A nurse is preparing to administer morphine 0.1 mg/kg IM to a client who weighs 99 lb. Available is morphine 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.)

Calculation: Convert the client’s weight from pounds to kilograms Weight = 99 ÷ 2.2 ≈ 45 kg Calculate the ordered dose in mg Ordered Dose = 0.1 × 45 Ordered Dose = 4.5 mg Identify the available concentration Available Concentration: 2 mg/mL Calculate the volume to administer Volume to administer = Ordered Dose ÷ Concentration Volume to administer = 4.5 ÷ 2 Volume to administer = 2.25 mL Round to the nearest tenth = 2.3 mL