Kinji; Nakamura, Satoaki

    2010-01-01

    The efficacy of endoscopic screening for esophageal cancer in patients with hypopharyngeal cancer remains controversial and its impact on prognosis has not been adequately discussed. We studied the use of endoscopic screening to detect esophageal cancer in hypopharyngeal cancer patients by analyzing the incidence, stage and prognosis. We included 64 patients with hypopharyngeal cancer who received radical radiotherapy at our institute. Chromoendoscopic esophageal examinations with Lugol dye solution were routinely performed at and after treatment for hypopharyngeal cancer. Twenty-eight esophageal cancers were detected in 28 (41%) patients (18 synchronous and 10 metachronous cancers). Of the 28 cancers, 23 were stage 0 or I cancer and 15 of these were treated with endoscopic resection. Local control was achieved in all of these 23 stage 0 or I cancers. The 5-year overall survival rates with esophageal cancer were 83% in stage 0, 47% in stage I and 0% in stage IIA-IVB. This study showed a strikingly high incidence of esophageal cancer in hypopharyngeal cancer patients. We suppose that the combination of early detection by chromoendoscopic examination and endoscopic resection for associated esophageal cancer in hypopharyngeal cancer patients improve prognosis and maintain quality of life. (author)

  6. Endoscopic papillary balloon dilatation versus endoscopic sphincterotomy in the treatment for choledocholithiasis: a meta-analysis.

    Science.gov (United States)

    Liu, Yangyang; Su, Peizhu; Lin, Siheng; Xiao, Kun; Chen, Pingyan; An, Shengli; Zhi, Fachao; Bai, Yang

    2012-03-01

    Endoscopic papillary balloon dilatation (EPBD) and endoscopic sphincterotomy (EST) are two common nonsurgical treatments endoscopic retrograde cholangiopancreatography (ERCP) for choledocholithiasis. The aim of this study was to compare the efficacy and safety of EPBD and EST in the treatment for choledocholithiasis, confining the analysis to work reported in the last decade. The rate of overall postoperative complications was chosen as the primary outcome, and 10 other outcomes were secondary outcomes. Relative risk (RR) or Peto odds ratio (OR) were computed as the measures of pooled effects. We planned sensitivity analyses a priori for examining the change in robustness of the sensitivity to excluding studies with some inappropriate objects, technique defects or without full-text acquisition. For complete stone removal, EPBD was similar to EST (95% vs. 96%, P = 0.36) and overall postoperative complications (14.0% vs. 11.7%, P = 0.53). The incidence of post-ERCP cholangitis (2.5% vs. 1.8%, P = 0.40), basket impaction (0.9% vs. 0%, P = 0.16) and perforation (0.0% vs. 0.4%, P = 0.17) were equivalent between EPBD and EST. On the other hand, EPBD caused more post-ERCP pancreatitis (PEP) (9.4% vs. 3.3%, P stone extraction, though it requires more endoscopic mechanical lithotripsy (EML). EPBD may outweigh EST for patients with coagulopathy; however, it may cause more PEP. © 2011 Journal of Gastroenterology and Hepatology Foundation and Blackwell Publishing Asia Pty Ltd.

  7. Effects of a new industrial lifting belt on back muscular activity, hand force, and body stability during symmetric lifting.

    Science.gov (United States)

    Chen, Hung Jui; Lin, Chiuhsiang Joe; Huang, Cheng Long

    2006-07-01

    This work investigated how wearing a new design of back belt affects erector spinae activity, hand force, and body stability. The belt was first tested with static holding tasks and found to significantly decrease the back muscle activity. Actual lifting tasks were further carried out to test the effect of the belt. Ten male subjects performed a symmetric lifting task of low-lying loads (11 and 16 kg) at natural toting velocity, using either a squat or stoop lifting posture, both with and without a belt. The study measured various independent variables using electromyography (EMG), load cells, and motion capture device. The results demonstrated that the belt reduced the load on the erector spinae, as well as the triceps brachii and biceps brachii. The overall mean values of the peak (hand) force did not appear significantly affected while wearing the belt, but the force peaks appeared postponed. The belt did not alter body stability while lifting. From the present findings, the belt effectively changed the force distribution during lifting, at least reducing the muscle load on the back. The belt may be a potentially useful device for symmetric industrial lifting tasks.

  8. Endoscopic lesions in Crohn's disease early after ileocecal resection

    NARCIS (Netherlands)

    Tytgat, G. N.; Mulder, C. J.; Brummelkamp, W. H.

    1988-01-01

    Fifty patients with Crohn's disease were studied endoscopically 6 weeks to 6 months (median 9 weeks) after ileocecal or ileocolonic resection for evidence of non-resected abnormality. Only 8 of the 50 patients were endoscopically free of abnormalities. Microscopic examination of the surgical

  9. Correlation between Endoscopic and Histological Gastritis in South ...

    African Journals Online (AJOL)

    Background: Inflammation of the gastric mucosa is a common finding in the general population. It is also common in clinical practice for Endoscopists to make an impression of gastritis on the basis of the general endoscopic appearance of the gastric mucosa. This concept of “endoscopic gastritis” was further given credibility ...

  10. Endoscopic Camera Control by Head Movements for Thoracic Surgery

    NARCIS (Netherlands)

    Reilink, Rob; de Bruin, Gart; Franken, M.C.J.; Mariani, Massimo A.; Misra, Sarthak; Stramigioli, Stefano

    2010-01-01

    In current video-assisted thoracic surgery, the endoscopic camera is operated by an assistant of the surgeon, which has several disadvantages. This paper describes a system which enables the surgeon to control the endoscopic camera without the help of an assistant. The system is controlled using

  11. Endoscopic capacity in West Africa | Perl | African Health Sciences

    African Journals Online (AJOL)

    Background: Levels of endoscopic demand and capacity in West Africa are unclear. Objectives: This paper aims to: 1. describe the current labor and endoscopic capacity, 2. quantify the impact of a mixed-methods endoscopy course on healthcare professionals in West Africa, and 3. quantify the types of diagnoses ...

  12. Endoscopic treatment of pancreatic stones in patients with chronic pancreatitis

    NARCIS (Netherlands)

    Smits, M. E.; Rauws, E. A.; Tytgat, G. N.; Huibregtse, K.

    1996-01-01

    The aim of our study was to evaluate the long-term results of endoscopic pancreatic stone removal in patients with chronic pancreatitis. We retrospectively included 53 patients with chronic pancreatitis, in whom an attempt was made at endoscopic stone removal between 1984 and 1993. Patients

  13. Is endoscopic nodular gastritis associated with premalignant lesions?

    Science.gov (United States)

    Niknam, R; Manafi, A; Maghbool, M; Kouhpayeh, A; Mahmoudi, L

    2015-06-01

    Nodularity on the gastric mucosa is occasionally seen in general practice. There is no consensus about the association of nodular gastritis and histological premalignant lesions. This study is designed to investigate the prevalence of histological premalignant lesions in dyspeptic patients with endoscopic nodular gastritis. Consecutive patients with endoscopic nodular gastritis were compared with an age- and sex-matched control group. Endoscopic nodular gastritis was defined as a miliary nodular appearance of the gastric mucosa on endoscopy. Biopsy samples of stomach tissue were examined for the presence of atrophic gastritis, intestinal metaplasia, and dysplasia. The presence of Helicobacter pylori infection was determined by histology. From 5366 evaluated patients, a total of 273 patients with endoscopic nodular gastritis and 1103 participants as control group were enrolled. H. pylori infection was detected in 87.5% of the patients with endoscopic nodular gastritis, whereas 73.8% of the control group were positive for H. pylori (p gastritis were significantly higher than in the control group. Prevalence of atrophic gastritis and complete intestinal metaplasia were also more frequent in patients with endoscopic nodular gastritis than in the control group. Dysplasia, incomplete intestinal metaplasia and H. pylori infection are significantly more frequent in patients with endoscopic nodular gastritis. Although further studies are needed before a clear conclusion can be reached, we suggest that endoscopic nodular gastritis might serve as a premalignant lesion and could be biopsied in all patients for the possibility of histological premalignancy, in addition to H. pylori infection.

