Abstract

This study aimed to evaluate the intraoperative endoscopy results in our Laparoscopic Sleeve Gastrectomy (LSG) and Single Anastomosis Gastric Bypass (OAGB) cases and to assess the importance of intraoperative endoscopy. The study included retrospective LSG (n=328) and OAGB (n=43) patients who underwent bariatric surgery and endoscopy at various healthcare institutions between January 2012 and June 2025. Patients' gender, age, 6-month and 1-year Body Mass Index and weight loss rate, comorbidities, sleep apnea, and thyroid function test results were obtained. BMI at 6 months and 1 year was higher in the LSG group, while weight loss levels were higher in the OAGB group. However, the differences between BMI and weight loss levels were not statistically significant (p>0.05). In a total of six patients, the operation plan was modified based on the intraoperative endoscopy results. In two patients, despite being informed about fasting, food was consumed at 4 and 6 am before the operation, and their operations were canceled because they were deemed unable to manage the postoperative period. Despite adhering to preoperative fasting requirements, two patients had low food intolerances, and their operations were postponed. Two patients underwent bypass surgery instead of LSG due to gastric emptying difficulties and reflux-like symptoms. Intraoperative endoscopy can provide vital information in bariatric surgery cases that can help identify potential further complications or manage the surgical process. Although endoscopy is considered an additional invasive procedure, we believe its benefits will be beneficial in both clinical and surgical practice, as well as its inclusion in guidelines.

Key words: Intraoperative endoscopy, Laparoscopic Sleeve Gastrectomy, Single Anastomosis Gastric Bypass