A nurse is assessing a client who has severe preeclampsia and is receiving magnesium sulfate via continuous IV infusion.
Which of the following findings should alert the nurse to suspect magnesium toxicity?
Respiratory rate 10/min
Urine output 40 mL/hr
Patellar reflex 2+
Serum magnesium level 4.5 mEq/L
The Correct Answer is A
Respiratory rate 10/min. This indicates muscle weakness and difficulty breathing, which are symptoms of magnesium 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 reflects muscle weakness and nerve 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.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Level of consciousness.
This is because magnesium sulfate, which is given to prevent seizures in severe preeclampsia, can cause respiratory depression and coma if the dose is too high.Therefore, the nurse should monitor the client’s level of consciousness and respiratory rate closely and report any signs of toxicity to the provider.
Choice A is wrong because hourly intake and output is not the most important assessment for this client.However, the nurse should monitor the urinary output as a sign of renal function and fluid balance and report any output less than 30 ml per hour.
Choice B is wrong because deep tendon reflexes are not the most important assessment for this client.However, the nurse should check the reflexes as a sign of neuromuscular irritability and report any hyperreflexia or clonus.
Choice C is wrong because lung sounds are not the most important assessment for this client.However, the nurse should auscultate the lungs as a sign of pulmonary edema and report any crackles or wheezes.
Correct Answer is D
Explanation
“I will resume my normal activities as soon as possible.” This statement indicates a need for further teaching because a woman who had severe pre-eclampsia should rest more often and avoid strenuous activities until her blood pressure is normal and stable.She should also follow up with her doctor regularly and monitor her blood pressure at home.
Choice A is wrong because it is important to monitor blood pressure at home for a few weeks after having pre-eclampsia.
This can help detect any signs of worsening hypertension or organ damage.
Choice B is wrong because it is advisable to call the doctor if there are any headaches or vision changes, as these could be signs of brain injury or eclampsia.
Eclampsia is a serious complication of pre-eclampsia that causes seizures.
Choice C is wrong because some over-the-counter pain medications, such as ibuprofen, can increase blood pressure and should be avoided by women with pre-eclampsia.However, acetaminophen (Tylenol) is usually safe to take for mild pain relief.
Normal ranges for blood pressure during pregnancy are less than 140/90 mmHg.Normal ranges for protein in urine during pregnancy are less than 300 mg in 24 hours.
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