Acute coronary syndrome (ACS) is a group of cardiac diagnoses along a spectrum of severity due to the interruption of coronary blood flow to the myocardium, which in decreasing severity are:
- ST elevation myocardial infarction (STEMI)
- non-ST elevation myocardial infarction (NSTEMI)
- unstable angina
Stable angina is not considered an ACS.
Of all patients who present to emergency departments with symptoms of ACS, only 20-25% will have ACS confirmed as their discharge diagnosis 1,2.
- aortic or coronary artery dissection
- connective tissue diseases
- drugs: cocaine
- coronary artery spasm
- Kounis syndrome: allergic / hypersensivity precipitant
- 1. Halpern EJ. Triple-rule-out CT angiography for evaluation of acute chest pain and possible acute coronary syndrome. Radiology. 2009;252 (2): 332-45. doi:10.1148/radiol.2522082335 - Pubmed citation
- 2. Roobottom C, Mitchell G, Iyengar S. The role of non-invasive imaging in patients with suspected acute coronary syndrome. Br J Radiol. 2011;84 Spec No 3 (special_issue_3): S269-79. doi:10.1259/bjr/57084479 - Free text at pubmed - Pubmed citation