Anterolateral Infarct Age Undetermined _top_ File

The electrocardiogram (ECG) remains the cornerstone of initial cardiac evaluation. One of the most common yet clinically vexing interpretations is the finding of an "anterolateral infarct of undetermined age." This reading suggests prior myocardial injury in the territory supplied by the left anterior descending (LAD) artery and/or left circumflex (LCx) artery, but lacks the specific criteria to timestamp the event. This paper explores the pathophysiological basis of these ECG findings, the differential diagnosis that mimics infarction, the clinical significance of indeterminate age, and the current guidelines for diagnostic follow-up. Understanding the distinction between acute ischemia, old infarction, and non-ischemic mimics is critical to prevent mismanagement, including the catastrophic oversight of an acute coronary syndrome or the unnecessary utilization of healthcare resources.

The anterolateral wall of the left ventricle is typically perfused by the Left Anterior Descending (LAD) artery and the Left Circumflex (LCx) artery. Leads V1 through V4 primarily reflect the anterior wall (LAD territory), while leads V5, V6, and aVL reflect the lateral wall (LCx or distal LAD territory). anterolateral infarct age undetermined

An anterolateral infarct is usually caused by a blockage in the , often referred to as the "widowmaker" because it supplies a large portion of the heart muscle. An anterolateral infarct is usually caused by a