A 2-year-old has a continuous machine-like murmur. Which drug closes the lesion?

Answer and explanation

Correct answer: D. Indomethacin

  1. Step 1: A patent ductus arteriosus closes with prostaglandin inhibition. Answer: Indomethacin. Why not the others: Prostaglandin E1 keeps the ductus open.

Practise more Anatomy, Embryology and Behavioral Science.

Free questions with an explanation for every one, and full timed USMLE Step 1 mock tests.