Examples · IV infusion time
Worked example
IV infusion time — practice problem 6
An IV pump is running 100 mL of lactated Ringer's at 80 mL/hr.
How long will the infusion take (hours)?
Answer: 1.25 hr
Step-by-step solution
1. Divide the volume by the rate
100 mL ÷ ( 80 mL ÷ 1 hr )
2. Cancel mL and solve for hours
= 100 ÷ 80 hr
= 1.25 hr
3. Convert the decimal hours to hours and minutes
1.25 hr = 1 hr 15 min
= 1 hr 15 min
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