The patient is receiving nitroglycerin 55 mcg/min. Available: Nitroglycerin in 5% Dextrose Injection 25 mg per 250 mL (100 mcg/mL) What is the flow rate?

Convert the dosage to mcg per hour: 55 mcg/min × 60 min = 3300 mcg/hr Determine the concentration of nitroglycerin available: The concentration is 25 mg per 250 mL, which converts to 100 mcg/mL. Calculate the flow rate in mL per hour using the dosage and concentration: Flow rate (mL/hr)=(Dose (mcg/hr)/Concentration (mcg/mL)) (3300 mcg/hr100 mcg/mL)=33 mL/hr