Key result
Bailout cryoballoon ablation was successful in 71.4% (5 of 7) of patients with ventricular arrhythmias refractory to conventional endocardial radiofrequency ablation.
Why the study?
Does endocardial cryoballoon ablation improve procedural success in patients with ventricular arrhythmias refractory to conventional radiofrequency ablation?
Case Report (n=7)
Does endocardial cryoballoon ablation improve procedural success in patients with ventricular arrhythmias refractory to conventional radiofrequency ablation?
Cryoballoon ablation may serve as an effective bailout strategy for ventricular arrhythmias refractory to conventional radiofrequency ablation due to its adhesive stability and ability to create deep homogeneous lesions.
Feasibility of cryoballoon ablation for select refractory ventricular arrhythmias is suggested; hypothesis-generating and requires prospective validation.
We report seven patients who underwent bail out cryoballoon ablation of ventricular arrhythmias refractory to conventional endocardial radiofrequency ablation. Ablated arrhythmia substrates included right ventricular moderator band (n=2), left ventricular (LV) papillary muscle (n=2), left fascicular (n=1) and deep LV myocardial (n=2). Cryoballoon ablation was successful in 5/7 patients. Advantages of cryoballon ablation include adhesive stability on endocavitary structures and creation deep homogeneous myocardial lesionds. Newer balloon technologies designed to improve myocardial contact that incorporate high density mapping on the balloon surface may expand utility of this technology for ablation of ventricular arrhythmias.
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Cook et al. (2022) conducted a case report in Ventricular arrhythmias refractory to conventional endocardial radiofrequency ablation (n=7). Bailout cryoballoon ablation was evaluated on Successful ablation. Bailout cryoballoon ablation was successful in 71.4% (5 of 7) of patients with ventricular arrhythmias refractory to conventional endocardial radiofrequency ablation.
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