An adult weighs 68 kg and is prescribed a medicine at 0.15 mg/kg per dose. The injection contains 10 mg/mL. What volume should the nurse administer?
Correct answer: B. 1.02 mL
- A. 0.68 mL
- B. 1.02 mL
- C. 1.5 mL
- D. 10.2 mL
Explanation
The prescribed dose is 0.15 × 68 = 10.2 mg. At 10 mg/mL, the volume is 10.2 ÷ 10 = 1.02 mL. The 10.2 mg dose is the amount of drug, not the volume to draw up.
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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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