Key result
Accurate localization of premature ventricular contractions from complex anatomic sites like the aortomitral continuity remains challenging using standard 12-lead ECG.
A novel noninvasive electrophysiology system may aid in the difficult localization of premature ventricular contractions from the aortomitral continuity prior to ablation.
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May limit reliance on 12-lead ECG for aortomitral PVCs; leaves open validation of novel mapping systems in larger cohorts.
Accurate localization of the origin of focal ventricular arrhythmias is a prerequisite to successful catheter ablation. However, ventricular arrhythmias arising from complex anatomic sites render mapping and ablation difficult. On the 12-lead surface electrocardiography (ECG), the QRS morphology of ventricular arrhythmias may be difficult to discern because of their anatomic vicinity, in particular if arising from the right ventricular outflow tract, aortic sinus cusps, and aortomitral continuity (AMC).
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Wißner et al. (2016) studied Premature ventricular contractions. Radiofrequency ablation using a novel noninvasive epicardial and endocardial electrophysiology system was evaluated. Accurate localization of premature ventricular contractions from complex anatomic sites like the aortomitral continuity remains challenging using standard 12-lead ECG.
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