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Life-threatening hyperkalemia — ABEM Board MCQ

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EasyRenal/Metabolic emergenciesLife-threatening hyperkalemiaABEM Board

A 66-year-old woman arrives as ESI 2 with weakness after missing dialysis. BP 154/86, HR 42. ECG shows peaked T waves and widening QRS; potassium is 7.2 mEq/L. Which of the following is the most appropriate initial action?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: BGive IV calcium gluconate

Hyperkalemia with ECG changes requires immediate membrane stabilization with IV calcium before shifting and removal therapies.

Reference: AHA ACLS special circumstances; KDIGO hyperkalemia guidance