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1. Definition & Anatomy An anterior myocardial infarction (MI) refers to necrosis of the anterior wall of the left ventricle due to acute occlusion of the left anterior descending (LAD) artery . It is often called the " widow-maker " infarction due to its high mortality and extensive myocardial damage.
| 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) |
1. Definition & Anatomy An anterior myocardial infarction (MI) refers to necrosis of the anterior wall of the left ventricle due to acute occlusion of the left anterior descending (LAD) artery . It is often called the " widow-maker " infarction due to its high mortality and extensive myocardial damage.
| 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) | anterior myocardial infarction
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