Free USMLE-STEP-3 Web TestEngine Demo

Q40 Single choice

A 24-year-old G1 presents to you for initiation of obstetric care. She informs you that she is on a medication that was prescribed for acne. The drug is listed as category X in your pharmacy book.

The pregnancy risk factor category X for a drug indicates which of the following?

A
Controlled human studies demonstrate no risk to a fetus.
B
This drug should never be used by a pregnant female under any circumstances.
C
Evidence of human teratogenic risk exists but in some cases the known risks may be outweighed in some serious situations, such as life-threatening disease.
D
Animal reproduction studies have not demonstrated fetal risk but there are no controlled human studies to assess the risk.
E
Animal reproduction studies have demonstrated risk to a fetus and no controlled human studies are available.

USMLE-STEP-3 Web TestEngine demo