Non-ST-segment elevation myocardial infarction is a form of acute coronary syndrome, characterized by elevation of cardiac enzymes in the blood and the absence of ST-segment elevation on the electrocardiogram. If non-ST elevation myocardial infarction is not detected and treated promptly, it will lead to dangerous complications for the patient. Let's find out what non-st-elevation myocardial infarction is in the article below.