A first-time father is changing the diaper of his 1-day-old daughter. He asks the nurse, "What is this black, sticky stuff in her diaper?" The nurse's best response is:

Choice A) Antihypertensive: This is not the correct classification of magnesium sulfate. Antihypertensives are drugs that lower blood pressure, such as beta blockers, calcium channel blockers, or angiotensin-converting enzyme inhibitors. Magnesium sulfate does not have a significant effect on blood pressure, and it is not used as a primary treatment for hypertension in preeclampsia.

Choice B) Anticonvulsant: This is the correct classification of magnesium sulfate. Anticonvulsants are drugs that prevent or reduce the frequency and severity of seizures, such as phenytoin, valproic acid, or carbamazepine.

Magnesium sulfate is used as a prophylactic and therapeutic agent for eclampsia, which is a life-threatening complication of preeclampsia characterized by seizures. Magnesium sulfate acts by blocking the neuromuscular transmission and reducing the cerebral edema and vasospasm.

Choice C) Tocolytic: This is not the correct classification of magnesium sulfate. Tocolytics are drugs that inhibit uterine contractions and delay preterm labor, such as terbutaline, nifedipine, or indomethacin. Magnesium sulfate is not effective as a tocolytic agent, and it is not recommended for this purpose by the American College of Obstetricians and Gynecologists.

Choice D) Diuretic: This is not the correct classification of magnesium sulfate. Diuretics are drugs that increase urine output and reduce fluid retention, such as furosemide, hydrochlorothiazide, or spironolactone. Magnesium sulfate does not have a diuretic effect, and it can cause fluid overload and pulmonary edema if administered in excess.

Choice a) I will be certain to empty the litter boxes regularly is incorrect because this is a risky behavior for a pregnant woman who wants to prevent toxoplasmosis. Toxoplasmosis is an infection caused by a parasite called Toxoplasma gondii, which can be found in the feces of cats and other animals. If a pregnant woman gets infected with toxoplasmosis, she can pass it to her unborn baby, which can cause serious problems such as miscarriage, stillbirth, or birth defects. Therefore, a pregnant woman should avoid contact with cat litter and let someone else handle the litter boxes, or wear gloves and wash her hands thoroughly if she has to do it herself.

Choice b) I have to wash all of my fruits and vegetables is correct because this is a good practice for a pregnant woman who wants to prevent toxoplasmosis. Toxoplasmosis can also be transmitted through contaminated soil or water, which can adhere to fruits and vegetables. Therefore, a pregnant woman should wash all of her fruits and vegetables before eating them, and peel or cook them if possible, to remove any traces of the parasite.

Choice c) I won't eat raw eggs is correct because this is another good practice for a pregnant woman who wants to prevent toxoplasmosis. Toxoplasmosis can also be acquired through eating undercooked or raw meat or eggs that contain the parasite. Therefore, a pregnant woman should avoid eating raw eggs or any foods that contain them, such as mayonnaise, mousse, or homemade ice cream, and cook all of her meat and eggs thoroughly until they are no longer pink or runny.

Choice d) I need to be cautious when cooking meat is correct because this is also an important practice for a pregnant woman who wants to prevent toxoplasmosis. Toxoplasmosis can also be spread through handling raw meat that contains the parasite. Therefore, a pregnant woman should be careful when cooking meat and use separate utensils and cutting boards for raw and cooked meat, wash her hands and surfaces after touching raw meat, and avoid tasting raw meat while cooking it.