Loop Duodenal Switch: Outcomes at One Year

The biliopancreatic diversion and duodenal switch (BPD-DS) is an accepted and published type of bariatric surgery in the United States. The BPD-DS procedure produces the most weight loss of any bariatric surgery commonly performed but has the highest risk of malnutrition and gastrointestinal side effects. The loop duodenal switch (L-DS) is a bariatric surgery which has been modified from a biliopancreatic diversion and duodenal switch to maintain excellent weight loss while possibly reducing side effects. The surgical modifications in this procedure include reducing the number of intestinal reconnections from two to one and reducing the amount of small intestine which is bypassed. The L-DS operation is considered experimental by the American Society of Metabolic and Bariatric Surgery as long-term data in large numbers of patients is not available for weight loss or side effects. The purpose of this study is to examine weight loss and other outcomes in the L-DS operation up to 1 year after the procedure. Study participants will be seen in the clinic at 2 and 6 weeks, and 3, 6, 9, and 12 months per the bariatric surgery center protocol. As part of these normally scheduled visits, weight loss and health status will be recorded. Labs will be checked at 3, 6, and 12 months for nutritional status. A survey to reassess health-related quality of life and gastrointestinal symptoms will be performed at 3 months, 6 months and 12 months.