Which medication is commonly used to treat pregnancy-induced hypertension (PIH)?

Hydralazine is a direct vasodilator that is frequently utilized in the management of pregnancy-induced hypertension (PIH) due to its ability to quickly lower blood pressure by relaxing vascular smooth muscle. This effect improves blood flow and reduces the risk of complications associated with high blood pressure during pregnancy. The rapid onset of action and the option for intravenous administration make it particularly advantageous in an acute setting, providing immediate relief for maternal hypertension.

While other medications such as magnesium sulfate are primarily used for seizure prophylaxis in conditions like eclampsia, and labetalol is an effective alternative as a beta-blocker, hydralazine remains a commonly used first-line agent due to its unique properties tailored for addressing the acute blood pressure changes associated with PIH. Nifedipine, a calcium channel blocker, can also be used but is generally not the first choice in emergency scenarios. Each of these agents plays a role in managing hypertension, but hydralazine is notable for its specific application in this particular condition during pregnancy.