Mini gastric bypass procedure

The Mini Gastric Bypass (MGB) is a short, simple, successful, reversible laparoscopic gastric bypass weight loss surgery. It has been recently renamed as One Anastomosis Gastric Bypass. The operation usually takes shorter time, with lesser or similar hospital stay as regular bypass.

Indications
As per IFSO-APC Consensus statements 2011.

Bariatric surgery should be considered for the treatment of obesity for acceptable Asian candidates with BMI ≥ 35 with or without co-morbidities.
Bariatric/GI metabolic surgery should be considered for the treatment of T2DM or metabolic syndrome for patients who are inadequately controlled by lifestyle alternations and medical treatment for acceptable Asian candidates with BMI ≥ 30
The surgical approach may be considered as a non-primary alternative to treat inadequately controlled T2DM, or metabolic syndrome, for suitable Asian candidates with BMI ≥ 27.5.
Surgery:
Mini Gastric bypass surgery is performed under general anaesthesia. Your surgeon makes several small incisions on your abdomen. A laparoscope, a thin instrument with a light and camera on the end, is inserted through one of the incisions, allowing your surgeon to clearly view the internal organs on a monitor. Small surgical instruments are inserted through the other incisions to perform the surgery.

The first step is to reduce the size of the stomach so that it holds less food. The stomach is converted into a long slender pouch up to the antral part by stapling.

The second step of the surgery involves the creation of a bypass for food to flow from the new stomach pouch. A loop of small intestine preferably between 150 and 250 cms is chosen for anastomosis depending upon the surgeon and the metabolic condition of the patient. The middle section of intestine is attached to the opening in the stomach pouch creating what is referred to as the "omega loop". The loop enables food to bypass the lower stomach, duodenum, and a portion of the small intestine. At the end of the procedure, the incisions are closed with sutures.