USMLE-Rx Step 1 Qmax Challenge #1681

Check out today’s Step 1 Qmax Question Challenge.

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A woman presents to the hospital in labor. She states that she has not had any prenatal care. She delivers an infant of normal weight, but he has a smooth philtrum and his head is small. A photo of a similarly affected infant is shown.

Which of the following exposures would most likely produce this clinical picture?

A. Drinking alcohol
B. Rubella infection
C. Smoking cigarettes
D. Strenuous exercise
E. Using cocaine

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