Arrhythmias and Electrophysiology

Key Patient Messages: 2025 Acute Coronary Syndromes Guideline Bradycardia in Athletes: Prevalence, Mechanisms, and Risks Time Course of Cardiac Arrhythmia Following High‐Volume Exercise in Recreational Cyclists Large Language Modeling–Enabled Analysis of Atrial Fibrillation on Social Media A Storm of Tachycardia Following Stroke: What Is the Mechanism? Baseline ECG and Cardiovascular Outcomes in People With HIV: Insights From REPRIEVE What Should a Clinical Cardiologist Know About Cardiogenetics? Modeling Long-QT Syndrome Using Gene-Edited Miniature Pigs Ca²⁺ in the Mitochondrial Intermembrane Space: A New Compartment Fueling Arrhythmias Association of Epicardial Adipose Tissue With Bradyarrhythmias: A Matched Case–Control Study