Click here for a full review of ST elevation myocardial infarction, below is a brief summary.
An ST elevation myocardial infarction, also known as STEMI, most commonly occurs when thrombus formation results in complete occlusion of a major epicardial coronary vessel, resulting in myocardial necrosis and cell death. The most serious form of acute coronary syndromes, STEMI is a life-threatening, time-sensitive emergency that must be diagnosed and treated promptly via coronary revascularization, usually by percutaneous coronary intervention (PCI).
A non-ST segment elevation myocardial infarction occurs when there is no ST segment elevation on the ECG; however, myocardial necrosis occurs once again from coronary artery occlusion.
In both scenarios, myocardial necrosis is confirmed by the measurement of cardiac biomarkers.