: 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-Y

Dictionary Entries Near Roux-en-Y gastric bypass

route

Roux-en-Y gastric bypass

RP

Cite this Entry

“Roux-en-Y gastric bypass.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Roux-en-Y%20gastric%20bypass. Accessed 13 Jul. 2024.

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