题目：
Susan is an adolescent client with pregnancy-induced hypertension (PIH). The physician orders 5% dextrose in Ringer’s solution and magnesium sulfate intravenously for her. Before the magnesium sulfate is administered, which of the following assessments would be the priority()
A. Maternal urinary output.
B. Fetal position.
C. Fetal heart rate variability.
D. Maternal respiratory rate.
答案：
参考答案：D
解析：
Magnesium sulfate is a central nervous system depressant used as an anticonvulsant for severe PIH. It may depress respirations to a dangerously low and even life-threatening level. Therefore, the nurse must assess the client’s respiratory rate before administering the drug. If the client’s respiratory rate is below 12 to 14 breaths/ minute, the physician should be notified and the drug should be withheld.
