In this episode, Dr. Valentin Fuster summarizes the March 25, 2025, issue of the JACC, which focuses on advancements in electrophysiology. Highlights include groundbreaking studies on leadless pacemakers, atrial fibrillation treatments, and appropriate use criteria for cardiac devices, with key papers exploring the safety of pacemaker retrieval, the role of electrograms in ablation procedures, and long-term outcomes for left atrial appendage occlusion devices.