Evaluation of the Lower Esophagus Sphincter Using High-resulation Manometry (Hrm) Before and After Sleeve Gastrectomy Operation

Purpose Laparoscopic sleeve gastrectomy (LSG) is one of the most commonly preferred surgical treatments for obesity; however, disruption of the angle of His and gastric fundus during the procedure may increase the risk of gastroesophageal reflux. This study aimed to evaluate the effect of LSG on lower esophageal sphincter (LES) resting pressure and its potential relationship with reflux development. Methods Lower esophageal sphincter resting pressure was assessed using high-resolution manometry in 28 patients who underwent LSG. Preoperative and postoperative LES pressure values were compared. Additionally, the relationship between changes in LES pressure, sex, and body mass index (BMI) reduction was analyzed. Results Postoperative evaluation demonstrated a significant decrease in LES resting pressure compared to preoperative values (p = 0.048). No statistically significant difference was observed between sexes (p > 0.05). The reduction in LES pressure was significantly more pronounced than the decrease in BMI (p = 0.026). Conclusion LSG is associated with a significant postoperative reduction in LES resting pressure, which may increase the risk of gastroesophageal reflux. Therefore, patients undergoing LSG should be carefully monitored for reflux and reflux-related complications, including esophagitis and Barrett’s esophagus.