Effects of omega-loop bypass on esophagogastric junction function.

Background: At present, no objective data are available on the effect of omega-loop gastric bypass (OGB) on gastroesophageal junction and reflux.

Objectives: To evaluate the possible effects of OGB on esophageal motor function and a possible increase in gastroesophageal reflux.

Setting: University Hospital, Italy; Public Hospital, Italy.