50 grams of Magnesium sulfate is added to 1L of Lactated Ringers.
After giving an initial loading dose, the nurse is to infuse a maintenance dose of 2 gm/hr. What rate should the IV pump be set at?
10 mL/hr
20 mL/hr
30 mL/hr
40 mL/hr
The Correct Answer is D
Step 1 is to calculate the total amount of Magnesium sulfate in the solution. This is done by multiplying the amount of Magnesium sulfate per mL (which is 50g/L or 0.05g/mL) by the total volume of the solution (which is 1000mL). So, 0.05g/mL × 1000mL = 50g.
Step 2 is to calculate the rate of the IV pump. The maintenance dose is 2g/hr. So, if there are 50g in 1000mL, then 2g would be in (2g ÷ 50g) × 1000mL = 40mL. Therefore, the IV pump should be set at 40 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
The correct transcription of two tenths of a milligram is 0.2 mg. This format avoids any potential confusion that could lead to a medication error.
Choice B rationale
While 0.20 mg is technically correct, it is not the preferred format. The trailing zero after the decimal point is unnecessary and could potentially lead to confusion.
Choice C rationale
20 mg is not correct. This is 100 times the intended dose of two tenths of a milligram, and could lead to a serious medication error.
Choice D rationale
2 mg is not correct. This is 10 times the intended dose of two tenths of a milligram, and could lead to a medication error.
Correct Answer is A
Explanation
Choice A rationale
Given the client’s symptoms and the fact that she is 34 weeks pregnant, the client is most likely experiencing preeclampsia. One of the severe complications of preeclampsia is eclampsia, which is characterized by the onset of seizures. Therefore, implementing seizure precautions would be an appropriate action for the nurse to take. The nurse should monitor the following parameters to assess the client’s progress: Blood pressure readings: Regular monitoring can help detect any sudden increases, which could indicate worsening preeclampsia. Urine protein levels: Protein in the urine is a common sign of preeclampsia and should be monitored regularly.
Choice B rationale
Checking deep tendon reflexes every hour could be part of the care plan for a client with preeclampsia. Hyperreflexia can be a sign of worsening preeclampsia and impending seizure activity.
Choice C rationale
Methyldopa is a medication that can be used to control blood pressure in pregnant women. However, the question does not provide information that the client has been prescribed this medication.
Choice D rationale
Monitoring neurologic status is important in a client with preeclampsia due to the risk of eclampsia, which can cause seizures and other neurologic complications. However, implementing seizure precautions is a more immediate action to address the client’s condition.
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