Hyperkalemia is defined as a serum potassium level above which value?
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✓ Correct answer: C. 5.5 mEq/LAnswer: 5.5 mEq/L Hyperkalemia is a condition characterized by an abnormally high level of potassium in the blood. Potassium is a critical electrolyte for the function of nerve and muscle cells, including those in the heart. A serum potassium level above 5.5 mEq/L is generally used as the threshold for diagnosing hyperkalemia. In pediatric critical care, hyperkalemia can be particularly dangerous and may lead to serious cardiac arrhythmias or cardiac arrest if not promptly recognized and treated. Causes of hyperkalemia in children can include renal insufficiency, certain medications, and conditions such as tissue breakdown (hemolysis, rhabdomyolysis).
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