## **Core Concept**
The management of hypertension in pregnancy is crucial to prevent complications for both the mother and the fetus. The choice of antihypertensive medication during pregnancy must consider the safety and well-being of both.

## **Why the Correct Answer is Right**
Methyldopa is considered the drug of choice for chronically hypertensive pregnant women requiring long-term antihypertensive therapy. It works centrally by stimulating α2-adrenergic receptors in the brain, which decreases sympathetic tone and lowers blood pressure. Methyldopa has a long history of safe use in pregnancy and is often used as a first-line agent due to its efficacy and safety profile for both mother and fetus.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Atenolol is a beta-blocker that can cause growth restriction in the fetus and is generally avoided in pregnancy, especially in the first and second trimesters.
- **Option B:** Nifedipine, a calcium channel blocker, can be used in pregnancy but is usually reserved for acute blood pressure control or when methyldopa is not tolerated or contraindicated.
- **Option C:** This option is not provided, but typically, other ACE inhibitors and ARBs are contraindicated in pregnancy due to the risk of fetal renal damage and other complications.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that ACE inhibitors and angiotensin receptor blockers (ARBs) are contraindicated in pregnancy due to their association with fetal renal damage and other complications. Methyldopa, labetalol, and nifedipine are commonly used antihypertensives in pregnancy, with methyldopa often preferred for long-term management.

## **Correct Answer:** D. Methyldopa.