A duodenal switch, or biliopancreatic diversion with a duodenal switch (BPD-DS), is a surgical procedure for weight loss. It is used to treat severe obesity. It involves two main components. Sleeve gastrectomy and intestinal rearrangement. It is similar to a SADI-S but here the surgeon also creates a loop in the small intestine.
The procedure removes a large portion of the stomach. This creates a smaller, banana-shaped stomach pouch. In turn, this restricts the amount of food you can eat. And, absorption of nutrients changes because it bypasses part of the small intestine.
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