A 17-year-old girl presents to the emergency department with excruciating retrosternal chest pain. She reports that the chest pain began abruptly less than two hours ago. There was no preceding trauma. Her past medical history is significant for bulimia nervosa but is otherwise unremarkable. She denies tobacco, alcohol, or drug use. Vital signs reveal tachycardia and hypotension.
Which of the following findings would be most likely in this patient?
- A) Chest wall crepitus on physical examination
- B) Elevated troponin
- C) Increased gastric acidity
- D) Pulmonary infiltrates on chest x-ray
- E) ST-segment elevations on electrocardiogram