A？young man with exertional chest discomfort

Out-of-hospital electrocardiogram (ECG) shows a sinus rhythm of 85 beats per minute (bpm), narrow QRS complex, and ST-segment elevations in leads V1–V4 (coved morphology in V1–V2), with a terminal negative T wave in V1–V2 (Fig. 1). ECG findings could be suspicious for acute anteroseptal myocardial infarction, but reciprocal ST-segment changes are lacking. The ECG is also suggestive of a coved-type Brugada-like pattern, and the patient had no history of syncope or any other cardiac symptom, nor a family history of unexplained sudden cardiac death