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Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
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Comparing endoscopic interventions to improve serrated adenoma detection rates during colonoscopy: a systematic

Muhammad Aziz1, Rawish Fatima1, Wade Lee-Smith2

  • 1Department of Internal Medicine.

European Journal of Gastroenterology & Hepatology
|August 11, 2020
PubMed
Abstract

Insights

Serrated adenoma detection is improved by water-based techniques, add-on devices like endocuff vision, and narrow band imaging. These endoscopic interventions significantly increase the serrated adenoma detection rate compared to standard colonoscopy.

Area of Science:

  • Gastroenterology
  • Endoscopic research
  • Medical technology assessment

Background:

  • Serrated lesions, including sessile serrated adenomas/polyps and traditional serrated adenomas, are often missed during colonoscopies due to their subtle appearance and location.
  • Improving the detection rate of these lesions is crucial for preventing colorectal cancer progression.

Purpose of the Study:

  • To conduct a network meta-analysis comparing various endoscopic interventions aimed at enhancing the serrated adenoma detection rate (SADR).
  • To identify the most effective endoscopic techniques for improving the detection of subtle serrated lesions.

Main Methods:

  • A systematic review of randomized controlled trials (RCTs) was performed using multiple databases (PubMed, Embase, Cochrane, WoS) up to November 29, 2019.
  • Included 28 RCTs involving 22,830 patients, comparing add-on devices, electronic and dye-based chromoendoscopy, full-spectrum endoscopy (FUSE), and water-based techniques (WBT) against high-definition colonoscopy.
  • Performed both pairwise and network meta-analyses using a random-effects model to calculate risk ratios (RR) and 95% confidence intervals (CI).

Main Results:

  • Direct meta-analysis showed superiority for WBT (RR: 1.41), add-on devices (RR: 1.53), narrow band imaging (NBI) (RR: 1.93), and endocuff vision (RR: 1.87) compared to high-definition colonoscopy.
  • Network meta-analysis confirmed these findings, with chromoendoscopy also demonstrating improved SADR (RR: 1.74).

Conclusions:

  • Add-on devices (especially endocuff vision), NBI, WBT, and chromoendoscopy are effective endoscopic interventions for improving SADR.
  • These techniques are comparable to each other and significantly outperform standard high-definition colonoscopy in detecting serrated adenomas.

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