Use of a double-channel duodenoscope for diagnostic and therapeutic ERCP

Background: A double-channel duodenoscope has the potential to shorten ERCP procedure time or improve procedure success rates because tasks can be done in parallel through variably situated accessory channels. Methods: We prospectively evaluated a prototype double-channel duodenoscope in 102 patients, recording findings, procedural success, and potential advantages or problems associated with the instrument. Results: Both channels were used in 79 cases (77%) and a single-channel in the remainder. Ninety-nine percent (101 of 102) of diagnostic and 95% (87 of 92) of therapeutic ERCPs were successful. Instrument advantages included decreased procedure time (23%), cannulation/procedural ease (16%), and miscellaneous (6%). Disadvantages were noted in 15% of the patients and were related to instrument diameter and diameter of the accessory channels. Conclusions: Additional study of second generation dual-channel duodenoscopes appears warranted.