Carlos Aurélio Schiavon

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OBJECTIVE Roux-en-Y gastric bypass (RYGB) ameliorates type 2 diabetes in severely obese patients through mechanisms beyond just weight loss, and it may benefit less obese diabetic patients. We determined the long-term impact of RYGB on patients with diabetes and only class I obesity. RESEARCH DESIGN AND METHODS Sixty-six consecutively selected diabetic(More)
BACKGROUND Bariatric surgery frequently results in the resolution of type 2 diabetes mellitus (T2DM). One of the many factors that could explain such findings is the duodenal exclusion of the alimentary tract. To test this hypothesis, a surgical model that induces glycemic control without significant weight loss would be ideal. In the present study, we(More)
Gastric bypass surgery causes resolution of type 2 diabetes (T2DM), which has led to the hypothesis that upper gastrointestinal (UGI) tract diversion, itself, improves glycemic control. The purpose of this study was to determine whether UGI tract bypass without gastric exclusion has therapeutic effects in patients with T2DM. We performed a prospective trial(More)
BACKGROUND Most bariatric operations rely on stapler devices. Although today staplers are extremely safe, efficient, and reliable, a potential risk exists for staple line failures, leading to three complications: leaks, fistulas, and bleeding. Porcine small intestinal submucosa strip applied over the staple line suture might help prevent these problems. (More)
Laparoscopic repair of inguinal hernias follows some principles that have already proven its efficiency, as a posterior approach and the prosthetic repair that allows a "tension-free" repair with consequent early return to work and low recurrence rate. To determine the most appropriate laparoscopic repair, we compared the transabdominal preperitoneal (TAPP)(More)
BACKGROUND Super-obese patients can achieve adequate weight loss with long limb Roux-en-Y gastric bypass (RYGB). These patients, however, might need longer intestinal limbs to control co-morbidities such as type 2 diabetes, lipid disorders, hypertension, sleep apnea, and gastroesophageal reflux disorder. METHODS A total of 105 patients with a body mass(More)
CONTEXT The duodenal-jejunal bypass liner (DJBL) is a device that mimics the intestinal portion of gastric bypass surgery and has been shown to improve glucose metabolism rapidly in obese subjects with type 2 diabetes (T2DM). OBJECTIVE To assess the safety of the DJBL and to evaluate its potential to affect glycemic control beneficially in subjects with(More)
BACKGROUND Patients with a body mass index (BMI) < 35 kg/m(2) who are obese, have uncontrolled co-morbidities, and have tried to lose weight with no success do not meet the "traditional" criteria for obesity surgery, and no other treatment is being offered to them. METHODS A total of 37 obese patients (30 women and 7 men) had been undergoing clinical(More)
Bariatric surgery is growing worldwide. An increasing number of patients will require revisional procedures because of inadequate weight control, complications, or loss of quality of life. From August 1999 to September 2003, 62 patients were submitted to laparoscopic revisional surgery. The primary operations consisted of laparoscopic adjustable gastric(More)