Pharma & Math Calculations

I have found this site helpful. I use it to study for all of my dosage calculations tests. I hope you find it helpful.
http://home.sc.rr.com/nurdosagecal/

I will answer and solve a lot of dosage calculation problems, but they are usually posted in the Nursing Student Assistance or General Nursing Student Discussion Forums. You can see examples of solved problems on this sticky thread in the Nursing Student Assistance Forum:

• http://allnurses.com/forums/f205/dosage-calculations-88867.html - Dosage Calculations

Also, if you do an advanced search of allnurses and use the words "dimensional" or "analysis" along with my screen name, you will get a return of all kinds of threads where students have posted questions on how to solve specific drug calculation questions. I solve using dimensional analysis and the dose desired divided by dose on hand formula. I also recommend that you understand the rules of doing math with fractions:

• http://www.mathleague.com/help/fractions/fractions.htm#simplifyingcomplexfractions - this web page has everything you want to know about fractions
• http://www.visualfractions.com/ - Visual Fractions Tutorials
• http://www.aaamath.com/fra.html#topic26 - Tutorials on working with Fractions

Some other links you might find helpful:

• http://connection.lww.com/Products/morton/documents/pdfs/PT0002.PDF - 90 IV rate calculation problems! And here are the answers to all 90 http://connection.lww.com/Products/morton/documents/pdfs/AK0002.PDF fully worked out and shown to you by both Dimensional Analysis and Ratio methods!
• Older allnurses threads with links to dose calculation web sites
  
  • http://allnurses.com/forums/1797036-post6.html
  • http://allnurses.com/forums/1791518-post2.html
  • http://allnurses.com/forums/1908353-post4.html

Your Welcome! And hey, at least you past!

Now, I don't mean to be rude, just wondering.....what is your grading scale? We have to have at least an 80%. I know each school has something a bit different.

If you want to improve your grade.... just keep workin' on those math problems. I'm not too great at the whole math thing either, but I practice these problems for about a week before my dosage calc tests and periodically during the school year just to keep my mind fresh for those few instances when I actually have to do it in clinicals. There are a couple other sites I use too, but this is one of my favorites.

Okay, heres one for you. Ordered: Pediapred 2mg/kg

Available: Pediapred 5mg/ml

childs weight: 15kg

I took 15 x 2 = 30/5mg/ml and it =he 2ml's 6ml's. Next, I took the 2mg and divided it by 5mg = 0.4. multiplied this x 3 (6/2=3) and got 1.2ml.

However, the instructor wrote the answer out like this:
Give ___mg in ___mls. So, I wrote it like she asked for it and gave 6ml in 1.2 ml's. will this be right?? I know the math is correct (at least I think so) but the way the answer is written is not. So, what do you think?

how can you give 6 mL in 1.2 mLs???

anyway, if you want to break it up into 2 parts as you did, do this:

15kg * 2mg/kg = the order is for 30 mg

30mg * mL/5mg = give 6 mL

answer: give 30 mg in 6 mL

Congratulations!!!