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Water vs air: new colonoscopy trick may catch hidden polyps

NCT ID NCT07456007

Knowledge-focused Sponsor: Dalin Tzu Chi General Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested a new colonoscopy method that uses water instead of air in the right part of the colon to see if it helps find more polyps (which can turn into cancer). About 414 adults getting a routine colonoscopy took part. The goal was to improve detection without making the procedure longer.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

414 people

The number who actually took part.

Started

Jun 2020

Finished

Jan 2026

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

40 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Adults aged 40 to 80 years. * Patients undergoing screening, surveillance, or diagnostic colonoscopy. * Colonoscopy performed by participating endoscopists. * Ability to provide written informed consent. Exclusion Criteria: * Inability or unwillingness to provide informed consent. * Age \< 40 years or \> 80 years. * History of colorectal surgery (e.g., partial colectomy). * Known or suspected colorectal cancer. * Known inflammatory bowel disease (e.g., ulcerative colitis or Crohn's disease). * Planned therapeutic colonoscopy (e.g., polypectomy). * Inadequate bowel preparation. * Known or suspected colonic obstruction or severe stricture. * Massive ascites. * Severe comorbid conditions (e.g., renal failure). * Emergency colonoscopy.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Right colon adenoma detectation rate Water exchange colonoscopy

Contacts and locations

Locations

  • Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation

    Chiayi City, Chiayi, 62247, Taiwan