  14. Endoscopic Perforation Rates at a Canadian University Teaching Hospital

    Directory of Open Access Journals (Sweden)

    Tarun Misra

    2004-01-01

    Full Text Available BACKGROUND: Despite advances in training, operative techniques and endoscopic technology, upper and lower endoscopic procedures continue to have potential for intestinal perforation. Perforation rates provided to patients at the time of consent have frequently been derived from historical cohorts and survey datasets.

  15. Endoscopic Lung Volume Reduction : An Expert Panel Recommendation - Update 2017

    NARCIS (Netherlands)

    Herth, Felix J. F.; Slebos, Dirk-Jan; Criner, Gerard J.; Shah, Pallav L.

    2017-01-01

    Interest in endoscopic lung volume reduction (ELVR) technologies for emphysema is consistently growing. In the last couple of months, several endoscopic options (e.g., endo-or intrabronchial valves, coil implants, and thermal vapor ablation) that have been evaluated in randomized controlled trials

  16. A novel multipurpose modular mini-endoscope for otology.

    Science.gov (United States)

    Bozzato, Alessandro; Bozzato, Victoria; Al Kadah, Basel; Schick, Bernhard

    2014-12-01

    Transtympanic access to the round window membrane (RWM) for drug delivery is in the focus of otology and has stimulated development of various endoscopes. These endoscopes are tasked to enable best visualization at a low diameter and to offer a working channel for various instruments. The specific aspect of sterilization is a major issue especially in regard to the diameter of the endoscope with its integrated working channel. We evaluated a new multi-purpose modular semi-rigid optical fiber endoscope (10,000 pixel resolution) for minimal invasive middle ear endoscopy focusing on access to the RWM and micro instruments in 12 cadaver specimens. Microscopic visualization was compared to endoscopy. With the modular mini ear endoscope (MMEE) we were able to visualize the RWM in 3 specimens directly and in 8 specimens after removal of a mucous membrane using micro instruments. A bony overhang prevented visualization of the RWM in one case. The endoscope enabled minimal invasive RWM access initially in a higher number of cases compared to microscope investigation. The designed MMEE is suited to access transtympanic the round window membrane even in situations of an obstructed round window niche. The modular concept of the endoscope is attractive for different types of indications, various instruments and with regard to the aspects of sterilization. Experiences in humans are the next necessary step to define the possible role of this endoscope in otology.

  17. The clinical and endoscopic spectrum of the watermelon stomach

    NARCIS (Netherlands)

    Gostout, C. J.; Viggiano, T. R.; Ahlquist, D. A.; Wang, K. K.; Larson, M. V.; Balm, R.

    1992-01-01

    The watermelon stomach is an uncommon but treatable cause of chronic gastrointestinal bleeding. We report our experience with the clinical and endoscopic features of 45 consecutive patients treated by endoscopic Nd:YAG laser coagulation. The prototypic patient was a woman (71%) with an average age

  18. Spectrum of Endoscopic Findings in Nigerians with Dyspepsia ...

    African Journals Online (AJOL)

    There are differing information on the commonest endoscopic findings in patients with dyspepsia from Nigeria. Objective: The aim of this study was to determine the spectrum of endoscopic findings in patients with dyspepsia. Patients and Methods: This is a hospital-based prospective study carried out at the Endoscopy Unit ...

  19. Endoscopic retreatment of recurrent choledocholithiasis after sphincterotomy

    Science.gov (United States)

    Sugiyama, M; Suzuki, Y; Abe, N; Masaki, T; Mori, T; Atomi, Y

    2004-01-01

    Background: Endoscopic sphincterotomy (ES) carries a substantial risk of recurrent choledocholithiasis but retreatment with endoscopic retrograde cholangiopancreatography (ERCP) is safe and feasible. However, long term results of repeat ERCP and risk factors for late complications are largely unknown. Aims: To investigate the long term outcome of repeat ERCP for recurrent bile duct stones after ES and to identify risk factors predicting late choledochal complications. Methods: Eighty four patients underwent repeat ERCP, combined with ES in 69, for post-ES recurrent choledocholithiasis. Long term outcomes of repeat ERCP were retrospectively investigated and factors predicting late complications were assessed by multivariate analysis. Results: Complete stone clearance was achieved in all patients. Forty nine patients had no visible evidence of prior sphincterotomy. Two patients experienced early complications. During a follow up period of 2.2–26.0 years (median 10.9 years), 31 patients (37%) developed late complications, including stone recurrence (n = 26), acute acalculous cholangitis(n = 4), and acute cholecystitis (n = 1). There were neither biliary malignancies nor deaths attributable to biliary disease. Multivariate analysis identified three independent risk factors for choledochal complications: interval between initial ES and repeat ERCP ⩽5 years, bile duct diameter ⩾15 mm, and periampullary diverticulum. Choledochal complications were successfully treated with repeat ERCP in 29 patients. Conclusions: Choledochal complications after repeat ERCP are relatively frequent but are endoscopically manageable. Careful follow up is necessary, particularly for patients with a dilated bile duct, periampullary diverticulum, or early recurrence. Repeat ERCP is a reasonable treatment even for recurrent choledocholithiasis after ES. PMID:15542528

  20. [Endoscopic ventriculocisternostomy complications in 108 hydrocephalic patients].

    Science.gov (United States)

    Alonso-Fernández, Luis; Leyva-Mastrapa, Tania; deJongh-Cobo, Enrique; Díaz-Alvarez, Manuel; Quintana-Pajon, Ingrid; Osuna, Irene Barrios; Morera-Pérez, Maricela

    2015-01-01

    Several reports have been published in relation to complications, sometimes fatal, associated to endoscopic ventriculocisternostomy (EVC). The objective of this study was to determine the range of complications using this surgical technique in a series of 108 patients. A retrospective and descriptive study was performed on 108 hydrocephalic patients: 76 children and 32 adults. All of them presented various forms of obstructive hydrocephalus. In a total of 108 patients, 114 EVC were performed. The follow-up period ranged between 6 months and 10 years (mean 6.8 years). Age of patients ranged from 6 days to 75 years old (mean 18 years). Aqueductal stenosis was the most common aetiology, with 62 patients (57.4%). Significant complications occurred in 10 patients (9.2%). During the course of the study, the complication rate dropped significantly. No patient died because of the procedure (mortality 0%). We applied the Endoscopic Third Ventriculostomy Success Score (ETVSS) developed by Kulkarni and collaborators to our series to know if this score could be useful in predicting ETV results. Like all minimally-invasive techniques, there is a steep learning curve for EVC. Correct patient selection and surgeon experience (which means not only familiarity with endoscopic techniques but also the performance of a minimum number of surgeries per year) are very important to avoid complications. The ETV Success Score devised closely approximates the predicted probability of ETV success. Copyright © 2014 Sociedad Española de Neurocirugía. Published by Elsevier España. All rights reserved.

