Could air make bladder exams clearer during active bleeding?
NCT ID NCT07618221
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether using air instead of saline to inflate the bladder during a flexible cystoscopy helps doctors find the source of bleeding in people with visible blood in their urine. Participants are randomly assigned to receive either an air-based or saline-based exam. The main goal is to see if air improves the ability to identify the bleeding source, with secondary measures including how quickly the source is found and patient comfort.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If air-based cystoscopy proves better, it could become a standard technique for diagnosing the cause of visible blood in urine, especially during active bleeding.
- What could go wrong
- This is a small, early-stage study with only 40 participants, so results may not apply broadly. Air insufflation carries a small risk of air embolism or bladder injury.
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
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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
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About 40 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jul 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2028
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Persistent macroscopic haematuria Grade III-V within 48 hours after hospitalisation * Age ≥ 18 years * Unexplained macroscopic haematuria requiring diagnostic cystoscopy * Ability to give written informed consent Exclusion Criteria: * Pregnant or lactating women * Haemodynamic instability or urgent need for operative or interventional cystoscopy (requiring cystoscopy within \< 24 hours of screening) * Ureteral stent in situ * Active urinary tract infection * Transurethral resection of the bladder (TURB) or prostate (TURP) within the last 6 weeks
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Kantonsspital Baden AG, Department of Urology
Baden, Canton of Aargau, 5404, Switzerland