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Using computerized assessment in simulated colonoscopy: a validation study.


ABSTRACT: Background and study aims  Patient safety during a colonoscopy highly depends on endoscopist competence. Endoscopic societies have been calling for an objective and regular assessment of the endoscopists, but existing assessment tools are time-consuming and prone to bias. We aimed to develop and gather evidence of validity for a computerized assessment tool delivering automatic and unbiased assessment of colonoscopy based on 3 dimensional coordinates from the colonoscope. Methods  Twenty-four participants were recruited and divided into two groups based on experience: 12 experienced and 12 novices. Participants performed twice on a physical phantom model with a standardized alpha loop in the sigmoid colon. Data was gathered directly from the Olympus ScopeGuide system providing XYZ-coordinates along the length of the colonoscope. Five different motor skill measures were developed based on the data, named: Travel Length, Tip Progression, Chase Efficiency, Shaft movement without tip progression, and Looping. Results  The experinced had a lower travel length ( P  < 0.001), tip progression ( P  < 0.001), chase efficiency ( P  = 0.001) and looping ( P  = 0.006), and a higher shaft movement without tip progression ( P  < 0.001) reaching the cecum compared with the novices. A composite score was developed based on the five measurements to create a combined score of progression, the 3D-Colonoscopy-Progression-Score (3D-CoPS). The 3D-CoPS revealed a significant difference between groups (experienced: 0.495 (SD 0.303) and novices -0.454 (SD 0.707), P  < 0.001). Conclusion  This study presents a novel, real-time computerized assessment tool for colonoscopy, and strong evidence of validity was gathered in a simulation-based setting. The system shows promising opportunities for automatic, unbiased and continuous assessment of colonoscopy performance.

SUBMITTER: Vilmann AS 

PROVIDER: S-EPMC7247901 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Using computerized assessment in simulated colonoscopy: a validation study.

Vilmann Andreas Slot AS   Lachenmeier Christian C   Svendsen Morten Bo Søndergaard MBS   Søndergaard Bo B   Park Yoon Soo YS   Svendsen Lars Bo LB   Konge Lars L  

Endoscopy international open 20200525 6


<b>Background and study aims </b> Patient safety during a colonoscopy highly depends on endoscopist competence. Endoscopic societies have been calling for an objective and regular assessment of the endoscopists, but existing assessment tools are time-consuming and prone to bias. We aimed to develop and gather evidence of validity for a computerized assessment tool delivering automatic and unbiased assessment of colonoscopy based on 3 dimensional coordinates from the colonoscope. <b>Methods </b>  ...[more]

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