Why the study?
Does radiofrequency catheter ablation at the pulmonary artery improve termination of idiopathic RVOT ventricular arrhythmias in patients where usual site ablation fails?
Does radiofrequency catheter ablation at the pulmonary artery improve termination of idiopathic RVOT ventricular arrhythmias in patients where usual site ablation fails?
The pulmonary artery serves as a pivotal alternative site for catheter ablation of idiopathic RVOT ventricular arrhythmias when standard approaches fail.
May warrant pulmonary artery mapping in refractory RVOT VA ablation; leaves open need for prospective validation.
In patients without associated myocardial diseases, characterized by left bundle branch block and inferior axis morphologies, repetitive idiopathic right ventricular tachycardias and ventricular premature contractions typically arise from right ventricular outflow tract (RVOT). Accumulated evidences have shown that radiofrequency catheter ablation is a useful treatment for patients with RVOT ventricular arrhythmias (VAs). Interestingly, several medical centers have shown that pulmonary artery (PA) is a potential novel site for catheter ablation in RVOT-like VAs, particularly in patients where termination of RVOT VAs at the usual site fails. In this review, we comprehensively demonstrated that RVOT VAs were successfully terminated at the site of PA, analyzed the characteristics of surface electrocardiogram and endocardial potentials, and explored the underlying mechanisms for these cases.
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Wang et al. (2017) studied this question.
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