Final answer:
The child's weight in kilograms is 19.1 kg. The safe recommended daily dosage ranges from 382 to 764 mg. The ordered dose is 600 mg/day, which is safe, and the child should receive 8 mL of Ceclor per dose.
Step-by-step explanation:
Calculating Safe Dosage of Cefaclor
To calculate a child's weight in kilograms, divide the weight in pounds by 2.2. The child weighs 42 lb, which is approximately 19.1 kg (42 lb ÷ 2.2 = 19.1 kg).
The safe recommended daily dosage is 20 to 40 mg/kg/day. For our 19.1 kg child, the daily dosage range would be 382 to 764 mg (19.1 kg x 20 mg/kg = 382 mg and 19.1 kg x 40 mg/kg = 764 mg).
The ordered dose for the child is 200 mg every 8 hours, which equates to 600 mg per day (200 mg x 3 = 600 mg).
To determine if the dosage is safe, compare the ordered dosage with the safe recommended daily dosage. The child's ordered dose is within the safe range: 600 mg falls between 382 and 764 mg.
If the dose is safe, to calculate the amount of Ceclor in milliliters needed for a 200 mg dose, use the concentration of the available medication: 125 mg per 5 mL. This can be calculated as (200 mg ÷ 125 mg) x 5 mL = 8 mL.
In summary, the ordered dose is safe, and the child should receive 8 mL per dose to administer the correct amount of medication.