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
The priority finding for a nurse caring for a client receiving opioid epidural analgesia during labor would be a blood pressure of 80/56 mm Hg. This could indicate hypotension, a known side effect of epidural analgesia. Hypotension can lead to decreased perfusion to vital organs, including the placenta, potentially compromising the fetus. Immediate interventions might include positioning the patient on her side, increasing the rate of IV fluids, and notifying the healthcare provider.
Correct Answer is D
Explanation
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G (Gravida): Total number of pregnancies → 4
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T (Term births): Delivered at 37 weeks or more → One (39 weeks) → T = 1
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P (Preterm births): Delivered between 20–36 weeks → Twins (34 weeks, 1 pregnancy) + One at 35 weeks = 2 preterm pregnancies → P = 2
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A (Abortions): Pregnancies ending before 20 weeks → 0
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L (Living children): One from term birth, two from twins, and one from the other preterm = 4 living children → L = 4
Correct Answer: D. G4 T1 P2 A0 L4
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