Anterior Myocardial Infarction [Full | REVIEW]

An anterior myocardial infarction is a heart attack that results in the death of heart muscle tissue in the front wall of the left ventricle.

: Intense pressure, squeezing, or fullness in the center of the chest (Levine sign).

Most cases occur when an atherosclerotic plaque in the coronary artery ruptures, triggering a blood clot (thrombus) that blocks blood flow.

| Finding | Detail | |---------|--------| | | V2–V4 (classic); often extends to V1, V5, V6, I, aVL | | Reciprocal ST depression | II, III, aVF (inferior leads) | | Q waves | New Q waves in V2–V4 (develop hours to days) | | Poor R wave progression | In precordial leads | | Hyperacute T waves | Tall, symmetric T waves (earliest sign, before ST elevation) |

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The anterior wall of the heart is primarily supplied by the .

: It affects the anterior wall of the left ventricle and the interventricular septum, often leading to a significant drop in pumping efficiency (ejection fraction). 🩺 Clinical Diagnosis

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While some MIs can be "silent," particularly in diabetics or the elderly, most patients experience acute distress. National Institutes of Health (.gov) Myocardial Infarction - StatPearls - NCBI Bookshelf

Compared to heart attacks in other locations (like the inferior or lateral walls), an anterior myocardial infarction is generally considered more critical because:

Wellens’ Syndrome and Impending Anterior Wall Myocardial Infarction

: Used as an alternative if troponin assays are unavailable.