Follow-up:
Post procedural follow up was according to standard of care. The heart rhythm service routinely followed patients at three months post procedure. 12-lead ECG and 48-hour Holter monitor were ordered routinely as standard of care at 3 months in all AFL patients. Control patients had routine 12 lead ECG, and monitoring was ordered if symptoms recurred. Patients with recurrence of typical atrial flutter were offered a repeat procedure, while patients diagnosed with new atrial fibrillation were managed with either medical therapy or a left atrial ablation at the discretion of the electrophysiologist and considering patient’s wishes. Recurrence of SVT prompted an offer of repeat ablation. Follow-up data were collected retrospectively by chart review and by contacting physician offices.