Related Experiment Video
Updated: Mar 8, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
Published on: July 11, 2025
Training mid-career internists to perform high-quality colonoscopy: a pilot training programme to meet increasing
Nicole K Shah-Ghassemzadeh1, Christian S Jackson2, David Juma3
1Department of Internal Medicine, Loma Linda University Medical Center, Loma Linda, California, USA.
Background:
Colorectal cancer (CRC) is the second leading cause of cancer deaths in the USA. Despite a recent rise in CRC screening there remains an increasing demand for colonoscopy, yet a limited supply of gastroenterologists who can meet this need.
Objective:
To determine if a mid-career general internist (GIN) could be trained to perform high-quality colonoscopes via an intensive training programme.
Design:
A GIN trained 2-3 days/week, 4-5 hours/day, for 7 months with an experienced gastroenterologist. Their independent performance was then compared with that of a gastroenterology attending (GA), with and without a gastroenterology fellow (GF).
Main Measures:
The primary outcome was to compare caecal intubation rates, adenoma detection rates (ADRs), interval CRC rates and complications between the three groups.
Key Results:
989 patients were initially included in the study, and 818 were included in the final analysis. Caecal intubation rates were 95%, 94% and 93% for the GIN, GA+GF and GA, respectively (p=0.31). The overall polyp detection rates were 68%, 39% and 44% among the GIN, GA+GF and GA, respectively (p<0.0001). The ADRs were 56%, 33% and 34% for the GIN, GA+GF and GA, respectively (p<0.0001). Three complications occurred, all within the GA group. No interval cancers were diagnosed within a 5-year surveillance period, across all three groups.
Conclusions:
The GIN attained high success rates in all quality measures. Training mid-career GINs to perform high-quality screening colonoscopes, through a standardised curriculum, may be a reasonable approach to address the growing demand for colonoscopists.
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