Roux-en-Y Gastric Bypass Surgery
UW Health's Medical and Surgical Weight Management surgery team performs gastric bypass or Roux-en-Y surgery, the most common surgery in the U.S. This procedure may be done either through an open approach (large incision) or via the more common laparoscopic approach.
The Roux-en-Y Gastric Bypass Surgery Procedure
During the operation, surgical staplers are used to create a small pouch at the top of the stomach. A segment of the small intestine (the jejunum) is then attached to this pouch. Food, therefore, bypasses most of the stomach and the first part of the small intestine (the duodenum).
Benefits of Roux-en-Y Gastric Bypass
The operation helps you lose weight by caloric restriction (the small pouch created can hold only two to four tablespoons at a time, thereby drastically reducing the amount of food that can be eaten at a time) and nutrient malabsorption (the food does not pass through a large portion of the stomach and the first portion of the intestine).
The Roux-en-Y gastric bypass provides more immediate and robust weight loss (six to seven pounds per week in the first six to 12 months).
Image courtesy of the University of Wisconsin Department of Surgery Publications Office