- Roux-en-Y gastric bypass
- Roux-en-Y gastric bypass .rü-.en-'wī-, .rü-.än-.ē-'grek- n a gastric bypass surgical procedure in the treatment of severe obesity that involves partitioning off part of the upper stomach (as by stapling and separation from the lower stomach) to form a small pouch, dividing the jejunum into upper and lower parts, and forming a Y-shaped anastomosis by attaching the free end of the lower part of the jejunum to a new outlet on the upper stomach pouch and attaching the free end of what was the upper jejunum to a new opening on the small intestine called also Roux-en-YRoux 'rü César (1857-1934)Swiss surgeon. Roux served as chief of surgery at the University of Lausanne's medical school. In 1892 he began using the technique of the Y-shaped loop in gastrointestinal surgeries involving antral or pyloric obstruction. Although he subsequently abandoned the procedure, on account of the frequency of late peptic ulcerations in the loop, the concept of the Y-shaped loop was eventually adapted for hepatic, biliary, and pancreatic surgeries, as well as for other gastrointestinal procedures.
* * *a treatment for morbid obesity consisting of surgical division of the small intestine to form two arms; the jejunum is attached to a stoma into a gastric pouch and the bypassed duodenum connects the pylorus with an end-to-side anastomosis into the lower jejunum.
Medical dictionary. 2011.