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Updated: Jan 23, 2026

Structured Approach to Colonoscopy Technique Optimization: A Single-Center Experience with Novice Endoscopists
Published on: July 11, 2025
My approach to water-assisted colonoscopy
Keith Siau1,2, Iosif Beintaris3
1Department of Gastroenterology, Dudley Group Hospitals NHS Foundation Trust, Dudley, UK.
Water-assisted colonoscopy (WAC) offers significant benefits for patients and endoscopists, improving procedure effectiveness and safety. This guide aims to increase WAC adoption by addressing educational barriers and promoting its integration into routine practice.
Area of Science:
- Gastroenterology
- Endoscopy
- Medical Education
Background:
- Diagnostic colonoscopy aims for completion, effectiveness, patient acceptance, and safety.
- Water-assisted colonoscopy (WAC) has gained international attention.
- High-quality evidence supports WAC benefits for endoscopists and patients.
Purpose of the Study:
- To promote familiarity with water-assisted colonoscopy (WAC).
- To encourage the incorporation of WAC into daily practice.
- To address the limited uptake of WAC in the UK due to a lack of educational resources.
Main Methods:
- A practical step-by-step guide for WAC.
- Targeted at existing practitioners and trainees.
- Aimed at overcoming educational barriers to WAC adoption.
Main Results:
- Evidence from randomized controlled trials and meta-analyses supports WAC.
- WAC demonstrates benefits for both the endoscopist and the patient.
- Limited uptake in the UK is attributed to insufficient educational resources.
Conclusions:
- WAC has proven benefits supported by robust evidence.
- Increased familiarity and training can enhance WAC adoption.
- Integrating WAC into practice can improve colonoscopy quality and patient experience.
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