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IV Drip Rate Calculations

Calculating IV Drip Rates

To calculate an IV drip rate based on the volume of fluid to be infused over time.

Drops per minute = Volume to be infused in cc X Drop factor of IV set
(Time in minutes)

To calculate an IV drip rate for a medication that is administered based on a specified dosage to be infused per minute

Drops per minute = Dosage per minute to be administered X Drop factor (60)
(Concentration of medication per ml)

Hint: Make sure the unit measurement of the concentration and the dosage are the same.  i.e. both in milligrams

To calculate an IV drip rate for a medication that is administered based on a specified dosage per kilogram of body weight per minute

Drops per minute = Desired dosage per minute X Weight in Kg X Drop factor of IV set
(Concentration of medication per ml)

Hint: Make sure the unit measurement of the concentration and the dosage are the same. i.e. both in milligrams

Other handy items to review

Convert pounds to kilograms:  Divide pounds by 2.2

1 gram = 1000 milligrams

1 milligram = 1000 micrograms

 

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