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The Effect of Bowel Preparation Status on the Polyp Missing Rate

This study has been completed.
Sponsor:
Collaborators:
Konkuk University Medical Center
Konkuk University
Information provided by:
Konkuk University Hospital
ClinicalTrials.gov Identifier:
NCT00988676
First received: October 1, 2009
Last updated: April 19, 2010
Last verified: October 2009
History of Changes

October 1, 2009
April 19, 2010
May 2009
November 2009   (final data collection date for primary outcome measure)
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Complete list of historical versions of study NCT00988676 on ClinicalTrials.gov Archive Site
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The Effect of Bowel Preparation Status on the Polyp Missing Rate
The Effect of Bowel Preparation Status on the Polyp Missing Rate During Colonoscopy: Prospective Study Using Tandem Colonoscopic Evaluation

High quality bowel cleaning preparation was most important prerequisites of a accurate colonoscopy, because even a small amount of residual fecal matter can obscure small polyps and increase unnecessary procedure time. Until now, several studies evaluated the impact of bowel preparation on the quality of colonoscopy using comparison of the polyp detection rate in patients with adequate bowel preparation status to that in patients with inadequate bowel preparation status during colonoscopy. However, there was no direct measurement the effect bowel preparation status on the polyp missing rate, the quality of colonoscopy, using tandem colonoscopic evaluation in prospective setting.

1. Study flow

  1. All patients perform Colonoscopy

    • record the polyp size, shape, location and number

    • record the factors affecting polyp missing rate

      • Patients' age / gender
      • Indication of colonoscopy
      • colonoscopist career
      • colonoscopy withdrawal time
      • bowel preparation status according to scale of U.S. Multi-Society Task Force on colorectal cancer, Aronchick's scale and Ottawa bowel preparation quality scale

  2. the patients needed or wanted to 2nd stage colonoscopic polypectomy (2nd stage polypectomy was performed within 6 month)

    • record additionally detected polyp - size, shape, location and number
Observational
Observational Model: Cohort
Time Perspective: Prospective
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Probability Sample

The patients underwent colonoscopy and 2nd stage colonoscopic polypectomy at Konkuk University Medical Center
  • Colorectal Polyps
  • Colonoscopy
  • Bowel Preparation
  • Polyp Missing Rate
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colonoscopy
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
200
March 2010
November 2009   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • The patients underwent colonoscopy and 2nd stage colonoscopic polypectomy at Konkuk University Medical Center

Exclusion Criteria:

  • Colonoscopy was not reached the caecum
  • The patients with 10 or more polyps (who suspected polyposis syndrome)
  • Bowel preparation was inadequate when 2nd stage colonoscopic polypectomy
  • The patients with inflammatory bowel disease or suspected inflammatory bowel disease
  • The patients had a history of bowel resection
Both
18 Years to 75 Years
Yes
Contact information is only displayed when the study is recruiting subjects
Korea, Republic of
 
NCT00988676
KUH1010135
Yes
Sung Noh Hong, Konkuk University Medical Center; Konkuk University School of Medicine; Konkuk University
Konkuk University Hospital
  • Konkuk University Medical Center
  • Konkuk University
Study Director: Sung Noh Hong, M.D. Konkuk University Medical Center; Konkuk University School of Medicine
Konkuk University Hospital
October 2009

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP