Laparoscopic Roux-en-Y Gastric Bypass (RYGB)

The procedure involves creating a small stomach pouch (approximately 30 ml) by stapling and separating it from the rest of the stomach. This pouch is then connected directly to the small intestine, bypassing most of the stomach and the first part of the small intestine (the duodenum). The reconstruction forms a "Y" shape, which gives the surgery its name: Roux-en-Y gastric bypass (RYGB).

This rearrangement alters how food is digested and absorbed. It works by both restricting food intake and reducing absorption of calories and certain nutrients. Though more complex than sleeve gastrectomy, it is a metabolically powerful operation with strong long-term weight maintenance and diabetes remission rates. No part of the stomach or intestine is removed, so the anatomy is technically reversible if ever required. It is commonly offered for obesity and metabolic surgery for type 2 diabetes, and can be performed robotically for enhanced precision.