It's my understanding that the questions you'll encounter on NCLEX are from a huge test bank; questions someone else had will be unlikely to be on your test. That said, it's impossible to pinpoint any one specific formula for you, because the questions will all be the luck of the draw.
Wishing you much good luck and success! Let us know how it goes for you, OK?
Take what you want, divided by what you have and multiply by the volume/quantity. Example 1: Doctor orders 135mg of amoxicillin, it only comes in 250mg/5ml so:
WHAT YOU WANT: 135MG divided by what you have 250mg multiplied by the volume 5ml=2.7ml OR
Example 2: STOCK 250MG = 135MG CROSS MULTIPLY
250 250 X=675 divided by 250 =2.7ml
Hope that helps. Those two formulas were all we used in the hospital pharmacy that I worked at prior to becoming a nurse. Dimensional Analysis was way over my head. Good Luck.
I always used dimensional analysis to figure out my dosage calculations and for NCLEX, I had one question only that I had to figure how many mLs went into a syringe. In fact, that was my first question. Others are correct, you don't know how many, if any will be on your personal exam. I used to practice 10 different dosage calculations a day to prepare. My advice is to use the method you are most comfortable using. There is a calculator on the screen you can use, anyway. At least they were kind that way...
I am taking the test Tomorow- a little overwhelmed with all the Math.
Can someone or a few of you let me know the top Med formula I should know specifically for the test???
I took the nclex pn yesterdayand dont know if I passed.
Was very rough. I had three mg/kg questions. pedi meds.
Dont laugh but I was so nervous i forgot about the drop down calculator. We coudnt use one in school so I did them out.
I hated those in school so it would figure I Would get them.
My test was 85 questions.
I Have been a wreck since I went but the truth is pass or fail, its not
the end of the world. Just do your best and good luck.:spin:
dimensional analysis is a great way to verify that your answer makes sense. it's easy to get mixed up with when you multiply and when you divide but if you make sure your units work out correctly then you know you're following the correct steps. it's better to understand what you're doing than just memorizing formulas.
Dimensional analysis is way beyond anything that nurses need for math calculations. You are exactly correct though, using the appropriate units, multiplying and dividing to get the units asked for is the key. Unfortunately, this is not how it is taught in nursing school.