400mg / 250 = x mg/1 ml
250 x = 400
x = 1.6
Concentration is 1.6 mg/ml
Convert mg to mcg
1.6 (mg) X 1000 (mcg per 1mg) = 1600 mcg /ml
(ml/hr) 12 X 1600 / (time) 60 min/hr X 78 (weight in kgs) = 19200 / 4680
X = 4.1 mcg/kg/min
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ICQ 115433750
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