Clinical follow-up
Anti-arrhythmic drugs (AADs) were prescribed after ablation according to
the discretion of the patient’s attending cardiologist. Twelve-lead
electrocardiograms (ECGs) were recorded at every follow-up visit or an
emergency visit due to symptoms suggestive of an arrhythmia recurrence.
In addition, 24-hour Holter ambulatory ECG monitoring was performed to
detect recurrence of paroxysmal arrhythmias. An arrhythmia recurrence
was defined as any documented atrial arrhythmia lasting longer than 30
seconds after the initial 90-day blanking period.