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Heart surgery recovery: new study looks at hidden blood flow problems

NCT ID NCT07052461

Knowledge-focused Sponsor: University Hospital, Basel, Switzerland Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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.
Paused
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 Results may not be published yet.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)

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This status has not been confirmed recently, so it may be out of date.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 Aug 26, 2026 · Updated 2 times

Summary

This study looks at whether fluid buildup in veins (congestion) affects blood flow in the smallest blood vessels after planned heart surgery. Researchers will monitor 40 adults in the ICU using ultrasound and other tools. The goal is to better understand these connections, not to test a new treatment.

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 40 people

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

Started

Apr 2026

Expected to finish

Sep 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

Patients presenting for elective or urgent cardiac surgery. Urgent patients are defined as patients who have not been electively admitted for operation but who require intervention or surgery on the current admission for medical reasons. These patients cannot be sent home without a definitive procedure but do not require immediate emergency surgery.

Ages

18 years and older

Sex

Anyone

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: * Age ≥ 18 years * Elective or urgent (need for definitive procedure during hospitalisation, but not emergency intervention) cardiac surgery Exclusion Criteria: * Age \< 18 years * Pregnant women * Known severe chronic kidney disease (estimated glomerular filtration rate \<15 mL/min per 1.73 m2 or dialysis) * Renal or liver transplantation * Any known condition interfering with Doppler evaluation of the portal system (including known or suspected cirrhosis or portal vein thrombosis or huge abdominal emphysema). * Inability to consent to study * Emergency cardiac surgery

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Conditions

The condition(s) this trial relates to.

Hyperemia

As listed by the trial registrant

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

Fluid management Haemodynamic coherence Microcirculatory convection capacity Microcirculatory diffusion Postoperative cardiac surgery Venous congestion

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • University Hospital Basel

    RECRUITING

    Basel, 4031, Switzerland

More trials for these conditions

Other studies related to the condition(s) this trial covers.