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47,637 Posts

its a pharm dosage conversion question

"9. If a patient is a using respiratory medication that consists of 3 mls of a 0.01% solution and Home Medical, Inc is providing 200 doses per month, what is your monthly billing in milligrams?"

The order is to give 1/8 gr of morphine sulfate IM q4h p.r.n. for pain. On hand are ampules labeled 10 mg per 1 ml. How many milliliters should you give?

Step 1: State the problem in equation form.

Step 2: Identify the conversion factors needed to convert from grams to milliliters. Two conversion factors are needed:

A. Convert from grams to milligrams.

1 gr = 60 mg

B. Convert from milligrams to milliliters.

10 mg = 1 ml

Step 3: Dose on hand is 1 ml = 10 mg

Step 4: Put into the equation:

Step 5: Cancel labels that are the same on denominator and denominator.

Step 6: Compute math

Therefore, 0.75 ml will provide the ordered dose.

oh yeah, found it here : http://www.utep.edu/nurs4710/tutorials/math/test.htm

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4,365 Posts

hey, since your up, can you grab me one too?cath said:

Everybody ought to have some beliefs...I believe I'll have a beer.... hehehe

Oh, math..its bad enough then they have to start adding letters to it! LOL

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288 Posts

Joined

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288 Posts

How much wood would a woodchuck chuck if a woodchuck could chuck wood?

Q: How tall is the average woodchuck?

A: 20inches

Q: how much does the average woodchuck weigh

A: 16lbs

Q: How long is a woodchuck's gestation period?

A:2,592,000 seconds or 720 hours or 30 days

Q: How wide is the average woodchucks paw

A: 4 cm

thanks for clearing it up!!

now hopefully doug didn't ACTUALLY dose someone or something based on that formula!!!

just as an FYI, www.convert-me.com happens to be an awesome website for converting dang near any unit of measure into any unit of measure (of the same measurement type)

HTH

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288 Posts

from this you get 6 mL (drug) (I am assuming this is where you got 60, but I still don't see how that could have happened, unless the 1% solution was wrong, I guessed it wasn't the .01% as previously stated since you said it both ways I assumed you meant 1%)

But we still are stuck with mL of pure drug here, so we must have the density of the pure drug in order to get the mass. So the answer may be 60 mg if you looked it up or something, but you must do it the way shown above, and the density must be 10 mg / mL. To do it just by multiplying through and tacking on the mg unit is incorrect.

If the book this is from didn't give you the density and said the answer was 60 mg, throw it away, it was written by a half-retarded ape child.

Sorry for all this but incorrect units really get my panties in a bunch.

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47,637 Posts

3 mlsx200 doses =600 mls 1% of that is 6 mils(actual med in solution) so 10 mg per Mil =60 mg

which is how medicare insists this med be billed

Thats the right answer on the test, I SUCK at math so I did it by hints and deductive reasoning

And No this was extra credit, I dont have to dose others in my work, as stated my tolerence is fine

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288 Posts

how do you know it is 10 mg / mL?

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