Sleeve gastrectomy is the most commonly done bariatric surgery worldwide. Up to 80% of stomach is removed using staplers to form a vertical sleeve. Capacity of resulting sleeve is 60 to 120 ml.
It is a very simple and safe surgery. Complications are very low. Compared to diversion procedures risk of vitamin and mineral deficiencies is very low.
Hormonal changes after gastric sleeve surgery are less compared to diversion procedures. Chances of long-term weight regain and recurrence of diabetes are very high after gastric sleeve. This is not necessarily a failure of surgery but mainly related to not following a healthy diet and exercise after surgery. These patients may need revision bariatric/ metabolic surgery to induce further hormonal changes necessary for weight loss and diabetes remission. The incidence of reflux of acid into the esophagus is high after sleeve gastrectomy.