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https://www.readbyqxmd.com/read/27573512/endoscopic-management-of-vertical-banded-gastroplasty-stricture-feasibility-safety-and-efficacy
#1
Chin Hong Lim, Stuart K Amateau, Sayeed Ikramuddin, Daniel B Leslie
BACKGROUND: Although vertical banded gastroplasty (VBG) is no longer performed in the USA, due to its popularity in 1980s, many patients still possess this anatomy with its inherent complications. The stomal stenosis secondary to tight ring or mesh is traditionally treated with surgical removal of the silastic ring or a complex revision, which was hampered by complications, technical complexity, and invasiveness. We described our experience of endoscopic management of this complex problem and the early outcomes...
August 29, 2016: Obesity Surgery
https://www.readbyqxmd.com/read/27528815/migration-of-mesh-into-gastric-lumen-a-rare-complication-of-vertical-banded-gastroplasty
#2
İlhan Ece, Hüseyin Yılmaz, Mustafa Şahin
The problem of revision of failed vertical banded gastroplasty (VBG) has become a common situation in bariatric surgery. Sleeve gastrectomy (SG) has been recently used to revise failed restrictive procedures. This study presents a patient that is treated with Roux-n-Y gastric bypass because of mesh migration after SG for revision of failed VBG.
2016: Ulusal Cerrahi Dergisi
https://www.readbyqxmd.com/read/27424121/venous-blood-gases-of-varicocele-veins-correlation-with-testicular-blood-flow-and-semen-quality-in-varicocele-patients
#3
Khaleeq Ur Rehman, Hafsa Zaneb, Ahsan Numan, Abdul Basit Qureshi, Imtiaz Rabbani, Mohamad Shehbaz Yousaf, Habib Ur Rehman
OBJECTIVE: To investigate venous blood gases (VBG) in varicocele veins and correlation with semen and testicular blood flow. MATERIAL AND METHODS: Twenty-seven infertile patients, undergoing left microsurgical varicocelectomy, at Urology/Andrology Department of a teaching hospital, were included. Before surgery semen parameters were recorded and scrotal color doppler ultrasonography (CDUS) done to measure peak systolic velocity (PSV) resistive index (RI) of sub capsular and intra parenchymal branches of testicular artery...
July 13, 2016: Urology
https://www.readbyqxmd.com/read/27418900/current-trends-in-treatment-of-kienb%C3%A3-ck-disease-a-survey-of-hand-surgeons
#4
Gregory P Kolovich, Chidimma M K Kalu, Michael E Ruff
BACKGROUND: The cause and treatment of Kienböck disease is controversial. No treatment algorithm has been accepted. We surveyed US hand surgeons to determine trends and attitudes regarding the treatment of Kienböck disease. METHODS: An online questionnaire was created focusing on specific treatments of Kienböck disease. The survey included 6 questions regarding the cause of disease, preferred vascularized bone grafting (VBG) procedure, and treatment of stages I, II, IIIA, and IIIB...
March 2016: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/27409317/optimization-of-multi-grating-volume-holographic-spectrum-splitters-for-photovoltaic-applications
#5
G B Ingersoll, J R Leger
Recent research has shown that using multiple diverse-bandgap photovoltaic (PV) cells in conjunction with a spectrum splitting optical system can significantly improve PV power generation efficiency. Although volume Bragg gratings (VBGs) can serve as effective spectrum splitters, the inherent dispersion of a VBG can be detrimental given a broad-spectrum input. The performance of a single holographic spectrum splitter element can be improved by utilizing multiple single volume gratings, each operating in a slightly different spectral band...
July 10, 2016: Applied Optics
https://www.readbyqxmd.com/read/27313885/redo-surgery-after-failed-open-vbg-laparoscopic-minigastric-bypass-versus-laparoscopic-roux-en-y-gastric-bypass-which-is-better
#6
Tamer M S Salama, Karim Sabry
Background. Long-term studies have reported that the rate of conversion surgeries after open VBG ranged from 49.7 to 56%. This study is aiming to compare between LMGB and LRYGB as conversion surgeries after failed open VBG with respect to indications and operative and postoperative outcomes. Methods. Sixty patients (48 females and 12 males) presenting with failed VBG, with an average BMI of 39.7 kg/m(2) ranging between 26.5 kg/m(2) and 53 kg/m(2), and a mean age of 38.7 ranging between 24 and 51 years were enrolled in this study...
