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Smartwatch could spot silent heart rhythm problem after surgery

NCT ID NCT05573633

Diagnosis Sponsor: Centre Hospitalier Universitaire, Amiens Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether a smartwatch (Withings ScanWatch) can diagnose atrial fibrillation that occurs after heart surgery better than standard monitoring. About 324 adults who had on-pump heart surgery will either use the smartwatch or receive usual care. The goal is to catch silent, symptom-free episodes that might otherwise be missed, potentially reducing the risk of stroke and other complications.

What this could mean

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

Active substance
smartwatch (Withings ScanWatch) with 1-lead ECG
What this could lead to
If successful, this could show that smartwatches are a reliable way to catch hidden heart rhythm problems after surgery, potentially preventing strokes and other complications.
What could go wrong
This is a single-center trial with 324 participants, so results may not apply to all patients. The smartwatch may miss some episodes or cause false alarms, and it requires patients to be able to use it correctly.

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 324 people

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

Started

Oct 2022

Expected to finish

Jul 2028

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: * Adult patient (\>18 years old) * The patient was hospitalized at Amiens University Hospital for on-pump cardiac surgery. * The patient has had a recent on-pump cardiac surgery (\< 96h) * Patient with the motor and cognitive abilities to perform a 1-lead ECG with the smartwatch * The patient was transferred to the cardiac surgery department of Amiens University Hospital. * The beneficiary of a social security plan * Signature of the consent to participate in the study Exclusion Criteria: * History of AF * Need for rhythmic monitoring by telemetry in cardiac intensive care for atrioventricular block and rapid supra and ventricular rhythm disorder (\>140 bpm). * An external pacemaker connected to epicardial electrodes depends on ventricular and atrial pacing. * Patients already included in an interventional clinical research protocol may alter the incidence of POAF. * Pregnant woman

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Conditions

The condition(s) this trial relates to.

atrial fibrillation

As listed by the trial registrant

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

Atrial fibrillation Cardiac surgery

How to take part

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  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

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Contacts and locations

Locations

  • CHU Amiens Picardie

    RECRUITING

    Amiens, France

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