[Answer] A 4yo boy is in pulseless arrest in the PICU. High-quality CPR is in progress. You quickly review his chart and find that his baseline-corrected QT interval on a 12-lead ECG is prolonged. The monitor shows recurrent episodes of the rhythm shown here. The patient has received 1 dose of epinephrine 0.01 mg/kg but the rhythm shown here continues. If this rhythm persists at the next rhythm check which medication would be most appropriate to administer at that time?

Answer: Magnesium sulfate 25-50 mg/kg IV
A 4yo boy is in pulseless arrest in the PICU. High-quality CPR is in progress. You quickly review his chart and find that his baseline-corrected QT interval on a 12-lead ECG is prolonged. The monitor shows recurrent episodes of the rhyt…

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