Kaplan Maternity Integrated Practice Exam 2026 – The All-in-One Guide to Master Your Exam Success!

Hydralazine is a vasodilator specifically used to manage hypertension by relaxing the smooth muscle within blood vessels. This relaxation leads to the dilation of the arteries and veins, which reduces systemic vascular resistance and decreases blood pressure. Hydralazine is particularly effective for treating acute hypertension and is often used in settings such as pregnancy-related hypertension, including preeclampsia and eclampsia.

The other options listed serve different purposes. For instance, magnesium sulfate is primarily used for seizure prevention in conditions like preeclampsia and has some vasodilatory effects but is not primarily a hypertension medication. Propranolol, a beta-blocker, is used to manage cardiac conditions and anxiety, and while it can lower heart rate and blood pressure, it does not function as a vasodilator. Diazepam is a benzodiazepine used for its sedative properties and does not have a role in managing hypertension.