Michel Gagner

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1. Although a pause in respiration during swallowing is a feature common to all mammals, inhibition usually occurs during expiration in adult humans and during inspiration in most other species. We tested the hypothesis that this difference is due, at least in part, to the position of the body while feeding. 2. The coordination of respiration and swallowing(More)
The rising prevalence of morbid obesity and the increased incidence of super-obese patients (BMI >50 kg/m2) seeking surgical treatments has led to the search for surgical techniques that provide adequate EWL with the least possible morbidity. Sleeve gastrectomy (SG) was initially added as a modification to the biliopancreatic diversion (BPD) and then(More)
Lumbar hernias, rarely seen in clinical practice, can be acquired after open or laparoscopic flank surgery. We describe a successful laparoscopic preperitoneal mesh repair of multiple trocar-site hernias after extraperitoneal nephrectomy. All the key steps including creating a peritoneal flap, reducing the hernia contents, and fixation of the mesh are(More)
The prevalence of morbidly obese individuals is rising rapidly. Being overweight predisposes patients to multiple serious medical comorbidities including type two diabetes (T2DM), hypertension, dyslipidemia, and obstructive sleep apnea. Lifestyle modifications including diet and exercise produce modest weight reduction and bariatric surgery is the only(More)
BACKGROUND Laparoscopic Roux-en-Y gastric bypass (LRYGBP) is highly effective for morbid obesity. However, the long-term effects in the bypassed segments are unknown. The aim of this study is to evaluate gastrin and histologic changes in bypassed segments after LRYGBP. METHODS 10 50-kg pigs were subjected to LRYGBP. Preoperative weight and serum gastrin(More)
HYPOTHESIS Laparoscopic liver surgery is significantly limited by the technical difficulty encountered during transection of substantial liver parenchyma, with intraoperative bleeding and bile leaks. This study tested whether the use of a bioabsorble staple line reinforcement material would improve outcome during stapled laparoscopic left lateral liver(More)
INTRODUCTION Current effective bariatric procedures such as gastric bypass generate a duodenal-jejunal exclusion, which has been implicated in the resolution of type 2 diabetes. The aim of this study was to test the hypothesis that sleeve gastrectomy with ileal transposition (SGIT), a new procedure, is as effective as Roux-en-Y gastric bypass (RYGB) to(More)
BACKGROUND During recent years laparoscopic cholecystectomy has dramatically increased, sometimes resulting in overtreatment. Aim of this work was to retrospectively analyze all laparoscopic cholecystectomies performed in a single center in order to find the percentage of patients whose surgical treatment may be explained with this general trend, and to(More)
Only 10% to 20% of pancreatic tumors are resectable at the time of diagnosis. Patients with advanced disease have a median survival of 4.9 months. Palliation is often required for biliary or duodenal obstruction, or both, and for pain. Optimal palliation should guarantee the shortest possible hospital stay and as long a survival as possible with a good(More)
BACKGROUND Leaks after sleeve gastrectomy (SG) may be due to a mismatch between staple height and tissue thickness. The aim of this study was to determine the range of gastric thicknesses in three areas of stapling. METHODS SG was performed using a 40-Fr suction calibration system 4 cm from the pylorus. Measurement of combined gastric walls was(More)