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Kaplan-Meier Estimates of 3-Year Freedom from Atrial Arrhythmia Recurrence. The recurrence of atrial arrhythmia in both groups after the last ablation procedure is shown. The electrical isolation of PLSVC was determined based on the electrophysiological study for the provocation of arrhythmogenic triggers initiating AF. No significant difference in arrhythmia recurrence was observed between the two groups. PLSVC, persistent left superior vena cava; AF, atrial fibrillation.
