A nurse is preparing to administer ondansetron 0.15 mg/kg IV to a client who weighs 132 lb. Available is ondansetron 2 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.) ________ mL

Step 1 is to convert the client's weight from pounds (lb) to kilograms (kg) Conversion factor: 1 kg = 2.2 lbs Weight in kg = 132 ÷ 2.2 132 ÷ 2.2 = 60 kg Step 2 is to calculate the total dose in milligrams (mg) Total mg Dose = Weight in kg × Dosage (mg/kg) Total mg Dose = 60 × 0.15 60 × 0.15 = 9 mg Step 3 is to calculate the volume to administer in milliliters (mL) Volume = (Ordered Dose ÷ Available Dose) × Available Volume Volume = (9 ÷ 2) × 1 9 ÷ 2 = 4.5 4.5 × 1 = 4.5 Step 4 is to round to the nearest tenth 4.5 = 4.5 Answer: 4.5 mL