There are four types of bariatric surgery procedures offered at Virtua, as well as revisional surgery to modify a previous bariatric procedure.
Roux-en-Y Gastric Bypass (Gastric Bypass)
Roux-en-Y gastric bypass involves a combination of restriction and malabsorption techniques. The stomach is reduced to a small pouch, the size of an egg. This greatly limits the amount of food and beverages that can be comfortably consumed at one time. The new pouch is connected to the intestines, bypassing a portion of the small intestines. This limits the absorption of calories and nutrients.
Adjustable Gastric Band (Lap-Band)
Laparoscopic adjustable gastric band, often called a Lap-band, is a silicone band that is placed around the stomach through three small incisions. The band is tightened over time to reduce the size of the stomach. The tightness of the band is adjusted through a small port in the abdomen. Gastric banding restricts the amount of food that can be comfortably consumed. It doesn't reduce the absorption of calories and nutrients.
Laparoscopic sleeve gastrectomy is a restrictive bariatric surgery procedure where about 80% of the stomach is removed; the intestines are kept intact. The remaining stomach is formed into a vertical sleeve, which restricts the amount of food that can be comfortably consumed. It also limits the production of the appetite-regulating hormone ghrelin, which makes you feel less hungry. It doesn't affect the absorption of calories and nutrients in the intestines.
Duodenal switch uses both restriction and malabsorption techniques. As in sleeve gastrectomy, about 60-70% of the stomach is removed leaving a "sleeve," which restricts the amount of food that can be eaten. Then, like gastric bypass, this sleeve is connected to the intestines, bypassing a portion of the small intestines. This limits the absorption of calories and nutrients.
Revisional bariatric surgery is the conversion of one type of bariatric surgery procedure to another when medically necessary.