An adult patient is about to receive intravenous (IV) ondansetron (Zofran) during a chemotherapy treatment. A dose of 0.15 mg/kg IV 30 minutes before chemotherapy is ordered. The patient weighs 140 pounds. The medication is supplied in a vial marked 2 mg/mL for IV administration. Identify how many milliliters the nurse will administer for this dose. (record answer to one decimal place) _______

Question

Quizplus · Accepted Answer

The Answer is 4.8 mL
Convert pounds to kilograms: 140 ÷ 2.2 = 63.6 kg.
Calculate milligrams per dose: 0.15 mg/kg × 63.6 kg = 9.54 = 9.5 mg/dose.
Calculate milliliters to be given:
2 mg:1 mL :: 9.5 mg:x mL.
(2 × x) = (1 × 9.5); 2x = 9.5; x = 4.75, which rounds to 4.8 mL.

An Adult Patient Is About to Receive Intravenous (IV) Ondansetron