Side Specific Withdrawal Times for Colonoscopy: Impact on Adenoma Detection in the Proximal and Distal Colon

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT02819492

Acronym

SNOWCAT

Enrollment

500

Registered

2016-06-30

Start date

2014-11-30

Completion date

2017-04-30

Last updated

2017-04-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Colon Adenoma

Keywords

Adenoma, Colonoscopy, Withdrawal, Proximal, Observation Time

Brief summary

Adenoma detection in the main goal of screening colonoscopy. In order to detect adenomas it is mandatory to spend a long enough time investigating the colonic mucosa. A minimum observation time of 6 minutes has been proposed as a quality criterion for screening colonoscopy. However, different locations of the colon (proximal, distal) may require specific observation time periods. The colon can be divided into a proximal (right) and distal (left) part. Until now, it is unclear whether observation time has a significant impact on adenoma detection in both parts of the colon. The aim of this study therefore is to conduct a trial in which side-specific observation times and adenoma detection rates are measured in order to investigate this correlation in particular for the right colon.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

40 Years to 90 Years

Healthy volunteers

Inclusion criteria

* indication for colonoscopy * age ≥ 40 years

Exclusion criteria

* American Society of Anesthesiologists class IV or higher * pregnant women * indication for colonoscopy: inflammatory bowel disease * indication for colonoscopy: polyposis syndrome * indication for colonoscopy: emergency colonoscopy e.g. acute bleeding * contraindication for polyp resection e.g. patients on warfarin

Design outcomes

Primary

Measure	Time frame	Description
Adenoma detection rate in the proximal colon	up to 2 weeks (participants will be followed for the duration of hospital stay or outpatient treatment, an expected average of 2 weeks)	After obtaining the histopathological diagnosis of resected polyps (approximately 3 -6 days) it can be determined whether the resected polyp contained adenomatous histology or not.

Secondary

Measure	Time frame	Description
Polyp detection rate	up to one day	a maximum of one day is expected for colonoscopy procedures

Countries

Germany

Outcome results