Acute Coronary Syndrome - StatPearls - NCBI Bookshelf
www.ncbi.nlm.nih.gov › books › NBK459157Jul 19, 2021 · Acute coronary syndrome (ACS) refers to a group of conditions that include ST-elevation myocardial infarction (STEMI), non-ST elevation myocardial infarction (NSTEMI), and unstable angina. It is a type of coronary heart disease (CHD), which is responsible for one-third of total deaths in people older than 35. Some forms of CHD can be asymptomatic, but ACS is always symptomatic.[1][2][3]