Answer:
His daily dosage is 199.6 mg divided in four doses of 49.9 mg. The Nurse needs to draw 2.495 mL from a medicine that comes in 100mg/5mL.
Step-by-step explanation:
To calculate the daily dose we first need to find the mass of the Patient in kg. To do that we need to divide his weigh in lbs by 2.205.
[tex]weigh = \frac{22}{2.205} = 9.98 \text{ kg}[/tex]
Since he needs to take 20 mg of drug per kg of body in a day, we need to multiply his weigh by this dosage:
[tex]\text{daily dosage} = 9.98*20 = 199.6 \text{ mg}[/tex]
Each individual dose must be [tex]\frac{1}{4}[/tex] of his daily dose, so:
[tex]\text{each dose} = \frac{199.6}{4} = 49.9 \text{ mg}[/tex]
Since the medicine comes in 100mg /5 mL, the nurse needs:
[tex]\text{volume of dose} = \frac{49.9}{100}*5 = 2.495 \text{ mL}[/tex]