Triggers and Risk Factors for Recurrence of Atrial Arrhythmias With the Use of Long-term Monitoring

Inclusion Criteria: * Patients with previously diagnosed paroxysmal or persistent atrial fibrillation who are in sinus rhythm at inclusion time. * An informed consent is signed by the patient. Exclusion Criteria: * The qualifying episode of AF has never been documented in ECG or Holter ECG monitoring. * Patients with atrial fibrillation, atrial flutter or atrial tachycardia at inclusion time. * Patients with permanent atrial fibrillation or permanent atrial flutter. * Age \<18 years. * Patients with a pacemaker or an implanted cardiovert-defibrillator. * Patients suffering from dementia or other severe neurological disorders and thus incapable to participate. * Patients who present with antisocial behavior and/or do not want to participate in the study.