Review Question - QID 108753

A 61-year-old woman presents to the emergency department with a 1-hour history of bloody vomiting. She had been vomiting for several hours prior to the episode of hematemesis. She felt a sudden onset of chest and epigastric pain when she noted blood in her vomit. In the emergency room, she endorses feeling lightheaded but denies coughing or difficulty breathing. The pain does not change with swallowing. She has been bruising more easily than usual over the last 3 months. The patient has a long history of alcohol use disorder with recent progression of liver disease to cirrhosis. She has known esophageal varices and is on propranolol. Her temperature is 98.2°F (36.8°C), blood pressure is 94/60 mmHg, pulse is 103/min, and respirations are 16/min. On exam, she is in moderate distress and there is frank blood in her emesis basin. Cardiovascular and lung exams are unremarkable, and there is pain on palpation of her epigastrium and chest without crepitus. Initial labs are shown below:

Hemoglobin: 13.1 g/dL
Leukocyte count: 6,200/mm^3
Platelet count: 220,000/mm^3
Creatinine: 0.9 mg/dL

The patient is started on IV isotonic saline, pantoprazole, ceftriaxone, and octreotide. A CT scan of the chest, abdomen, and pelvis with contrast shows no acute findings. Which of the following is the most appropriate next step in management?