The Effect of Segmental Re-examination of Colon for Adenoma Detection in Colonoscopy

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

450 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-09-01

Study Completion Date

2019-12-31

Brief Summary

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The aim of this study was to determine whether segmental re-examination of the each segment (right colon, mid-colon, and left colon) could increase the proximal adenoma detection rate (ADR) and to evaluate the time-effectiveness of this approach.

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Detailed Description

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The investigators prospectively recruited patients (aged ≥45 and ≤75 years) who were scheduled to undergo colonoscopy at our center. Patients were excluded if they had advanced colonic cancer, prior resection of the proximal colon, inflammatory bowel disease, or polyposis syndrome, or were unable to provide informed consent. In addition, if the quality of bowel preparation was unsatisfactory (Boston Bowel Preparation Scale \[BBPS\] score \<2 in any segment of the colon), or if the cecum could not be intubated during the colonoscopy, patients were excluded.

A randomization list was generated with the randomization algorithm of random sorting, using Excel program. Included patients were randomly assigned to one of the two groups: segmental re-examination group, in which the each segment (right colon, mid-colon, and left colon) was examined twice segmentally; or control group, in which the withdrawal time in the each segment was about 2 minutes.

Conditions

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Adenoma

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

SINGLE

Participants

Study Groups

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Case group

Each segment of colon (right colon, mid-colon, and left colon) was examined twice

Group Type EXPERIMENTAL

segmental reexamination

Intervention Type OTHER

segmental reexamination during colonoscopy

Control group

Withdrawal time in the each segment of colon (right colon, mid-colon, and left colon) was about 2 minutes.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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segmental reexamination

segmental reexamination during colonoscopy

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients (aged ≥45 and ≤75 years) who were scheduled to un- dergo colonoscopy

Exclusion Criteria

* Patients who had advanced colonic cancer, prior resection of the proximal colon, inflammatory bowel disease, or polyposis syndrome, or were unable to provide informed consent.
* If the quality of bowel preparation was unsatisfactory (Boston Bowel Preparation Scale \[BBPS\] score \<2 in any segment of the colon), or if the cecum could not be intubated during the colonoscopy, patients were excluded.

Minimum Eligible Age

45 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes