Efficacy of e-learning using video content in improving trainees' biliary cannulation skills and understanding (with video).

Objectives: E-learning with video content was created to improve trainees' biliary cannulation techniques; this study aimed to evaluate its educational effect prospectively. Methods: E-learning program was conducted using videos demonstrating biliary cannulation for 24 papillae, targeting trainees with 2-6 years of experience in endoscopic retrograde cholangiopancreatography. Ten consecutive cases of biliary cannulation for native papillae performed by trainees were prospectively assessed before and after the e-learning, respectively. The primary outcome was the difficult biliary cannulation rate; the secondary outcomes included a comprehension score assigned by the trainer for each biliary cannulation (maximum of 6 points), trainee failure rate, and adverse events incidence. Results: Eleven trainees participated in the e-learning program. The overall and per-trainee analyses showed no significant differences in the difficult biliary cannulation rate, trainee failure rate, and adverse event incidence before and after e-learning. However, the overall analysis showed a significant increase in comprehension scores after e-learning (median 4 vs. 5, Conclusions: E-learning using video content did not result in a reduction in the difficult biliary cannulation rate. However, it significantly enhanced procedural understanding, indicating its potential to support future acquisition of biliary cannulation skills.