NCT03355443

Examining Techniques on Adenoma Miss Rate in Proximal Colon

Efficacy of Segmental Re-examination and Retroflexion of Proximal Colon for Adenoma Miss Rate During Colonoscopy

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 600 (estimated)
• Sponsor: Changhai Hospital · Academic / Other
• Sex: All
• Age: 45 Years – 80 Years
• Healthy volunteers: Accepted

Summary

The primary aim of this study is \- to explore the usefulness of re-examination and retroflexion on adenoma miss rate (AMR) in the proximal colon. Other aims include to explore the data below when re-examination or retroflexion is used. * Adenoma detection rate, ADR * Polyp miss rate, PMR * Polyp detection rate, PDR * Withdrawal time, WT

Detailed description

AMR = number of adenomas missing during the first examination/ total number of adenomas in both examinations = number of adenomas detected only in the second examination/(number of adenomas detected during the first examination + number of adenomas detected only in the second examination)

Conditions

• Colorectal Adenoma
• Colorectal Polyp

Interventions

Type	Name	Description
PROCEDURE	Retroflexion	Retroflexion technique in colonoscopy means turning the colonoscope tip 180 degree in order to look backward in the colon and rectum.
PROCEDURE	Re-examination	Re-examination in colonoscopy means examining the cecum and ascending colon twice in the routine fashion.

Timeline

• Start date: 2017-12-01
• Primary completion: 2018-12-01
• Completion: 2019-12-01
• First posted: 2017-11-28
• Last updated: 2017-11-28

Locations

3 sites across 1 country: China