HESI RN Dosage Calculation Proctored Exam
Calculation
A child who weighs 44 pounds with otitis media receives a prescription for azithromycin 10 mg/kg once, then 10 mg/kg daily for 4 days. The medication is available in a solution containing 200 mg/5 mL. How many mL should the nurse administer on the first day of the treatment regimen? (Enter numeric value only.)
mL
Explanation & Rationale
Step 1: Convert weight from pounds to kilograms. 44 pounds ÷ 2.2 = 20 kg Step 2: Calculate the dosage. 10 mg/kg × 20 kg = 200 mg Step 3: Identify the concentration. 200 mg/5 mL = 40 mg/mL Step 4: Calculate the volume to administer. 200 ÷ 40 = 5 mL
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