Examples · IV flow rate (mL/hr)
Worked example
IV flow rate (mL/hr) - practice problem 2
An order reads: infuse 250 mL of lactated Ringer's over 45 minutes using an IV pump.
What rate (mL/hr) should the pump be set to?
Answer: 333 mL/hr
Step-by-step solution
1. Divide the volume by the time, converting minutes to hours
250 mL ÷ 45 min × ( 60 min ÷ 1 hr )
= 333.33 mL/hr
2. Round to a whole mL/hr the pump can be set to
333.33 mL/hr ≈ 333 mL/hr
= 333 mL/hr
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