1. Please help. I have a test tomorrow and I can not for the life of me figure this out. Problem: Dopamine 250 mcg/min
Concentration: 400 mg dopamine in 250 ml D5W.

need to know ML/HR

Drip factor is 60 gtts/ml

Please work it out line by line. I am a horrilbe math person when it comes to these drips. thanks in advance.
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Joined: Feb '07; Posts: 316; Likes: 47
Registered Nurse; from US

3. Quote from blynn9173
Please help. I have a test tomorrow and I can not for the life of me figure this out. Problem: Dopamine 250 mcg/min
Concentration: 400 mg dopamine in 250 ml D5W.

need to know ML/HR

Drip factor is 60 gtts/ml

Please work it out line by line. I am a horrilbe math person when it comes to these drips. thanks in advance.
If you only need to know ml/hr, disregard the drip factor.

Since you need to know the hourly rate (ml/hr), the first thing to do is multiply the ordered dosage by 60: 250 mcg/min x 60 = 15000 mcg/hr

Next, look at the medication available -- it's in milligrams, not micrograms, so you'll need to convert 15000 mcg to milligrams: 15000 mcg/1000 = 15 mg.

So, the ordered dose is 15 mg/hr. You have 400 mg in 250 ml D5W on hand. You can next get ml/hr by using the D/H x Q formula: 15/400 x 250 = 9.375 ml/hr (follow whatever your teacher's instructions are on rounding)

Hope that helps!
4. Here's a website...it's sort of out-dated (2006), but I found it to be a helpful resource. Hope it helps!

http://www.americannursetoday.com/as...d73cf4681a.pdf

Good Luck!
5. thanks so much
6. Can anybody help me with this problem Aminophylline 25 mg/hr
Concentration 500 mg of amniophylline in 250 ml

how many ML/Hr?

thanks
7. 250ml x 25mg / 500mg = you get what ever ml/hr
8. moved to the general student discussion forum

Plenty of math threads both in this and nursing student assist forums