ASSOCIATION BETWEEN SERUM POTASSIUM LEVEL AND OUTCOMES IN HEART FAILURE WITH REDUCED EJECTION FRACTION: A COHORT STUDY FROM THE SWEDISH HEART FAILURE REGISTRY

Background: Hyper- and hypokalemia are common in heart failure (HF) and associated with worse outcomes. Normal values are established in the general population (3.5-5.0mmol/L), but the optimal potassium (K+) range in patients with HF is unknown. Methods: Using the Swedish HF Registry, we studied HF