The pattern is consistent with the textbook description of early repolarization: concave ST elevation, often in precordial leads, with relatively large T waves and sometimes subtle J-point notching. ROSEN’s Emergency Medicine, p. 1008. Some degree of precordial ST elevation is very common in young men and can be a normal finding. ROSEN’s Emergency Medicine, p. 1000. The ECG pattern reference describes similar features.

Important limitation: a phone photograph is not adequate for a definitive ECG report, and the chest-lead morphology, especially the tall T waves, should be reviewed on the original tracing by a clinician. If this is a screening ECG and he remains entirely well, a formal ECG interpretation or comparison with a previous ECG is reasonable, rather than an emergency evaluation.

Seek urgent assessment now if there is chest pain, fainting/near-fainting, palpitations, shortness of breath, fever, family history of unexplained sudden death, or if the ECG was taken during an acute illness. In that setting, repeat ECG and electrolytes, particularly potassium, may be appropriate.