Monitoring colonoscopy withdrawal time significantly improves the adenoma detection rate and the performance of endoscopists

Endoscopy
Stephan R VavrickaAlain M Schoepfer

Abstract

The recommended minimum withdrawal time for screening colonoscopy is 6 minutes. Adenoma detection rates (ADRs) increase with longer withdrawal times. We aimed to compare withdrawal times and ADRs of endoscopists unaware of being monitored vs. aware. Seven experienced gastroenterologists prospectively performed 558 screening colonoscopies during a 9-month period in a Swiss University hospital. Colonoscopy withdrawal times were first measured without the gastroenterologists’ knowledge of being monitored (n = 355 colonoscopies) and then with their knowledge (n = 203 colonoscopies). The median withdrawal time when gastroenterologists were unaware of being monitored was 4.5 minutes (interquartile range [IQR] 4 – 5.5 minutes) without intervention and 6 minutes (IQR 4 – 9 minutes) with intervention, increasing significantly to 7.3 minutes (IQR 6.5 – 9 minutes) and 8 minutes (IQR 7 – 11 minutes), respectively, when they were aware of being monitored (P < 0.001 both for colonoscopies with and without intervention). The ADR increased from 21.4 % when the gastroenterologists were unaware of being monitored to 36.0 % when they were aware (P < 0.001). In the multivariate regression model, the endoscopists knowing they were being monitored w...Continue Reading

Citations

Feb 1, 2017·Current Treatment Options in Gastroenterology·Eelco C Brand, Michael B Wallace
Jun 26, 2017·Gastroenterology·Michael B WallaceAmit Rastogi
Mar 31, 2019·Postgraduate Medical Journal·Duochen JinBangmao Wang
Dec 31, 2019·Frontline Gastroenterology·Ammar Al-RifaieMo Thoufeeq
Aug 25, 2020·Journal of Laparoendoscopic & Advanced Surgical Techniques. Part a·Qiaoqiong DaiBingchen Chen
Aug 8, 2020·The American Journal of Gastroenterology·Folasade P May, Aasma Shaukat
Mar 23, 2021·Annals of Surgical Treatment and Research·Rumi ShinWon-Kyung Kang
Jul 6, 2021·Endoscopy International Open·Shimaa A AfifyMo H Thoufeeq

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