2016: Minimally Invasive Surgery
https://www.readbyqxmd.com/read/27283009/correlation-of-venous-blood-gas-and-pulse-oximetry-with-arterial-blood-gas-in-the-undifferentiated-critically-ill-patient
#7
Eli Zeserson, Ben Goodgame, J Daniel Hess, Kristine Schultz, Cynthia Hoon, Keith Lamb, Vinay Maheshwari, Steven Johnson, Mia Papas, James Reed, Michael Breyer
RATIONALE: Blood gas analysis is often used to assess acid-base, ventilation, and oxygenation status in critically ill patients. Although arterial blood gas (ABG) analysis remains the gold standard, venous blood gas (VBG) analysis has been shown to correlate with ABG analysis and has been proposed as a safer less invasive alternative to ABG analysis. OBJECTIVE: The purpose of this study was to evaluate the correlation of VBG analysis plus pulse oximetry (SpO2) with ABG analysis...
June 9, 2016: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/27250556/inlay-osteotome-sinus-floor-elevation-with-concentrated-growth-factor-application-and-simultaneous-short-implant-placement-in-severely-atrophic-maxilla
#8
Yonghui Chen, Zhiyu Cai, Dingguo Zheng, Pei Lin, Yahua Cai, Shuxin Hong, Yiwei Lai, Dong Wu
Sinus floor elevation with simultaneous implant placement in severely atrophic maxilla is challenging. The aim of this retrospective study was to evaluate the short-term performance of modified osteotome sinus floor elevation (OSFE) with concentrated growth factor (CGF) application and concurrent placement of a short implant in cases with residual bone height (RBH) of 2-4 mm. Twenty-five short implants were installed in 16 patients with mean RBH of 3.23 mm using modified OSFE with CGFs from January 2012 to April 2014...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27035633/achalasia-after-bariatric-surgery
#9
Mena Boules, Ricard Corcelles, Andrea Zelisko, Esam Batayyah, Dvir Froylich, John Rodriguez, Stacy Brethauer, Kevin El-Hayek, Matthew Kroh
BACKGROUND: Obesity is an epidemic on the rise. Increasing body mass index (BMI) has been associated with a number of comorbid diseases, including rarely reported motility disorders such as achalasia. Motility disorders are prevalent in obese patients, possibly more prevalent when compared to the nonobese population. Identification of motility disorders is important before bariatric surgery and may alter the planned type of procedure performed. Limited data exist regarding the development or existence of esophageal motility disorders after bariatric surgery...
June 2016: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/27022451/long-term-results-after-revisions-of-failed-primary-vertical-banded-gastroplasty
#10
Martin R van Wezenbeek, Frans J F Smulders, Jean-Paul J G M de Zoete, Misha D Luyer, Gust van Montfort, Simon W Nienhuijs
AIM: To compare the results after revision of primary vertical banded gastroplasty (Re-VBG) and conversion to sleeve gastrectomy (cSG) or gastric bypass (cRYGB). METHODS: In this retrospective single-center study, all patients with a failed VBG who underwent revisional surgery were included. Medical charts were reviewed and additional postal questionnaires were sent to update follow-up. Weight loss, postoperative complications and long-term outcome were assessed...
March 27, 2016: World Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/27002386/crystal-phase-and-orientation-dependent-electrical-transport-properties-of-inas-nanowires
#11
Mengqi Fu, Zhiqiang Tang, Xing Li, Zhiyuan Ning, Dong Pan, Jianhua Zhao, Xianlong Wei, Qing Chen
We report a systematic study on the correlation of the electrical transport properties with the crystal phase and orientation of single-crystal InAs nanowires (NWs) grown by molecular-beam epitaxy. A new method is developed to allow the same InAs NW to be used for both the electrical measurements and transmission electron microscopy characterization. We find both the crystal phase, wurtzite (WZ) or zinc-blende (ZB), and the orientation of the InAs NWs remarkably affect the electronic properties of the field-effect transistors based on these NWs, such as the threshold voltage (VT), ON-OFF ratio, subthreshold swing (SS) and effective barrier height at the off-state (ΦOFF)...
