Anatomy - Occlusion in the Left Anterior Descending artery (LAD)

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Anterior myocardial infarction secondary to LAD occlusion is usually associated with ST elevation in the anterior leads. This type of myocardial infarction is called an anterior STEMI (ST-elevation myocardial infarction). The ischemia vector diagram can be used to determine the probable site of occlusion along the LAD (proximal, distal or mid-LAD). In some cases, it may be possible to determine if the occlusion occurs before the first diagonal branch or the first septal branch.


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