A child weighs 18 kg and has an order for Zithromax 10 mg/kg po stat. The recommended dosage is 10 mg/kg/day. The oral suspension is dispensed as 200 mg in 5 mL. How many milliliters should the nurse administer in one dose? Use the proportion (ratios) method to calculate the amount to give.
A) 4.3
B) 4.4
C) 4.5
D) 4.6

Question

Quizplus · Accepted Answer

The recommended dosage is 10 mg/kg/day. A child who weighs 18 kg would have a maximum daily dose of 180 mg (18 kg * 10 mg/kg). The physician ordered 180 mg (10 mg/kg) stat. The medicine is available as 200 mg/5 mL. Use proportion (ratios): 200 mg : 5 mL :: 180 mg : x mL; 200x = 900/200 = 4.5 mL.

A Child Weighs 18 Kg and Has an Order for Zithromax