A child is prescribed 375 mg of an oral medicine. The bottle contains 125 mg in 5 mL. What volume should the nurse administer?
Correct answer: C. 15 mL
- A. 10 mL
- B. 12 mL
- C. 15 mL
- D. 20 mL
Explanation
First calculate the volume per milligram: 375 mg × 5 mL ÷ 125 mg = 15 mL. The prescribed dose is three times 125 mg, so three times 5 mL is required.
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About Drug Calculations and Dosage
Drug calculations apply measurement systems, unit conversions, dosage formulas, tablet and liquid doses, percentage and ratio strength, and weight based dosing. Work also includes calculating IV flow rates, infusion times and doses for children, while distinguishing the prescribed dose from the available concentration.
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