Clinical trial Recruiting at 1 site Observational Ages 18 and up

Using a connected watch to monitor heart rhythm after cardiac surgery

Official title: Single-center Pilot Study to Evaluate the Interest of a Hybrid Connected Watch for Heart Rate Monitoring in Postoperative Cardiac Surgery

Run by Nantes University Hospital · NCT05664308 · Data updated 2026-11-12

This study is testing if a connected watch can help monitor heart rhythm in patients who have had heart surgery and experienced irregular heartbeats afterward.

More Atrial Fibrillation trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment106 (estimated)
SponsorNantes University Hospital
Academic / other
Locations1 site (Nantes, Loire Atlantique)
StatusRecruiting
StartedMarch 19, 2024
Main results expectedMarch 19, 2028
Study endsMarch 19, 2029
Registry record updatedSeptember 29, 2026
Trial IDNCT05664308 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults undergoing major cardiac surgery who develop new-onset postoperative atrial fibrillation and can commit to 12 months of monitoring.

Probably not a fit

Patients with pre-existing atrial fibrillation or those unable to independently perform ECG measurements will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational pilot study aims to utilize a hybrid connected watch for monitoring cardiac rhythm in patients who have experienced postoperative atrial fibrillation (POAF) following major cardiac surgery. The study will track the absence of recurrence or maintenance of sinus rhythm over a 12-month period, providing valuable data to assist cardiologists in managing these patients. Participants will undergo clinical follow-up and ongoing ECG monitoring to assess their heart rhythm status. The study is conducted at a single center, Nantes University Hospital.

Why it matters

Potential benefit: If successful, this approach could enhance the management of postoperative atrial fibrillation, leading to better patient outcomes and reduced complications.

How similar studies have gone: While the use of connected devices for monitoring cardiac conditions is gaining traction, this specific approach in the postoperative setting is relatively novel and has not been extensively tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Major with an indication for conventional cardiac surgery with de novo postoperative AF onset.
* Agreeing to participate in the study and having signed an informed consent.
* Agreeing to undergo 12 months of postoperative monitoring.

Exclusion Criteria:

* Patient with pre-operative AF
* Patient who does not have a smartphone compatible with the connected watch.
* Patient unable to perform an ECG measurement independently.
* Patient with a physical constraint to the measurement (arteriovenous fistula...)
* Minors
* Pregnant or breast-feeding women
* Adults under guardianship, under curatorship
* Patients whose life expectancy is less than 1 year
* Patients participating in another therapeutic trial likely to impact the evaluation criteria of the MONHYCARD study
* Contraindication to long-term anticoagulants
* Patients implanted with a mechanical valve prosthesis pre-operatively or after surgery

Where it's running

  • CHU Nantes
    Nantes, Loire Atlantique, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.