Nurses! facilitate me beside a simple drug calculation query?

The volume remaining is 860 ml.
The drop factor on the set is 60.
The drops per minute (calculated when set up) is 80.

How many minutes will this take?

please tell me the formal for this within the simplest terms,. thank you :)

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Answers:

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If the drop factor is micro-tubing 60gtts/ml (macro-tubing is 15gtts/ml) , .

ml to be infused X gtts/ml (IV set)
--------------------------------------… = gtts/min
min

OK! I GOT IT!! you have to solve for mins.

You are given everything else so,

860 * 60
------------------ = 80
x

Rewrite to be: 80x= 860*60

so 80x =51600

divide by 80, x=645 mins

Remember that formula, fill surrounded by your givens and solve for what you don't have.....


1200 * 15
---------------- = 36
x

36x=1200*15
36x=18000
x=500


*** If you are given a time in hours, convert it to minutes!! *** Source(s): Took me awhile to remember..... :)

Good old Black, Hawks & Keene MedSurg nursing book

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80gtts/min x 1ml/60gtts = 1.33ml/min
1.33ml/1min = 860ml/xmin
x = 860/1.33 = 646min


Do the subsequent one the same way
36gtts/min x 1ml/15gtts = 2.4ml/min
2.4ml/1min = 1200ml/xmin
x = 1200/2.4 = 500min

EDIT: Just a little trick of the trade. When using the drop factor of 60gtts/ml, it's a direct conversion from gtts/ml to ml/hr. For example 80gtts/min = 80ml/hr. Source(s): Pharmacist

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