Study End Points
The primary end point of the study was the atrial arrhythmia-free survival (AF, AT, or AFL) after the repeat ablation procedure. Any symptomatic or asymptomatic AF or AT/AFL was qualified as an arrhythmia recurrence if it lasted 30 seconds or longer and was documented by 12-lead ECG, surface ECG rhythm strips, or 24-hour Holter, after a blanking period of 90 days after the 1st repeat ablation.