Key result
Radiofrequency ablation was associated with pulmonary vein stenosis in 30% of patients, whereas ultrasound ablation resulted in no stenosis (0%).
Why the study?
Does ultrasound ablation result in less pulmonary vein stenosis compared to radiofrequency ablation, and do patients with atrial fibrillation have different pulmonary vein anatomy compared to controls?
Population
90 subjects total. Group 1: 61 patients assessed following pulmonary vein ablation. Group 2: 15 patients…
Comparison
Radiofrequency ablation / Presence of atrial… vs Ultrasound ablation / Controls without atrial…
Design
Cohort
Authors
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Ultrasound ablation may reduce stenosis risk; leaves open whether randomized trials confirm clinical benefit.
Observational (n=90)
Does ultrasound ablation result in less pulmonary vein stenosis compared to radiofrequency ablation, and do patients with atrial fibrillation have different pulmonary vein anatomy compared to controls?
Absolute Event Rate: 30% vs 0%
Computed tomography demonstrates that radiofrequency ablation frequently causes pulmonary vein stenosis compared to ultrasound ablation, and that baseline pulmonary vein ostium size does not differ between patients with atrial fibrillation and controls.
Perez‐Lugones et al. (2003) conducted an observational in Atrial Fibrillation (n=90). Radiofrequency ablation vs. Ultrasound ablation was evaluated on Pulmonary vein stenosis. Radiofrequency ablation was associated with pulmonary vein stenosis in 30% of patients, whereas ultrasound ablation resulted in no stenosis (0%).
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