dosage calculation

[waterwater]

hi there,anyone please help me how to solve this dosage calculation using dimensional analysis.

A patient is to receive Digoxin 0.25 mg IV push at a rate of 0.5 ml/minute. The ampule contains Digoxin 0.25mg/ml. How many milliliters of Digoxin would you administer and over how much time would you administer this dose?

[TheSquire, DNP, APRN, NP]

Set up your chain of multiplication so that the units cancel out. Beyond that, which is really just a restatement of what dimensional analysis is, I don't know how to help you here without giving you the answer outright.

[CrazierThanYou]

I start nursing school next week and frankly, I would just like to know WHAT dimensional analysis IS?

I think I saw this question on DosageCalculation.com.

[TheSquire, DNP, APRN, NP]

It's the way you learned to do unit conversion in Chem 101.

[CrazierThanYou]

Oh great. Chemistry was a LONG time ago and I think I blocked the entire experience out.

[BacktotheBeach, ADN, BSN, RN]

Oh great. Chemistry was a LONG time ago and I think I blocked the entire experience out.

:)Me too!! My school wants us to use the ratio and proportion method, but I want to understand dimensional analysis, too!!

[braithiar]

Here's a link to some basic info on DA. It's usually taught in algebra classes (intermediate algebra, I think); though a refresher is common in early chemistry.

It's very easy. Don't let the name fool you.

-B

[TheSquire, DNP, APRN, NP]

If you click on the 'dimensional anaylsis' tag I put on this thread, you get shown a list of other relevant pages on allnurses including this blog post on nursing math resources, from which I found this website explaining dimensional analysis not once but twice.

[TheSquire, DNP, APRN, NP]

Here's a link to some basic info on DA. It's usually taught in algebra classes (intermediate algebra, I think); though a refresher is common in early chemistry.

It's very easy. Don't let the name fool you.

-B

I actually like this website better, as it emphasizes the simplicity of DA rather than making it harder by breaking it down into tiny incremental steps.

[braithiar]

I actually like this website better, as it emphasizes the simplicity of DA rather than making it harder by breaking it down into tiny incremental steps.

I like it for the same reason. It's so short, but it was infinitely useful when I was tutoring students on DA.

-B

[CrazierThanYou]

Thanks! I had googled it earlier and got a lot of examples but the ones using meds are the most helpful!

[CrazierThanYou]

I still can't get the answer to this question. I can't figure it out how to set it up.

I have: .25mg 0.5mL

______ x ________ = mL

mL 1 min

I am leaving something out...

Sorry, its been a long time since I've been to school or done math!