Gastric Bypass and Banding Procedures
A laparoscopic adjustable gastric band is an inflatable silicone device that is placed around the top portion of the stomach, via laparoscopic (minimally invasive) surgery. The band creates a small pouch at the top of the stomach that holds only about ½ cup of food, whereas the typical stomach holds about 6 cups of food. As the upper part of the stomach registers as full, the message to the brain is that the entire stomach is full. This sensation helps the person to be hungry less often, feel full more quickly and for a longer period of time, eat smaller portions, and lose weight over time.
In gastric bypass surgery, the surgeon staples off a large section of the stomach, leaving a tiny pouch. Patients simply can't eat as much as they did before surgery, because this small pouch can only accommodate a few ounces of food at a time, and they subsequently lose weight.
Sleeve gastrectomy is a surgical weight-loss procedure in which the stomach is reduced to about 25% of its original size by laparoscopic removal of a large portion of the stomach following the major curve. The open edges are then attached together (often with surgical staples) to form a sleeve or tube with a banana shape. The procedure permanently reduces the size of the stomach.
Revisional Bariatric Surgery
Some 10 to 15 percent of bariatric by-pass patients begin to regain weight three to five years as their bodies adapt to the surgery and the newly created pouch stretches. A "band-over-bypass" procedure has proven successful in treating this weight regain. It involves placing an Adjustable Gastric Band around the upper portion of the gastric pouch to regain a level of restriction and the early satiety which will aid in long-term lifestyle modification and successful and sustainable weight loss.