  1. Limited Approach in Endoscopic Dacryocystorhinostomy of Pediatrics

    Directory of Open Access Journals (Sweden)

    Seyyed Mostafa Hashemi

    2017-01-01

    Full Text Available Background: Limited spatial nasal cavity in children, make pediatric dacryocystorhinostomy (DCR a difficult surgical procedure. We apply a limited approach to pediatric DCR and follow them for their consequences. Materials and Methods: An experimental study was done in pediatric DCR with limited approach (age < 14-year-old. After written consent, with general anesthesia, with nasal endoscopic surgery, lacrimal bone is exposed and extruded. In contrast with routine procedure, ascending process of maxillary sinus reserve; and marsupialization and wide exposure to lacrimal sac was done only by lacrimal bone defect; and cannulation preserve with temporary silicone tube. Results: Between 2006 and 2012, 16 pediatric DCR was done by a unique surgeon in 2 otorhinolaryngologic centers. Before surgery 14 (87.5% had epiphora, 3 (18.8% had eye discharge, and 3 (18.8% had eye sticky eye. Two (12.5% had history of facial trauma, and 10 (62.5% had congenital nasolacrimal duct insufficiency. Five (31.3% had history of dacryocystitis. Patients were followed for 17 ± 9 months. Silicone tube stayed for 4 ± 2.5 months. We could follow 7 patients and minimal improvement or need to revision surgery considered as technical failure. After surgery, 3 patients had no epiphora with complete improvement; 2 had very good improvement with confidence of the patients and parents; 2 cases had unsuccessful surgery in our patients, who needs to another surgery. One of them had several probing and surgery before our endoscopic DCR. Conclusions: Limited approach in endoscopic DCR of pediatrics can be done in noncomplicated patients, with minimal manipulation, more confidence, and acceptable results.

  2. Endoscopic management of pancreatic duct injury by endoscopic stent placement: a case report and literature review

    Directory of Open Access Journals (Sweden)

    Ito Yasuhiro

    2012-07-01

    Full Text Available Abstract Recently, the diagnostic evaluation of pancreatic injury has improved dramatically. On the other hand, it is occasionally difficult to diagnose pancreatic injury, because there are no specific signs, symptoms, or laboratory findings. Radiological imaging also often fails to identify pancreatic injury in the acute phase. Delayed diagnosis results in significant morbidity and mortality. Most cases of pancreatic injury with suspicion or pancreatic duct disruption require surgery. Endoscopic retrograde cholangiopancreatography is one of the most accurate modalities for ductal evaluation and therapy and might enable one to avoid unnecessary surgery. We describe endoscopic management of pancreatic duct injury by endoscopic stent placement. A 45-year-old woman was admitted after a traffic accident. A computed tomography scan showed pancreatic parenchyma disruption at the pancreatic head. Endoscopic retrograde cholangiopancreatography demonstrated disruption of the pancreatic duct with extravasation into the peripancreatic fluid collection. A 5-French endoscopic nasopancreatic drainage (ENPD tube was placed. Her symptoms dramatically improved. ENPD tube was exchanged for a 5-French 5-cm pancreatic stent. Subsequent follow-up CT revealed remarkable improvement. On the 26th day, the patient was discharged from the hospital without symptoms or complications. In this report, a pancreatic stent may lead to rapid clinical improvement and enable surgery to be avoided. On the other hand, the reported complications of long-term follow-up make the role of stenting uncertain. Thus, close attention should be paid to stenting management in the follow-up period. A pancreatic stent is useful for pancreatic ductal injury. If pancreatic ductal injury is managed appropriately, a pancreatic stent may improve the clinical condition, and also prevent unnecessary surgery.

  3. Telehealth is Face-to-Face Service Delivery

    OpenAIRE

    CASON, JANA

    2017-01-01

    The Commentary contests the increasingly outdated and narrow use of the terminology ?face-to-face? (often abbreviated as F2F) to connote clinical interactions in which both the client and the practitioner are physically present in the same room or space. An expanded definition is necessary because when delivered synchronously via videoconferencing, telehealth also provides face-to-face services (i.e., the practitioner and the client view each other?s faces). Terminology that uses face-to-face...

  4. Training and assessment in functional endoscopic sinus surgery.

    Science.gov (United States)

    Chan, M; Carrie, S

    2018-02-01

    Functional endoscopic sinus surgery is a common procedure performed within otolaryngology, but it carries potential for significant life-changing complications. It is therefore essential that trainees undergo adequate training. The European Working Time Directive has led to reduced operating time for the trainee surgeon. With variable access and the cost implications associated with cadaveric specimens, simulation can be an invaluable educational resource in surgical training. The current literature regarding the various simulation methodologies that have been used in functional endoscopic sinus surgery training is discussed. A literature search was conducted using the key words 'nasal', 'nasal polyps', 'endoscope', 'education and simulation', 'endoscopic sinus surgery' and 'training'. Twelve articles were identified; of these, eight trialled the use of simulators, two utilised ovine models and two used task trainers. Simulation has shown benefit in functional endoscopic sinus surgery training; however, a robust platform accessible to ENT trainees is lacking.

  5. [Endoscopic treatment of bleeding due to Mallory-Weiss syndrome].

    Science.gov (United States)

    Pantsyrev, Iu M; Fedorov, E D; Timofeev, M E; Mikhalev, A I

    2003-01-01

    Experience in diagnosis and treatment of 276 patients with Mallory--Weiss syndrome (MWS) is presented. Definition of the syndrome and brief historical review (from first description of disruption of esophageal-gastric connection to first report of successful hemostasis through endoscope) are given. Particular attention is devoted to etiology and pathogenesis of this syndrome. Clinical material and picture of disease, results of endoscopic diagnosis are analyzed, efficacy of endoscopic hemostasis and prophylaxis of hemorrhage is demonstrated. Indications to various methods of endoscopic hemostasis are regarded, results of treatment and lethal outcomes are analyzed. It is demonstrated that endoscopic procedures are the method of choice in the treatment of this disease reducing emergency surgery rate to 0.4%.

  6. Endoscopic resection of advanced and laterally spreading duodenal papillary tumors.

    Science.gov (United States)

    Klein, Amir; Tutticci, Nicholas; Bourke, Michael J

    2016-03-01

    Historically, neoplasia of the duodenal papilla has been managed surgically, which may be associated with substantial morbidity and mortality. In the absence of invasive cancer, even lesions with extensive lateral duodenal wall involvement, or limited intraductal extension may be cured endoscopically with a superior safety profile. Endoscopic papillectomy is associated with greater risks of adverse events such as bleeding than resection elsewhere in the gastrointestinal tract. Additionally site-specific complications such as pancreatitis exist. A structured approach to lesion assessment, adherence to technical aspects of resection, endoscopic management of complications and post-resection surveillance is required. Advances have been made in all facets of endoscopic papillary resection since its introduction in the 1980s; extending the boundaries of endoscopic cure, optimizing outcomes and enhancing patient safety. These will be the focus of the present review. © 2015 Japan Gastroenterological Endoscopy Society.

  7. Manual materials handling in mining: the effect of rod heights and foot positions when lifting "in-the-hole" drill rods.

