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.
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Correct Answer is C
Explanation
If a patient in labor at 40 weeks of gestation reports saturating two perineal pads in the past 30 minutes, and placenta previa is suspected, an appropriate nursing action would be to prepare for a cesarean birth. Placenta previa, where the placenta partially or completely covers the cervical opening, can cause significant bleeding and is typically managed with a cesarean delivery to prevent further bleeding and ensure the safety of the mother and baby.
Correct Answer is A
Explanation
Step 1 is to calculate the volume of Toradol to be drawn up. Toradol is available in 60 mg/mL. Therefore, to administer a dose of 30 mg, the nurse would need to draw up 30 mg ÷ 60 mg/mL = 0.5 mL.
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