Question 1

How do you convert mcg/kg/min to mL/hr?

Accepted Answer

Use the formula: mL/hr = (mcg/kg/min x weight in kg x 60) / (concentration in mcg/mL). For example, dopamine at 5 mcg/kg/min for a 70 kg patient with 400 mg in 250 mL (1600 mcg/mL): (5 x 70 x 60) / 1600 = 13.1 mL/hr.

Question 2

What is a normal dopamine drip rate?

Accepted Answer

Dopamine dosing ranges by effect: 1-5 mcg/kg/min (renal/low dose), 5-10 mcg/kg/min (cardiac/moderate dose producing beta-1 effects), and 10-20 mcg/kg/min (vasopressor/high dose producing alpha effects). The ordered rate depends on the clinical indication.

Question 3

What drips are dosed in mcg/kg/min?

Accepted Answer

Common critical care drips dosed in mcg/kg/min include dopamine, dobutamine, milrinone, nitroprusside, and some norepinephrine protocols. Other vasopressors like phenylephrine and vasopressin use different dosing units (mcg/min or units/min).

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