Question on GRAINS and dosage calc

  1. If 1 grain = 60 OR 65 mg who do you know you get your conversions right? When do you use 60 and when do you use 65mg?
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    18 Comments

  3. by   srg4784
    Quote from HeartsOpenWide
    If 1 grain = 60 OR 65 mg who do you know you get your conversions right? When do you use 60 and when do you use 65mg?

    In all my calculations books, and in my health calculations class the coversion was always 60mg=1 gr. I never saw it with 65mg???? Is that in your book?
    Last edit by srg4784 on Sep 19, '06
  4. by   cardiacRN2006
    We learned that as well. I would use 60 or 65 whenever one gave me a 'better' answer, or an answer closer to a whole number...

    So I'd do both calculations and pick which one looked better.
  5. by   iHeartNICU
    We learned that 1 grain = 60, 64, or 65 mg. Why there's 3 different numbers I have no idea. We were taught to do all 3 and like cardiacRN2006 said, we pick the one closest to the whole number. This still doesn't make too much since to me because why on earth can you have 3 different conversions. I haven't come across grains in the hospital setting though so it doesn't seem to be too common, although one of my personal medications comes in grains.
  6. by   srg4784
    Really, that's so weird??? I really don't need anymore confusions for math calculations ..... our nursing applications lecture today...WOW is all I can say, mindblowing, overwhelming, overall confusion. Being taught how to do something the simple easy way and then someone coming a long throwing stuff at you and then going back and changing their answers after they've shown you.... on top of that we had our first "lifespan" test today, WOW too. AHhhhhhhhh
  7. by   cardiacRN2006
    Quote from 1NAmyllion
    I haven't come across grains in the hospital setting though so it doesn't seem to be too common, although one of my personal medications comes in grains.
    I've seen it once. A very old doctor ordered Tylenol in grains!
  8. by   StudentNurseAbby
    We use 60 gr in class because it's what they told us to use. It is annoying though.
  9. by   Marie_LPN, RN
    Was only taught 60.
  10. by   Achoo!
    Only 60 here also.
  11. by   cardiacRN2006
    Technically, 1 grain = 64.79891 milligrams. Or so says Google...
  12. by   locolorenzo22
    I've seen 60 & 65 in the book, but we're told to use 60 as it usually will result in an easier calculation.
  13. by   Leopardspots85
    I Am Now Taking This Class And In My Book It Says 60-60 But The Teacher Just Told Us To Use 60 If That's The Case Then Why Put In The 65?
  14. by   originals
    RE:Question on grains dosage cal. i ran into a similar problem saunders comprehensive review book chpt.17 pg 187 box17-3 explaining how to convert grains to mg i understood that 1gr=60mg yet they have 15gr=1000mg or 1g i got 900 mine boggling to me is it a book error or my miscalulation can some one explain, always willing to learn.

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