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12 Lead Contiguous Leads - Anterior Wall MI

12 Lead Contiguous Leads - Anterior Wall MI

12 Lead to Anteater with MI

Picmonic

On the 12 contiguous leads of an ECG, an anterior wall myocardial infarction can affect multiple leads. It shows maximal ST-segment elevation at the anterior leads, V3 and V4. Anterior wall myocardial infarctions result from occlusion of the left anterior descending artery (LAD), which is also known as the "widow maker."

3 KEY FACTS

Lead V3 is an anterior lead, and shows pathologic Q waves and ST-segment changes with anterior wall infarcts.

V4 is an anterior lead, which shows pathologic Q waves and ST-segment elevation in cases of anterior wall MI.

The left anterior descending artery (LAD), or the widow maker, provides descending blood supply to large areas of the heart. This means that if these arteries get abruptly and completely occluded it will cause a massive heart attack that will likely lead to a sudden death.

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