Homework Answers
ANSWER.
* Calculation of ml/hr.
Formula
ml/hr = Total volume(ml) /Time(hr).
Calculation of volume.
Formula = Desired dose/Dose in hand * Quantity.
Here
Ordered dose = 6mcg/kg/min.
Weight of the patient = 150 lbs.
Convert lbs to kg for calculation
1 lbs = 0.45 kg.
So
Weight of the patient = 150 * 0.45
= 68 kg.
Desired dose (D) = 6 * 68
= 408 mcg/min.
Dose in hand (H) = 500 mg.
Convert mg to mcg for calculation
1mg = 1000 mcg
So
Dose in hand (H) = 500000 mcg (500mg)
Quantity(Q) = 500 ml (0.5 L)
As per above formula
Volume of drug required = D/H * Q
= 408/500000* 500
= 0.0008* 500
= 0.4 ml/min.
Convert ml/min to ml/hr by multiplying with 60.
ml/hr = 0.4 * 60
= 24 ml/hr.
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