DISCUSSION
The present study is the first report to directly compare the very long-term clinical outcome, spanning 8-years, between linear ablation (roof and MI lines) and EGM-guide ablation in addition to PVI for PsAF. Using a propensity score-matched analysis, we demonstrate superiority of linear ablation to EGM-guided ablation following single and multiple procedures. In addition, in addition to AF duration, EGM-guided ablation was an independent predictor of arrhythmia recurrence after the index ablation procedure.