Key result
Maximum Ablation Index was significantly associated with survival free from focal atrial tachycardia recurrence (p=0.001), whereas mean Ablation Index was not.
Why the study?
Ablation Index had been associated with catheter ablation outcomes for multiple arrhythmias, but had never been systematically assessed in catheter ablation of focal atrial tachycardias.
Does Ablation Index predict focal AT-free survival in patients undergoing catheter ablation for focal atrial tachycardia?
Cohort (n=45)
Yes
Does Ablation Index predict focal AT-free survival in patients undergoing catheter ablation for focal atrial tachycardia?
p-value: p=0.001
Maximum Ablation Index is a strong procedural predictor of freedom from focal atrial tachycardia recurrence after catheter ablation, which may help standardize the procedural approach.
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AI values associated with lower focal AT recurrence; hypothesis-generating, needs prospective validation before guiding ablation.
Compagnucci et al. (2022) conducted a cohort in Focal atrial tachycardia (n=45). Maximum Ablation Index was evaluated on Focal AT-free survival (p=0.001). Maximum Ablation Index was significantly associated with survival free from focal atrial tachycardia recurrence (p=0.001), whereas mean Ablation Index was not.
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