Key result
Adjunctive posterior linear ablation with PVI is linked to ~77% lower atrial arrhythmia recurrence vs. PVI alone.
Why the study?
Durable conduction block across the left atrial roof is challenging with thermal energy, and while pulsed field ablation may enable a short posterior inter-antral line beyond PVI, its electrophysiological characteristics and clinical relevance remained uncertain.
Does pulmonary vein isolation plus posterior inter-antral linear ablation using pulsed field energy reduce atrial arrhythmia recurrence compared to pulmonary vein isolation alone in patients with paroxysmal atrial fibrillation?
Cohort (n=306)
No
Does pulmonary vein isolation plus posterior inter-antral linear ablation using pulsed field energy reduce atrial arrhythmia recurrence compared to pulmonary vein isolation alone in patients with paroxysmal atrial fibrillation?
Adjunctive posterior inter-antral linear ablation using pulsed field energy achieves reproducible conduction block and is associated with significantly lower short-term atrial arrhythmia recurrence compared to PVI alone in paroxysmal atrial fibrillation.
May reduce short-term recurrence after PVI in paroxysmal AF; leaves open need for randomized confirmation of adjunctive posterior ablation.
Introduction Durable conduction block across the left atrial roof remains challenging because of complex anatomy and limitations of thermal energy delivery. Pulsed field ablation (PFA) may enable a short posterior inter‐antral line as an adjunctive strategy beyond pulmonary vein isolation (PVI), providing linear conduction block at a more inferior posterior LA location than a conventional roofline. However, its electrophysiological characteristics and clinical relevance remain uncertain. Methods and Results In this single‐center, nonrandomized comparative cohort study, a prospectively enrolled cohort undergoing PVI plus posterior inter‐antral linear ablation was compared with contemporaneous patients undergoing PVI without additional left atrial ablation. The primary clinical endpoint was atrial arrhythmia recurrence beyond a 90‐day blanking period. Propensity score matching was the primary comparative analysis; inverse probability of treatment weighting and multivariable Cox regression were sensitivity analyses. Among 306 patients, 65 underwent posterior inter‐antral linear ablation and 241 underwent PVI alone. Posterior‐line ablation produced characteristic reciprocal pacing responses and a caudal‐to‐cranial posterior wall activation pattern consistent with conduction block. During a median follow‐up of 198 days, atrial arrhythmia recurrence occurred in 4 of 65 (6.2%) versus 38 of 241 (15.8%) patients. In the primary PSM analysis, posterior inter‐antral linear ablation was associated with lower recurrence (HR 0.23; 95% CI 0.07–0.78), with consistent results in sensitivity analyses. Conclusion Posterior inter‐antral linear ablation using PFA provides a reproducible electrophysiological pattern of conduction block and was associated with lower short‐term atrial arrhythmia recurrence than PVI alone in patients with paroxysmal atrial fibrillation. These findings warrant confirmation in randomized trials.
No takes yet. Share an insight, caveat, or question.
Liu et al. (2026) conducted a cohort in Paroxysmal atrial fibrillation (n=306). Pulmonary vein isolation plus posterior inter-antral linear ablation using pulsed field energy vs. Pulmonary vein isolation alone was evaluated on Atrial arrhythmia recurrence beyond a 90-day blanking period (HR 0.23, 95% CI 0.07-0.78). Posterior inter-antral linear ablation with PVI was associated with lower atrial arrhythmia recurrence than PVI alone (6.2% vs 15.8%; HR 0.23; 95% CI 0.07-0.78).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: