The nurse prepares to administer a dopamine infusion at 4 mcg/kg/min for a client weighing 165 pounds. The nurse has a dopamine solution with a concentration of 400 mg in 250 mL of 5% dextrose. The nurse should set the IV pump to how many millimeters per hour? Round to the nearest tenth.

Step 1: Convert weight from pounds to kilograms Weight (kg) = 165 ÷ 2.2 Weight = 75 kg Step 2: Calculate the ordered dose in mcg/min Dose (mcg/min) = 4 mcg/kg/min × 75 kg Dose = 300 mcg/min Step 3: Convert mcg/min to mg/hr 300 mcg/min × 60 min/hr = 18,000 mcg/hr 18,000 mcg/hr ÷ 1,000 mcg/mg = 18 mg/hr Step 4: Determine concentration of IV solution 400 mg in 250 mL Concentration = 400 ÷ 250 = 1.6 mg/mL Step 5: Calculate mL/hr mL/hr = 18 mg/hr ÷ 1.6 mg/mL mL/hr = 11.25 mL/hr Step 6: Round to the nearest tenth 11.25 = 11.3 mL/hr Final Answer: 11.3 mL/hr