Gtts means "guttae", drops. Its a latin term.
The speed of D5W should be 30 gtts/min
the IV tube is of 18gtts/mL (or cc)
[cc : cubic centimeter and 1cc = 1mL]
We have to deliver 1200mL
There are 18gtts in one millilitre
or for one mL we need 18gtts
So for 1200mL we need = 18 X 1200 gtts = 21600 gtts
as the speed is 30gtts / minute
so the time taken in minute for 1gtts will be = 1 / 30 minutes
for 21600 gtts time taken in minutes = 21600 / 30 = 720 minutes
60 minutes equals one hour
so time in hours required or taken for infusion of 1200mL = 720 / 60 = 12 hours
