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Can deeper anesthesia shield the heart during bypass surgery?

NCT ID NCT07770269

Knowledge-focused Sponsor: AHEPA University Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 18, 2026 · Last updated Aug 20, 2026 · Updated 2 times

Summary

This study looks at how the depth of anesthesia during cardiac surgery might influence heart function. Adults having elective on-pump heart surgery are randomly assigned to either standard or deeper anesthesia, guided by a brain monitor. Doctors measure heart performance using ultrasound and pressure readings at key points during the operation, and then track recovery over a year. The goal is to see if anesthesia depth affects how well the heart pumps after surgery.

What this could mean

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

Active substance
Two levels of anesthesia depth guided by the Bispectral Index (BIS): standard (45-55) versus deeper (30-35), using propofol and remifentanil.
What this could lead to
If successful, this could help tailor anesthesia depth during cardiac surgery to better protect heart function and improve recovery.
What could go wrong
This is a small, early-stage study, so results may not apply broadly. Deeper anesthesia could carry risks, and the findings may not change clinical practice.

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

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

About 70 people

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

Started

Jan 2026

Expected to finish

Nov 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.

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: * Adults aged 18 years or older, irrespective of sex. * Scheduled to undergo elective cardiac surgery involving cardiopulmonary bypass (on-pump surgery). * Anticipated adequate acoustic window for transthoracic echocardiography. * Provision of written informed consent. Exclusion Criteria: * \- Emergency or unscheduled cardiac surgery. * Cardiac surgery without cardiopulmonary bypass (off-pump surgery). * Refusal or inability to provide written informed consent.

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Conditions

The condition(s) this trial relates to.

Cardiac Output, Low heart disorder

As listed by the trial registrant

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

Cardiac function Cardiac surgery Heart disease Perioperative cardiac dysfunction

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

  • AHEPA University General Hospital of Thessaloniki

    RECRUITING

    Thessaloniki, 54636, Greece

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