    Science.gov (United States)

    Plamondon, André; Delisle, Alain; Trimble, Karin; Desjardins, Pierre; Rickwood, Trevor

    2006-11-01

    There is a paucity of studies focusing on the lifting of rods or long awkward heavy objects. In-the-hole (ITH) drilling is a heavy repetitive mining task, which has been identified as having a relatively high incidence and severity rate of musculoskeletal injuries. The purpose of this study was to examine how the load experienced by ITH drill operators changed when lifting a vertical drilling rod (1.61m, 35kg) using two rod heights and four different foot positions. In addition, a symmetrical lift with a lifting index (LI) of 1.4 also served as a comparison to determine possible risk of low back injury. Eleven experienced ITH drill operators participated in the study. Each subject was required to lift a vertical drilling rod until the upper body was in an erect posture using four different foot positions (0 degrees =subject facing the rod, 45 degrees =subject oblique to the rod, 90 degrees =subject right side to the rod and freestyle). In addition, two rod height conditions were studied where the base of the vertical rod was supported either (1) at ground level (height of rod CG=0.83m) or (2) on a 20cm rack (height of rod CG=1.03m). Finally, each subject lifted a 21.5kg box in the sagittal plane, which corresponded to an LI of 1.4 in the NIOSH lifting equation. Reflective markers were placed on the subjects, and three video cameras and one force plate were used to record the forces and the motion of the subjects' segments. Two surface electrodes were applied on the right and the left erector spinae (ES) at the level of L3. Back loading was defined by the level of the peak moments, the mechanical work and erector spinae muscle activity (EMG). It was found that the vertical height of the rod had the most significant impact on back loading, while the effect of the initial foot positioning relative to the rod was limited by the technique adopted by the drillers. Moreover, it was found that some of the subjects used techniques less strenuous for the back than others

  8. Endoscopic Management of Osgood-Schlatter Disease.

    Science.gov (United States)

    Lui, Tun Hing

    2016-02-01

    Osgood-Schlatter disease is a common cause of anterior knee pain in sports-practicing adolescents. The long-term outcomes have not always been favorable, and some adolescents have persisting knee pain into adulthood. Excision of the ossicle together with debridement of the tibial tuberosity is indicated if the pain is not relieved with conservative measures. An endoscopic technique for excision of the ossicle associated with Osgood-Schlatter disease is reported. It has the advantages of avoidance of painful surgical scars and preservation of the integrity of the patellar tendon, with the potential for improved cosmetic and functional results.

  9. Endoscopic Treatment of Studer's Orthotopic Neobladder Lithiasis

    Directory of Open Access Journals (Sweden)

    Diogo Gil-Sousa

    2015-05-01

    Full Text Available Studer's neobladder lithiasis is a rare but important long term complication of this orthotopic bladder substitute technique. We report a case of a 45 year-old male patient, submitted to a radical cystoprostatectomy with a Studer's orthotopic neobladder 4 years before, presenting bad compliance to recommended urinary habits, increased production of mucus and high post voiding residue. CT scan and urethrocystography showed a distended pouch with 2 major sacculations with narrow communication and a stone in each sacculation. A minimally invasive endoscopic technique was successfully used in the treatment of the 2 small calculus.

  10. Visceral Arterial Aneurysms Complicating Endoscopic Retrograde Cholangiopancreatography

    Directory of Open Access Journals (Sweden)

    Vinaya Gaduputi

    2013-01-01

    Full Text Available We report this case of a 74-year-old man with altered anatomy secondary to Billroth-II surgery who underwent endoscopic retrograde cholangiopancreatography (ERCP for choledocholithiasis and subsequently developed severe diffuse abdominal pain with drop in hemoglobin. Patient was found to have hemorrhagic shock requiring aggressive resuscitative measures. Patient was found to have large peripancreatic hematoma secondary to bleeding from gastroduodenal and superior pancreaticoduodenal artery pseudoaneurysms. Gastroduodenal artery aneurysm is the rarest of all the splanchnic artery aneurysms, and to our knowledge this is the only reported case of a gastroduodenal artery pseudoaneurysm complicating ERCP.

  11. Endoscopic Treatment of Studer's Orthotopic Neobladder Lithiasis.

    Science.gov (United States)

    Gil-Sousa, Diogo; Oliveira-Reis, Daniel; Cavadas, Vitor; Oliveira, Manuel; Soares, José; Fraga, Avelino

    2015-05-01

    Studer's neobladder lithiasis is a rare but important long term complication of this orthotopic bladder substitute technique. We report a case of a 45 year-old male patient, submitted to a radical cystoprostatectomy with a Studer's orthotopic neobladder 4 years before, presenting bad compliance to recommended urinary habits, increased production of mucus and high post voiding residue. CT scan and urethrocystography showed a distended pouch with 2 major sacculations with narrow communication and a stone in each sacculation. A minimally invasive endoscopic technique was successfully used in the treatment of the 2 small calculus.

  12. Endoscopic and robotic thyroidectomy: past and future.

    Science.gov (United States)

    Terris, D J

    2009-08-01

    After nearly a century of performing a thyroid-ectomy essentially the way it was described by Theodore Kocher in the nineteenth century, the technique has suddenly and rapidly evolved. It can now be accomplished endoscopically in many patients who therefore benefit from the reduced dissection and smaller incisions associated with the approach. While many of the cosmetic, quality of life, and functional improvements have now been documented, an improved understanding of the procedure and the appropriate indications for its application will continue to develop even as the technique itself evolves, and as new approaches emerge.

  13. A primer on endoscopic electronic medical records.

    Science.gov (United States)

    Atreja, Ashish; Rizk, Maged; Gurland, Brooke

    2010-02-01

    Endoscopic electronic medical record systems (EEMRs) are now increasingly utilized in many endoscopy centers. Modern EEMRs not only support endoscopy report generation, but often include features such as practice management tools, image and video clip management, inventory management, e-faxes to referring physicians, and database support to measure quality and patient outcomes. There are many existing software vendors offering EEMRs, and choosing a software vendor can be time consuming and confusing. The goal of this article is inform the readers about current functionalities available in modern EEMR and provide them with a framework necessary to find an EEMR that is best fit for their practice.

  14. Image acquisition in laparoscopic and endoscopic surgery

    Science.gov (United States)

    Gill, Brijesh S.; Georgeson, Keith E.; Hardin, William D., Jr.

    1995-04-01

    Laparoscopic and endoscopic surgery rely uniquely on high quality display of acquired images, but a multitude of problems plague the researcher who attempts to reproduce such images for educational purposes. Some of these are intrinsic limitations of current laparoscopic/endoscopic visualization systems, while others are artifacts solely of the process used to acquire and reproduce such images. Whatever the genesis of these problems, a glance at current literature will reveal the extent to which endoscopy suffers from an inability to reproduce what the surgeon sees during a procedure. The major intrinsic limitation to the acquisition of high-quality still images from laparoscopic procedures lies in the inability to couple directly a camera to the laparoscope. While many systems have this capability, this is useful mostly for otolaryngologists, who do not maintain a sterile field around their scopes. For procedures in which a sterile field must be maintained, one trial method has been to use a beam splitter to send light both to the still camera and the digital video camera. This is no solution, however, since this results in low quality still images as well as a degradation of the image that the surgeon must use to operate, something no surgeon tolerates lightly. Researchers thus must currently rely on other methods for producing images from a laparoscopic procedure. Most manufacturers provide an optional slide or print maker that provides a hardcopy output from the processed composite video signal. The results achieved from such devices are marginal, to say the least. This leaves only one avenue for possible image production, the videotape record of an endoscopic or laparoscopic operation. Video frame grabbing is at least a problem to which industry has applied considerable time and effort to solving. Our own experience with computerized enhancement of videotape frames has been very promising. Computer enhancement allows the researcher to correct several of the

  15. Human muscular and postural responses in unstable load lifting.

    Science.gov (United States)

