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Beta-blocker and calcium-channel blocker overdose — ABEM Board MCQ

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HardToxicologyBeta-blocker and calcium-channel blocker overdoseABEM Board

A 58-year-old man arrives as ESI 1 with wheezing, diaphoresis, and altered mental status. He took extra propranolol and verapamil. BP 68/38, HR 36, glucose is 58 mg/dL, ECG shows junctional bradycardia, and calcium has minimal effect. Which of the following is the most important immediate intervention?

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

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Correct answer: EStart high-dose insulin euglycemia therapy with dextrose support

Combined beta-blocker and calcium-channel blocker shock is treated with high-dose insulin euglycemia therapy, vasopressors, and supportive care.

Reference: ACMT guidance; Goldfrank Toxicologic Emergencies