Exploring Hyperkalemia Risk in Frail Older Patients Using RAAS Inhibitors.

Purpose: Renin-angiotensin-aldosterone system inhibitors (RAASi) are widely used in treatment of cardiovascular and renal disease. While effective, they pose a risk of hyperkalemia. In the general population, risk factors for hyperkalemia include chronic kidney disease, congestive heart failure, and use of medication affecting potassium balance.