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A nurse is caring for a 1-month-old infant who weighs 3500 g and is prescribed a dose of cephazolin 50 mg/kg by intermittent IV bolus three times daily. How many mg should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero)
Answer and Explanation

The Correct Answer is ["175"]

We are asked to calculate the dosage of cephazolin for a 1-month-old infant based on their weight.

Steps to solve: 1. Identify the given values:

  • Dose per kg = 50 mg/kg
  • Weight of the infant = 3500 g

2. Set up the formula: Dosage (mg) = Dose per kg (mg/kg) × Weight (kg)

3. Since the weight is given in grams, convert it to kilograms: 3500 g / 1000 g/kg = 3.5 kg

4. Substitute the known values into the formula and calculate: Dosage (mg) = 50 mg/kg × 3.5 kg Dosage (mg) = 175 mg

5. Round the answer to the nearest tenth: Dosage (mg) = 175.0 mg

The nurse should administer 175.0 mg of cephazolin per dose.


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Explanation

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