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A simple ultrasound score may flag kidney danger after heart surgery

NCT ID NCT07805564

Knowledge-focused Sponsor: Hanoi Medical University Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now This study
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.
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Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
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 Results may not be published yet.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)

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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

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Status unknown
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First seen Sep 04, 2026 · Last updated Sep 04, 2026

Summary

This study tests whether a bedside ultrasound tool called the VExUS score can predict acute kidney injury after open-heart surgery. The score measures fluid buildup in the veins, which may stress the kidneys. Researchers will follow 135 adults undergoing heart surgery with a heart-lung machine, checking the VExUS score at set times after surgery. They will also compare the score with detailed heart and lung measurements in a subgroup of patients to see if it truly reflects fluid status.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
VExUS score, a bedside ultrasound assessment of venous congestion
What this could lead to
If the VExUS score proves reliable, doctors could use a simple ultrasound to spot patients at high risk of kidney injury after heart surgery, allowing earlier intervention.
What could go wrong
This is an observational study, so it can only show links, not cause and effect. The results may not apply to all patients, and the score's accuracy needs confirmation in larger trials.

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.

Participants

About 135 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2026

Expected to finish

Dec 2027

An estimate. End dates often move.

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.

Who is studied

The study population consists of adult patients undergoing elective or emergency open heart surgery requiring cardiopulmonary bypass at Hanoi Medical University Hospital. Eligible patients will be admitted postoperatively to the Cardiac Surgical Intensive Care Unit and followed for the development of acute kidney injury and other postoperative complications

Ages

18 years and older

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: * Adult patients aged 18 years or older * Undergoing elective or emergent open-heart surgery with the use of Cardiopulmonary Bypass (CPB) Exclusion Criteria: * Severe tricuspid regurgitation End-stage chronic kidney disease (estimated glomerular filtration rate below 15 mL per minute per 1.73 square meters) * Preoperative use of an intra-aortic balloon pump (IABP) * Preoperative use of extracorporeal membrane oxygenation (ECMO) or a ventricular assist device (VAD) * Liver cirrhosis, portal hypertension, or portal vein thrombosis * Refusal to participate by the patient or the patient's legally authorized representative

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Conditions

The condition(s) this trial relates to.

acute kidney injury Hyperemia

As listed by the trial registrant

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

Acute kidney injury after open heart surgery Venous congestion after open heart surgery

How to take part

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  1. The places running it

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  2. 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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  3. A doctor treating you

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Contacts and locations

Locations

  • Hanoi Medical University Hospital

    RECRUITING

    Hanoi, Hanoi, 10000, Vietnam