Difficulty: Medium
Average Score: 95%
Simulated
Passage / Scenario
A nurse is preparing to administer a dexamethasone 1.5 mg/kg/day PO to divide equally every 6 hr to a preschool-age child who weighs 22 lb. Available is dexamethasone oral solution 1 mg/mL.How many mL should the nurse administer per dose?
Correct answer
3.8
Rationale
The correct answer is 3.8 mL. This is determined by the prescribed dosage. To calculate this, you divide the total amount by the concentration. In this case, if the total amount prescribed is 15 mL, and the concentration is 4mg/mL, you divide 15 by 4 to get 3.75 mL. Rounding up to the nearest measurable increment, the nurse should administer 3.8 mL. Other choices are incorrect because they do not align with the prescribed dosage calculation.