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Common sedative may stop dangerous heart rhythm after surgery

NCT ID NCT07482540

Prevention Sponsor: Ain Shams University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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)

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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study tests whether the sedative drug dexmedetomidine can prevent new-onset atrial fibrillation (a fast, irregular heartbeat) in the days after mitral valve surgery. Researchers will randomly give 140 adults either the drug or a placebo during and after surgery. The goal is to see if the drug lowers the chance of developing this heart rhythm problem, which can cause complications.

What this could mean

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

Active substance
Dexmedetomidine
What this could lead to
If it works, this could provide a simple way to prevent a common and serious heart rhythm problem after mitral valve surgery.
What could go wrong
This is a small, early-stage trial (140 people) that hasn't started recruiting yet. The drug may not reduce AFib risk more than placebo, and side effects like low heart rate are possible.

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 140 people

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

Expected to start

Jun 2026

An estimate. Start dates often move.

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.

Ages

21 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 21 years or older. American Society of Anesthesiologists (ASA) physical status II-III. Patients able to provide written informed consent. Exclusion Criteria: History of cardiac arrhythmias: atrial fibrillation or any other clinically significant cardiac tachyarrhythmias. Any degree of atrioventricular block or presence of permanent pacemaker and bradycardia (heart rate \< 60 beats/min) or hemodynamic instability. Emergency mitral valve surgery. Left ventricular dysfunction (ejection fraction \< 55%) Ischemic heart disease patients. Severe hepatic or renal impairment. Known hypersensitivity or contraindication to dexmedetomidine. Chronic use of class I or class III anti-arrhythmic drugs

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Conditions

The condition(s) this trial relates to.

atrial fibrillation prevention target

As listed by the trial registrant

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

Atrial fibrillation New onset

How to take part

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  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

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  2. A doctor treating you

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