Felippe O Marcondes1, Rebecca A Gourevitch2, Robert E Schoen3,4, Seth D Crockett5, Michele Morris6, Ateev Mehrotra2,7. 1. The University of Texas Medical Branch at Galveston, 301 University Boulevard, Galveston, TX, 77550, USA. fomarcon@utmb.edu. 2. Department of Health Care Policy, Harvard Medical School, 180 Longwood Ave, Boston, MA, 02115, USA. 3. Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh, Pittsburgh, PA, USA. 4. UPMC Presbyterian, Digestive Disorders Center, 200 Lothrop St., 3rd Floor, Pittsburgh, PA, 15213, USA. 5. Division of Gastroenterology and Hepatology, University of North Carolina School of Medicine, Cb 7080, Chapel Hill, NC, 27599, USA. 6. Department of Biomedical Informatics, University of Pittsburgh, Room 437J, 5607 Baum Boulevard, Pittsburgh, PA, 15206-3701, USA. 7. Beth Israel Deaconess Medical Center, Boston, MA, USA.
Abstract
BACKGROUND: There is concern that mental and physical fatigue among endoscopists over the course of the day will lead to lower adenoma detection rate (ADR). There are mixed findings in the prior literature on whether such an association exists. AIMS: The aim of this study was to measure the association between the number of colonoscopies performed in a day and ADR and withdrawal time. METHODS: We analyzed 86,624 colonoscopy and associated pathology reports between October 2013 and September 2015 from 131 physicians at two medical centers. A previously validated natural language processing program was used to abstract relevant data. We identified the order of colonoscopies performed in the physicians' schedule and calculated the ADR and withdrawal time for each colonoscopy position. RESULTS: The ADR for our overall sample was 29.9 (CI 29.6-30.2). The ADR for colonoscopies performed at the 9th + position was significantly lower than those at the 1st-4th or 5th-8th position, 27.2 (CI 25.8-28.6) versus 29.9 (CI 29.5-30.3), 30.2 (CI 29.6-30.9), respectively. Withdrawal time steadily decreased by colonoscopy position going from 11.6 (CI 11.4-11.9) min for the 1st colonoscopy to 9.6 (8.9-10.3) min for the 9th colonoscopy. CONCLUSION: In our study population, ADR and withdrawal time decrease by roughly 7 and 20%, respectively, by the end of the day. Our results imply that rather than mental or physical fatigue, lower ADR at the end of the day might be driven by endoscopists rushing.
BACKGROUND: There is concern that mental and physical fatigue among endoscopists over the course of the day will lead to lower adenoma detection rate (ADR). There are mixed findings in the prior literature on whether such an association exists. AIMS: The aim of this study was to measure the association between the number of colonoscopies performed in a day and ADR and withdrawal time. METHODS: We analyzed 86,624 colonoscopy and associated pathology reports between October 2013 and September 2015 from 131 physicians at two medical centers. A previously validated natural language processing program was used to abstract relevant data. We identified the order of colonoscopies performed in the physicians' schedule and calculated the ADR and withdrawal time for each colonoscopy position. RESULTS: The ADR for our overall sample was 29.9 (CI 29.6-30.2). The ADR for colonoscopies performed at the 9th + position was significantly lower than those at the 1st-4th or 5th-8th position, 27.2 (CI 25.8-28.6) versus 29.9 (CI 29.5-30.3), 30.2 (CI 29.6-30.9), respectively. Withdrawal time steadily decreased by colonoscopy position going from 11.6 (CI 11.4-11.9) min for the 1st colonoscopy to 9.6 (8.9-10.3) min for the 9th colonoscopy. CONCLUSION: In our study population, ADR and withdrawal time decrease by roughly 7 and 20%, respectively, by the end of the day. Our results imply that rather than mental or physical fatigue, lower ADR at the end of the day might be driven by endoscopists rushing.
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