A nurse is reviewing a client’s prescription for 1,000 ml of 5% dextrose in water IV to infuse over 8 hr. At 1400, the nurse observes that there is 500 ml of solution remaining in the client’s current IV bag. At what time should the nurse administer the next bag of IV solution?
A.
1700
B.
1600
C.
1500
D.
1800
The Correct answer and Explanation is:
The correct answer is B. 1600.
Explanation:
To determine the appropriate time to administer the next bag of IV solution, follow these steps:
- Calculate the Infusion Rate:
- The total volume to be infused is 1,000 ml.
- The infusion time is 8 hours.
- The infusion rate can be calculated as follows:Infusion Rate=Total VolumeTotal Time=1000 ml8 hours=125 ml/hour\text{Infusion Rate} = \frac{\text{Total Volume}}{\text{Total Time}} = \frac{1000 \text{ ml}}{8 \text{ hours}} = 125 \text{ ml/hour}Infusion Rate=Total TimeTotal Volume=8 hours1000 ml=125 ml/hour
- Determine the Volume Infused by 1400:
- By 1400, the nurse observes that 500 ml of the solution remains, which means that 500 ml has already been infused.
- To find out how much time has elapsed, calculate:Time Elapsed=Volume InfusedInfusion Rate=500 ml125 ml/hour=4 hours\text{Time Elapsed} = \frac{\text{Volume Infused}}{\text{Infusion Rate}} = \frac{500 \text{ ml}}{125 \text{ ml/hour}} = 4 \text{ hours}Time Elapsed=Infusion RateVolume Infused=125 ml/hour500 ml=4 hours
- Therefore, the infusion started at:1400−4 hours=10001400 – 4 \text{ hours} = 10001400−4 hours=1000
- Calculate the Time for the Next Bag:
- Since 500 ml of the solution remains to be infused, the remaining infusion time is:Remaining Volume=500 ml\text{Remaining Volume} = 500 \text{ ml}Remaining Volume=500 ml Remaining Time=500 ml125 ml/hour=4 hours\text{Remaining Time} = \frac{500 \text{ ml}}{125 \text{ ml/hour}} = 4 \text{ hours}Remaining Time=125 ml/hour500 ml=4 hours
- Adding this remaining time to the current time (1400) gives:1400+4 hours=18001400 + 4 \text{ hours} = 18001400+4 hours=1800
However, it’s crucial to understand that the next bag of solution should ideally be started before the current one runs out. Since 500 ml is remaining and it’s expected to last for another 4 hours (until 1800), the next bag should be administered by 1600, giving time for a smooth transition without interruption.
Thus, the nurse should administer the next bag of IV solution at 1600 to ensure continuous infusion and avoid any interruption in the IV therapy