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!