Interest of a Hybrid Connected Watch for Cardiac Rhythm Monitoring in Post-operative Cardiac Surgery

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