Total occlusion of the left main coronary artery presenting as ST-elevation myocardial infarction

An ECG pattern of widespread ST depression in six or more precordial and inferior leads, accompanied by ST-segment elevation in the aVR and/or V1 leads, is typical of the non-ST-segment elevation myocardial infarction (NSTEMI) pattern associated left main (LM) artery occlusion, but this ECG pattern is really associated with a subocclusion of the LM, or in the case that the LM was occluded with the presence of collateral circulation. There are few reports of ST-elevation myocardial infarction (STEMI) due to acute total LM occlusion.
Source: Journal of Electrocardiology - Category: Cardiology Authors: Source Type: research