Key result
12-lead ECG algorithms help localize outflow tract VAs to predict catheter ablation safety and efficacy.
Why the study?
The intimate and complex anatomy of the outflow tracts limits the predictive value of ECG criteria alone for localizing ventricular arrhythmias before catheter ablation.
This review summarizes published 12-lead ECG algorithms used to guide the preprocedural localization of outflow tract ventricular arrhythmias for catheter ablation.
May aid preprocedural planning for outflow tract ablation; leaves open prospective validation of accuracy and outcomes.
Idiopathic ventricular arrhythmias commonly originate from the right ventricular and left ventricular outflow tracts (OTs). Advances in real-time imaging have refined our understanding of the intimate anatomic structures implicated in the genesis of OT arrhythmias, making catheter ablation for arrhythmias beyond the right ventricular OT a feasible option for cure-indeed ablation is now a class I indication in recent guidelines. The surface 12-lead ECG is routinely used to localize the anatomic site of origin before catheter ablation. However, the intimate and complex anatomy of the OT limits predictive value ECG criteria alone for localization for these arrhythmias. Multiple ECG algorithms have been developed to assist preprocedural localization, and hence predict safety and efficacy for catheter ablation of OT ventricular arrhythmias. This review will summarize all of the published 12-lead ECG algorithms used to guide localization of OT ventricular arrhythmias.
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Anderson et al. (2019) conducted a review in Outflow tract ventricular arrhythmias. 12-lead ECG algorithms was evaluated. Published 12-lead ECG algorithms assist in the preprocedural localization of right- and left-sided outflow tract ventricular arrhythmias to predict safety and efficacy for catheter ablation.
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