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New blood test may predict bleeding risk after heart surgery

NCT ID NCT07619261

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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)

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Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
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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

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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This status has not been confirmed recently, so it may be out of date.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 looks at whether a new test called T-TAS can help predict bleeding after heart surgery. Researchers will take blood samples from 30 adults before, right after, and 24 hours after surgery. They will compare T-TAS results with standard tests and track how much bleeding and blood transfusions each person needs. The goal is to see if T-TAS gives extra useful information to doctors.

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 30 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Feb 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

Adult patients undergoing elective or urgent cardiac surgery requiring cardiopulmonary bypass at a tertiary academic cardiac surgery center. Participants are recruited prospectively during routine perioperative clinical care and undergo perioperative assessment of flow-based platelet function using the Total Thrombus-formation Analysis System (T-TAS).

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: 1. Adults aged 18 years or older 2. Undergoing elective or urgent cardiac surgery requiring cardiopulmonary bypass 3. Ability to provide written informed consent Exclusion Criteria: 1. Cardiac surgery performed without cardiopulmonary bypass 2. Emergency cardiac surgery 3. Preoperative anticoagulation not reversed at the time of surgery 4. Refusal or withdrawal of informed consent 5. Known pregnancy

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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How to take part

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