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The primary healthcare provider (PHCP) prescribes amoxicillin 80 mg/kg/day to be given in two divided doses. The infant weighs 19.2 lbs. The label of the medication reads 250 mg/mL of amoxicillin. How many mL of amoxicillin should the nurse administer for one dose?

Question

The primary healthcare provider (PHCP) prescribes amoxicillin 80 mg/kg/day to be given in two divided doses. The infant weighs 19.2 lbs. The label of the medication reads 250 mg/mL of amoxicillin. How many mL of amoxicillin should the nurse administer for one dose?

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Solution

Step 1: Convert the infant's weight from pounds to kilograms. Since 1 pound is approximately 0.453592 kg, the infant's weight in kg is 19.2 lbs * 0.453592 kg/lb = 8.618 kg.

Step 2: Calculate the total daily dose of amoxicillin. The PHCP prescribed 80 mg/kg/day, so the total daily dose is 80 mg/kg/day * 8.618 kg = 689.44 mg/day.

Step 3: Divide the total daily dose by the number of doses per day. The medication is to be given in two divided doses, so each dose should be 689.44 mg/day / 2 doses/day = 344.72 mg/dose.

Step 4: Calculate the volume of each dose. The label of the medication reads 250 mg/mL, so each dose should be 344.72 mg/dose / 250 mg/mL = 1.37888 mL/dose.

Therefore, the nurse should administer approximately 1.38 mL of amoxicillin for one dose.

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