Glycerol trinitrate (organic nitrate)

You administer GTN as you remember that this drug is a venodilator, which may reduce left ventricular end diastolic pressure in acute heart failure. Dr. Taylor agrees with you that a nitrate may be a useful drug for Mrs. Reed, especially considering the high blood pressure, but surely not before administering a drug, to address the excessive congestion, which is causing Mrs. Reed such difficulty in breathing. 

Please go back and re-consider.