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Maths for Nurses Dosage calculations. Skills Team. The formula is W x I G 60 X 2 = 120 = 1.2 mL 100 1.2 mL of stock should be drawn up . # 1. W = What you want. G = What you have got. I = What it is in. - PowerPoint PPT Presentation
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Maths for NursesDosage calculations
Skills Team
# 1W = What you want.
G = What you have got.
I = What it is in.
60 mg of pethidine is ordered.
Stock ampoules contain 100 mg in 2 mL.
So here W = 60 mg
G = 100 mg and I = 2 mL.
The units of Want and Got are the same – both are in mg.
Skills Team 2012
The formula is W x I G
60 X 2 = 120 = 1.2 mL 100 100
1.2 mL of stock should be drawn up.
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