Effect of the closure of mesenteric defects in laparoscopic Roux-en-Y gastric bypass: a prospective study.

Background: Internal hernias (IH) are a recognized problem in laparoscopic Roux-en-Y gastric bypass (LRYGB) that can cause intestinal obstruction. The routine closure of the mesenteric defects (MDs) to prevent IH in the LRYGB remains controversial.

Objectives: The main objective of our study was to evaluate the risk of reopening at the level of both MDs, the Petersen space, and the intermesenteric gap.