# help me calculate this problem..

1. 1. An infusion ordered of 2g in 500 mL is ordered at 60mL/hr

2g/500mL ???
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Joined: Dec '12; Posts: 143; Likes: 20
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3. Quote from EmilyEmily
1. An infusion ordered of 2g in 500 mL is ordered at 60mL/hr

2g/500mL ???
What is the question asking? What you posted here isn't a question, it's an order telling you that you are to infuse a medication which contains 2g in 500 mL of fluid at 60 mL/hr.
4. There is no question here as posted......and we have helped you a lot....show us what you think first so we can see what you aren't getting
5. An infusion of 2g in 500mL is ordered at 60mL/hr

what is the mg/min dosage?

and what is the mg/hr dosage?

2g/500mL but how do I convert g to ml?
6. Quote from EmilyEmily
An infusion of 2g in 500mL is ordered at 60mL/hr

what is the mg/min dosage?

and what is the mg/hr dosage?

2g/500mL but how do I convert g to ml?
You don't "convert" g to mL, you convert g to mg and then you figure out the concentration.

You have 2 g in 500 mL. So how many mg does that mean you have in 500 ml? How many mg in 1 mL? That's your concentration. So you then know your concentration is X mg/mL and the rest is just plugging in numbers.
7. Emilyemily, Emilyemily, dear, we have shown you how to do that several times already. Think, dear. There is no magic in this. If you have 300 total cookies in six boxes, how many cookies are there in each box? If you eat half a box a day, how many cookies will you eat on Tuesday? If you eat half a box a day, how many cookies will you eat on Weds, Thurs, and Fri?
See? It's not that hard.

First: If you have 2 grams in 500 ml, how do you figure out how many mg there are in 500 ml?

Then: How do you figure out how many mg in 1 ml?

Then: How many mg are there in 60 ml?

Show your work and I hope nobody gives it to you here because you need, desperately, to figure out how to think about these kinds of problems.
Last edit by nurseprnRN on Jan 28, '13
8. 2000mg/500mL =4
2000mg/500mL x 60mg/1hr= 240mg/hr

is that right?
9. Quote from EmilyEmily
2000mg/500mL =4
2000mg/500mL x 60mg/1hr= 240mg/hr

is that right?
You have the right answer but I can't see how you got there. In your first line, your answer would be 4mg/cc. Keeping the right units is important.

Then your next step would be 4mg/cc x 60cc/hr, and that would come out to be the 240 mg/hr.

If you want us to help you, show us your work first so we can either 1) say Brava! or 2) show you where you need to think about it some more.
10. Quote from EmilyEmily
2000mg/500mL =4
2000mg/500mL x 60mg/1hr= 240mg/hr

is that right?
Exactly. Your concentration is 4 mg/mL. You're infusing the medication at 60 mL/hr so if you multiply that by 4 mg/mL, you know you are infusing 240 mg in an hour.

11. I'm having trouble finding the flow rate with this problem

A 3mg/min dosage is ordered. The solution strength is 2g in 500 mL. What is the mL/hr flow rate?

2g/500mL...

I dont know what the mL/hr flow rate formula is..my book does not show me how to do this type of problem
12. You just need to convert your minute to hour it the same thing ..
13. Quote from EmilyEmily
I'm having trouble finding the flow rate with this problem

A 3mg/min dosage is ordered. The solution strength is 2g in 500 mL. What is the mL/hr flow rate?

2g/500mL...

I dont know what the mL/hr flow rate formula is..my book does not show me how to do this type of problem
So you have the same concentration as before. Your book doesn't "show" you how to do this because the authors assume you know how many minutes are in an hour.

You are infusing 3 mg in one minute... so how many mg are you infusing in an hour? You know your concentration so all you have to do is plug in the numbers to convert to mL/hr.
14. 2000mg/500mL x 3mg/60min

i get the wrong answer with this formula