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.