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 A
Explanation
Urinary output of 100 mL in 4 hr is an indication of magnesium sulfate toxicity.Magnesium sulfate is used to prevent seizures in women with severe preeclampsia or eclampsia.Taking too much magnesium can be life-threatening to both mother and child.
Choice B is wrong because
Choice C is wrong because patellar reflex of +2 is normal and not a sign of toxicity.Loss of deep tendon reflexes can occur with magnesium overdose.
Choice D is wrong because serum magnesium level of 4 mEq/L is normal and not a sign of toxicity.Toxic levels are usually above 8 mEq/L.
Correct Answer is D
Explanation
The client should have a follow-up visit with the provider in a week.This is because preeclampsia can persist or develop after delivery and requires close monitoring of blood pressure and signs of organ injury.
Choice A is wrong because vaginal bleeding is normal after delivery and does not indicate a complication of preeclampsia.
Choice B is wrong because the client should not stop taking blood pressure medication without consulting the provider.Preeclampsia can cause hypertension that may need treatment even after delivery.
Choice C is wrong because breastfeeding is not contraindicated for women with preeclampsia.Breastfeeding may even lower blood pressure and help the uterus contract.
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