April 13, 2016: Nano Letters
https://www.readbyqxmd.com/read/26852799/thermoelectric-power-in-bilayer-graphene-device-with-ionic-liquid-gating
#12
Yung-Yu Chien, Hongtao Yuan, Chang-Ran Wang, Wei-Li Lee
The quest for materials showing large thermoelectric power has long been one of the important subjects in material science and technology. Such materials have great potential for thermoelectric cooling and also high figure of merit ZT thermoelectric applications. We have fabricated bilayer graphene devices with ionic-liquid gating in order to tune its band gap via application of a perpendicular electric field on a bilayer graphene. By keeping the Fermi level at charge neutral point during the cool-down, we found that the charge puddles effect can be greatly reduced and thus largely improve the transport properties at low T in graphene-based devices using ionic liquid gating...
2016: Scientific Reports
https://www.readbyqxmd.com/read/26826917/medico-legal-analysis-of-legal-complaints-in-bariatric-surgery-a-15-year-retrospective-study
#13
Lucile Tuchtan, Radwan Kassir, Bernard Sastre, Christian Gouillat, Marie-Dominique Piercecchi-Marti, Christophe Bartoli
BACKGROUND: Bariatric surgery for severe obesity has become an effective and accepted treatment for sustained weight loss. OBJECTIVES: The aim of our study was to analyze the complications and issues raised by the experts on which jury or judges' decisions were made for the different types of bariatric surgery. SETTING: University Hospital, France. MATERIALS AND METHODS: We have carried out a retrospective study of 59 expert review dossiers over a period of 15 years (1999-2014) on the different types of bariatric surgery (laparoscopic adjustable gastric band [LAGB], sleeve gastrectomy [SG], Roux-en-Y gastric bypass [RYGB], vertical banded gastroplasty [VBG], and gastric plication [GP])...
May 2016: Surgery for Obesity and related Diseases: Official Journal of the American Society for Bariatric Surgery
https://www.readbyqxmd.com/read/26698716/high-power-narrow-bandwidth-mid-infrared-ppmgln-optical-parametric-oscillator-with-a-volume-bragg-grating
#14
Yuefeng Peng, Xingbin Wei, Zan Nie, Xingwang Luo, Jue Peng, Yong Wang, Deyuan Shen
We report on a high-power, narrow spectral bandwidth 2.907 µm PPMgLN optical parametric oscillator (OPO) pumped by a 1.064 µm pulsed Nd:YAG MOPA laser source. Free-running operation of the OPO exhibits maximum average output power of 71.6 W at 2.907 µm with a slope efficiency of 26.7%. Broad 2.907 μm spectral bandwidth of the free-running OPO was suppressed from ~9 nm to less than 0.7 nm by using a VBG as one cavity mirror. The maximum average power was 51.7 W at 2907.55 nm for the spectrum-narrowed OPO, corresponding to a slope efficiency of 22...
November 30, 2015: Optics Express
https://www.readbyqxmd.com/read/26681719/weight-change-adjusted-effects-of-gastric-bypass-surgery-on-glucose-metabolism-2-and-10-year-results-from-the-swedish-obese-subjects-sos-study
#15
Kajsa Sjöholm, Elisabeth Sjöström, Lena M S Carlsson, Markku Peltonen
OBJECTIVE: It has been suggested that weight change-independent effects on fasting insulin and glucose levels are present after gastric bypass (GBP) but not after banding and vertical banded gastroplasty (VBG). We therefore evaluated weight change-adjusted effects of GBP, compared with restrictive surgical procedures, on long-term changes in fasting levels of glucose, insulin, and homeostatic model assessment of insulin resistance (HOMA-IR) in the Swedish Obese Subjects (SOS) study. RESEARCH DESIGN AND METHODS: Participants who completed the 2-year (n = 1,762) and/or the 10-year (n = 1,216) follow-up were divided into three weight change classes (weight loss >30%, 20-30%, or ≤20%), and by surgical method (banding, VBG, or GBP)...
