Evaluation of the Use of Cap in Improving the Performance of Colonoscopy

June 29, 2009 updated by: Royal Prince Alfred Hospital, Sydney, Australia

A Prospective Randomised Controlled Trial Comparing Cap-Assisted Colonoscopy Versus Standard Colonoscopy

The aim of this study is to compare the colonoscopy success rate, cecal time and polyp detection rate between cap-fitted colonoscopy and conventional colonoscopy.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Colonoscopic examination has been used in clinical practice for approximately 40 years. Despite the fact that colonoscopy is widely available and is performed by many experienced colonoscopists there are concerns about the quality of colonoscopy as measured by several technical endpoints such as rate of failed caecal intubation and polyp miss rate. A large population-based study revealed 13.1% of colonoscopies failed to reach the cecum. In addition, one large review of back-to-back colonoscopies showed polyp miss rates of 24% for adenoma.

One potentially promising technique is cap-assisted colonoscopy. A transparent cap (or "hood") is a simple plastic device that can be attached to the tip of a colonoscope before performing the colonoscopy. Several randomized trials from Japan have mixed results regarding improved cecal intubation times and polyp detection rates. A recent large study from Hong Kong showed improved time to cecum but a reduced polyp detection rate. To date there is no large randomized study using the cap in a western population, in whom the colorectal cancer (CRC) incidence is known to be higher. We plan to conduct a randomized controlled trial to investigate the usefulness of cap-assisted colonoscopy in a Western population.

Study Type

Interventional

Enrollment (Actual)

400

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Australia
    • New South Wales
      • Sydney, New South Wales, Australia
        • Royal Prince Alfred Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • All colonoscopy patients referred for colonoscopy at Royal Prince Alfred Hospital.

Exclusion Criteria:

  • Prior colonic resection
  • Pregnancy.
  • Severe co-morbidities.
  • Tertiary referral for endo-mucosal resection.
  • Acute surgical conditions such as severe colitis, toxic megacolon, ischemic colitis, acute gastrointestinal bleeding.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: DIAGNOSTIC
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: SINGLE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
NO_INTERVENTION: Conventional colonoscopy
No cap fitted on the colonoscopes for this group.
EXPERIMENTAL: Cap-assisted colonoscopy
Device: Cap (Olympus Medical Systems: D-201-15004, D-201-14304 and D-201-12704)
Plastic cap fitted on the colonoscope
Other Names:
  • D-201-15004, D-201-14304 and D-201-12704
  • Olympus Medical Systems, Tokyo, Japan.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Time to cecum
Time Frame: One month
One month

Secondary Outcome Measures

Outcome Measure
Time Frame
Polyp detection rate
Time Frame: One month
One month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Royal Prince Alfred Hospital, Sydney, Australia

Investigators

  • Principal Investigator: Arthur J Kaffes, FRACP, Royal Prince Alfred Hospital, Sydney

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

March 1, 2008

Primary Completion (ACTUAL)

February 1, 2009

Study Completion (ACTUAL)

February 1, 2009

Study Registration Dates

First Submitted

June 26, 2009

First Submitted That Met QC Criteria

June 29, 2009

First Posted (ESTIMATE)

June 30, 2009

Study Record Updates

Last Update Posted (ESTIMATE)

June 30, 2009

Last Update Submitted That Met QC Criteria

June 29, 2009

Last Verified

June 1, 2009

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • CAPCOLON
  • X07-0107

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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