# Help Emergency math for meds question! What does gr i ss mean???

1. OKay so im cramming for my second year math validation exam and did most of the problems in the book and can't find this anywhere. I remeber that I knew it last semester in the class but its not in the book and i know it was all over the exam last year. but i cant remember to save my life and the exam is in 6 hours. Please HELP!!!!

gr i ss (with the line over the ss) to mg

Joined: May '06; Posts: 56; Likes: 43
Peds RN
Specialty: Peds

3. 1 gr = 60 mg

The ss with the line over it means "half" - that help?
4. Hey,

I'm not sure what the "i" stands for but the ss with a line over the top means one-half..

"gr" stands for grain,

One grain= 60mg

1/2gr= 30mg

This is the only thing I can think of for that problem..
5. Thanks guys... I still cant figure out what the little i is but hopefully someone will know at school tomorrow. Ugh. Thats what I get for picking up too many shifts during my 2 weeks off and waiting till the last possible minute. Hope everyone is having a great time going back to school, back to school to prove to dad that i'm not a fool (billy madison anyone?) OKOKOKOK ill stop procrastinating even more and study.
6. The i is like roman numerals. i is 1, ii is 2, iv is 4, etc Always with the squiggle over them and yes, the ss is 1/2. We just saw that on our ERI tests & everyone was thrown for a loop. I have only seen it in use in the MAR for PRN meds. When a patient could have 1 or 2 tabs, the nurse used this way to indicate how many she gave.

Dixie
7. gr (grain) i (one) ss (half) is 1/2 half grain

the little i is the roman numeral for 1. You might see it as i or I. With grains it tends to be the smaller case i. therefore ii would be two and iii would be three.

so in the case of the gr i ss it means 1/2 grain which converts to 30 mg (since 60 mg is 1 grain)

8. Quote from CT Pixie
gr (grain) i (one) ss (half) is 1/2 half grain

the little i is the roman numeral for 1. You might see it as i or I. With grains it tends to be the smaller case i. therefore ii would be two and iii would be three.

so in the case of the gr i ss it means 1/2 grain which converts to 30 mg (since 60 mg is 1 grain)

Are you sure? The way my teacher explained it, the ss would mean an additional 1/2. So it would be 1 1/2 grains. I'm not saying that you are wrong. I'm just confused now.

Dixie
9. Quote from midcom
Are you sure? The way my teacher explained it, the ss would mean an additional 1/2. So it would be 1 1/2 grains. I'm not saying that you are wrong. I'm just confused now.

Dixie
Oh wow! I was looking at the example in my book that read gr ss i which is 1/2 grain! Yes Dixie, you are absolutley correct. gr i ss is 1 1/2 grains which would be 90 mg. (1 full grain = 60 and 1/2 gr =30 so he answer would be 60 and 30 making it 90mg.

so, so sorry. It was really early when I read the post.

Oh and wanted to add that roman numerals are in upper cases and apothercary notation i in lower case.

Arabic number 1, 2, 3
Roman Numeral I, II, III
Apothecary Notation i, ii, iii
10. CT Pixie,
I guess we both learned something. I hadn't realized that ss i would mean 1/2 or that ii would be apothecary notation. I was just told it corresponded to the Roman numerals. I wondered why they didn't just use capital letters then. Now I understand.
Thanks. I am about to graduate from PN school in a couple weeks. How much you want to bet, I won't see this on the NCLEX-PN? If I do, I have you to thank and hopefully this helps the original poster.
Now if this would only help with my Acute Med/surg GI & GU test this morning.
Dixie
11. Quote from midcom
CT Pixie,
I guess we both learned something. I hadn't realized that ss i would mean 1/2 or that ii would be apothecary notation. I was just told it corresponded to the Roman numerals. I wondered why they didn't just use capital letters then. Now I understand.
Thanks. I am about to graduate from PN school in a couple weeks. How much you want to bet, I won't see this on the NCLEX-PN? If I do, I have you to thank and hopefully this helps the original poster.
Now if this would only help with my Acute Med/surg GI & GU test this morning.
Dixie
just like IV is four..not 6..you read it 5-1=4, the ss i would be 1 - 1/2=1/2. Whenever there is a smaller number before a larger one (IV, IX, etc or ssii) you subtract the smaller from the larger to get the number.

I have 9mths and 6 days (14 hrs and 49 minutes)before I graduate PN school...but who's counting
12. 1 grain=60mg and ss means half so iss will mean one and a half thus giving u 90mg of the dose
13. Quote from kihara
1 grain=60mg and ss means half so iss will mean one and a half thus giving u 90mg of the dose
^^^ You do realize this thread is 4 years old and that the OP is likely gainfully employed somewhere?