2018 Volume 60 Issue 3 Pages 243-250
[Purpose] The purpose of this study was to clarify the appropriate length of time required for trainees to attempt biliary cannulation.
[Methods] One hundred fifty-seven patients underwent endoscopic retrograde cholangiopancreatography (ERCP) for biliary cannulation by trainees between January 2015 and October 2016. We retrospectively evaluated the characteristics of native papilla in which it was difficult for trainees to perform biliary cannulation, by comparing the successful (n＝114) and failed (n＝43) biliary cannulation groups. We analyzed the risk factors for post-ERCP pancreatitis (PEP) and the appropriate length of time required for trainees to attempt biliary cannulation.
[Results] A significant characteristic of native papilla for difficult biliary cannulation was the length of oral protrusion ≥10 mm. Risk factors for PEP were the trainee’s cannulation time, length of oral protrusion ＜10 mm, and use of a metallic stent. The appropriate length of time required for trainees to attempt biliary cannulation was 11 min.
[Conclusion] We concluded that a prolonged attempt at cannulation was a significant risk factor for PEP. A length of time of 11 min was considered to be appropriate for trainees to attempt biliary cannulation.
