Deputy Editor Kenneth Ellenbogen presents an in‑depth discussion of the study "Long PR Interval Leads to Atrial Remodeling, Fibrosis and Inducible Atrial Fibrillation in a Swine Model." In this episode, Dr. Ellenbogen walks listeners through how prolonged atrioventricular conduction can drive structural and electrical remodeling in the atria, leading to fibrosis and increased susceptibility to atrial fibrillation. He highlights the significance of these findings for understanding AF pathophysiology and considers how this preclinical model may inform future prevention and treatment strategies.

In this podcast, Francis Marchlinski, MD, Deputy Editor of JACC: Clinical Electrophysiology, discusses a novel pulsed field ablation–based endocardial strategy for ventricular tachycardia in patients with arrhythmogenic right ventricular cardiomyopathy. The paper presents an early consecutive experience demonstrating the feasibility, acute effectiveness, and safety of PFA for VT without the need for epicardial access. Dr. Marchlinski highlights the clinical implications of this approach and how tissue-selective, nonthermal energy may expand treatment options for this challenging patient population.

In this podcast, Francis Marchlinski, MD, Deputy Editor of JACC: Clinical Electrophysiology, discusses a large multicenter study evaluating the incidence and clinical significance of aortic regurgitation following mapping and ablation of ventricular arrhythmias in the aortic cusps and commissures. Drawing on contemporary data from four high‑volume centers, the paper provides important reassurance regarding the safety of aortic cusp ablation, demonstrating that clinically significant aortic regurgitation is rare and infrequently progressive. Dr. Marchlinski highlights the key findings, procedural considerations, and implications for everyday practice in ventricular arrhythmia ablation.