Clinical trial · Interventional
Right-sided Retroflexion With Standard Adult Versus Pediatric Colonoscopes
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Why stopped (as posted): PI has left institution
Summary
Brief summary (as posted)
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.
Conditions
Conditions (1)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Colonic Neoplasms | Colon Neoplasm | ALIAS | 0.90 |
Interventions
Interventions (2)
| Intervention | Type | Mapped drug | Match |
|---|---|---|---|
| Retroflexion with the adult colonoscope. | Procedure | — | UNRESOLVED |
| Retroflexion with the pediatric colonoscope. | Procedure | — | UNRESOLVED |
Design
Arms and outcomes
Arms (2)
- type
- ACTIVE_COMPARATOR
- label
- Adult colonoscope
- description
- Use of the adult colonoscope.
- interventionNames
- Procedure: Retroflexion with the adult colonoscope.
- type
- ACTIVE_COMPARATOR
- label
- Pediatric colonoscope
- description
- Use of the pediatric colonoscope.
- interventionNames
- Procedure: Retroflexion with the pediatric colonoscope.
Primary outcomes (1)
- measure
- Percentage of cases in which right-sided retroflexion is successful with the adult and pediatric colonoscopes.
- timeFrame
- After 50% and 100% of patient enrollment is complete.
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
- Maximum age
- 100 Years
Show eligibility criteria text
Inclusion Criteria: * Adult patients over the age 18 undergoing screening or surveillance colonoscopy Exclusion Criteria: * Age less than 18 * Pregnant * History of ulcerative colitis or Crohn's disease * History of polyposis syndromes * History of colon resection * Colonoscopy being performed for diagnostic purposes (ie. bleeding, abdominal pain, alternating bowel habits)
References
Publications (0)
Data not yet available