Mini Gastric Bypass

Mini gastric bypass (one-anastomosis gastric bypass) forms a longer, narrower stomach pouch joined to the small intestine with a single connection, rather than the two used in Roux-en-Y. The operation is usually shorter, with a similar hospital stay of about two nights.

It is typically considered by the same patients as other bypass procedures. Surgeons differ on when they prefer it: the single connection simplifies the operation, while bile reflux is a specific risk they weigh against a patient’s history.

Useful questions for a provider: why this variant rather than Roux-en-Y or a sleeve for you, how they screen for reflux beforehand, their annual volume for this specific operation, and the same practical points as any bariatric surgery — hospital, days before flying, supplements, and remote follow-up.