A nurse is caring for a client with severe pre-eclampsia who is receiving magnesium sulfate.
Which of the following findings would indicate magnesium toxicity and require immediate intervention?
Urinary output of 25 mL/hour
Respiratory rate of 14 breaths/minute
Deep tendon reflexes 1+
Serum magnesium level of 6 mg/dL
The Correct Answer is A
A. Urinary output of 25 mL/hour. This indicates magnesium toxicity and requires immediate intervention because it means the kidneys are not functioning properly and magnesium is not being excreted. Magnesium toxicity can cause life-threatening complications such as respiratory depression, cardiac arrest, and coma.
B. Respiratory rate of 14 breaths/minute is normal and does not indicate magnesium toxicity. A respiratory rate of less than 12 breaths/minute or more than 20 breaths/minute would be abnormal and require further assessment.
C. Deep tendon reflexes 1+ are normal and do not indicate magnesium toxicity. A loss of deep tendon reflexes or clonus would indicate magnesium toxicity and require immediate intervention.
D. Serum magnesium level of 6 mg/dL is within the therapeutic range for preeclampsia and does not indicate magnesium toxicity.
The therapeutic range for preeclampsia is 4 to 7 mg/dL. A serum magnesium level of more than 8 mg/dL would indicate magnesium toxicity and require immediate intervention.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
This is the rationale for using this medication in a client with pre-eclampsia who has a blood pressure of 180/110 mmHg.High blood pressure in pre-eclampsia can cause damage to the kidneys, liver, brain, and other organs, and can also increase the risk of complications for the baby.
Therefore, lowering blood pressure with hydralazine can help prevent or reduce these adverse outcomes.
Choice A is wrong because hydralazine does not reduce cerebral edema or prevent seizures.These are symptoms of eclampsia, a more severe form of pre-eclampsia that requires different treatment.
Choice B is wrong because hydralazine does not increase uteroplacental perfusion or fetal oxygenation.These are affected by other factors such as the placental function, maternal position, and fetal well-being.
Choice C is wrong because hydralazine does not decrease proteinuria or prevent renal damage.
Proteinuria is a sign of kidney impairment that occurs in pre-eclampsia, but it is not directly affected by hydralazine.Renal damage can be prevented by controlling blood pressure and avoiding nephrotoxic drugs.
Correct Answer is C
Explanation
The client should not resume normal activities as soon as she gets home because she is still at risk for complications from preeclampsia.She should rest as directed by her healthcare provider and avoid strenuous activities that may increase her blood pressure.
Choice A is wrong because monitoring blood pressure at home is a recommended practice for clients who had preeclampsia.It can help detect any signs of worsening hypertension or organ damage.
Choice B is wrong because reporting any headache, vision changes, or abdominal pain to the doctor is a crucial step to prevent serious complications from preeclampsia.These symptoms may indicate damage to the brain, eyes, or liver and require immediate medical attention.
Choice D is wrong because continuing to take prenatal vitamins and iron supplements is beneficial for the client’s recovery and health.Prenatal vitamins can provide essential nutrients that may be lacking in the diet, and iron supplements can prevent or treat anemia that may result from blood loss during delivery.
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