Feasibility of circumferential pulmonary vein isolation using a novel endoscopic ablation system.

Feasibility of Circumferential Pulmonary Vein Isolation Using a Novel Endoscopic Ablation System Schmidt et al.; Circumferential Pulmonary Vein Isolation with Endoscopic Balloon

Visual balloon-guided point-by-point ablation: reliable, reproducible, and persistent pulmonary vein isolation.

BACKGROUND While conceptually straightforward, placing point-to-point contiguous radiofrequency lesions to achieve pulmonary vein isolation (PVI) is technically challenging in patients with paroxysmal atrial fibrillation. Furthermore, chronic efficacy is limited by late PV reconnections. A novel compliant balloon ablation catheter able to deliver visually guided short arcs/spots of laser energy...

Efficacy and safety of circumferential pulmonary vein isolation using a novel cryothermal balloon ablation system.

OBJECTIVES We sought to evaluate the efficacy and safety of a novel cryothermal balloon ablation system in creating pulmonary vein (PV) isolation. BACKGROUND Pulmonary vein isolation using standard radiofrequency ablation techniques is limited by procedure-related complications, such as thrombus formation and PV stenosis. Cryothermal ablation may reduce the risk of such complications. METHO...

Cryoballoon ablation for atrial fibrillation

2014 Pulmonary vein (PV) isolation is the cornerstone of ablation therapy for atrial fibrillation. The majority of procedures are still performed using radiofrequency (RF) energy and a point-by-point ablation approach. Novel ‘single shot’ ablation tools with the aim of creating a circumferential lesion around the PVs with a single or a limited number of energy applications emerge. The currently...

Catheter Ablation of Nonparoxysmal Atrial Fibrillation Using Electrophysiologically Guided Substrate Modification During Sinus Rhythm After Pulmonary Vein Isolation.

BACKGROUND The high incidence of postprocedural atrial tachycardia reduces the absolute arrhythmia-free success rate of extensive ablation strategies to treat nonparoxysmal atrial fibrillation (NPAF). We hypothesized that a strategy of targeting low-voltage zones and sites with abnormal electrograms during sinus rhythm (SR-AEs) in the left atrium after circumferential pulmonary vein isolation a...