Gastric banding is a surgical treatment for inducing weight loss in individuals who are obese. The procedure results in the constriction of the stomach, thus, the person then feels full after eating a lesser amount of food than usually, thus being an effective weight loss surgery. Gastric band surgery is also known as a bariatric surgery. There are four types of bariatric surgeries, and these are: Laparoscopic adjustable gastric banding, Roux-en-y gastric bypass, Sleeve gastrostomy, and Biliopancreatic diversion with duodenal switch.
The procedure of bariatric surgeries are as follows:
- Roux-en-y gastric bypass: In this, the surgeon creates a small pouch at the top of the stomach. The pouch then becomes the only part of the stomach which can receive food, and therefore, ends up strongly limiting the amount of food one can eat during a certain period of time.
- Laparoscopic adjustable gastric banding: In this, a band containing an inflatable balloon is kept around the upper part of the stomach and then fixed into place. This leads to the creation of a small stomach pouch above the band with a narrow opening to the rest of the stomach.
- Sleeve gastrectomy: In this, a part of the stomach is separated and then removed from the body. The section of the stomach which is remaining is then formed into a structure like a tube. This smaller stomach cannot hold as much food, and also produces a lesser amount of the hormone which creates an appetite within individuals.
- Biliopancreatic diversion with duodenal switch: This procedure commences with the surgeon removing a large part of the stomach. It results in food bypassing most of the small intestines, and thus, limiting the absorption of calories and nutrients. This alongside the smaller size of the stomach leads to weight loss.