Key result
Cryoballoon ablation for redo pulmonary vein isolation resulted in 43% of patients being AF-free at 1 year compared to 58% with radiofrequency ablation (P=0.06).
Why the study?
Does cryoballoon redo ablation reduce recurrence of atrial tachyarrhythmia compared to radiofrequency redo ablation in patients with paroxysmal atrial fibrillation after a failed initial RF ablation?
RCT (n=80)
patient-blind
randomized
Does cryoballoon redo ablation reduce recurrence of atrial tachyarrhythmia compared to radiofrequency redo ablation in patients with paroxysmal atrial fibrillation after a failed initial RF ablation?
Absolute Event Rate: 43% vs 58%
p-value: p=0.06
For patients requiring a redo pulmonary vein isolation for recurrent paroxysmal atrial fibrillation, radiofrequency ablation appears more effective and safer than cryoballoon ablation.
No takes yet. Share an insight, caveat, or question.
Radiofrequency may be preferred for redo PVI; challenges cryoballoon efficacy and warrants larger trials.
Pokushalov et al. (2012) conducted an RCT in Paroxysmal Atrial Fibrillation (n=80). Cryoballoon ablation vs. Radiofrequency ablation was evaluated on recurrence of atrial tachyarrhythmia, including AF and left atrial flutter/tachycardia, after a second ablation procedure at 1 year of follow-up (p=0.06). Cryoballoon ablation for redo pulmonary vein isolation resulted in 43% of patients being AF-free at 1 year compared to 58% with radiofrequency ablation (P=0.06).
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