• Age 18 years and older

• History of symptomatic persistent AF Persistent AF - defined as continuous AF that is sustained more than 7 days but less than 12 months. Episodes of AF of ≥ 48 hours duration in which a decision is made to terminate with electrical or pharmacological cardioversion prior to 7 days will also be classified as persistent AF

• AF must be documented at least once either by ECG, event monitoring, loop recorder, telemetry, trans-telephonic monitoring, pacemaker or cardiac defibrillator readouts within 24 months prior to enrollment

• Currently on anticoagulation therapy as indicated per local guidelines, which is considered optimal for stroke prevention in the opinion of the investigator

• Implanted dual chamber pacemaker/ICD capable of monitoring atrial arrhythmias or willingness to wear a 2 weeks event monitor if patient does not have a device capable of monitoring atrial arrhythmias

• Signed informed consent