American Family Children's Hospital

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
UW Health bariatric surgery options: Roux-en-Y surgeryDuring the operation, surgical staples 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). Most patients typically have a one- to three-night hospital stay.
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
  • Nutrient malabsorption: Food bypasses a large portion of the stomach and the first portion of the intestine

Additional benefits of the Roux-en-Y gastric bypass include:

  • Significicant hormonal changes for hunger and glycemic control
  • Immediate and robust weight loss (six to seven pounds per week in the first six to 12 months)
  • It is the most durable procedure for long-term weight loss