Laparoscopic Roux-en-Y Gastric Bypass

The Roux-en-Y Gastric Bypass (GBP) procedure is the most popular bariatric procedure in North America. This surgery can now be performed laparoscopically (minimally invasive surgery) in most cases through six small incisions. The stomach is partitioned into two parts using a surgical stapler. The upper part forms a small (approx. 1/2 ounce) gastric pouch, which will receive food.  Then an outlet from the pouch to a limb of small bowel (150 cm roux limb) is created using a circular stapler.  This results in a bypass of most of the stomach and duodenum. The hospital stay is usually 2 days.  Reported weight loss from the GBP varies widely, but it is generally reported that  average excess weight loss ranges from 60% to 85% within two to three years.

Three quarters of the weight loss occurs in the first year in contrast to the gradual weight loss of the Lapband.  If the gallbladder contains gallstones and they are causing symptoms, it may be removed at the time of surgery.  If it does not contain stones or there are no symptoms, patients are placed on actigall (a bile thinning agent) for six months during the most intense period of weight loss to decrease the risk of gallstone formation.

 Potential complications include gastric perforation, leakage from the anastomosis (hook-up), vitamin/mineral deficiencies blood clots and others.  The average mortality (death) rate is 0.5%.  Dr. Chlysta will discuss potential complications with you during your appointment.