Identification of the potentially arrhythmogenic substrate in the acute phase of ST-segment elevation myocardial infarction.

Background: Predicting sudden cardiac death risk in the first months after ST-segment elevation myocardial infarction (STEMI) remains challenging.

Objective: The purpose of this study was to investigate the ability of late gadolinium enhancement cardiac magnetic resonance (LGE-CMR) to identify the potentially arrhythmogenic substrate and its temporal evolution after STEMI.

Methods: One hundred consecutive patients with a first STEMI were included.