Questions: A child's amoxicillin dose is 20 mg / kg / day in divided doses, every 8 hours. How many milligrams (MG) of amoxicillin would a 44 lb child receive daily? 400 mg 1000 mg 200 mg 1200 mg

Solution Steps

To calculate the dosage, we first need to convert the child's weight from pounds to kilograms. The conversion factor is \(1 \, \text{kg} = 2.20462 \, \text{lb}\).

\[ \text{Weight in kg} = \frac{44 \, \text{lb}}{2.20462 \, \text{lb/kg}} \approx 19.9583 \, \text{kg} \]

The prescribed dosage is \(20 \, \text{mg} / \text{kg} / \text{day}\). Therefore, the total daily dosage for the child is:

\[ \text{Total daily dosage} = 20 \, \text{mg/kg/day} \times 19.9583 \, \text{kg} \approx 399.166 \, \text{mg/day} \]

Since the dosage is typically rounded to the nearest whole number for practical purposes, we round \(399.166 \, \text{mg/day}\) to the nearest whole number:

\[ \text{Rounded total daily dosage} = 400 \, \text{mg/day} \]

Final Answer