A 55-year-old man with alcoholic cirrhosis of the liver presents 30 minutes after vomiting up bright red blood. This is his first such episode. An endoscopy one year ago revealed two grade IV esophageal varices, which were ligated. He was then started on oral propranolol. His medical and surgical histories are unremarkable otherwise. He is not on any other medications. He has no known allergies. He still continues to consume four to five units of alcohol per day.