WGU HESI Med Surg | Nurselytic

Questions 53

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WGU HESI Med Surg Questions

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Question 1 of 5

A child who weighs 66 pounds receives a prescription for amoxicillin 80 mg/kg/day by mouth in divided doses every 12 hours. The bottle is labeled, 'Amoxicillin for Oral Suspension, USP 400 mg per 5 mL.' How many mL should the nurse administer with each dose?(Enter numerical value only.)

Correct Answer: 15

Rationale:
To find the answer, we can use the following steps: Convert the child's weight from pounds to kilograms by dividing by 2.2. Calculate the total daily dose of amoxicillin in mg by multiplying the weight in kg by the dosage in mg/kg/day. Divide the total daily dose of amoxicillin in mg by the number of doses per day to get the dose per administration. Divide the dose per administration in mg by the concentration of amoxicillin in mg/mL. Round the result to the nearest whole number. Using these steps, we get: (weight in kg) = (66) / (2.2) = 30 kg. (total daily dose in mg) = (80) x (30) = 2400 mg. (dose per administration in mg) = (2400) / (2) = 1200 mg. (volume per administration in mL) = (1200) / (400 / 5) = 15 mL. (rounded volume per administration in mL) = 15 mL.
Therefore, the nurse should administer 15 mL of amoxicillin oral suspension with each dose.

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