question about hourly rate of infusion

by Paula
(PA)

A bag of saline with an infusion apparatus is labeled 15 gtt/ml. The flow rate is 60 gtt/min. What is the hourly rate of infusion?

Help! Is this the formula to use?
F = V/T
Then solve 15/60 ? I am really stuck on this one. Thanks so much.


Reply (keith) : I'm not sure what formula you're trying to use there? I have a feeling that trying to put a formula on it may be getting in your way. Let's just look at it in practical terms...

O.K., so in this case:

You know that every minute- 60 drips will drop

You also know that each time 15 drops fall = 1mL

So, how many mL are infused in one minute?

60 ÷ 15 = 4mL per minute

How many minutes in 1 hour?

60 (min) X 4 (mL) = 240ml



Formulas are great and you need to learn them eventually, but sometimes while learning it's better to just work it out on paper. Thanks for the question.

For more practice on IV infusion calculations, go to This Page

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