Effect of proton pump inhibitors compared to histamine-2 receptor antagonists on bleeding management and wound healing after endoscopic mucosal resection or endoscopic submucosal dissection: A meta-analysis of randomized clinical trials

Introduction.Proton pump inhibitors (PPIs) and histamine type-2 receptor antagonists (H2RAs) are generally effective in preventing delayed bleeding and healing artificial wounds after endoscopic mucosal resection (EMR) or endoscopic submucosal dissection (ESD).This study aimed to review the therapeutic effects of PPIs and H2RAs on damage caused by EMR and ESD. Materials and methods.Thirteen articles were collected between 2002 and 2022 by searching Medlib, ScienceDirect, PubMed, International Scientific Indexing (ISI), Embase, and Scopus databases using valid keywords.The main inclusion criteria were delayed wound healing, bleeding, epigastric pain, intraoperative bleeding, and perforation.The odds ratio (OR) and 95% confidence interval (95% CI) were evaluated using a random or fixed effects model.Data analysis was performed using Stata v. 14.2. Results. A total of 13 articles including 1,483 patients were analyzed.The results showed that delayed bleeding was significantly less frequent in the PPI group than in the H2RA group (OR = 0.6; 95% CI: 0.39-0.92).Subgroup analysis showed that PPI was more effective in preventing delayed bleeding than H2RA for ESD wounds (OR = 0.65; 95% CI: 0.44-1.08).There was no statistically significant difference between both groups regarding the incidence of epigastric pain, intraoperative bleeding, wound healing, and perforation after endoscopic treatments. Conclusions.The meta-analysis results reveal that PPI is more effective than H2RA in preventing delayed bleeding after endoscopic treatment, particularly in patients treated with ESD.However, there was no significant difference between PPI and H2RA in terms of intraoperative bleeding, epigastric pain, wound healing, and perforation from endoscopic therapy.