Ventricular arrhythmias are an important cause of morbidity and mortality and come in a
variety of forms, from single premature ventricular complexes to sustained ventricular …

Highlights•Postinfarction ventricular tachycardia (VT) caused by a reentrant circuit is an
important clinical problem.•Catheter ablation may not prevent VT because of difficulty in …

Aims Mapping data of human ventricular fibrillation (VF) are limited. We performed detailed
mapping of the activities underlying the onset of VF and targeted ablation in patients with …

BACKGROUND: The circuit boundaries for reentrant ventricular tachycardia (VT) have been
historically conceptualized within a 2-dimensional (2D) construct, with their fixed or …

Background The Brugada pattern manifests as a spontaneous variability of the
electrocardiographic marker, suggesting a variability of the underlying electrical substrate …

Objectives The goal of this study was to evaluate the role of dynamic substrate changes in
facilitating conduction delay and re-entry in ventricular tachycardia (VT) circuits. Background …

Objectives: This study sought to evaluate the value of combined electrogram (EGM)
information provided by simultaneous mapping using micro-and conventional electrodes in …

Accurate substrate characterisation may improve the evolving understanding and treatment
of cardiac arrhythmias. During substrate-based ablation techniques, wide practice variations …

The fundamental hypothesis of substrate mapping for scar-mediated ventricular tachycardia
is that surrogates of the isthmus can be identified and targeted with ablation during sinus …

Background A new functional mapping strategy based on targeting deceleration zones
(DZs) has become one of the most commonly used strategies within the armamentarium of …