A nurse is reviewing the laboratory results of a client with severe pre-eclampsia who is receiving magnesium sulfate.
Which finding would indicate a therapeutic level of magnesium sulfate?
Serum magnesium level of 4.5 mEq/L
Serum calcium level of 8.5 mg/dL
Serum creatinine level of 1.2 mg/dL
Serum potassium level of 3.5 mEq/L
The Correct Answer is A
This indicates a therapeutic level of magnesium sulfate for a client with severe pre-eclampsia who is receiving magnesium sulfate. According to some sources, the effective therapeutic serum magnesium level is 1.8–3.0 mmol/L, which corresponds to 4.2–7 mg/dL or 3.5–7 mEq/L.
Choice B is wrong because serum calcium level of 8.5 mg/dL is within the normal range and does not indicate the effect of magnesium sulfate.
Choice C is wrong because serum creatinine level of 1.2 mg/dL is within the normal range and does not indicate the effect of magnesium sulfate.
Choice D is wrong because serum potassium level of 3.5 mEq/L is at the lower end of the normal range and does not indicate the effect of magnesium sulfate.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
This indicates a therapeutic level of magnesium sulfate for a client with severe pre-eclampsia who is receiving magnesium sulfate.According to some sources, the effective therapeutic serum magnesium level is 1.8–3.0 mmol/L, which corresponds to 4.2–7 mg/dL or 3.5–7 mEq/L.
Choice B is wrong because serum calcium level of 8.5 mg/dL is within the normal range and does not indicate the effect of magnesium sulfate.
Choice C is wrong because serum creatinine level of 1.2 mg/dL is within the normal range and does not indicate the effect of magnesium sulfate.
Choice D is wrong because serum potassium level of 3.5 mEq/L is at the lower end of the normal range and does not indicate the effect of magnesium sulfate.
Correct Answer is B
Explanation
Serum creatinine of 1.2 mg/dL.This indicates a need for further evaluation because it is above the normal range of 0.6 to 1.1 mg/dL for women and suggests kidney impairment.Preeclampsia can affect the kidneys and other organs.
Choice A is wrong because a platelet count of 150,000/mm3 is within the normal range of 150,000 to 450,000/mm3.
Choice C is wrong because proteinuria of 1+ on dipstick is expected in mild preeclampsia.
Choice D is wrong because serum albumin of 3.5 g/dL is within the normal range of 3.4 to 5.4 g/dL.
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