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Updated: Jun 27, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
Impact of operator fatigue on endoscopy performance: implications for procedure scheduling
Gavin C Harewood1, Kristia Chrysostomou, Naila Himy
1Department of Gastroenterology & Hepatology, Beaumont Hospital, Dublin, Ireland. harewood.gavin@gmail.com
Endoscopist fatigue may decrease colonoscopy completion rates and lengthen insertion times with successive procedures. However, lesion detection and withdrawal times remain stable, indicating preserved quality in repetitive endoscopic procedures.
Area of Science:
- Gastroenterology
- Endoscopy
- Medical Quality Improvement
Background:
- Increasing demand for endoscopic procedures necessitates higher endoscopist workloads.
- Endoscopist fatigue is a potential concern impacting procedural quality.
- This study investigates the relationship between procedure order and endoscopy performance.
Purpose of the Study:
- To evaluate the impact of endoscopist fatigue on the quality of endoscopic procedures.
- To compare key performance indicators based on the chronological order of colonoscopies and esophagogastroduodenoscopies (EGDs).
Main Methods:
- Prospective observation of consecutive endoscopic procedures.
- Comparison of colonoscopy quality indicators (cecal intubation, lesion detection, withdrawal/insertion times) and EGD duration across procedure sequences.
- Analysis of outcomes based on chronological procedure order.
Main Results:
- Colonoscopy cecal intubation rates significantly decreased from 90% (procedures 1-3) to 76% (procedures 4+).
- Median colonoscopy insertion times tended to lengthen for later procedures (5th+ vs. 1st-4th).
- Lesion detection rates, withdrawal times, and EGD duration remained consistent regardless of procedure order.
Conclusions:
- Colonoscopy cecal intubation rates appear to decline with increasing procedure numbers.
- A trend towards longer insertion times was observed in later procedures.
- Key quality metrics like lesion detection and withdrawal time, along with EGD duration, were not adversely affected by procedural fatigue.
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