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Updated: May 22, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
Published on: July 11, 2025
The cap-assisted technique enhances colonoscopy training: prospective randomized study of six trainees
Sang Man Park1, Soon Hak Lee, Keun Young Shin
1Division of Gastroenterology and Hepatology, Department of Internal Medicine, Kyungpook National University Hospital, 50, Samduk-Dong 2 Ga, Junggu, Daegu, 700-721, South Korea.
Colonoscopy caps improve trainee success rates and reduce procedure time for cecal intubation. This training tool enhances gastrointestinal (GI) trainee competence in colonoscopy, without affecting polyp or adenoma detection.
Area of Science:
- Gastroenterology
- Medical Education
- Endoscopy
Background:
- Colonoscopy and polypectomy are crucial for colorectal cancer prevention.
- Competence in colonoscopy is a key skill for gastrointestinal (GI) trainees.
- Optimal colonoscopy performance requires extensive training.
Purpose of the Study:
- To evaluate the impact of a colonoscopy cap on trainee performance.
- To compare cecal intubation success rates and times between trainees using and not using a cap.
- To assess the effect of cap-assisted colonoscopy on polyp and adenoma detection rates.
Main Methods:
- A comparative study involving six GI trainees, each performing 100 screening colonoscopies.
- Three trainees used a colonoscopy cap, while three did not.
- Key performance indicators included cecal intubation success rate, intubation time, and detection rates for polyps, adenomas, advanced adenomas, and adenocarcinomas.
Main Results:
- The cap group achieved a significantly higher cecal intubation success rate (80.7% vs 63.3%, p < 0.001).
- Average cecal intubation time was shorter in the cap group (13.7 min vs 18.7 min, p < 0.001).
- No significant differences were observed in polyp, adenoma, advanced adenoma, or adenocarcinoma detection rates between the groups.
Conclusions:
- Cap-assisted colonoscopy may enhance cecal intubation success and reduce procedure time for GI trainees.
- The use of a colonoscopy cap is a valuable training aid for improving procedural efficiency.
- Further research may explore the impact on adenoma detection in broader populations.
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