S593 Cap-Assisted Endoscopy for Esophageal Foreign Bodies: A Meta-Analysis

Abstract

Introduction: Cap-assisted endoscopy has gained popularity as an alternative to the conventional endoscopy techniques of pushing to the stomach or piecemeal removal via mouth of esophageal foreign bodies. We investigated the effectiveness of cap-assisted endoscopy with conventional endoscopy. Methods: We reviewed several databases from inception to December 2021 to extract studies that compared the effectiveness of cap-assisted endoscopy to conventional endoscopy for removal of esophageal foreign body. Our outcomes of interest were procedure time, time of foreign body retrieval, technical success of the procedure, adverse event rate, and en bloc removal of foreign body. Analysis was performed by calculating odds ratio or mean difference using the random effects model. Results: Six studies were included in our meta-analysis (n=1,305). Cap-assisted endoscopy demonstrated higher odds of technical success (OR 3.23; 95% CI: 1.53-6.81; p=0.002), and en bloc removal (OR 26.23; 95% CI: 17.41-39.52; p< 0.01) as compared to conventional technique. Furthermore, cap-assisted endoscopy showed decreased odds of adverse events (OR 0.22; 95% CI: 0.06-0.81; p=0.02) and mean time of foreign body removal (MD -11.8 minutes; 95% CI: -18.64 to -4.95; p< 0.01) as compared to conventional technique. Conclusion: Cap-assisted endoscopy has higher rates of technical success and en bloc removal with reduction in adverse events and time of foreign body retrieval as compared to conventional technique. Cap-assisted endoscopy should be considered as a potential first-line option for esophageal foreign bodies.