Key result
Cryoballoon ablation is noted as a potential approach for ventricular arrhythmias arising from endocavitary structures in the right ventricle, with two prior reports currently available.
Why the study?
RF ablation of ventricular arrhythmias is limited by lesion depth, catheter contact, and stability, especially on mobile endocavitary structures, and cryoballoon ablation data remain limited.
Ventricular arrhythmias (VAs) may arise from the endocardium, including mobile endocavitary structures (papillary muscles and the right ventricular moderator band), midmyocardium, or epicardium. Radiofrequency (RF) ablation of VAs is limited by lesion depth, catheter contact, and stability, particularly with mobile endocavitary structures. Focal cryoablation of VAs has been performed via an endocardial approach1 or used intraoperatively at the time of cardiac surgery.2 There are currently 2 reports of cryoballoon ablation of VA arising from endocavitary structures in the right ventricle (RV).
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Cook et al. (2022) studied Refractory ventricular tachycardia. Cryoballoon ablation was evaluated. Cryoballoon ablation is noted as a potential approach for ventricular arrhythmias arising from endocavitary structures in the right ventricle, with two prior reports currently available.
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