# gr V and gr X - what does it mean?

1. First semester nursing student here - preparing for a med cals exam. I can't find the answer to this anywhere in my book - can someone please tell me the conversion of gr V and gr X into mg?

Also, while you're at it - what does the code "SR" indicate??

thanks a ton!
•
2. 6 Comments

3. Quote from speedykicks
First semester nursing student here - preparing for a med cals exam. I can't find the answer to this anywhere in my book - can someone please tell me the conversion of gr V and gr X into mg?

Also, while you're at it - what does the code "SR" indicate??

thanks a ton!
I'm pretty sure gr i (one grain) is equal to 60 mg. gr v (five grains), gr x (10 grains) you can do the multiplication.

No clue what SR stands for. I'm a first semester student as well.
4. Quote from speedykicks
First semester nursing student here - preparing for a med cals exam. I can't find the answer to this anywhere in my book - can someone please tell me the conversion of gr V and gr X into mg?

Also, while you're at it - what does the code "SR" indicate??

thanks a ton!
gr V = grain 5

gr X = grain 10

V, X, are like roman numerals.

You multiply grains by 65 (ask your instructor because some use 60) to get mg. Example: Doctor orders grains 10 tylenol. You have 325 mg/tab tylenol on hand.

multiply 10 by 65 = 650
divide 650 by 325 = 2 tabs

Do you see?

Not sure what SR code is...

~Crystal
5. Quote from speedykicks
First semester nursing student here - preparing for a med cals exam. I can't find the answer to this anywhere in my book - can someone please tell me the conversion of gr V and gr X into mg?

Also, while you're at it - what does the code "SR" indicate??

thanks a ton!
I'm almost positive SR= sustained release...
6. Quote from Diane-RN Student
I'm almost positive SR= sustained release...
thanks - roman numerals - duh! I appreciate the help everyone.
7. Quote from Diane-RN Student
I'm almost positive SR= sustained release...

Yeah... SR is sustained release.. ER = extended release

My instructors used 60 mg= 1 grain Not many people use grains anymore although we do have one dr who orders Tylenol "gr 10"

Apothecary measurments that we all thought they were just trying to screw with our head with... like minums
8. Quote from Diane-RN Student
I'm almost positive SR= sustained release...
Yes, you are correct, Diane-RN Student.

And a couple others:

CR=continuous release
ER=extended release

You should be able to find these terms in the drug handbooks/PDRs.

Oh, and to OP.....good luck on your exam!!

close