I have a "grains" nursing dosage question.?

Question

I'm practicing for my dosage citical for next week. I need some help with this grains problem...

Atrophine gr 1/100 IM. You have on hand gr 1/150. How many ml's will you give? (thats all the problem says)

Grains is about the only thing that is really giving me trouble.
If you know a simple way to work this problem please work it out and perhaps decsribe what youre doing. Maybe someone elses technique willbe me remember/learn grains better.

Thanks!!!!

Answer 1

It sounds like the problem is to find how many units of 1/150 are required to give a dose of 1/100:

(1/150)x = 1/100→ x = 1.5

Technically I can't answer this ? at all since no relationship between grains and ml is given. Grains = mass; ml = volume. I also had to google IM; my best guess for what you mean by that is intra-muscular.

That's why x (above) has no units attached.........

Answer 2

If your order is for gr 1/100 and your concentration is 1/150 per ml ( a big if, but we have to make some assumption, since you seem to have omitted that important little point) then the measurement in grains really has nothing to do with the problem. You just have to give 1 1/2 ml. It's a simple fraction problem, not a matter of what system of measurement you're using.

Answer 3

You're missing a number. You need one that says how many grains per mL. or perhaps it will have a different unit per mL.