    Lee, Yung-Hui; Lee, Tzu-Hsien

    2002-09-01

    Most studies of manual material handling have focused on stable (fixed) loads. The muscular response during unstable load handling deserves more investigative attention. To investigate muscular and postural responses during unstable load lifting, and to quantify the threat posed by such loads in the workplace. Accurate assessment of load weight is important for lifters. Unfortunately, this information is not always available to individuals handling containers of liquids or shifting loads, or those encountering impact loading or a sudden unexpected load. In this study, 12 subjects were subjected to time-variant loads, in which a box weighing 18 kg was used to generate a sudden 12 (kg. m)/second load impact internally during the lifting process. Responses were investigated as a function of different load-shift conditions (anterior-to-posterior and posterior-to-anterior rolling loads and stable load), two foot placements (wide and narrow stance), and two lifting techniques (stoop and squat). Normalized electromyography signals, joint angles, and total linear length for center of pressure (COP-length) were investigated. Lifting an unstable load significantly increases total lifting time, COP-length, and muscular contraction levels. When responding to impact momentum, subjects attempted to lift with greater elbow extension and shoulder and trunk flexion. A more flexed knee joint (approximately an additional 5 degrees ) was observed during preparation for load impact in the anterior-to-posterior rolling task, allowing the formation of a more stable platform to compensate for the load variation. The largest erector spinae contraction for unstable lifting was approximately 12% to 25% greater maximal voluntary contraction than for the stable analog. The normalized electromyography data demonstrate that the central nervous system detects and responds to the need to stabilize the joints closest to the location of load-shift perturbation.

  16. A technical review of flexible endoscopic multitasking platforms.

    Science.gov (United States)

    Yeung, Baldwin Po Man; Gourlay, Terence

    2012-01-01

    Further development of advanced therapeutic endoscopic techniques and natural orifice translumenal endoscopic surgery (NOTES) requires a powerful flexible endoscopic multitasking platform. Medline search was performed to identify literature relating to flexible endoscopic multitasking platform from year 2004-2011 using keywords: Flexible endoscopic multitasking platform, NOTES, Instrumentation, Endoscopic robotic surgery, and specific names of various endoscopic multitasking platforms. Key articles from articles references were reviewed. Flexible multitasking platforms can be classified as either mechanical or robotic. Purely mechanical systems include the dual channel endoscope (DCE) (Olympus), R-Scope (Olympus), the EndoSamurai (Olympus), the ANUBIScope (Karl-Storz), Incisionless Operating Platform (IOP) (USGI), and DDES system (Boston Scientific). Robotic systems include the MASTER system (Nanyang University, Singapore) and the Viacath (Hansen Medical). The DCE, the R-Scope, the EndoSamurai and the ANUBIScope have integrated visual function and instrument manipulation function. The IOP and DDES systems rely on the conventional flexible endoscope for visualization, and instrument manipulation is integrated through the use of a flexible, often lockable, multichannel access device. The advantage of the access device concept is that it allows optics and instrument dissociation. Due to the anatomical constrains of the pharynx, systems are designed to have a diameter of less than 20 mm. All systems are controlled by traction cable system actuated either by hand or by robotic machinery. In a flexible system, this method of actuation inevitably leads to significant hysteresis. This problem will be accentuated with a long endoscope such as that required in performing colonic procedures. Systems often require multiple operators. To date, the DCE, the R-Scope, the IOP, and the Viacath system have data published relating to their application in human. Alternative forms of

  17. Endoscopic submucosal dissection (ESD) of early neoplastic gastric lesions using a new double-channel endoscope (the "R-scope")

    NARCIS (Netherlands)

    Neuhaus, H.; Costamagna, G.; Devière, J.; Fockens, P.; Ponchon, T.; Rösch, T.

    2006-01-01

    BACKGROUND AND STUDY AIM: Endoscopic submucosal dissection (ESD) allows en bloc resection of lesions > 2 cm in diameter. However the procedure is difficult because of limited visualization of the cutting area. The aim of this study was to evaluate a new endoscope (the "R-scope") for ESD; this

  18. Face the Facts

    Science.gov (United States)

    ... content Skip Navigation Department of Health and Human Services Your Browser does not support javascript, so the search function on this page is disabled 1-800-677-1116 Home > Resources > Factsheets > Face ...

  19. Face Detection and Recognition

    National Research Council Canada - National Science Library

    Jain, Anil K

    2004-01-01

    This report describes research efforts towards developing algorithms for a robust face recognition system to overcome many of the limitations found in existing two-dimensional facial recognition systems...

  20. A pilot animal and clinical study of autologous blood solution compared with normal saline for use as an endoscopic submucosal cushion

    Science.gov (United States)

    WEN, WEI; SHI, CHUANBING; SHI, YAN; JI, GUOZHONG; WU, PING; FAN, ZHINING; ZHANG, FAMING

    2012-01-01

    Normal saline is the most popular agent used during endoscopic submucosal injection. However, endoscopists have never identified an optimal submucosal injection solution, which is not only safe and cost-effective but has a unique lifting ability with endoscopic submucosal cushion and causes less tissue damage. This study aimed to evaluate the effectiveness and microscopic characteristics of a blood solution, including whole blood and plasma solution, as a submucosal cushioning agent, compared with normal saline. Endoscopic submucosal dissection (ESD) procedures in pig stomachs were performed by injecting plasma solution (n=4) and normal saline (n=4). A total of 38 patients with gastrointestinal neoplasms underwent endoscopic musocal resection (EMR) procedures. Of 38 EMRs, 7 used whole blood injection, and 31 of 38 acting as the control group used normal saline. A tissue damage scoring system was developed based on injection-induced hydrops and tears for the evaluation of tissue damage. In animal experiments, the lifting time of the injection with normal saline in the pig colon was shorter than that of the group with plasma solution (18.25±5.44 min vs. 6.5±2.38 min, P=0.007). In animal experiments with ESD procedures in the stomach, the hydrops in the normal saline injection group were more extensive than those in the group with plasma (P=0.011). The degree of tearing in the group with normal saline was observed to be less than that in the group with plasma (P=0.008). In patients with EMR, using the histological scoring method, it was determined that the degree of hydrops in the group with normal saline injection was more extensive than that in the group with whole blood (P<0.001). The effective submucosal tearing in the group with normal saline was less than that in the group with blood (P<0.001). The blood solution, including whole blood and plasma solution, as a novel submucosal injection agent, may outperform normal saline with a unique lifting ability, less

  1. The 'Nefertiti lift': a new technique for specific re-contouring of the jawline.

    Science.gov (United States)

    Levy, Phillip M

    2007-12-01

    Botulinum toxin type A (BoNTA) is now used extensively for rejuvenation of the forehead, glabellar and periocular regions and there is increasing focus on treatment of the lower face. Although there is well-documented evidence for the efficacy of botulinum toxin in the correction of platysmal bands, little work has been done to explore its potential role in rejuvenation of the jawline. To date, effects in this area have been reported as a consequence of platysmal banding treatment and are inconsistent. Hesitancy to explore treatment may be due to evidence of a greater, more durable response to the toxin in the lower facial muscles as well as reports of increased potential migration and subsequent side effects. This paper describes a new technique using BoNTA (Vistabel); Allergan, Irvine, CA, USA) to drape the skin of the jawline contour and provide the visual effect of a 'mini lift'. Experience with 130 patients with doses of BoNTA up to 20 U is described. Patient satisfaction is extremely high and the specificity of dosing and technique has led to a low incidence of adverse effects. The 'Nefertiti lift' is a minimally invasive, effective and acceptable alternative for those patients seeking an effective way to push back surgery.

