Which medication would have the greatest risk to a fetus if given to a pregnant client? 1. ...

Correct Answer: 3

Rationale 1: Warfarin (Coumadin) is incorrect because it is a category D drug.
Rationale 2: Ranitidine (Zantac) is incorrect because it is a category B drug.
Rationale 3: Estrogen with progesterone (Ortho Novum) is a category X drug, and carries the highest risk; studies have shown a significant risk to women and fetuses.
Rationale 4: Potassium chloride (K-Lor) is incorrect because it is a category A drug.

Global Rationale: Estrogen with progesterone (Ortho Novum) is a category X drug, and carries the highest risk; studies have shown a significant risk to women and fetuses. Warfarin (Coumadin) is incorrect because it is a category D drug. Ranitidine (Zantac) is incorrect because it is a category B drug. Potassium chloride (K-Lor) is incorrect because it is a category A drug.