The investigators studied the impact of this surgical procedure on GERD in patients with morbid obesity.~Esophageal syndromes were evaluated according to the Montreal Consensus, where troublesome symptoms were defined as score ≥ 2 on a validated questionnaire of symptoms for Portuguese language along with esophageal syndromes with injury assessed through upper endoscopy.~Esophageal acid exposure was determined through 24h pH monitoring. Increased acid exposure was characterized when total esophageal pH < 4 for at least 4% of the total monitoring time.
The hypothesis of this study was that gastric bypass (GBP) ameliorates gastroesophageal reflux disease (GERD) in morbidly obese patients.