Fig. 3From: Impact of baseline impedance of pulmonary vein antrum on success of catheter ablation for paroxysmal atrial fibrillation guided by ablation indexFreedom from recurrence of the low-impedance group and high-impedance group. Kaplan–Meier curve showed that cumulative freedom from recurrence was higher in low-impedance group than that in high-impedance group (log-rank test, P = 0.02)Back to article page