Dosage question ;)


0Dec 5, '12 by NursieNurseLPNOr try it the long way this always helped me to understand the concept & double check my answers. 1 grain = 6065mg, you use whichever comes out with the even number usually. Unless instructed otherwise

0Dec 5, '12 by NursieNurseLPNAnswer i believe would be 2ml. You use 1gr is to 60mg. So if it says 1/300 you would divide 60into 300 which equals 0.2. So 0.4mg is to x ml as 0.2 is to 1ml. 0.2x=0.4, 0.4 divided by 0.2 equals 2. I BELIEVE! But i did that in my head without double checking it so you definately should! Lol good luck

0Dec 6, '12 by KikikinsQuote from KkccsrThis is the way I did it... I just passed my Pharmacology Mathematics exam last week 100%.For some reason I just cannot grasp the whole grains concept.... Can anyone help with this question? Order: atrophine sulfate gr 1/300 sc statSupply: atrophine sulfate 0.4 mg per mLGive: ? mL
Atropine is a gr 1 = 60mg (the 64.8 standard has been phased out it seems and gr 1 = 65mg only applies to Acetaminophen and Iron  as per my instructor).
gr 1/300 = 0.00333 x 60mg = 0.2mg
Using Order / Available (aka Desired / Have)...
0.2mg / 0.4mg x 1ml = 0.5ml
Answer = 0.5ml 
0Dec 6, '12 by NursieNurseLPNLol yes^^^^^. See that why you dont do it in your head!! Ive always mad that mistake x2 or divided by 2. Sorry!! : )

0Dec 7, '12 by KikikinsPookyP  there's a great video for drug dosages from Khan Academy, they don't have much yet but it's a solid start.
http://www.khanacademy.org/math/alge...edrugdosage
Also if anyone needs PN math help just message me. 
0Dec 7, '12 by pookypQuote from KikikinsLove khan academy. Thanks! I hope there are more videos to come.PookyP  there's a great video for drug dosages from Khan Academy, they don't have much yet but it's a solid start.
http://www.khanacademy.org/math/alge...edrugdosage
Also if anyone needs PN math help just message me.