Roux-en-Y Gastric Bypass The Surgery
The gastric bypass procedure is performed with laparoscopic (keyhole) technique under general anaesthesia. Five small incisions (between 5 and 12mm in length) are made for the insertion of keyhole surgery instruments. Using these instruments, the top of the stomach is stapled to form a small pouch (30ml to 50ml in size). The small pouch becomes the new, smaller, stomach and is completely separate to the rest of the stomach. This stomach is then joined to the jejunum, the middle part of the small intestine, bypassing the first part of the intestine call the duodenum. The rest of the stomach and duodenum remains the in the body but is no longer used for food digestion. The operation takes between one to two hours.