Rapid and long-term weight loss without implants or rerouting intestinal tract
In gastric sleeve surgery, about 60 percent of the stomach is removed laparoscopically, leaving behind a sleeve of the stomach. This smaller stomach restricts the amount of food a patient can eat and leads to significant weight loss.
In some gastric sleeve patients, this procedure is performed instead of gastric banding or gastric bypass surgery. In others, especially those at higher surgical risk, it is offered as the first part of a two-stage surgical plan. As weight is lost following the gastric sleeve procedure and patients become healthier, they can safely be offered a second operation, either gastric bypass or gastric banding, for additional weight loss.
Minimally invasive procedure with risk of few complications
Gastric banding involves placing a silicone gastric band with an inflatable inner collar around the upper stomach to restrict food intake. This creates a small pouch and a narrow passage to the lower stomach. This small passage delays the emptying of food from the pouch and causes a feeling of fullness. The silicone gastric band can be tightened or loosened over time to change the size of the passage.
Gastric banding is usually performed laparoscopically, meaning that the surgeon makes small incisions as opposed to one large one. It is usually done on an outpatient basis.
Currently, two types of gastric bands are approved by the U.S. Food and Drug Administration: the Lap-Band System and the newer Realize Band.
Rapid and long-term weight loss
The most common type of bariatric weight-loss surgery, gastric bypass, works by laparoscopically reducing the volume of the stomach. The intestines are rerouted and a small stomach pouch is created by stapling off the main body of the stomach. Food flows through this pouch, bypassing the main portion of the stomach and emptying slowly into the small intestine where it is absorbed. Gastric bypass surgery restricts food intake and reduces hunger to promote healthy weight loss.
Gastric bypass patients can expect to lose one-half to two-thirds of their excess weight within two years and they should be able to maintain their weight loss for five years and beyond.
For those regaining weight following gastric bypass
Over years following gastric bypass surgery, some patients will regain weight. This may be caused by an enlarged pouch, which can be repaired through a variety of options. Surgeons at UC San Diego Health System are exploring endoscopic options involving inserting instruments through the mouth to reduce the size of the stomach pouch and the opening to the small intestine. This has the effect of reducing the stomach to the size that was achieved by the original gastric bypass surgery and promotes additional weight loss.
It is a restrictive weight-loss surgery, meaning that it restricts the amount of food the stomach can hold. You will feel full sooner so you won’t want to eat as much.