## **Core Concept**
Eclampsia is a severe complication of preeclampsia characterized by new-onset seizures during pregnancy. Management of hypertension in eclampsia is critical to prevent further complications. The goal is to control blood pressure while ensuring the safety of both the mother and the fetus.

## **Why the Correct Answer is Right**
The correct answer, **Magnesium sulfate**, is the drug of choice for eclampsia and also effectively manages hypertension associated with eclampsia. Magnesium sulfate acts as a vasodilator and has a role in neuroprotection. It is used for seizure prophylaxis in preeclampsia and for seizure management in eclampsia. Additionally, it helps in lowering blood pressure to some extent.

## **Why Each Wrong Option is Incorrect**
* **Option A:** Labetalol is used to manage hypertension in pregnancy but is not the first choice for eclampsia specifically.
* **Option B:** Nifedipine can be used for chronic hypertension in pregnancy but is not the preferred agent for acute management of hypertension in eclampsia.
* **Option D:** Diazepam can be used for seizure control but is not the first-line treatment for eclampsia or hypertension associated with eclampsia.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that magnesium sulfate is not only used for seizure prophylaxis and treatment in eclampsia but also has a beneficial effect on blood pressure control. It is essential to monitor magnesium levels and reflexes to prevent toxicity.

## **Correct Answer:** . Magnesium sulfate