Math Problem Procalc I cant seem to figure out!

Tagamet (Cimetidine) is available in liquid form labeled 300 mg in 5 mL. 0.3 g of Tagamet has been prescribed PO. How many mL should you administer?

Can anyone help me out here, on the practice questions it says the answer is 5mL

But I dont see how. Can you let me know how you would figure this out?

Thank you in advance!

Read the question again, carefully (I had to read it twice too).

You're giving 0.3 g, not 0.3 mg.

0.3 g = 300 mg

There are 300 mg in 5 mL, so give the whole 5 mL.

0.3ml = 300mg

Amt. ordered/ Amt. available X strength = dose

Please review the Metric System so you can get used to it.

Doesn't your teacher teach basic metric conversion changes?

I think it was probably a matter of the OP not reading the question carefully enough.

And yes, a simple oversight as nurse can be dangerous, but that's why we go to school and do tons of practice problems and ask questions. Hopefully, this will help her remember to slow down and double check things in her daily practice so she can develop into a safe, competent nurse. Better on a homework question than on a patient!

0.3 ml does not equal 300mg.

0.3g equals 300mg

you're right, i mis-wrote. i stand corrected.

** the formula,however, is right.

Yes you need to know this but you will learn it. You did the right thing asking for help. And when someone asks you this question, you will help that person find the answer without an attitude.

5 ml x 1000 mg x 0.3 g

300 mg 1 g

1500

300

5

moved to General Nursing Student Discussions forum :)

The easiest way to remember the metric conversion chart is to remember this saying...

King Henry Died By Drinking Chocolate Milk

The K is Kilograms

The H is Hectocrams

The D is dekagrams

The B is your base (grams)

The D is decigrams

The C is centigrams

The M is miligrams

So if your on the base uint of grams your going to move your decimal point over to to right 3 times.. If your on the mg and want to go to grams move the decimal over 3 spaces to the left...

and just remember if you need to get mcg then your going to add 3 more spaces to the right of the decimal in mg.

If your at grams and need to go to mcg then your going to move the decimal over 6 places to the right

Hope this helps you remember!! If you need extra help let us know and we will be glad to help!!