Cryoballoon Ablation of Pulmonary Veins After Failed RF Ablation in Patients With Paroxysmal AF

Cryoballoon Ablation of Pulmonary Veins After Failed Radiofrequency Ablation in Patients With Paroxysmal Atrial Fibrillation

The aim of this prospective randomized double-blind study was to compare the efficacy and safety of cryoballoon ablation with the RF approach in the treatment of paroxysmal AF after failed first radiofrequency ablation.

Inclusion Criteria:

• Previous failed first radiofrequency ablation procedure (only circumferential PV isolation without linear lesions) in patients referred for second catheter ablation of AF
• > 3 months after first PVI

Exclusion Criteria:

• Congestive heart failure
• Ejection fraction <35%
• Left atrial diameter >60 mm