Backwards Examination of the Right Colon: A Back-to-back Study

Not Applicable

Completed

• Conditions: Colon Neoplasms
• Interventions: Procedure: forward view; Procedure: retroflexion

• Registration Number: NCT02838186
• Lead Sponsor: Attikon Hospital

Brief Summary

The aim of this study is to evaluate the examination of the proximal colon with the retroflexion colonoscopic technique in terms of feasibility and its possible additive contribution in the detection of important lesions, namely polyps and cancers.

Detailed Description

The investigators prospectively examined the additional diagnostic yield of right colon examination with colonoscope retroflexion in consecutive, symptomatic and screening - surveillance patients. Right colon was examined in forward-view first and thereafter, retroflexion was performed to re-inspect it.

Study Timeline

• Study Start: 2013-05
• Study First Submitted: 2013-06-19
• Primary Completion: 2013-12
• Study Completion: 2014-02
• Status Verified: 2016-07
• Study First Submitted QC: 2016-07-16
• Last Update Submitted: 2016-07-16
• Study First Posted: 2016-07-20
• Last Update Posted: 2016-07-20

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 674

Inclusion Criteria

• patients undergoing elective colonoscopy in a Attikon University General Hospital.

Exclusion Criteria

• patients aged <18 and >80 years;
• right colectomy;
• recent abdominalsurgery;
• multiple diverticula of the right colon;
• American Society of Anesthesiology (ASA) physical status classification grade IV;
• inflammatory bowel disease and polyposis syndromes.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
right colon in forward view	forward view	polyp/adenoma detection
right colon in retroflexion	retroflexion	* polyp/adenoma detection * feasibility

Primary Outcome Measures

Name	Time	Method
number of additional identified polyps with right colon scope retroflexion	one week

Secondary Outcome Measures

Name	Time	Method
Change in colorectal cancer (CRC) surveillance intervals among screening-surveillance patients	one week	change: YES or NO
Rate of retroflexion-related adverse events.	one week

Trial Locations

Locations (1)

Attikon University General Hospital; 🇬🇷 Haidari, Attica, Greece