An IV infusion is to be administered over 4 hours. If the total volume is 400 ml, how many ml/hr should be delivered?

To determine the correct flow rate in ml/hr for an IV infusion, you need to divide the total volume of the infusion by the total time over which it is to be administered.

In this scenario, the total volume of the IV infusion is 400 ml, and it needs to be infused over a period of 4 hours. The calculation is as follows:

1. Total Volume = 400 ml

2. Total Time = 4 hours

Using the formula:

Flow Rate (ml/hr) = Total Volume (ml) ÷ Total Time (hr)

Substituting the values:

Flow Rate = 400 ml ÷ 4 hr = 100 ml/hr

This result shows that the infusion should be delivered at a rate of 100 ml/hr to ensure that the entire volume of 400 ml is administered in 4 hours.

Therefore, the calculated flow rate of 100 ml/hr aligns with the requirements of the IV infusion. This highlights the importance of accurately calculating infusion rates to achieve the desired therapeutic outcomes and maintain patient safety.