Wellens' Sign: LAD-T Wave Inversion 

Life threatening T wave inversions in precordial leads. Often V2-V3 

Specific for critical stenosis of proximal LAD. 

High rate in <1 week of becoming acute anterior wall MI — 'widow maker' lesion 

Typically with history of angina; but T wave changes often occur during a period without chest pain, as they result from myocardial reperfusion. Serial EKGS in pts are crucial. 



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