• Alternative Names

    High potassium; Potassium - high


    Hyperkalemia often has no symptoms. Occasionally, people may have the following symptoms:

    • Irregular heartbeat
    • Nausea
    • Slow, weak, or absent pulse

    Signs and tests
    • ECG may show changes related to hyperkalemia
    • ECG may show potentially dangerous arrhythmias:
      • Heart block that may become a complete heart block
      • Slower than normal heartbeat (bradycardia) that progressively slows
      • Ventricular fibrillation
    • Pulse may be slow or irregular
    • Serum potassium is high