  2. Low-back loading in lifting two loads beside the body compared to lifting one load in front of the body

    NARCIS (Netherlands)

    Faber, G.S.; Kingma, I.; Bakker, A.J.; van Dieen, J.H.

    2009-01-01

    Low-back load during manual lifting is considered an important risk factor for the occurrence of low-back pain. Splitting a load, so it can be lifted beside the body (one load in each hand), instead of in front of the body, can be expected to reduce low-back load. Twelve healthy young men lifted 10

  3. Bimanual Lifting: Do Fingertip Forces Work Independently or Interactively?

    Science.gov (United States)

    Dimitriou, Pan; Buckingham, Gavin

    2018-01-01

    Bimanual coordination is a commonplace activity, but the consequences of using both hands simultaneously are not well understood. The authors examined fingertip forces across 4 experiments in which participants undertook a range of bimanual tasks. They first measured fingertip forces during simultaneous lifts of 2 identical objects, noting that individuals held the objects with more force bimanually than unimanually. They then varied the mass of the objects held by each hand, noting that when both hands lifted together performance was equivalent to unimanual lifts. The authors next measured one hand's static grip force while the other hand lifted an object. They found a gradual reduction of grip force throughout the trial, but once again no evidence of one hand influencing the other. In the final experiment the authors tested whether tapping with one hand could influence the static grip force of its counterpart. Although the authors found no changes in static grip force as a direct consequence of the other hand's actions, they found clear differences from one task to the other, suggesting an effect of task instruction. Overall, these results suggest that fingertip forces are largely independent between hands in a bimanual lifting context, but are sensitive to different task requirements.

  4. Numerical Study of Transition of an Annular Lift Fan Aircraft

    Directory of Open Access Journals (Sweden)

    Yun Jiang

    2016-09-01

    Full Text Available The present study aimed at studying the transition of annular lift fan aircraft through computational fluid dynamics (CFD simulations. The oscillations of lift and drag, the optimization for the figure of merit, and the characteristics of drag, yawing, rolling and pitching moments in transition are studied. The results show that a two-stage upper and lower fan lift system can generate oscillations of lift and drag in transition, while a single-stage inner and outer fan lift system can eliminate the oscillations. The characteristics of momentum drag of the single-stage fans in transition are similar to that of the two-stage fans, but with the peak of drag lowered from 0.63 to 0.4 of the aircraft weight. The strategy to start transition from a negative angle of attack −21° further reduces the peak of drag to 0.29 of the weight. The strategy also reduces the peak of pitching torque, which needs upward extra thrusts of 0.39 of the weight to eliminate. The peak of rolling moment in transition needs differential upward thrusts of 0.04 of the weight to eliminate. The requirements for extra thrusts in transition lead to a total thrust–weight ratio of 0.7, which makes the aircraft more efficient for high speed cruise flight (higher than 0.7 Ma.

  5. Lifting Wing in Constructing Tall Buildings —Aerodynamic Testing

    Directory of Open Access Journals (Sweden)

    Ian Skelton

    2014-05-01

    Full Text Available This paper builds on previous research by the authors which determined the global state-of-the-art of constructing tall buildings by surveying the most active specialist tall building professionals around the globe. That research identified the effect of wind on tower cranes as a highly ranked, common critical issue in tall building construction. The research reported here presents a design for a “Lifting Wing,” a uniquely designed shroud which potentially allows the lifting of building materials by a tower crane in higher and more unstable wind conditions, thereby reducing delay on the programmed critical path of a tall building. Wind tunnel tests were undertaken to compare the aerodynamic performance of a scale model of a typical “brick-shaped” construction load (replicating a load profile most commonly lifted via a tower crane against the aerodynamic performance of the scale model of the Lifting Wing in a range of wind conditions. The data indicate that the Lifting Wing improves the aerodynamic performance by a factor of up to 50%.

  6. Reduction of Dynamic Loads in Mine Lifting Installations

    Science.gov (United States)

    Kuznetsov, N. K.; Eliseev, S. V.; Perelygina, A. Yu

    2018-01-01

    Article is devoted to a problem of decrease in the dynamic loadings arising in transitional operating modes of the mine lifting installations leading to heavy oscillating motions of lifting vessels and decrease in efficiency and reliability of work. The known methods and means of decrease in dynamic loadings and oscillating motions of the similar equipment are analysed. It is shown that an approach based on the concept of the inverse problems of dynamics can be effective method of the solution of this problem. The article describes the design model of a one-ended lifting installation in the form of a two-mass oscillation system, in which the inertial elements are the mass of the lifting vessel and the reduced mass of the engine, reducer, drum and pulley. The simplified mathematical model of this system and results of an efficiency research of an active way of reduction of dynamic loadings of lifting installation on the basis of the concept of the inverse problems of dynamics are given.

  7. Lift crisis of a spinning table tennis ball

    Science.gov (United States)

    Miyazaki, T.; Sakai, W.; Komatsu, T.; Takahashi, N.; Himeno, R.

    2017-03-01

    The aerodynamic properties of a spinning table tennis ball were investigated using flight experiments. Using high-speed video cameras, the trajectory and rotation of an official ball (Nittaku 3-Star Premium), which was launched by a three rotor machine, were recorded. The drag and lift coefficients (C D and C L) were determined by analysing the video images. The measurements covered the speed and rotation range of typical table tennis shots in the form of the Reynolds number (Re) and dimensionless spin rate (SP), i.e. 3.0 × 104 < Re < 9.0 × 104 and 0 < SP < 1.0, and C D and C L were obtained as functions of Re and SP. We determined that the lift coefficient C L is not a monotonically increasing function of SP. A deep valley of C L was found around SP = 0.5, and the lift force exerted on a spinning ball almost vanished at Re = 9.0 × 104 and 0.48 < SP < 0.5. These results qualitatively agree with the results from recent wind tunnel tests, but quantitative differences owing to the unsteady nature of the flight experiments remain. This anomaly in the lift coefficient should be called the ‘lift crisis’.

  8. Advances in Engineering Software for Lift Transportation Systems

    Science.gov (United States)

    Kazakoff, Alexander Borisoff

    2012-03-01

    In this paper an attempt is performed at computer modelling of ropeway ski lift systems. The logic in these systems is based on a travel form between the two terminals, which operates with high capacity cabins, chairs, gondolas or draw-bars. Computer codes AUTOCAD, MATLAB and Compaq-Visual Fortran - version 6.6 are used in the computer modelling. The rope systems computer modelling is organized in two stages in this paper. The first stage is organization of the ground relief profile and a design of the lift system as a whole, according to the terrain profile and the climatic and atmospheric conditions. The ground profile is prepared by the geodesists and is presented in an AUTOCAD view. The next step is the design of the lift itself which is performed by programmes using the computer code MATLAB. The second stage of the computer modelling is performed after the optimization of the co-ordinates and the lift profile using the computer code MATLAB. Then the co-ordinates and the parameters are inserted into a program written in Compaq Visual Fortran - version 6.6., which calculates 171 lift parameters, organized in 42 tables. The objective of the work presented in this paper is an attempt at computer modelling of the design and parameters derivation of the rope way systems and their computer variation and optimization.

