Low-Dose Ibutilide Combined with Catheter Ablation of Persistent Atrial Fibrillation: Procedural Impact and Clinical Outcome

Figure 5

Kaplan–Meier plots depicting atrial tachyarrhythmia-free survival at 2 years after the first procedure. Persistent atrial fibrillation (AF) was terminated by circumferential pulmonary vein isolation (CPVI) alone (blue line), CPVI combined with left atrial modification guided by low-dose ibutilide (red line), and cardioversion (CV) (green line).