The laparoscopic sleeve gastrectomy (SG) consists of making a stomach that looks like a pouch into a long tube, therefore the name “sleeve”. The new stomach can hold about 100 – 120 cc in volume, resulting in a restrictive weight loss. The SG preserves the pylorus, the valve that regulates emptying of the stomach, which acts as “nature’s band” and provides for the normal process of stomach emptying to continue and allows for the feeling of fullness. The remainder of the stomach is removed.
It can be done either as a standalone procedure or as part of a staged operation. The weight loss is projected to be in the range of 55 to 70& of excess body weight. There is no malabsorption created and no foreign body or implant involved. Long-term results are not yet available but early data suggests that the weight loss is close to that seen with gastric bypass.