Background: Vertical sleeve gastrectomy is a relatively new bariatric procedure with lower morbidity and mortality than other weight loss surgeries. The predictive values of preoperative esophagogastroduodenoscopy for detecting histopathological abnormalities prior to sleeve gastrectomy have not been clearly described. This study aimed to determine the negative predictive value of preoperative endoscopic biopsies for detecting Helicobacter pylori (H. pylori) infection and other pathological findings.
Methods: This cross-sectional study examined 102 patients who underwent vertical sleeve gastrectomy from January 2023 to November 2023. Preoperative histopathology of esophagogastroduodenoscopy specimens was compared to postoperative ones for H. pylori infection, gastritis, atrophy, and metaplasia. Moreover, gastroesophageal reflux disease symptoms were postoperatively followed for 6 months.
Results: The negative predictive value of preoperative esophagogastroduodenoscopy for detecting H. pylori infection, gastritis, metaplasia and atrophy were 95 %, 79 %, 93 %, and 98 %, respectively. In an overall view, for all pathologies, the negative predictive value was 53.4 %. Moderate gastritis and focal metaplasia were significantly underdiagnosed preoperatively (p < 0.001). H. pylori infection and focal metaplasia were significantly more prevalent in females after surgery (p < 0.001). H. pylori infection and gastritis were positively correlated with increased postoperative gastroesophageal reflux disease symptoms (p < 0.001).
Conclusion: Preoperative endoscopy has a high negative predictive value for detecting H. pylori infection, atrophy, and metaplasia but has suboptimal values for gastritis.
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