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- W2030217144 abstract "Background: The polyp detection rates have recently been emphasized as a quality indicator of colonoscopy. The colonoscopic withdrawal time has been elucidated to be highly associated with polyp detectability. Objectives: To investigate the association between colorectal polyp detection rates and colonoscopic withdrawal times in the examinations by trainee colonoscopists for Japanese patients. Methods: Procedural data performed at The University of Tokyo Hospital were reviewed. Thirteen trainee colonoscopists were characterized by their mean withdrawal time for normal colon. The polyp detection rates were investigated in association with withdrawal times of colonoscopists. Results: Overall, 2,314 colonoscopies were reviewed. Mean withdrawal time ranged from 6.5min to 10.4 min among colonoscopists. Colorectal polyps were detected in 47% of the patients, and polyp detection rates in individual endoscopists ranged between 36% and 60%. There was no association between mean withdrawal times and polyp detection rates in an overall analysis (p = 0.21). However, when stratified by the use of transparent hood, an association was shown in the examinations without hood (p = 0.03), whereas no association was found with hood attachment. In the examinations without hood attachment, the polyp detection rate of the colonoscopists with withdrawal times over 8 minutes were significantly larger than that of the colonoscopists with withdrawal times below 8 minutes (38% vs 49%, p<0.0001). With hood attachment, the polyp detection rates generally increased (49% in total) and the variation according to withdrawal time was lowered (range 38%-60%). Conclusion: Without hood attachment, the polyp detection rates were associated with colonoscopic withdrawal times in our practice, and the withdrawal time over 8 minutes could be recommended. However, the detection rates generally improved and the variation seemed to be relieved by hood attachment." @default.
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- W2030217144 date "2009-04-01" @default.
- W2030217144 modified "2023-09-23" @default.
- W2030217144 title "Colonoscopic Withdrawal Times and Detection Rates of Colorectal Polyps" @default.
- W2030217144 doi "https://doi.org/10.1016/j.gie.2009.03.527" @default.
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