Order: Dobutamine 2 mcg/kg/min for a client who weighs 154 lb. Available: Dobutamine 250 mg in 250 ml DSW. Calculate the rate in ml/hr required to infuse 2 mcg/kg/min:

A. Step 1: Convert weight from pounds to kilograms 154 ÷ 2.2 = 70 kg Step 2: Calculate the dose in mcg/min 2 mcg/kg/min × 70 kg = 140 mcg/min Step 3: Convert mcg/min to mcg/hr 140 mcg/min × 60 min/hr = 8,400 mcg/hr Step 4: Convert mcg/hr to mg/hr 8,400 mcg ÷ 1,000 = 8.4 mg/hr Step 5: Determine the concentration of Dobutamine 250 mg in 250 mL → 1 mg/mL Step 6: Calculate the infusion rate in mL/hr 8.4 mg/hr ÷ 1 mg/mL = 8.4 mL/hr Answer: 8.4 mL/hr B. This is inaccurate, check rationale for choice A C. This is inaccurate, check rationale for choice A D. This is inaccurate, check rationale for choice A