Preserved Fat-Free Mass after Gastric Bypass and Duodenal Switch

Preserved Fat-Free Mass after Gastric Bypass and Duodenal Switch

BACKGROUND Concerns for the possibility of an excessive loss of fat-free mass (FFM) and resting metabolic rate (RMR) after bariatric surgery, such as Roux-en-Y gastric bypass (RYGB) and duodenal switch (BPD/DS), have been raised. OBJECTIVES This study aims to examine body composition and RMR in patients after RYGB and BPD/DS and in non-operated controls. METHODS Body composition and RMR wer...

Vitamin status after bariatric surgery: a randomized study of gastric bypass and duodenal switch.

BACKGROUND Bariatric surgery is widely performed to induce weight loss. OBJECTIVE The objective was to examine changes in vitamin status after 2 bariatric surgical techniques. DESIGN A randomized controlled trial was conducted in 2 Scandinavian hospitals. The subjects were 60 superobese patients [body mass index (BMI; in kg/m(2)): 50-60]. The surgical interventions were either laparoscopic ...

Surgical treatment of severe obesity with laparoscopic gastric bypass and duodenal switch

Mechanistic Comparison between Gastric Bypass vs. Duodenal Switch with Sleeve Gastrectomy in Rat Models

BACKGROUND Both gastric bypass (GB) and duodenal switch with sleeve gastrectomy (DS) have been widely used as bariatric surgeries, and DS appears to be superior to GB. The aim of this study was to better understand the mechanisms leading to body weight loss by comparing these two procedures in experimental models of rats. METHODS Animals were subjected to GB, DS or laparotomy (controls), and ...

Fat inhibition of gastric acid secretion in duodenal ulcer patients before and after proximal gastric vagotomy.

In seven duodenal ulcer patients the effect of intraduodenal infusion of 20 ml oleic acid on submaximal gastric acid secretion stimulation by a continuous pentagastrin infusion was evaluated before and after proximal gastric vagotomy. In the control tests 20 ml of saline was given. Before vagotomy, oleic acid evoked a significant inhibition of gastric acid secretion of 25% compared with the con...