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Delays in colonoscopy start time are associated with reductions in adenoma detection rates
Institution:1. Celiac Disease Center, Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA;2. Division of Digestive and Liver Diseases, Department of Medicine, Vagelos College of Physicians & Surgeons, Columbia University, New York, NY, USA;3. Herbert Irving Comprehensive Cancer Center, Vagelos College of Physicians & Surgeons, Columbia University, New York, NY, USA
Abstract:BackgroundPrior investigations of the impact of case delays on adenoma detection rates have not found a significant association, though these studies included modest delays, with few cases delayed by more than one hour.AimsThe aim of this study was to measure the impact of prolonged case delays on the colonoscopy outcome measures of adenoma detection rate and withdrawal time.MethodsWe performed a single center cohort study including patients aged ≥50 years undergoing screening colonoscopy during a 4.5 year period. Using multivariate regression, we measured the impact of delays on adenoma detection rate and withdrawal time, adjusting for age, gender, endoscopist, time of day of the procedure, and bowel preparation quality.ResultsOf 7905 screening colonoscopies, 2503 (32%) were delayed by >1 h. On multivariable analysis, cases delayed 1–2 h were associated with a significant decrease in adenoma detection rate relative to cases delayed ≤1 h (OR 0.88, 95% CI 0.78–1.00, p = 0.049). Withdrawal time was not significantly associated with case delays.ConclusionsProlonged case delays over 1 h are associated with reduced adenoma detection rates. Future research on factors underlying prolonged delays may help mitigate these barriers to care and improve quality outcomes.
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