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Oxygen fluctuations during bypass surgery could predict patient outcomes

NCT ID NCT06840327

Knowledge-focused Sponsor: University Hospital, Toulouse 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 29, 2026 · Last updated Jun 30, 2026 · Updated 1 time

Summary

This study investigates whether variations in oxygen levels during heart surgery with a heart-lung machine can help predict how well patients recover. Researchers will collect blood and tissue samples from 120 adults undergoing bypass surgery and track their recovery using a severity score. The goal is to find biological markers that could guide better care after surgery.

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 successful, this could help doctors predict which heart surgery patients may have complications, leading to better post-operative care.
What could go wrong
This is an observational study, not a treatment trial. It may not find a clear link between oxygen levels and outcomes, and results may not apply to all heart surgery patients.

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 120 people

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

Started

Oct 2025

Expected to finish

Oct 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 undergoing scheduled cardiac surgery under CEC for coronary bypass surgery with saphenous vein harvesting at Toulouse University Hospital

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: Patients over 18 years of age Scheduled cardiac surgery patients undergoing bypass surgery with saphenous vein harvesting. Patients able to understand the protocol; Patients able to express non-opposition to participating in the study Patients affiliated to a social security system or equivalent. Exclusion Criteria: Emergency surgery patients. Pregnant or breast-feeding women. Patients deprived of their freedom or under legal protective measures.

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As listed by the trial registrant

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

Cardiac surgery Extracorporeal circulation

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

  • UHToulouse

    RECRUITING

    Toulouse, France

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