Right-sided Retroflexion With Standard Adult Versus Pediatric Colonoscopes
Public ClinicalTrials.gov record NCT01675934. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Screening colonoscopy has been shown to be less effective in preventing colorectal cancer in the proximal colon compared to the distal colon. Possible reasons for this include bowel preparation often being worse in the proximal colon as well as flat depressed lesions being more common in the proximal colon. Retroflexion is commonly regarded as standard practice in the rectum, but retroflexion in the proximal colon is not currently routinely performed due to concerns of perforation and possibly because of the increased time required. Proximal colon retroflexion has been shown to be safe and effective without any complications, but data regarding ability to retroflex with certain types of colonoscopes is limited. Endoscopists interchangeably use standard adult colonoscopes or pediatric colonoscopes. Studies have not been performed to comparatively evaluate the success rates of standard adult and pediatric colonoscopes and whether either type of instrument confers a greater polyp detection rate.
Study identification
- NCT ID
- NCT01675934
- Recruitment status
- Withdrawn
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- Not listed
Conditions and interventions
Conditions
Interventions
- Retroflexion with the adult colonoscope. Procedure
- Retroflexion with the pediatric colonoscope. Procedure
Procedure
Eligibility (public fields only)
- Age range
- 18 Years to 100 Years
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Feb 2012 (Type not available)
- Primary completion
- May 2013 (Actual)
- Completion
- May 2013 (Actual)
- Last update posted
- Jan 8, 2016
2012 – 2013
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Froedtert Surgery Center | Milwaukee | Wisconsin | 53226 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT01675934, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jan 8, 2016 · Synced Oct 21, 2026
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Open the official record
The complete public registry record, listed eligibility criteria, and available contact information for NCT01675934 live on ClinicalTrials.gov.