Korean Journal of Gastrointestinal Endoscopy 2011;42(6): 356-360.
Usefulness of Real-time Measurement of Colonoscopy Withdrawal Time
during Fellow Training
Chung Hyun Tae, M.D., Sung-Ae Jung, M.D., Seung-Jung Jun, M.D., Sun-Hee Roh, M.D., Ju Young Choi, M.D.,
Min Jung Kang, M.D., Ji Min Jung, M.D., Seong-Eun Kim, M.D., Ki-Nam Shim, M.D., Hey-Kyung Jung, M.D.,
Tae Hun Kim, M.D., Kwon Yoo, M.D. and Il-Hwan M
Department of Internal Medicine, Ewha Medical Research Institute, Ewha Womans University School of Medicine, Seoul, Korea
Abstract
Background/Aims: Attempts to increase colonoscopy withdrawal time have been
the topic of several recent publications. We assessed whether the real-time
measurement of withdrawal time affected the withdrawal time and polyp detection
rate.
Methods: Real-time colonoscopy withdrawal time was measured in 197 subjects in
a study group and 184 subjects comprised a control group without real-time
measurements. Colonoscopies were performed by four endoscopy specialists and
three fellows during their first year of training. Withdrawal time, clinical features,
bowel preparation, and polyp detection rates were comparatively analyzed.
Results: No significant differences in age, gender, bowel preparation, or polyp
history were found in the two groups. Withdrawal time was significantly higher in
the study group than that in the control group when a fellow performed the
withdrawal. However, polyp detection rate did not significantly increase in the
study group, regardless of physician.
Conclusions: Real-time measurement of colonoscopy withdrawal time did not
increase polyp detection rate, but the withdrawal time was significantly higher
when a fellow performed the withdrawal phase than when a specialist performed
withdrawal. Therefore, the real-time measurement of colonoscopy withdrawal time
seems to be a useful tool for fellow training.
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