gr V and gr X - what does it mean?

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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!

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speedykicks said:
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.

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speedykicks said:
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

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Specializes in Psychiatry.
speedykicks said:
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...

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Diane-RN Student said:
I'm almost positive SR= sustained release...

thanks - roman numerals - duh! I appreciate the help everyone.

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Specializes in Med-Surg, OB/GYN, L/D, NBN.
Diane-RN Student said:
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" :coollook:

Apothecary measurments that we all thought they were just trying to screw with our head with... like minums :p

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Specializes in Education, FP, LNC, Forensics, ED, OB.
Diane-RN Student said:
I'm almost positive SR= sustained release...

Yes, you are correct, Diane-RN Student. :balloons:

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!! :balloons:

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