Question

Patient weighs 22 lbs. Physician order 20 mg/kg/day in 4 divided doses. What is the daily drug total? ________ How much will the nurse draw up for each dose if the medicine comes (100mg/5mL)? ______________

Answer 1

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.

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.

`weigh = (22)/(2.205) = 9.98 \text{ kg}`

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:

`\text{daily dosage} = 9.98*20 = 199.6 \text{ mg}`

Each individual dose must be
`(1)/(4)` of his daily dose, so:

`\text{each dose} = (199.6)/(4) = 49.9 \text{ mg}`

Since the medicine comes in 100mg /5 mL, the nurse needs:

`\text{volume of dose} = (49.9)/(100)*5 = 2.495 \text{ mL}`