Gastric Bypass (Laparoscopic Roux-en-Y)
The laparoscopic roux-en-Y gastric bypass has been performed for many decades and is the most commonly performed operation today for weight loss. As a result, it is the gold standard against which all bariatric operations are compared.
The weight loss that results following the gastric bypass comes as a result of both restriction and malabsorption. Restriction means the patient can only eat small amounts of food following the operation, as a result of the stomach being transformed into a small pouch. Malabsorption means that fewer calories are absorbed from the food that is eaten, as a result of the intestines being rerouted. Weight loss following gastric bypass by our surgeons averages close to 80% of excess weight.
Before the development of laparoscopic surgery, the gastric bypass was performed as an “open” operation with a large incision and usually required a hospital stay of 7 to 10 days. Today, we perform the operation laparoscopically (“keyhole” surgery) with very small incisions, cameras, and specialized instruments. As a result, most of our patients require only one night in the hospital and can return to work after 2 to 6 weeks, depending on the type of work they do.
Patients for whom the laparoscopic gastric bypass might be the best choice of operation are those who have diabetes and/or severe gastroesophageal reflux disease.