A nurse is preparing to administer fentanyl 0.5 mcg/kg via IV bolus to a client who weighs 187 lb. Available is fentanyl 50 mcg/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 = 187 ÷ 2.2 ≈ 85 kg Calculate the ordered dose in mcg Ordered Dose = 0.5 × 85 Ordered Dose = 42.5 mcg Identify the available concentration Available Concentration: 50 mcg/mL Calculate the volume to administer Volume to administer = Ordered Dose ÷ Concentration Volume to administer = 42.5 ÷ 50 Volume to administer = 0.85 mL Round to the nearest tenth = 0.9 mL