Impact of supine versus prone position on endoscopic retrograde cholangiopancreatography performance: a retrospective study

Abstract Background: Endoscopic retrograde cholangiopancreatography (ERCP) is frequently performed in the prone or supine position. We compared the technical success and other outcomes between these positions. Methods: This was a retrospective cohort study using the Clinical Outcomes Research Initiative database. Demographics, procedure and fluoroscopy time, visualization of main structures, and technical success rates were compared between the supine and prone positions. Univariate and multivariate regressions were performed to adjust for age, sex, ethnicity and clinical setting. Results: A total of