AI-powered ECG Analysis Using Willem™ Software in High-risk Cardiac Patients (WILLEM)

Inclusion Criteria:

• Patient presenting relevant cardiac arrhythmias and cardiac patterns (includingsupraventricular tachycardias, abnormal ECG patterns, ventricular tachycardias,ventricular fibrillation, pulseless electrical activity or asystole among others)that have been recorded with at least one short-term ECG medical device according toguidelines with ≥1 signal-channel.

• Patient with suspected or diagnosed acute/chronic cardiac diseases (includingpatients with heart failure, patients with history of cardiac arrhythmias, patientswith probable coronary artery diseases, patients with cardiomyopathies, patientswith pacemakers or implantable cardioverter-defibrillators (ICD), patients withindication of pacemaker or ICD in current or short-term phase, patientsparticipating in other interventional clinical investigation, patients withhemodynamic instability or acute coronary syndromes, pregnant patients, patientswith cancer and chemotherapy, patients with life-expectancy lower than 24 months,patients with in or out-of-hospital cardiac arrest with ventricular fibrillation asfirst documented rhythm).

• At least one ECG tracing that can be exported in raw data.

• Signed informed consent. Patients unable to consent, it will be requested to anauthorized relative.

Exclusion Criteria:

• Unwillingness or inability to sign study written informed consent.

• Unavailable or suboptimal quality of the electrocardiographic signal in raw data.