In Intravenous Therapy, you will need to calculate the fluid rate for infusion in mL/hr. You will need to take into account the time (in hours) to set the intravenous pump. The formula to calculate the fluid rate is:

Note: The volume must be in millilitres (mL).

Example 1:

If an anaesthetist orders N/Saline 1 L to run over 8 hours, the formula will look like this:

1000 mL= 125 mL/hr. Therefore, you will set the intravenous rate at 125 mL/hr

8 hrs

Note that we converted 1 L into 1000 mL as we need to use the volume ordered in mL

Note that if the time is given in minutes, you will need to convert minutes into hours to use this information in the formula. Alternatively, you can use this formula:

Rate(mLhr)=Volume(mL)x60Time(inmin)

Discuss forthe example belowif the rate of infusion is properly calculated:

105 mL of fluid needs to be infused over 30 minutes:

Rate(mLhr)=Volume(mL)60Time(inmin)=105mL6030min=210mLhr

If it is not correct, what is wrong?