Order: Nitroglycerin IV to infuse at 90 mcg/min. It is available as Nitroglycerin 150 mg in 300 mL D5W. What is the infusion rate in mL/hr? Round to the nearest tenths place where applicable and enter numeric value only (no commas or labels) ________ mL/hr

Step 1 is to convert the total milligrams in the bag to micrograms mcg = mg × 1000 150 × 1000 = 150,000 mcg Step 2 is to calculate the concentration of the solution in mcg/mL mcg per mL = Total mcg ÷ Total mL 150,000 ÷ 300 = 500 mcg/mL Step 3 is to calculate the micrograms delivered per hour mcg per hour = mcg/min × 60 minutes 90 × 60 = 5400 mcg/hr Step 4 is to calculate the flow rate in mL per hour mL/hr = mcg/hr ÷ mcg/mL 5400 ÷ 500 = 10.8 mL/hr Step 5 is to round to the nearest tenth 10.8 = 10.8 Answer: 10.8