USMLE Step 3 - Question 10

A 21 year old college student without any prior past medical history comes to the emergency room with complaints of palpitations and dizziness. She states he was at a party recently and had been drinking alcohol heavily when she noted the symptoms. No chest pains or shortness of breath. Her blood pressure is 110/70, heart rate 160, respirations 20, and oxygen saturation 95% on room air. A portion of his ECG is below. An echocardiogram is normal. Which of the following is the most appropriate management at this time?

USMLE-Step2-Q5-PIC1

A. Emergent direct current cardioversion

B. Intravenous amiodarone

C. Intravenous diltiazem

D. Observation

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