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Related Experiment Video

Updated: Jul 13, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists

Published on: July 11, 2025

Factors affecting the technical difficulty of colonoscopy.

Se Yong Oh¹, Chong Il Sohn, In Kyung Sung

¹Department of Internal Medicine, Kangbuk Samsung Hospital Sungkyunkwan University School of Medicine, Seoul, Korea.

Hepato-Gastroenterology

|August 22, 2007

Summary

Colonoscopy difficulty is linked to patient age, gender, BMI, and pain. Identifying these factors can help predict challenging colonoscopies and inform alternative screening choices.

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Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Flexible Colonoscopy in Mice to Evaluate the Severity of Colitis and Colorectal Tumors Using a Validated Endoscopic Scoring System

Published on: October 16, 2013

Area of Science:

Gastroenterology
Medical Diagnostics

Background:

Colonoscopy is a key tool for colorectal disease screening and surveillance.
The procedure can be uncomfortable for patients and technically demanding for endoscopists.

Purpose of the Study:

To identify factors influencing colonoscopy technical difficulty.
To predict patients likely to experience a difficult colonoscopy.

Main Methods:

A study included 646 outpatients, recording pre-procedure data (age, gender, BMI, surgical history, IBS symptoms).
Post-procedure assessments included bowel prep quality, procedural difficulty, pain levels, and cecal intubation time.

Main Results:

Advanced age, female gender, low BMI, poor bowel preparation, prior surgery, patient pain, and IBS were associated with longer cecal intubation times.
Multivariate analysis confirmed advanced age, female gender, low BMI, poor bowel preparation, and patient pain as independent predictors of difficulty.

Conclusions:

Patients with advanced age, female gender, and low BMI should be informed about potential difficulty and pain during colonoscopy.
Alternative diagnostic methods like barium enema or CT colonography may be considered if colonoscopy is not essential.