A nurse is caring for a client who has severe pre-eclampsia and is receiving hydralazine IV.

Which of the following adverse effects should the nurse monitor for?

Respiratory rate 10/min.This indicatesmuscle weaknessanddifficulty breathing, which are symptoms ofmagnesium toxicity.Magnesium sulfate is a medication that can cause magnesium overdose if given in excess or if the patient has impaired kidney function.

Choice B.Urine output 40 mL/hr is wrong because this is within the normal range for urine output, which is 30 to 50 mL/hr.Urine output may decrease in severe cases of magnesium toxicity due to urine retention.

Choice C. Patellar reflex 2+ is wrong because this is a normal finding for the knee-jerk reflex.A low or absent patellar reflex may indicate magnesium toxicity, as it reflectsmuscle weaknessandnerve dysfunction.

Choice D.Serum magnesium level 4.5 mEq/L is wrong because this is within the normal range for serum magnesium, which is 1.7 to 2.3 mEq/L.Serum magnesium levels above 2.6 mEq/L can indicate hypermagnesemia or magnesium overdose.

The correct answer is choice A and E. The nurse should check the client’s blood pressure and magnesium level before giving hydralazine to a client with severe pre-eclampsia who is receiving magnesium sulfate intravenously.

• Choice A is correct because hydralazine is an antihypertensive drug that lowers blood pressure by relaxing blood vessels.The nurse should monitor the client’s blood pressure before and after giving hydralazine to ensure that it is within the target range and to avoid hypotension or rebound hypertension.

• Choice B is wrong because pulse oximetry is not directly related to hydralazine administration or pre-eclampsia.Pulse oximetry measures the oxygen saturation of hemoglobin in the blood and can be affected by factors such as anemia, hypothermia, nail polish, or movement.

The nurse should monitor the client’s pulse oximetry as part of routine care, but it is not a priority before giving hydralazine.

• Choice C is wrong because checking the client’s reflexes is not directly related to hydralazine administration or pre-eclampsia.Reflexes are assessed to monitor for signs of magnesium toxicity, which can cause muscle weakness, respiratory depression, and cardiac arrest.

The nurse should check the client’s reflexes as part of routine care, but it is not a priority before giving hydralazine.

• Choice D is wrong because checking the client’s urine specific gravity is not directly related to hydralazine administration or pre-eclampsia.Urine specific gravity measures the concentration of solutes in the urine and can be affected by factors such as hydration status, renal function, or diuretic use.

The nurse should monitor the client’s urine specific gravity as part of routine care, but it is not a priority before giving hydralazine.

• Choice E is correct because magnesium sulfate is a drug that prevents and treats seizures in women with severe pre-eclampsia or eclampsia.The nurse should monitor the client’s magnesium level before and after giving magnesium sulfate to ensure that it is within the therapeutic range and to avoid magnesium toxicity.