Abstract
There is a paucity of data regarding the prevalence, clinical characteristics, and outcomes of patients presenting with ST elevation myocardial infarction (STEMI) due to left main (LM) culprit vessel. LM culprit STEMI (LMCSTEMI) is an uncommon, but frequently catastrophic event. Prior meta-analyses and registries have described a varying prevalence of LMCSTEMI, associated cardiogenic shock, and in-hospital mortality among those surviving to hospital presentation. These observed clinical discrepancies may be partially attributable to diverse clinical and angiographical subsets among this STEMI population. STEMI due to LM culprit artery disease represents a clinically high-risk subset of patients with substantial in-hospital mortality. In this paper, we summarize the available clinical data pertaining to STEMI with LM culprit, discuss unique ECG characteristics, and discuss contemporary revascularization therapy. We also report the preliminary findings from a contemporary, STEMI database describing clinical characteristics and angiographically defined subsets of LM culprit STEMI.
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