Examples · IV infusion time
Worked example
IV infusion time - practice problem 4
An IV pump is running 500 mL of 0.9% normal saline at 120 mL/hr.
Volume500 mL
Rate120 mL/hr
How long will the infusion take (hours)?
Answer: 4.17 hr
Step-by-step solution
1. Divide the volume by the rate
500 mL ÷ ( 120 mL ÷ 1 hr )
2. Cancel mL and solve for hours
= 500 ÷ 120 hr
= 4.17 hr
3. Convert the decimal hours to hours and minutes
4.17 hr = 4 hr 10 min
= 4 hr 10 min
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