Hyperkalemia Emergency Management

Serum potassium level above 5.5 mEq/L.

Written by: Saygı Hospital Health Guide Editorial Board

Last updated: June 9, 2026

This content has been compiled by the Saygı Hospital Health Guide Editorial Board and is periodically reviewed by a specialist physician.

References (5)

This content is for informational purposes only and does not constitute medical advice. You can book an appointment at our Dahiliye (İç Hastalıkları) department. Book Appointment →

What is Hyperkalemia Emergency Management?

Hyperkalemia is defined as serum potassium above 5.5 mEq/L. It is graded as mild (5.5-6.0), moderate (6.1-6.9), and severe (≥7.0 mEq/L). Chronic kidney disease, ACE inhibitors/ARBs, potassium-sparing diuretics, and cell breakdown are the most common causes.

The most dangerous effect of hyperkalemia is cardiac conduction disturbance. ECG findings include peaked T waves, PR prolongation, QRS widening, and ultimately a sinusoidal pattern. Hyperkalemia with ECG changes requires emergent treatment.

Treatment proceeds in three steps: (1) myocardial stabilization (IV calcium), (2) shifting potassium intracellularly (insulin+glucose, beta-agonists, bicarbonate), and (3) removing potassium from the body (kayexalate, patiromer, dialysis).

Symptoms

Muscle weakness and paresthesias

Palpitations and chest discomfort

Nausea and abdominal cramps

ECG changes (peaked T waves)

Flaccid paralysis in severe cases

Cardiac arrest (in very severe cases)

Risk Factors

Chronic kidney disease and dialysis patients

ACE inhibitors, ARBs, spironolactone use

Rhabdomyolysis and tumor lysis syndrome

Addison disease

Metabolic acidosis

When to See a Doctor?

If you experience any of the following symptoms, seek medical attention promptly:

Muscle weakness and palpitations together (urgent)
Symptoms in a known kidney patient
Elevated potassium on lab tests
ECG findings of hyperkalemia (urgent)

Treatment Methods

IV calcium gluconate (myocardial stabilization — effect within minutes)

IV insulin + glucose (shifts potassium intracellularly)

Nebulized salbutamol (shifts potassium intracellularly)

Sodium polystyrene sulfonate or patiromer (potassium binders)

Hemodialysis (in severe or refractory cases)

Which Department to Visit?

You can visit our Dahiliye (İç Hastalıkları) department for these complaints. Our specialist physicians will create the most suitable treatment plan for you.

Learn About Dahiliye (İç Hastalıkları) Department

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You can make an appointment with our specialists or contact us for your concerns.

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Health Disclaimer: The information on this page is prepared for general informational purposes only. It does not replace medical diagnosis and treatment. Please consult your physician for your complaints. Saygı Hospital does not accept responsibility for actions taken based on the information on this page.