  9. Lifts and stops in proficient and dysgraphic handwriting.

    Science.gov (United States)

    Paz-Villagrán, Vietminh; Danna, Jérémy; Velay, Jean-Luc

    2014-02-01

    In this study, the handwriting performances of dysgraphic children were compared to those of proficient children and adults. The task consisted in writing a single word at normal and fast speeds. A distinction was made between two kinds of pauses, which are often confounded: pen lifts, when the pen is above the paper, and pen stops, when it is immobile on the paper. The number and duration of lifts and stops were analyzed, together with the mean velocity. No difference in the number of lifts was observed between the three groups of writers, but the lift durations were shorter for adults. While dysgraphic children were able to write as fast as proficient children, their stops were more numerous and longer than those of proficient children who, themselves, made more stops than adults. A distinction was made between short, normal, and long, abnormal, stops. The results of this study suggest that pen stops are more appropriate than pen lifts in differentiating the handwriting fluency of dysgraphic and proficient children. Copyright © 2013 Elsevier B.V. All rights reserved.

  10. Posterior endoscopic discectomy: Results in 300 patients

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    Mohinder Kaushal

    2012-01-01

    Full Text Available Background: Posterior endoscopic discectomy is an established method for treatment of lumbar disc herniation. Many studies have not been reported in literature for lumbar discectomy by Destandau Endospine System. We report a series of 300 patients operated for lumbar dissectomy by Destandau Endospine system. Materials and Methods: A total of 300 patients suffering from lumbar disc herniations were operated between January 2002 and December 2008. All patients were operated as day care procedure. Technique comprised localization of symptomatic level followed by insertion of an endospine system devise through a 15 mm skin and fascial incision. Endoscopic discectomy is then carried out by conventional micro disc surgery instruments by minimal invasive route. The results were evaluated by Macnab′s criteria after a minimum followup of 12 months and maximum up to 24 months. Results: Based on modified Macnab′s criteria, 90% patients had excellent to good, 8% had fair, and 2% had poor results. The complications observed were discitis and dural tear in five patients each and nerve root injury in two patients. 90% patients were able to return to light and sedentary work with an average delay of 3 weeks and normal physical activities after 2 months. Conclusion: Edoscopic discectomy provides a safe and minimal access corridor for lumbar discectomy. The technique also allows early postoperative mobilization and faster return to work.

  11. Emphysema. Imaging for endoscopic lung volume reduction

    International Nuclear Information System (INIS)

    Storbeck, B.; Oldigs, M.; Rabe, K.F.; Weber, C.; University Medical Center Hamburg-Eppendorf

    2015-01-01

    Chronic obstructive pulmonary disease (COPD) is characterized by two entities, the more airway-predominant type (''bronchitis'') on the one hand, and emphysema-predominant type on the other. Imaging via high-resolution computed tomography plays an important role in phenotyping COPD. For patients with advanced lung emphysema, new endoscopic lung volume reduction therapies (ELVR) have been developed. Proper selection of suitable patients requires thin-section reconstruction of volumetric CT image data sets also in coronal and sagittal orientation are required. In the current manuscript we will describe emphysema subtypes (centrilobular, paraseptal, panlobular), options for quantifying emphysema and this importance of regional distribution (homogeneous or heterogeneous, target area) as this is crucial for patient selection. Analysis of the interlobular fissures is obligatory despite the lack of standardization, as incomplete fissures indicate collateral ventilation (CV) via parenchymal bridges, which is an important criterion in choosing endoscopic methods of LVR. Every radiologist should be familiar with modern LVR therapies such as valves and coils, and furthermore should know what a lung doctor expects from radiologic evaluation (before and after ELVR). Finally we present a checklist as a quick reference for all steps concerning imaging for ELVR.

  12. Rare Endoscopic Manifestation of Pancreatic Adenocarcinoma

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    Haritha Chelimilla

    2012-07-01

    Full Text Available Gastric ulcer secondary to direct invasion from pancreatic adenocarcinoma is rare. Metastases to the stomach have been commonly reported with melanoma and with primary tumors of the breast, lung, ovary, liver, colon and testis. We report a patient who presented with epigastric pain and in whom subsequently upper endoscopy showed a malignant gastric ulcer secondary to direct invasion from pancreatic adenocarcinoma of the body. An 81-year-old female presented to our hospital with epigastric pain and subsequently underwent endoscopy with endoscopic ultrasound for evaluation of a pancreatic body mass. She had a large gastric ulcer in the fundus which was in direct continuity with the pancreatic mass. Pathology from biopsy of the ulcer revealed invasive well-to-moderately-differentiated adenocarcinoma, and immunohistochemical stains were strongly positive for CA19-9, CK7, CK19 and carcinoembryonic antigen. These findings were consistent with a histopathological diagnosis of metastatic carcinoma of the pancreas. Patients with gastrointestinal metastases usually have advanced malignancy with poor prognosis. Endoscopic evaluation with adequate biopsies should be performed for symptomatic patients.

  13. Endoscopic cochlear implantation: Call for caution.

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    Tarabichi, Muaaz; Nazhat, Omar; Kassouma, Jamal; Najmi, Murtaza

    2016-03-01

    To assess whether transcanal endoscopic access to the basal turn of the cochlea for cochlear implantation is appropriate. Case series study. We reviewed 100 consecutive computed tomographic studies of the sinuses and temporal bone in our institution. We excluded studies that demonstrated evidence of congenital anomalies, chronic ear disease, or inadequate visualization of the cochlea. On axial sections, the angles of the basal turn of the cochlea and of the ear canal in reference to the sagittal plane were recorded as a function of age. Eighty-four studies were included and 16 were excluded. There was significant variability in the relationship between the ear canal and the basal turn of the cochlea in reference to the sagittal plane. A clear majority of images demonstrated the basal turn of the cochlea to align with a more posterior angle than that of the ear canal. The trajectory provided by posterior tympanotomy aligns more favorably with the basal turn of the cochlea than transcanal access. Endoscopic technique, primarily an ear canal intervention, may not be useful in cochlear implant surgery. 4. Laryngoscope, 126:689-692, 2016. © 2015 The American Laryngological, Rhinological and Otological Society, Inc.

  14. Non-endoscopic Mechanical Endonasal Dacryocystorhinostomy

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    Mohammad Etezad Razavi

    2011-01-01

    Full Text Available To circumvent the disadvantages of endoscopic dacryocystorhinostomy such as small rhinostomy size, high failure rate and expensive equipment, we hereby introduce a modified technique of non-endoscopic mechanical endonasal dacryocystorhinostomy (NE-MEDCR. Surgery is performed under general anesthesia with local decongestion of the nasal mucosa. A 20-gauge vitrectomy light probe is introduced through the upper canaliculus until it touches the bony medial wall of the lacrimal sac. While directly viewing the transilluminated target area, a nasal speculum with a fiber optic light carrier is inserted. An incision is made vertically or in a curvilinear fashion on the nasal mucosa in the lacrimal sac down to the bone using a Freer periosteum elevator. Approximately 1 to 1.5 cm of nasal mucosa is removed with Blakesley forceps. Using a lacrimal punch, the thick bone of the frontal process of the maxilla is removed and the inferior half of the sac is uncovered. The lacrimal sac is tented into the surgical site with the light probe and its medial wall is incised using a 3.2 mm keratome and then excised using the Blakesley forceps. The procedure is completed by silicone intubation. The NE-MEDCR technique does not require expensive instrumentation and is feasible in any standard ophthalmic surgical setting.

  15. [Digital imaging and robotics in endoscopic surgery].

