Functional Conduction Block During Extra-Stimulus Mapping Masks Deceleration Zones and Reveals Additional VT Substrate | JACC: Clinical Electrophysiology

Deputy Editor Francis Marchlinski hosts a deep‑dive discussion on the study "Functional Conduction Block During Extra‑Stimulus Mapping Masks Deceleration Zones and Reveals Additional VT Substrate." In this episode, Dr. Marchlinski explores how extra‑stimulus pacing can alter the visualization of critical conduction deceleration zones and uncover previously hidden components of the ventricular tachycardia substrate. He breaks down the clinical implications of these dynamic changes and what they mean for improving VT mapping and ablation strategies.