Observational Clinical Study for the Evaluation of Left Ventricular Filling Pressures Using Apple Watch and 12-Lead ECG Optimized by an Artificial Intelligence Algorithm

Inclusion Criteria: 1. Patient aged 18 years or older, capable of providing informed consent and wishing to participate in the clinical investigation 2. Patient referred outpatient for a conventional echocardiogram 3. Patient hospitalized in a medical or surgical unit, including the cardiac intensive care unit and the cardiac surgery postoperative unit, and referred for a conventional echocardiogram 4. Emergency department patient referred for a conventional echocardiogram 5. Patient who has read the information leaflet and given their written consent to participate by dating and signing the informed consent form before any procedure related to the clinical investigation 6. Patient covered by a social security scheme Exclusion Criteria: 1. Patient with complex congenital heart disease 2. Heart transplant recipient 3. Patient with a history of mitral valve surgery (mechanical valve, bioprosthesis, annuloplasty) 4. Patient with a pacemaker/defibrillator 5. Patient with significant degenerative mitral annular calcification (MAC) 6. Subject related to the investigator or any other staff member directly involved in the clinical investigation 7. Patient unable to give consent, minor patient, or legally protected adult patient