IV infusion time (using IV pump)

IV infusion time

IV pump
No IV pump
enter volume
enter ml/hr
enter gtts/min
enter IV calibration 
hours
minutes

Formulas

Basic Time

Volume
Rate		 = Hours

Time Calculated Using IV Tubing Only

Volume / (    gtt/min 
Calibration		 x  60 ) = Hours

Examples

1. Using a volumetric IV pump calculate to duration of 1000 mL of normal saline infusing at 125mL/hour.

select "IV pump"
volume = 1000 milliliters
rate = 125 mL/hr

Actual formula:

1000mL
125		 = 8 Hours

Example Only! Does Not Work

2. There are 250 mL of D5W infusing at 33 gtt/min on IV tubing calibrated at 10 gtt/mL.  Calculate the infusion time.

select "No IV pump"
volume = 250 mL
rate = 33 gtt/min
calibration = 10 gtt/mL

Actual formula:

250 / (  33 gtt/min
10		 x  60 ) = 1.26 Hours

0.26 x 60 = 16 minutes
So 1.26 Hours = 1 Hour & 16 minutes

Example Only! Calculator does not work.

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