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CompletedNCT01395173Updated Sep 30, 2014

Position Changes During Colonoscope Withdrawal and Polyp Detection

An interventional study of Position change and Standard in Colonic Polyp, sponsored by University of British Columbia. Completed at 1 site in Canada. Open to participants aged 40 Years and older. Per ClinicalTrials.gov, last updated 2014-09-30.

Sponsored by University of British Columbia · Not applicable, Interventional, and Diagnostic

Phase
Not applicable
Study type
Interventional
Enrollment
776
Allocation
Randomized
Ages
40 Years and older
Sex
All
01

Study summary

The purpose of this study is to determine whether position changes during colonoscope withdrawal affects polyp detection rate. We hypothesize that positions change during scope withdrawal will increase polyp detection rate.

02

Conditions studied

  • Colonic Polyp

Keywords

  • detection
03

In context

Polyps

385 studies on the registry are indexed under Polyps; 59 are open to participants now.

This study's enrollment of 776 is above the median of 160 across 250 interventional studies indexed under Polyps.

Browse Polyps studies →

Lead sponsor

University of British Columbia is the lead sponsor of 1,309 studies on the registry; 253 are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 1 (17%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Outpatients undergoing colonoscopy
  • Age 40 or greater

Exclusion criteria

Exclusion Criteria:

  • Inpatient colonoscopy
  • Unable to provide informed consent
  • Unable to complete colonoscopy to cecum
  • Previous bowel resection, inflammatory bowel disease, polyposis syndrome
  • Musculoskeletal disorder or other mobility issue limiting effective patient position changes
  • Inadequate bowel preparation
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
776 participants (actual)

Study arms

  • Placebo comparator
    Control

    Subject will undergo standard colonoscopy.

    Procedure: Standard

  • Active comparator
    Position change

    Subject will under go standard colonoscopy, but also with position changes during colonoscope withdrawal.

    Procedure: Position change

Interventions

  • ProcedurePosition change

    Patients will be randomly assigned to two groups: Control group (those who will receive standard colonoscopy without position changes) and Position change group (those who will undergo position changes during colonoscope withdrawal during colonoscopy). Subjects in position change group will be asked to shift into three different positions during colonoscope withdrawal.

  • ProcedureStandard

    Subjects will undergo standard colonoscopy without position changes during scope withdrawal.

06

What researchers measure

Primary outcomes

  1. Polyp detection rate

    Time frame: 6 minutes

07

Study locations

1 site
  • St. Paul's Hospital
    Vancouver, British Columbia V6Z 2K5, Canada
08

References and documents

Publications

  • Ou G, Kim E, Lakzadeh P, Tong J, Enns R, Ramji A, Whittaker S, Ko HH, Bressler B, Halparin L, Lam E, Amar J, Telford J. A randomized controlled trial assessing the effect of prescribed patient position changes during colonoscope withdrawal on adenoma detection. Gastrointest Endosc. 2014 Aug;80(2):277-83. doi: 10.1016/j.gie.2014.01.032. Epub 2014 Mar 12. PubMed 24629419 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 30, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01395173
Lead sponsor
University of British Columbia
Responsible party
Sponsor
First posted
Jul 15, 2011
Start date
Jul 2011
Primary completion
Jul 2012
Completion
Dec 2013
Last update
Sep 30, 2014

Study contacts

Jennifer Telford, MD, FRCPC
principal investigator · University of British Columbia

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2014. You cannot join it, but the record below documents what was studied.

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