Typical chest pain and an ominous ECG

Clinical introduction A middle-aged man in his 50s presented to our emergency department with retrosternal chest discomfort of 2-hour duration. His cardiovascular risk factors included smoking and hypertension. The patient had no history of similar episodes. On examination, his heart rate was 72 beats per minute, and his blood pressure was 114/74 mm Hg. The rest of the physical examination was unremarkable...