Discussion

Help with dosage calculation

Oct 20, 200718 yr

I was wondering if someone could help me figure out this problem, I do dimensional analysis so please show me how to work this, please???

Thank you

Dopamine (Intropin) is infusing at 15mL/hr. The bag has 200mg/250mL D5W. The client weighs 145lbs. How many mcg/kg/min is the client receiving?

Oct 21, 200718 yr

Okay let's give this a try, first get kg from lbs 145/2.2=65.91kg

15ml X 1hr X 200mg X 1000mcg 3000000

1hr... 60min ..250ml...... 1mg.. = 15000 =200mcg/min

After you cancel your labels top and bottom you get mcg/min then divide by kg;

200/65.91= 3.03 mcg/kg/ml

I think that gets it...anyone else see a better way or a screw-up?

Oct 21, 200718 yr

I came up with the same answer... 3.03 mcg/kg/min

mcg = 1000 mcg x 200 mg x 15 ml x hr x

kg/min 1 mg........ 250 ml....... hr ....60 min....65.91kg

The 65.01kg belongs w/ the bottom numbers....That's where I used to always mess up.

Oct 21, 200718 yr

Thank you so much!!

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