Contact force and catheter stability are predictive metrics of successful pulmonary vein isolation with high‐power short duration ablation in atrial fibrillation

摘要

Abstract Introduction Preliminary data suggest that high power short duration (HPSD) ablation for pulmonary vein isolation (PVI) are safe. Limited data are available on its effectiveness. Aim was to evaluate HPSD ablation in atrial fibrillation?ablation using a novel Qdot Micro catheter. Methods and Results Prospective multicenter study evaluating safety and efficacy of PVI with HPSD ablation. First pass isolation (FPI) and sustained PVI was assessed. If FPI was not achieved additional ablation index (AI)‐guided ablation with 45?W was performed and metrics predictive of this were determined. Sixty‐five patients and 260 veins were treated. Procedural and LA dwell time was 93.9?±?30.4 and 60.5?±?23.1?min, respectively. FPI was achieved in 47 (72.3) patients and 231 veins (88.8) with an ablation duration of 4.6?±?1.0?min. Twenty‐nine veins required additional AI‐guided ablation to achieve initial PVI with 24 anatomical sites ablated with the right posterior carina being the most common site (37.5). A contact force of ≥8?g (area under the curve?AUC: 0.81; p?