Ilaprazole Versus Esomeprazole for Artificial Ulcer Healing After Gastric Endoscopic Submucosal Dissection: A Single-Center Retrospective Study

Background: Endoscopic submucosal dissection (ESD) is widely used for the treatment of gastric neoplasia; however, the large artificial ulcer created during the procedure requires several weeks to heal. Although proton pump inhibitors (PPIs) are routinely administered after ESD, evidence comparing individual PPIs for artificial ulcer healing in real-world practice remains limited. This study compared the effectiveness of oral ilaprazole and oral esomeprazole as maintenance therapy after gastric ESD. Methods: This retrospective single-center study included patients who underwent gastric ESD between January 2020 and December 2024. All patients received intravenous PPI therapy for two days after ESD and were subsequently prescribed either oral ilaprazole 20 mg once daily or esomeprazole 40 mg once daily for 8 weeks. The primary outcome was complete artificial ulcer healing at 8 weeks. The secondary outcome was post-discharge delayed bleeding. Results: A total of 229 patients were analyzed (147 in the esomeprazole group and 82 in the ilaprazole group). The overall 8-week ulcer healing rate was 94.3%, with no significant difference between the ilaprazole and esomeprazole groups (97.5% vs. 92.5%, p = 0.114). In multivariate analysis, artificial ulcer size ≥ 30 mm was the only independent predictor of incomplete ulcer healing (odds ratio 20.850, 95% confidence interval 1.884–230.712, p = 0.013). Post-discharge delayed bleeding occurred in 8 patients (3.4%), all in the esomeprazole group (p = 0.032). No treatment-related adverse events were observed. Conclusions: Ilaprazole demonstrated ulcer-healing efficacy comparable to esomeprazole after gastric ESD. Artificial ulcer size ≥ 30 mm was the principal determinant of delayed healing, whereas the treatment group was not independently associated with healing outcomes. Ilaprazole may be considered a reasonable maintenance PPI option in routine post-ESD management.