A patient is admitted to labor and delivery for management of severe preeclampsia. An IV infusion of magnesium sulfate is ordered. What is the primary goal for magnesium sulfate therapy?

Choice A rationaleDecrease proteinuria is not the primary goal for magnesium sulfate therapy. It's an indicator of kidney function and hypertension severity. Therapy focuses on neuroprotection and seizure prevention. Proteinuria reflects preeclampsia's renal impact, not neuroprotection.Choice B rationalePrevent maternal seizures is magnesium sulfate's primary goal. It stabilizes neuronal membranes, reducing seizure risk in severe preeclampsia. By inhibiting NMDA receptors and calcium channels, it prevents seizures, critical for maternal-fetal safety.Choice C rationaleReduce deep tendon reflexes is not magnesium sulfate's primary goal, but a side effect. It signifies therapeutic levels, indicating potential toxicity. Reflex reduction helps assess magnesium toxicity risk, ensuring safe neuroprotective dosing.