RT Book, Section A1 Arora, Nayan A1 Jefferson, J. Ashley A2 Papadakis, Maxine A. A2 McPhee, Stephen J. A2 Rabow, Michael W. A2 McQuaid, Kenneth R. SR Print(0) ID 1184182588 T1 Hyperkalemia T2 Current Medical Diagnosis & Treatment 2022 YR 2022 FD 2022 PB McGraw-Hill Education PP New York, NY SN 9781264269389 LK accessmedicine.mhmedical.com/content.aspx?aid=1184182588 RD 2024/04/19 AB ESSENTIALS OF DIAGNOSISSerum potassium > 5.2 mEq/L (5.2 mmol/L).Check medications carefully. Hyperkalemia may develop from angiotensin-converting enzyme (ACE) inhibitors, angiotensin receptor blockers, and potassium-sparing diuretics, most commonly in patients with kidney dysfunction.The ECG may be normal despite life-threatening hyperkalemia.Rule out pseudohyperkalemia and extracellular potassium shift from cells.