JAMA Editor in Chief Kirsten Bibbins-Domingo reviews 4 JAMA trials presented at this year’s European Society of Cardiology (ESC) Congress on antihypertensive continuation before elective surgery, potassium supplementation after cardiac surgery, pulmonary vein isolation for symptomatic atrial fibrillation, and a triple-drug combination pill for resistant hypertension in Africa. Correction: an earlier version of this podcast contained an error in the conclusion of the TIGHT K trial summary, which has been updated. Related Content: Continuation vs Discontinuation of Renin-Angiotensin System Inhibitors Before Major Noncardiac Surgery Low-Dose Triple-Pill vs Standard-Care Protocols for Hypertension Treatment in Nigeria Is a Low-Dose Triple-Drug Combination Pill Protocol the Answer for Hypertension Control in Sub-Saharan Africa? Potassium Supplementation and Prevention of Atrial Fibrillation After Cardiac Surgery Pulmonary Vein Isolation vs Sham Intervention in Symptomatic Atrial Fibrillation