Key result
Ablation index-guided posterior wall isolation in patients with persistent atrial fibrillation resulted in improved lesion formation and significantly lower maximum temperature rises compared to contact force-guided ablation.
Why the study?
Achieving left atrial posterior wall isolation is challenging because two continuous linear lesion sets are required.
Does ablation index-guided posterior wall isolation improve lesion formation and procedural efficacy compared to contact force-guided ablation in patients with persistent atrial fibrillation?
Observational (n=40)
Single-blind
No
Does ablation index-guided posterior wall isolation improve lesion formation and procedural efficacy compared to contact force-guided ablation in patients with persistent atrial fibrillation?
Absolute Event Rate: 25% vs 27%
p-value: p=<0.01
Ablation index-guided posterior wall isolation is safe, effective, and provides more consistent lesion formation with lower temperature rises compared to contact force-guided ablation in patients with persistent atrial fibrillation.
No takes yet. Share an insight, caveat, or question.
May guide safer PWI strategies in persistent AF; extends observational data but leaves open need for RCTs.
Sohns et al. (2020) conducted an observational in Persistent atrial fibrillation (n=40). Ablation index (AI) guided posterior wall isolation vs. Contact force (CF) guided posterior wall isolation (10-40 g) was evaluated on Maximum temperature at roof line (°C) (p=<0.01). Ablation index-guided posterior wall isolation in patients with persistent atrial fibrillation resulted in improved lesion formation and significantly lower maximum temperature rises compared to contact force-guided ablation.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: