Final answer:
The nurse should anticipate administering Calcium gluconate if a client develops magnesium toxicity from IV magnesium sulfate treatment for preeclampsia. Calcium gluconate is an antagonist to magnesium and is the appropriate emergency treatment for magnesium overdose.
Step-by-step explanation:
If a client develops magnesium toxicity while being treated for preeclampsia with IV magnesium sulfate, the nurse should anticipate administering Calcium gluconate. Calcium gluconate acts as an antagonist to magnesium and is used in emergencies to counteract the effects of magnesium overdose. This treatment helps to prevent the potentially serious side effects associated with magnesium toxicity, such as cardiac or respiratory arrest.
Other options like Furosemide, Oxytocin, and Nitroglycerin have different indications. Furosemide is a diuretic that acts on the loop of Henle, inhibiting the reabsorption of Na+ and Cl-, primarily used to treat conditions such as edema and hypertension. Oxytocin is a hormone used to induce labor, and Nitroglycerin is a vasodilator used for angina pectoris. These medications are not appropriate for reversing magnesium toxicity.