A nurse is ready to infuse 5% dextrose in 0.45% sodium chloride 1,000 mL over 12 hours. At what rate should the IV pump be set?

To determine the infusion rate in mL/hr for the IV pump, you need to first calculate the total volume to be infused and then divide it by the total time over which the infusion will take place.

In this scenario, you have a total volume of 1,000 mL of the solution to be infused over a duration of 12 hours. To find the rate at which the IV pump should be set, you can use the following formula:

Infusion rate (mL/hr) = Total volume (mL) / Total time (hr)

Substituting the given values into the formula:

Infusion rate = 1,000 mL / 12 hr = 83.33 mL/hr

Rounding to the nearest whole number, the infusion rate would be set at 83 mL/hr. This calculation directly corresponds to the correct answer, which ensures that the full 1,000 mL will be infused over the designated 12-hour period. Therefore, setting the IV pump at 83 mL/hr is the appropriate choice to achieve the desired infusion timing.