A nurse is administering magnesium sulfate IV to a client who has severe preeclampsia.
Which of the following assessments should the nurse perform to monitor for magnesium toxicity? Select all that apply.
Deep tendon reflexes
Respiratory rate
Urine output
Fetal heart rate
Serum magnesium level
Correct Answer : A,B,C,E
The correct answer is choice A, B, C and E. The nurse should monitor for magnesium toxicity by assessing the deep tendon reflexes, respiratory rate, urine output and serum magnesium level of the client who has severe preeclampsia and is receiving magnesium sulfate IV. Magnesium toxicity can cause life-threatening complications such as hypotension, areflexia (loss of DTRs), respiratory depression, respiratory arrest, oliguria, shortness of breath, chest pains, slurred speech and cardiac arrest. The nurse should also have calcium chloride ready as an antidote for magnesium toxicity.
Choice D is wrong because fetal heart rate is not a direct indicator of magnesium toxicity. However, the nurse should still monitor the fetal heart rate and uterine activity per the Electronic Fetal Monitoring (EFM) Guideline.
Normal ranges for the assessments are:
• Deep tendon reflexes: 1+ to 4+ (normal to hyperactive)
• Respiratory rate: 12 to 20 breaths per minute
• Urine output: at least 30 mL per hour
• Serum magnesium level: 4 to 7 mg/dL (therapeutic range for preeclampsia)
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Related Questions
Correct Answer is A
Explanation
Respiratory rate of 10 breaths/min.
This is a sign ofmagnesium toxicity, which can occur when a client receives magnesium sulfate infusion for severe pre-eclampsia.Magnesium toxicity can causemuscle weakness,difficulty breathing,irregular heartbeats, andcardiac arrest.
Choice B is wrong because deep tendon reflexes of 2+ are normal and do not indicate magnesium toxicity.
Choice C is wrong because urine output of 40 mL/hour is adequate and does not indicate magnesium toxicity.
The minimum urine output for an adult is 30 mL/hour.
Choice D is wrong because serum magnesium level of 6 mEq/L is within the normal range of 1.7 to 2.3 mEq/L and does not indicate magnesium toxicity.Magnesium levels above 2.6 mEq/L can indicate hypermagnesemia.
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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