us-abem MCQ (SBA): Atrial Fibrillation with Pre-excitation

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HardCardiologyAtrial Fibrillation with Pre-excitationus-abemus-usmle-step-2us-usmle-step-3

A 76-year-old with atrial fibrillation and rapid ventricular response has an irregular wide-complex tachycardia; delta waves are seen when sinus. He is stable and alert. Which acute therapy is appropriate?

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us-abem MCQ: Atrial Fibrillation with Pre-excitation — Answer & Explan