Difficulty: Medium
Average Score: 71%
Simulated
A child who weighs 55 pounds receives a prescription for isoniazid 10 mg/kg/day by mouth (PO) once a day. The bottle is labeled, 'Isoniazid Oral Solution, USP 50 mg per 5 mL.'. How many mL should the nurse administer?
Correct answer
25
Rationale
Weight is 55 lbs ├â┬À 2.2 = 25 kg. Dosage is 10 mg/kg/day * 25 kg = 250 mg/day. Solution is 50 mg/5 mL, so 250 mg ├â┬À 50 mg * 5 mL = 25 mL.