In a sleeve gastrectomy, also known as vertical sleeve gastrectomy or the gastric sleeve procedure, the outer margin of the stomach is removed to restrict food intake. This leaves a sleeve-shaped stomach, roughly the size and shape of a banana, and retains the pylorus, the muscle that controls the emptying of food from the stomach into the intestine. Sleeve gastrectomy is a purely restrictive procedure.
By reducing the size of the stomach, a sleeve gastrectomy allows patients to feel full after eating less and consuming fewer calories. The surgery also removes the portion of the stomach that produces a hormone responsible for inducing hunger.
The sleeve gastrectomy is simpler than the gastric bypass procedure because it does not involve rerouting or reconnecting the intestines. Unlike the Lap-band procedure, the sleeve gastrectomy does not require the implantation of a banding device around a portion of the stomach.
Mini Gastric Bypass surgery is a weight loss surgery that primarily functions as a malabsorptive procedure. In this surgery, a long, narrow gastric tube is created and directly connected to the mid-portion of the small intestine. This bypasses a significant portion of the stomach and upper intestine, reducing calorie and nutrient absorption and promoting weight loss.
Gastric bypass, also known as Roux-en-Y (roo-en-wy) gastric bypass, is a type of weight-loss surgery. This procedure involves creating a small pouch from the stomach and connecting this newly created pouch directly to the small intestine, bypassing a large part of the stomach and the initial segment of the small intestine. This alteration reduces the amount of food the stomach can hold and decreases nutrient absorption, aiding in significant weight loss.
