It is also known as Roux en Y gastric bypass surgery. Here a major part of stomach and proximal small intestine are bypassed (as shown in the cartoon below). Food then directly (by passing major part of the stomach and small intestine) enters the distal part of small intestine. This is called a malabsorptive procedure because by bypassing the stomach and parts of the small intestine, the absorption of nutrients is prevented. The remaining part of the stomach is left behind. It is important to note the following facts of BYPASS Surgery.
Following facts of BYPASS Surgery
Slightly better weight loss
when compared to Sleeve Gastrectomy
Better
resolution of obesity related illnesses (like Diabetes)
higher incidence of problems like Dumping syndrome and nutritional deficiencies
Also life long medications and monitoring needed
Usually offered as 2 option
Major part of stomach and intestine being bypassed
Who should choose Gastric Bypass Surgery over Sleeve Gastrectomy?
People who have BMI over 45
Long standing Diabetic patients who require large quantities of Insulin
Who would like to be liberal with their food intake (at the risk of dumping)
Who do not get good results with Gastric Sleeve resection (very rarely)