mcg/kg/min

Apr 30, 2009 06:20 PM

by Couture85

A continuous dopamine drip is infusing at 12 ml/hr. Patient weight is 154 lbs. Calculate dose of drug in mcg/kg/min if the label on the bag reads 800 mg in 250 ml, equivalent to 3200 mcg/ml.

HELP!

Idaho Murse2b · Apr 30, 2009, 06:49 PM

Re: mcg/kg/min

the 800mg in 250mL and 3200mcg/mL doesnt add up to me. are you sure you have your numbers right?
In my mind I get 2 different answers
pt wt=70kg
My first answer is 800*10(mg>mcg)/250mL=32mcg/mL, 32mL*12mL(per hour)=384mcg per hour, 384mcg/70kg=5.49mcg/kg/hr....=0.091mcg/kg/min

Answer 2 using 3200mcg/mL
3200mcg/mL*12mL/hr=38400mcg/hr, 38400mcg/70kg=548.57mcg/kg....=9.14mcg/kg/min

cursedandblessed · Apr 30, 2009, 06:57 PM

Re: mcg/kg/min

I think it's idahoMurse2B's second answer.

Couture85 · Apr 30, 2009, 08:17 PM

Re: mcg/kg/min

yes, 9.14 is it! Thank you so, so much!

Couture85 · Apr 30, 2009, 08:25 PM

Re: mcg/kg/min

I need to see how it's worked. Would someone write it out totally just so I can see how to do it?

*Daytonite* · Apr 30, 2009, 09:19 PM

A continuous dopamine drip is infusing at 12 ml/hr. Patient weight is 154 lbs. Calculate dose of drug in mcg/kg/min if the label on the bag reads 800 mg in 250 ml, equivalent to 3200 mcg/ml.

12 mL/hour (infusion rate) x 3200 mcg/mL (dose on hand) x 2.2 Kg (conversion to kilograms)/154 pound (patient weight) x 1 hour/60 minutes (conversion factor) = 9.1428 mcg/kg/minute, rounds off to 9.14 mcg/kg/minute

Couture85 · Apr 30, 2009, 09:33 PM

Re: mcg/kg/min

You're an angel! Thank you so much!!

Couture85 · Apr 30, 2009, 09:53 PM

Re: mcg/kg/min

Would someone work this one out so that I can see how it's done? A 90 kg patient is receiving Levophed at 60ml/hr. The label on the bag reads 8 mg in 1000 ml of 5% dextrose. How many mcg/kg/min is the patient receiving?

I failed pharmacology last semester and if I don't pass my final, I'm out of nursing. I truly appreciate all of the help I'm getting here. You guys are the best!

TheSquire · May 01, 2009, 04:22 AM

Re: mcg/kg/min

...you passed gen chem? This is a simple unit problem.

Couture85 · May 01, 2009, 04:27 AM

Re: mcg/kg/min

Geez, thanks for being kind.
No, we don't have to have chemistry at my school.

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mcg/kg/min

mcg/kg/min

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