What is a Roux-en-Y Gastric Bypass? Roux-en-Y gastric bypass is the 2nd most frequently performed bariatric surgery. It is named after the Swiss physician César Roux who was the first practitioner connecting the lower jejunum to the small intestine in the form of an Y-shaped loop back in 1907. During this procedure a small part … Continue reading Roux-en-Y Gastric Bypass