Enrolled patients will be subjected to a pre-operative gastroscopy, 48-Hour Bravo pH study and EndoFlip. In addition, each patient will complete a GERD-related quality of life questionnaire (GERD-HRQL scale). One year after surgery, patients will undergo a follow up a gastroscopy, pH study, EndoFlip and the same quality of life questionnaire to predict the incidence of postoperative GERD and determine the effect of sleeve gastrectomy.
This study aims to determine if preoperative EndoFlip measurement can effectively predict postoperative GERD-related quality of life and lower esophageal acid exposure.