An is primarily identified on an ECG by ST-segment elevation in the precordial leads, typically V1 through V4 . These changes usually result from an occlusion in the left anterior descending (LAD) artery . 1. Identify the Primary Precordial Leads
The hallmark of an acute anterior STEMI (ST-Elevation Myocardial Infarction) is ST-segment elevation in the precordial leads. anterior infarct on ecg