    Science.gov (United States)

    Go, P M

    1998-05-23

    The introduction of endoscopical surgery has among other things influenced technical developments in surgery. Owing to digitalisation, major progress will be made in imaging and in the sophisticated technology sometimes called robotics. Digital storage makes the results of imaging diagnostics (e.g. the results of radiological examination) suitable for transmission via video conference systems for telediagnostic purposes. The availability of digital video technique renders possible the processing, storage and retrieval of moving images as well. During endoscopical operations use may be made of a robot arm which replaces the camera man. The arm does not grow tired and provides a stable image. The surgeon himself can operate or address the arm and it can remember fixed image positions to which it can return if ordered to do so. The next step is to carry out surgical manipulations via a robot arm. This may make operations more patient-friendly. A robot arm can also have remote control: telerobotics. At the Internet site of this journal a number of supplements to this article can be found, for instance three-dimensional (3D) illustrations (which is the purpose of the 3D spectacles enclosed with this issue) and a quiz (http:@appendix.niwi. knaw.nl).

  16. PREOPERATIVE ENDOSCOPIC MARKING OF UNPALPABLE COLONIC TUMORS

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    A. L. Goncharov

    2013-01-01

    Full Text Available The identification of small colon lesions is one of the major problems in laparoscopic colonic resection.Research objective: to develop a technique of visualization of small tumors of a colon by preoperative endoscopic marking of a tumor.Materials and methods. In one day prior to operation to the patient after bowel preparation the colonoscopy is carried out. In the planned point near tumor on antimesentery edge the submucous infiltration of marking solution (Micky Sharpz blue tattoo pigment, UK is made. The volume of entered solution of 1–3 ml. In only 5 months of use of a technique preoperative marking to 14 patients with small (the size of 1–3 cm malignant tumors of the left colon is performed.Results. The tattoo mark was well visualized by during operation at 13 of 14 patients. In all cases we recorded no complications. Time of operation with preoperative marking averaged 108 min, that is significantly less in comparison with average time of operation with an intra-operative colonoscopy – 155 min (р < 0.001.Conclusions. The first experience of preoperative endoscopic marking of non palpable small tumors of a colon is encouraging. Performance of a technique wasn't accompanied by complications and allowed to reduce significantly time of operation and to simplify conditions of performance of operation.

  17. [Conversional and endoscopic procedures following bariatric surgery].

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    Zorron, R; Bothe, C; Junghans, T; Pratschke, J; Benzing, C; Krenzien, F

    2016-10-01

    The Roux-en-Y gastric bypass (RYGB) is the therapy of choice in bariatric surgery. Sleeve gastrectomy and gastric banding are showing higher rates of treatment failure, reducing obesity-associated morbidity and body weight insufficiently. Moreover, gastroesophageal reflux disease (GERD) can occur refractory to medication. Therefore, a laparoscopic conversion to RYGB can be reasonable as long as specific conditions are fulfilled.Endoscopic procedures are currently being applied to revise bariatric procedures. Therapy failure following RYGB occurs in up to 20 % of cases. Transoral outlet reduction is the minimally invasive method of choice to reduce gastrojejunal anastomosis of the alimentary limb. The diameter of a gastric sleeve can be unwantedly enlarged as well; that can be reduced by placement of a longitudinal full-thickness suture.Severe hypoglycemic episodes can be present in patients following RYGB. Hypoglycemic episodes have to be diagnosed first and can be treated conventionally. Alternatively, a laparoscopic approach according to Branco-Zorron can be used for non-responders. Hypoglycemic episodes can thus be prevented and body weight reduction can be assured.Conversional and endoscopic procedures can be used in patients with treatment failure following bariatric surgery. Note that non-invasive approaches should have been applied intensively before a revisional procedure is performed.

  18. Endoscopic repair of cerebrospinal fluid rhinorrhea.

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    Kljajić, Vladimir; Vuleković, Petar; Vlaški, Ljiljana; Savović, Slobodan; Dragičević, Danijela; Papić, Vladimir

    Nasal liquorrhea indicates a cerebrospinal fluid fistula, an open communication between the intracranial cerebrospinal fluid and the nasal cavity. It can be traumatic and spontaneous. The aim of this study was to assess the outcome of endoscopic repair of cerebrospinal fluid fistula using fluorescein. This retrospective study included 30 patients of both sexes, with a mean age of 48.7 years, treated in the period from 2007 to 2015. All patients underwent lumbar administration of 5% sodium fluorescein solution preoperatively. Fistula was closed using three-layer graft and fibrin glue. Cerebrospinal fluid fistulas were commonly located in the ethmoid (37%) and sphenoid sinus (33%). Most patients presented with traumatic cerebrospinal fluid fistulas (2/3 of patients). The reported success rate for the first repair attempt was 97%. Complications occurred in three patients: one patient presented with acute hydrocephalus, one with reversible encephalopathy syndrome on the fifth postoperative day with bilateral loss of vision, and one patient was diagnosed with hydrocephalus two years after the repair of cerebrospinal fluid fistula. Endoscopic diagnosis and repair of cerebrospinal fluid fistulas using fluorescein intrathecally has high success rate and low complication rate. Copyright © 2016 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

  19. Endoscopic Surgery for Omohyoid Muscle Syndrome.

    Science.gov (United States)

    Zhu, Bin; Li, Kai; Li, Dan; Amin, Buhe; Zhang, Dongdong; Liu, Chen; Yin, Gang; Gong, Ke; Zhang, Nengwei

    2015-08-01

    Omohyoid muscle syndrome (OMS) (not omohyoid syndrome) is a rare clinical condition that has a characteristic feature of a protruding lateral neck mass during swallowing. The use of endoscopic surgery on the neck is now pretty well established for thyroid and parathyroid glands. Patients with OMS usually undergo simple surgical transection of the omohyoid muscle. The procedure leaves operative scars on the neck, and most patients worry about the cosmetic problems. We report here the first use of an endoscopic procedure instead of traditional surgery for treatment of OMS. We present a rare case of a 26-year-old Chinese man who noted a protruding mass involving the right side of his neck during the past 10 years. OMS was diagnosed. Laparoscopic simple transection of the omohyoid muscle by an ultrasonically activated scalpel was performed. After laparoscopic transection of the omohyoid muscle, the neck mass completely disappeared during swallowing, and there were no operative scars on the neck. To our knowledge, this is the first report of laparoscopy for treatment of OMS. We believe that the laparoscopic procedure is made acceptable for this unusual disease because of the cosmetic result.

  20. Endoscopic vs. tactile evaluation of subgingival calculus.

    Science.gov (United States)

    Osborn, Joy B; Lenton, Patricia A; Lunos, Scott A; Blue, Christine M

    2014-08-01

    Endoscopic technology has been developed to facilitate imagery for use during diagnostic and therapeutic phases of periodontal care. The purpose of this study was to compare the level of subgingival calculus detection using a periodontal endoscope with that of conventional tactile explorer in periodontitis subjects. A convenience sample of 26 subjects with moderate periodontitis in at least 2 quadrants was recruited from the University of Minnesota School of Dentistry to undergo quadrant scaling and root planing. One quadrant from each subject was randomized for tactile calculus detection alone and the other quadrant for tactile detection plus the Perioscope ™ (Perioscopy Inc., Oakland, Cali). A calculus index on a 0 to 3 score was performed at baseline and at 2 post-scaling and root planing visits. Sites where calculus was detected at visit 1 were retreated. T-tests were used to determine within-subject differences between Perioscope™ and tactile measures, and changes in measures between visits. Significantly more calculus was detected using the Perioscope™ vs. tactile explorer for all 3 subject visits (pcalculus detection from baseline to visit 1 were statistically significant for both the Perioscope™ and tactile quadrants (pcalculus detection from visit 1 to visit 2 was only significant for the Perioscope™ quadrant (pcalculus at this visit. It was concluded that the addition of a visual component to calculus detection via the Perioscope™ was most helpful in the re-evaluation phase of periodontal therapy. Copyright © 2014 The American Dental Hygienists’ Association.