BACKGROUND For privacy and practical reasons, it is sometimes necessary to minimize sharing of individual-level information in multisite studies. However, individual-level information is often needed to perform more rigorous statistical analysis. OBJECTIVES To compare empirically 3 analytic methods for multisite studies that only require sharing of summary-level information to perform statist...

tography (ERCP) can be challenging in patients after Roux-en-Y gastric bypass surgery. We present a case of such a patient with choledocholithiasis who underwent successful ERCP though a remnant of gastrogastric communication. A 57-year-old female after successful Roux-en-Y-gastric bypass presented with symptomatic choledocholithiasis. ERCP with a pediatric colonoscope was unsuccessful because ...

OBJECTIVE This report documents that the gastric bypass operation provides long-term control for obesity and diabetes. SUMMARY BACKGROUND DATA Obesity and diabetes, both notoriously resistant to medical therapy, continue to be two of our most common and serious diseases. METHODS Over the last 14 years, 608 morbidly obese patients underwent gastric bypass, an operation that restricts caloric...

Background: Roux-en-Y gastric bypass is one of the most common bariatric surgery and leads to considerable weight loss in the first months. Aim: To quantify the main early postoperative complications in patients submitted to the gastric bypass. Method: Observational retrospective cohort. Data of 1051 patients with class II obesity associated with comorbidities or class III obesity submit...

BACKGROUND Morbid obesity has become one of the most frequent chronic medical disorders in Western countries, affecting 1.5-2 % of the Dutch population. Currently, the laparoscopic Roux-Y gastric bypass is considered to be the most effective bariatric treatment option for morbid obesity as it results in adequate weight loss and a significant decrease in comorbidity. Although this technique has ...

Introduction: Bariatric surgery is the most effective treatment for morbid obesity and its co-morbidities. Women are advised against becoming pregnant in the first 12-18 months after surgery due to the potential nutritional compromise induced by weight loss. An increasingly recognised complication following bariatric surgery are Petersen-type internal hernias. We present a case of life-threaten...

BACKGROUND About 90% of type 2 diabetic patients are obese or overweight. The obvious clinical improvement observed with surgeries, such as Roux-en-Y gastric bypass, has opened space for research by different factors than only weight loss, as responsible for the return to euglycemia and reduction of medication use. AIM To evaluate the efficacy and safety of surgical treatment of diabetes in o...

Background. Many institutions mandate preoperative weight loss prior to bariatric surgery. This study examines the correlation between preoperative weight change and postoperative success following laparoscopic Roux-en-Y gastric bypass. Methods. We retrospectively studied the correlation between change in BMI before surgery and change in BMI postoperatively, using linear regression analyses and...

OBJECTIVE Gastric bypass surgery is an effective therapy for extreme obesity. However, substantial variability in weight loss outcomes exists that remains largely unexplained. Our objective was to determine whether any commonly collected preoperative clinical variables were associated with weight loss following Roux-en-Y gastric bypass (RYGB) surgery. METHODS The analysis was based on a prosp...