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Clinical Trials/NCT07361575
NCT07361575Not yet recruitingNot Applicable

A Single-blind, Randomized Study Comparing the Quality of Colon Cleanliness With Prepackaged LRD (Low-residue Diet) vs. Guided (POG).

Clinique Paris-Bercy1 site in 1 country230 target enrollmentStarted: January 30, 2026Last updated:
Interventions

Trial Snapshot

Phase
Not Applicable
Status
Not yet recruiting
Sponsor
Enrollment
230
Locations
1
Primary Endpoint
Boston Score

Study Overview

Brief Summary

Low-residue diet (LRD) in patient improves the quality of the colon cleanliness and thus the adenoma detection rate (ADR). This is a key criterion in colonoscopy screening for colorectal cancer (CRC). The benefit of an LRD lasting more than 24 hours before colonoscopy has not been demonstrated compared to a 24-hour LRD.

Few studies have evaluated the benefit of a prepackaged 24-hour LRD compared to simply receiving oral and written LRD instructions during a consultation.

The aim of the study is to evaluate the usefulness of a prepackaged LRD (Colobox®) compared to simple LRD instructions on colon cleanliness (Boston score) in patients examined by endoscopy.

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Prevention
Masking
Single (Care Provider)

Eligibility Criteria

Ages
18 Years to — (Adult, Older Adult)
Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Patient of one of the investigators for total colonoscopy (no prior colonic surgery);
  • Patient aged 18 years or older;
  • Patient classified as ASA 1, ASA 2, or ASA 3;
  • Not participating in any other current clinical trial;
  • Free, informed, and signed consent;
  • Patient affiliated with or a beneficiary of a social security scheme, according to Article L.1124-1 of the French Public Health Code;

Exclusion Criteria

  • Patient taking major psychotropic medications;
  • Patient with uncontrolled diabetes;
  • Patient with coagulation abnormalities preventing polypectomy: PT <50%, Platelets <50,000/mm³, current effective anticoagulation therapy (clopidogrel, prasugrel, or ticagrelor);
  • Patient referred for removal of a known polyp;
  • Chronic inflammatory bowel disease;
  • Known colonic stenosis;
  • Diverticulitis of less than 6 weeks duration;
  • Pregnant, parturient, or breastfeeding woman;
  • Patient deprived of liberty by administrative or judicial order, or under guardianship or limited legal protection;
  • Patient unable to understand the objectives and constraints of the study.

Arms & Interventions

Patient with LRD prepared 24 hours before colonoscopy

Experimental

The LRD prepared is Colobox

Intervention: Colonoscopy (Procedure)

Patient with LRD prepared 24 hours before colonoscopy

Experimental

The LRD prepared is Colobox

Intervention: Questionnaires (Other)

Patient with LRD prepared 24 hours before colonoscopy

Experimental

The LRD prepared is Colobox

Intervention: Pre-colonoscopy diet by following a special preparation, Colobox. (Other)

Patients with not prepared LRD, 24 hours before colonoscopy

Active Comparator

The LRD is only explained orally and in writing to the patient

Intervention: Colonoscopy (Procedure)

Patients with not prepared LRD, 24 hours before colonoscopy

Active Comparator

The LRD is only explained orally and in writing to the patient

Intervention: Questionnaires (Other)

Patients with not prepared LRD, 24 hours before colonoscopy

Active Comparator

The LRD is only explained orally and in writing to the patient

Intervention: Pre-colonoscopy diet according to the investigator's oral instructions (Other)

Outcomes

Primary Outcomes

Boston Score

Time Frame: 1 day

A 9-point system, helps them see how clean a patient's large intestine is during a colonoscopy. This scale divides the large intestine into three parts: right, middle, and left. Each part can score from : BBPS = 0 (per segment) : unprepared colon segment with mucosa not seen because of solid stool that cannot be cleared. BPPS=3 (per segment) : entire mucosa of the colon segment seen well, with no residual staining, small fragments of stool, or opaque liquid.

Secondary Outcomes

No secondary outcomes reported

Investigators

Sponsor
Clinique Paris-Bercy
Sponsor Class
Other
Responsible Party
Sponsor

Study Sites (1)

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