Single-use duodenoscope | Reusable duodenoscope | P value | |

(n=48) | (n=50) | ||

Time taken to reach the papilla (s) | |||

Mean (SD) | 34.2 (55.6) | 32.7 (81.9) | 0.714 |

Median | 20 | 20 | |

IQR | 20–20.5 | 20–22 | |

Range | 15–380 | 15–600 | |

Successful cannulation achieved, n (%) | 46 (95.8) | 50 (100) | 0.237 |

Total number of attempts at cannulation | |||

Mean (SD) | 6.7 (10.9) | 12.7 (15.7) | 0.013 |

Median | 2 | 5 | |

IQR | 1–5.5 | 2–22 | |

Range | 1–43 | 1–75 | |

Advanced cannulation technique used, n (%)*
| 7 (14.6) | 11 (22.0) | 0.343 |

Cross-over to alternate duodenoscope, n (%) | 2 (4.2) | 0 | 0.237 |

Time taken for cannulation (s) | |||

Mean (SD) | 239.5 (650.2) | 359.5 (524.2) | 0.010 |

Median | 35 | 99 | |

IQR | 10–150 | 30–510 | |

Range | 1–4220 | 5–2400 | |

Total procedure duration (min) | |||

Mean (SD) | 22.7 (19.2) | 23.2 (15.0) | 0.310 |

Median | 14.8 | 18.3 | |

IQR | 9.9–28.2 | 12–32.3 | |

Range | 6.1–82 | 6.5–75 |

*Advanced cannulation techniques: single-use duodenoscope—cannulation over pancreatic stent (n=4), needle knife sphincterotomy over pancreatic stent (n=2), transpancreatic biliary sphincterotomy (n=1). Reusable duodenoscope—cannulation over pancreatic stent (n=4), freehand needle knife sphincterotomy (n=2), needle knife sphincterotomy over pancreatic stent (n=1), transpancreatic biliary sphincterotomy (n=4).