A nurse has received an order to administer Morphine 5mg IV once immediately.
The available concentration is 2.5 mg/mL. How many mL of morphine should the nurse prepare for administration?

Choice A rationale
Late decelerations in the Fetal Heart Rate (FHR) are a type of FHR pattern observed during labor, indicating a potential compromise of fetal well-being. They often begin just after a contraction, with their lowest point occurring after the peak of the contraction. These decelerations are associated with maternal and fetal conditions. Changing the client’s position can help alleviate the pressure on the fetus and improve blood flow, potentially reducing the occurrence of late decelerations. Therefore, the first action the nurse should take when noting late decelerations in the FHR is to change the client’s position.
Choice B rationale
Applying a fetal scalp electrode is a method used to monitor the FHR more accurately. However, it is not the first action to take when late decelerations are noted. The priority is to address the potential cause of the decelerations, such as changing the client’s position to improve blood flow.
Choice C rationale
Administering oxygen can help increase the oxygen supply to the fetus. However, it is not the first action to take when late decelerations are noted. The priority is to address the potential cause of the decelerations, such as changing the client’s position to improve blood flow.
Choice D rationale
Increasing the rate of the IV infusion can help improve uteroplacental perfusion. However, it is not the first action to take when late decelerations are noted. The priority is to address the potential cause of the decelerations, such as changing the client’s position to improve blood flow.

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.