Question

12. Dopamine 200 mg in 250 D5W at 12 mL/hr. The patient weighs 133 pounds. What is the mcg/kg/min that the patient is receiving?


a. 1.2 mcg/kg/min 
b. 2.1 mcg/kg/min
 c. 3.6 mcg/kg/min 
d. 2.7 mcg/kg/min
 Answer: _____


Answer 1

Answer is option d. 2.7 mcg/kg/min

Convert ml/hr to mcg/kg/min:-

Rate (ml/hour) x Amount in bottle (mcg) / [ Bottle volume (ml) x Body weight (kg) x 60]

Firstly we have to convert the given parameters into the result parameters.

Rate = 12ml/hour

Amount in bottle = 200mg = 200000mcg

Bottle volume = 250ml

Body weight = 133pounds = 60.3278kg

Now we can apply these parameters into the above cited equation.

12 x 200000 / 250 x 60.3278 x 60 = 2400000 / 904905 = 2.65 mcg/kg/min ≈ 2.7 mcg/kg/min