The body needs the mineral potassium to regulate muscle contraction. The heart, being a muscle, may respond to changes in potassium levels by developing an irregular heartbeat, or arrhythmia. Atrial ...

Madrid, Spain – 29 August 2025: Targeting high-normal potassium levels reduced the risk of arrhythmias, hospitalisation for heart failure or arrhythmia and death compared with no intervention, ...

MADRID, Spain—Increasing low potassium levels improves clinical outcomes among patients with cardiovascular disease and a high risk for ventricular arrhythmias, the randomized POTCAST trial shows.