Heart Failure and Cardiomyopathies

2026 AHA/ACC Clinical Performance and Quality Measures for Patients With Atrial Fibrillation HeartBEATS from Lifelong Learning™, Science Series: Opioid-Associated Out-of-Hospital Cardiac Arrest Methodologic Standards for Follow-Up Extension in Cardiovascular Trials Exercise Training in High-Risk Populations Variant Site-Specific Natural History of Titin-Induced Cardiomyopathy: An International Multicenter Registry Deprescribing in Patients With Cardiovascular Disease Experiencing Polypharmacy Graded Associations Between Left Ventricular Ejection Fraction Improvement and Cardiorenal Outcomes in Heart Failure With Improved Ejection Fraction Clinical Course and Predictors of Heart Failure in Asymptomatic Obstructive Hypertrophic Cardiomyopathy Stanniocalcin‐1 Attenuates Cardiac Fibrosis Post Ischemia–Reperfusion Injury by Targeting the DOCKER Domain of Dedicator of Cytokinesis 1 Prognostic Value of the Meta‐Analysis Global Group in Chronic Heart Failure Risk Score in Patients Undergoing Mitral Valve Transcatheter Edge‐to‐Edge Repair