Key result
Laser balloon ablation linked to ~2-fold higher rate of complete anatomical PVI vs RFA.
Why the study?
The anatomical characteristics of scar formation after visual-guided laser balloon versus radiofrequency pulmonary vein isolation have not been directly compared using late-gadolinium-enhanced cardiac magnetic resonance imaging.
Cohort (n=30)
Absolute Event Rate: 39% vs 19%
p-value: p=0.025
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May enhance anatomical isolation rates; leaves open whether this improves clinical outcomes versus radiofrequency.
Ventura et al. (2018) conducted a cohort in Paroxysmal or early persistent drug resistant atrial fibrillation (n=30). Visual-guided laser balloon ablation vs. Radiofrequency (RF) ablation (historical group) was evaluated on Complete anatomical PVI (circumferential scar around PV, without gaps) (p=0.025). Visual-guided laser balloon ablation achieved more frequent complete anatomical pulmonary vein isolation compared to historical radiofrequency ablation (39% vs 19% of PVs, P=0.025).
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