Clinical trial Recruiting at 1 site Observational Ages 18 and up

Investigating bowel preparation quality before colonoscopy

Official title: Identification of Risk Factors for Inadequate Bowel Preparation Before Colonoscopy and Construction of a Predictive Model: a Nationwide Multicenter Prospective Study

Run by Changhai Hospital · NCT06878378 · Data updated 2026-11-12

This study is testing how well different bowel prep methods work for people getting a colonoscopy to see if new guidelines can help improve the process.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment10000 (estimated)
SponsorChanghai Hospital
Academic / other
Locations1 site (Shanghai, Shanghai Municipality)
StatusRecruiting
StartedFebruary 21, 2025
Main results expectedFebruary 1, 2026
Study endsFebruary 1, 2026
Registry record updatedMarch 18, 2025
Trial IDNCT06878378 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include patients over 18 years old who are scheduled for a colonoscopy and can provide informed consent.

Probably not a fit

Patients with severe health conditions, recent surgeries, or those unable to comply with bowel preparation protocols may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to assess the current bowel preparation protocols and their effectiveness across various hospitals in China, particularly in light of the updated 2023 guidelines. It will identify risk factors that lead to inadequate bowel preparation in patients scheduled for colonoscopy. The study involves developing a standardized questionnaire for data collection, conducting audits of preparation practices, and training healthcare providers on compliance with the new guidelines. Ultimately, it seeks to create a risk prediction model and propose personalized bowel preparation strategies based on individual patient characteristics.

Why it matters

Potential benefit: If successful, this study could lead to improved bowel preparation quality, enhancing the effectiveness of colonoscopy procedures for patients.

How similar studies have gone: While there have been studies on bowel preparation, this specific approach focusing on risk factors and standardization in China is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients aged \>18 years, regardless of gender, scheduled for colonoscopy
* Written informed consent has been obtained

Exclusion Criteria:

* History of acute myocardial infarction (within 6 months), severe cardiac/hepatic/renal insufficiency, or psychiatric disorders
* Current use of anticoagulants (e.g., aspirin, warfarin) or presence of coagulation disorders
* Pregnancy or lactation;
* History of inflammatory bowel disease or acute intestinal infection within the past 2 weeks;
* History of colorectal cancer, familial adenomatous polyposis (FAP), or Peutz-Jeghers syndrome;
* History of intestinal obstruction, perforation, stricture, or other conditions precluding completion of colonoscopy;
* Non-compliance with bowel preparation protocols (e.g., ingestion of \<80% of prescribed polyethylene glycol (PEG) electrolyte solution);
* Severe hearing impairment, cognitive dysfunction, or inability to cooperate with the study;
* Prior enrollment in this study with a repeat colonoscopy appointment;
* Current participation in other clinical trials or participation in any trial within the preceding 60 days;
* Refusal to provide written informed consent.

Where it's running

  • Changhai Hospital
    Shanghai, Shanghai Municipality, China
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.