A little help with this math problem please...

[CrystalClear75, BSN, RN]

A septic client with hypotension is being treated with dopamine hydrochloride(Inotropin). The nurse asks a colleague to double check the dosage the client is receiving. There are 400mg of dopamine hydrochloride in 250 ml, the infusion pump is running at 23ml/hr and the client weighs 79.5kg. How many micrograms per kilogram per minute is the client receiving?

I keep getting this wrong for some reason.

[jadu1106]

Sunnybunny75,

Is the answer 7.71 mcg/kg/min?

If so, let me know and I will write the work-up here on how I got the answer....

:) jadu1106

[CrystalClear75, BSN, RN]

Sunnybunny75,

Is the answer 7.71 mcg/kg/min?

If so, let me know and I will write the work-up here on how I got the answer....

:) jadu1106

Yes it is...:)

[Do-over, ASN, RN]

I got 7.71mcg/kg/min

1. Figured How many mg per hour (36.8)

2. Then converted to mcg per hour (36800)

3. Then mcg per min (613.33)

4. then divided mcg/min by client weight

[jadu1106]

yes it is...:)

here you go sunnybunny!

[color=#17365d]you are looking for mcg/kg/min

[color=#17365d]you have 400 mg of dopamine in 250 ml

[color=#17365d]the rate is 23 ml/hr

[color=#17365d]patient's weight is 79.5 kg

[color=#17365d]1st you have to find the amount of 1ml of dopamine

[color=#17365d]400 mg x mg

[color=#17365d]----------------

[color=#17365d]250ml x 1ml

[color=#17365d]x = 1.6

[color=#17365d]convert 1.6mg to mcg, so 1.6 x 1000 = 1600

[color=#17365d]now plug in the values to the formula

[color=#17365d]23 ml/hr x 1600 mcg/ml

[color=#17365d]-------------------------------

[color=#17365d]60 min/hr x 79.5 kg

[color=#17365d]36800/4770 = 7.71 mcg/kg/min

i hope it helps!!

jadu1106

p.s. i hate titration math.....:)

[CrystalClear75, BSN, RN]

Thanks Jadu:)

Does anyone know of any websites where I can practice titrating doses???