2.5 Follow-up
Antiarrhythmic drugs were resumed after ablation at the discretion of
the attending physician. Twelve-lead electrocardiography was performed
for all patients at 1, 3, and 6 months, and 24-hour electrocardiographic
monitoring was performed every 3 to 6 months. AF occurring 3 months or
more after the ablation procedure and lasting at least 30 seconds was
diagnosed as AF recurrence.