April 2016: Diabetes Care
https://www.readbyqxmd.com/read/26644608/evaluation-of-adjusted-central-venous-blood-gases-versus-arterial-blood-gases-of-patients-in-post-operative-paediatric-cardiac-surgical-intensive-care-unit
#16
Naveen G Singh, S R Prasad, V Manjunath, P S Nagaraja, Pranav J Adoni, Divya Gopal, A M Jagadeesh
BACKGROUND AND AIMS: Central venous catheters are in situ in most of the intensive care unit (ICU) patients, which may be an alternative for determining acid-base status and can reduce complications from prolonged arterial cannulation. The aim of this study was to examine the reliability between adjusted central venous blood gas (aVBG) and arterial blood gas (ABG) samples for pH, partial pressure of carbon-di-oxide (pCO2), bicarbonate (HCO3 (-)), base excess (BE) and lactates in paediatric cardiac surgical ICU...
October 2015: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/26640060/arteriovenous-blood-gas-agreement-in-intensive-care-patients-with-varying-levels-of-circulatory-compromise-a-pilot-study
#17
Daniel Hynes, Samantha Bates, Ashley Loughman, Sharon Klim, Craig French, Anne-Maree Kelly
OBJECTIVE: Venous blood gas (VBG) analysis is suggested as an alternative to arterial blood gas (ABG) analysis. In haemodynamically stable patients, there is clinically acceptable arteriovenous (AV) agreement for pH and bicarbonate (HCO3-) concentration, but in haemodynamically unstable patients, evidence is conflicting. We aimed to evaluate the level of AV agreement for the values of pH, PCO2, base excess, HCO3- and lactate between ABGs and VBGs in critically ill patients with varying degrees of hypotension...
December 2015: Critical Care and Resuscitation: Journal of the Australasian Academy of Critical Care Medicine
https://www.readbyqxmd.com/read/26620217/laparoscopic-conversion-of-vertical-banded-gastroplasty-into-roux-en-y-gastric-bypass
#18
Radwan Kassir, Pierre Blanc, Jean Gugenheim, Imed Ben Amor, Tarek Debs, Olivier TIffet
Laparoscopic conversion of vertical banded gastroplasty (VBG) into Roux-en-Y gastric bypass is a technically demanding procedure. This article demonstrates the feasibility of conversion of failed VBG to Roux-en-Y gastric bypass (RYGBP).We have a series of 15 patients who underwent conversion from VBG to RYGBP, and the results were satisfactory regarding the percent excess weight loss and the resolution of the comorbidities, without a significant increase in the complications. In patients with a difficult anatomy below the cardia, dividing the esophagus just above the esophagogastric junction and performing an esophagojejunostomy may be a safe alternative to converting to a Scopinaro-BPD...
February 2016: Obesity Surgery
https://www.readbyqxmd.com/read/26368721/extended-tunability-of-nd-doped-fiber-lasers-operating-at-872-936%C3%A2-nm
#19
B Leconte, B Cadier, H Gilles, S Girard, T Robin, M Laroche
Efficient operation of an Nd-doped fiber laser operating in a wavelength-tunable configuration using a volume Bragg grating (VBG) is reported in this Letter. A high-power operation on the 4F3/2-4I9/2 transition of Nd3+ at short wavelengths below 900 nm is demonstrated for the first time in silica fibers. A high-efficiency (47% laser conversion) output power up to 22 W and a narrow linewidth of 0.035 nm are achieved. This configuration is compared with a more conventional fiber laser setup using a bandpass filter and a highly reflective dichroic mirror...
September 1, 2015: Optics Letters
https://www.readbyqxmd.com/read/26365660/the-correlation-between-computed-tomography-and-duplex-evaluation-of-autogenous-vein-bypass-grafts-and-their-relationship-to-failure
#20
Jonathan Rehfuss, Salvatore Scali, Yong He, Bradley Schmit, Kenneth Desart, Peter Nelson, Scott Berceli
OBJECTIVE: Duplex ultrasound (DUS) imaging for vein bypass graft (VBG) surveillance is confounded by technical and physiologic factors that reduce the sensitivity for detecting impending graft failure. In contrast, three-dimensional computed tomography angiography (CTA) offers high-fidelity anatomic characterization of VBGs, but its utility in detecting at risk grafts is unknown. The current study analyzed the correlation between DUS and CTA for detection of vein graft stenosis and evaluated the relationship of the observed abnormalities to VBG failure...
December 2015: Journal of Vascular Surgery
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