Vertical Sleeve Gastrectomy
Vertical Sleeve Gastrectomy is a purely restrictive operation that generates weight loss by limiting the amount of food (and therefore calories) that can be eaten. The stomach is restricted by dividing it vertically and removing 85 percent or more, without bypassing the intestines or causing any gastrointestinal malabsorption.
The procedure significantly reduces the size of the stomach — eliminating the portion that produces the hormone that stimulates hunger (Ghrelin) — but still allows the stomach to function normally so most food items can be consumed, although in small amounts. By avoiding the intestinal bypass, the chance of intestinal obstruction, anemia, osteoporosis, protein deficiency and vitamin deficiency are almost eliminated, making the surgery an appealing option for people with existing anemia, Crohn's disease and numerous other conditions that make them too high risk for intestinal bypass procedures.
On average, patients who undergo the Vertical Sleeve Gastrectomy procedure experience a 60 to 80 percent loss of excess weight. It is currently indicated as an alternative to the Adjustable Gastric Banding procedure for lower weight patients and as a safe option for patients with a higher BMI.