Laparoscopic Roux-en-Y Gastric Bypass
Gastric bypass surgery makes the stomach smaller, reducing it to a one-ounce egg-sized pouch that allows food to bypass part of the small intestine. This change in size allows you to feel full more quickly than when your stomach was its original size, which reduces the amount of food you eat and thus the calories consumed. Bypassing part of the intestine also results in fewer calories being absorbed. This leads to weight loss.
The most commonly performed bariatric procedure in the United States is the "Roux-en-Y" gastric bypass surgery. In this surgery, the stomach is made smaller by creating a small pouch at the top of the stomach using surgical staples. The smaller stomach is connected directly to the middle portion of the small intestine (jejunum), bypassing the rest of the stomach and the upper portion of the small intestine.
- Patients lose about 60-80 percent of excess weight in 12-24 months.
- Patients typically regain less than 15 percent of their weight after 5-10 years.