Raux-en Y gastric bypass (RYGBP):

Combines restriction and malabsorption principles. Biliopancreatic diversion (BPD), including the duodenal switch (BPD-DS) variation, and distal gastric bypass (DGBP) are other variety of procedures

Roux en Y Gastric Bypass

Gastric bypass surgery makes the stomach smaller and allows food to bypass part of the small intestine. You will feel full more quickly than when your stomach was its original size, which reduces the amount of food, you eat and thus the calories consumed. Bypassing part of the intestine also results in fewer calories being absorbed. This leads to weight loss.

The most common gastric bypass surgery is a Roux-en-Y gastric bypass.