Endoscopic Procedures II: Colonoscopy
Endoscopic Procedures I: Esophagogastroduodenoscopy
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy
Endoscopic Procedures III: Video Capsule Endoscopy
Imaging Studies III: Gastrointestinal Motility Studies and Virtual Colonoscopy
Endoscopic Procedures V: ERCP
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Updated: May 23, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
Published on: July 11, 2025
Romain Coriat1, Augustin Lecler, Dominique Lamarque
1Service de Gastroentérologie, Hôpital Cochin, GHU Ouest, Paris, France. romain.coriat@cch.aphp.fr
This study tested a new way to check the quality of colonoscopy procedures. The method uses a checklist with ten indicators to evaluate how well the procedures are performed. The researchers applied this checklist in ten endoscopy units in France, where 200 patients per unit underwent colonoscopy. They found that most procedures had a valid reason, but some had issues like poor preparation or lower success rates. The checklist successfully identified differences in performance between units. The authors suggest this tool can help endoscopy units improve their practices by detecting suboptimal performance and supporting quality control efforts.
Area of Science:
Background:
Current guidelines emphasize the need for quality control in endoscopic procedures, yet no standardized system exists for consistent evaluation. Prior research has shown that endoscopy outcomes vary significantly across settings, but no prior work had resolved how to systematically measure and improve these outcomes. Established knowledge includes the importance of colonoscopy for early detection of colorectal cancer, but gaps remain in how to consistently assess the quality of these procedures. This gap motivated the development of a reproducible quality assessment framework. No prior work had resolved how to apply such a framework in real-world clinical settings. The absence of a validated method for measuring endoscopy quality has limited efforts to improve patient outcomes. This study aimed to address that limitation by testing a practical tool in multiple clinical environments. The lack of a standardized approach has hindered progress in ensuring consistent care across endoscopy units.
Purpose Of The Study:
The study aimed to evaluate a prospective method for assessing colonoscopy quality in real-world clinical settings. The specific problem addressed was the lack of a standardized system for measuring endoscopy performance. The motivation stemmed from the need to identify areas for improvement in endoscopy units. The researchers proposed that a checklist of quality indicators could serve as a practical tool for this purpose. The goal was to test the feasibility of such a system in daily practice. The study focused on whether the proposed method could be consistently applied across different healthcare settings. The researchers sought to determine if the checklist could detect variations in endoscopy quality. The ultimate aim was to provide endoscopy units with a reliable method for self-assessment and improvement.
Main Methods:
The study involved ten endoscopy units in France, each enrolling 200 patients undergoing colonoscopy. A checklist of ten quality indicators was developed for prospective evaluation. Five indicators were dependent on the colonoscopy procedure itself, and five were independent. Data collection included patient demographics and procedural outcomes. The study design allowed for comparison across general hospitals, university hospitals, and private practices. The checklist was applied consistently across all participating centers. Evaluation focused on criteria such as indication validity, preparation quality, and success rates. The method aimed to identify suboptimal practices and differences between units.
Main Results:
Of the 2000 procedures, 95.9% had a valid indication for colonoscopy, with a range of 92.5% to 100%. Colon preparation was insufficient in 3.7% of cases, ranging from 1% to 10.5%. The success rate of colonoscopies was 95.3%, with a range of 81% to 99%. Adenoma detection rate was 0.31 in successful procedures, ranging from 0.17 to 0.45. Thirty percent of procedures occurred at general hospitals, 20% at university hospitals, and 50% in private practices. The checklist successfully identified variations in performance across different settings. The method proved to be both practical and reliable for quality assessment. These findings suggest the checklist can be used to detect suboptimal practices and support continuous improvement.
Conclusions:
The proposed checklist is a practical and feasible tool for assessing colonoscopy quality in healthcare units. It allows for the detection of suboptimal practices and differences between endoscopy units. The method is based on standard endoscopy and patient criteria, making it widely applicable. The authors suggest that this approach can support continuous quality improvement efforts. The study found that the checklist can be consistently applied across different clinical settings. The findings indicate that the method is suitable for use in daily practice. The authors propose that this tool can help endoscopy units evaluate their own performance. The study supports the use of standardized indicators for quality assessment in endoscopy.
The study found that a checklist of ten indicators can detect suboptimal practices and differences between endoscopy units.
The indicators were divided into five dependent on the procedure and five independent of it.
Insufficient preparation can reduce the success rate and adenoma detection rate, affecting diagnostic accuracy.
The adenoma detection rate is a key indicator of colonoscopy effectiveness, with a reported range of 0.17 to 0.45.
95.9% of procedures had a valid indication, ranging from 92.5% to 100% across centers.
The authors suggest the checklist can support continuous quality improvement in endoscopy units.