A patient has a serum potassium of 6.8 mEq/L and peaked T waves on ECG. The immediate priority intervention is:

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Multiple choice — select the best answer

AAdminister sodium polystyrene sulfonate (Kayexalate) orally
BRestrict dietary potassium immediately
CIncrease IV fluid rate
DAdminister calcium gluconate IV to stabilize the cardiac membrane

✓ Correct answer: D. Administer calcium gluconate IV to stabilize the cardiac membrane Severe hyperkalemia with ECG changes (peaked T waves, widened QRS) is cardiac emergency. Calcium gluconate IV stabilizes the cardiac membrane immediately while other treatments (insulin+glucose, Kayexalate) lower K+ levels.

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A patient has a serum potassium of 6.8 mEq/L and peaked T waves on ECG. The immediate priority intervention is:

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