Clinical Research Directory

Inclusion Criteria: Inclusion criteria (all must be present): 1. 18 ≤ Age ≤ 85 2. PVC burden ≥ to 10% regardless of current or preexisting antiarrhythmic drug intake (for instance, a patient under betablocker therapy because of his PVCs or hypertension can be included) 3. Asymptomatic status 4. Normal (\>or= 55%) LVEF. Patients with underlying cardiomyopathy can be included as long as LV function remains preserved. 5. Signed informed consent Exclusion criteria (any of them): 1. Pregnant woman or Female of childbearing potential without effective method of birth control or nursing woman. 2. Patients that can't undergo MRI study 3. De novo requirement for antiarrhythmic drug prescription for another indication (e.g. atrial fibrillation…) 4. The physician already decided that the patient requires drug initiation or escalation; 5. Ischemic cardiomyopathy requiring revascularization (PCI or surgery) 6. History of LV dysfunction 7. Participation in another research involving the human person 8. Patient under legal protection 9. Non affiliation to a social security scheme