Usefulness of a multi-spline duodecapolar catheter with smaller electrodes and closer spacings for mapping and ablation of Purkinje-related premature ventricular contraction and triggered ventricular fibrillation
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چکیده
Introduction Purkinje fibers serve as triggers and perpetuators of ventricular fibrillation (VF). Although catheter ablation can be an effective therapy for Purkinje-related premature ventricular contractions (PVCs) and triggered VF, it is essential to detect the exact site of the origin of the PVCs by mapping Purkinje potentials (PPs) precisely. Here, we report a case of Purkinje-related PVCs/VF successfully treated with catheter ablation guided by mapping using a PentaRay catheter.
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Successful catheter ablation of electrical storm after myocardial infarction.
BACKGROUND We report on 4 patients (aged 57 to 77 years; 3 men) who developed drug-refractory, repetitive ventricular tachyarrhythmias after acute myocardial infarction (MI). All episodes of ventricular arrhythmias were triggered by monomorphic ventricular premature beats (VPBs) with a right bundle-branch block morphology (RBBB). METHODS AND RESULTS Left ventricular (LV) mapping was performed...
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Ventricular fibrillation (VF) is a malignant arrhythmia, usually initiated by a ventricular premature contraction (VPC) during the vulnerable period of cardiac repolarization. Ablation therapy for VF has been described and increasingly reported. Targets for VF triggers are VPCs preceded by Purkinje potentials or from the right ventricular outflow tract (RVOT) in structurally normal hearts, and ...
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