Clinical research progress of acute coronary syndrome caused by non coronary heart disease

Most patients with acute coronary syndrome (ACS) are not associated with obstructive atherosclerotic coronary artery disease. There are five important causes of ACS caused without coronary atherosclerosis: spontaneous coronary dissection (SCAD), coronary embolism, coronary vasospasm (CAS), myocardial bridge (MB) and stress cardiomyopathy. In this paper, the pathogenesis, diagnosis and treatment strategy of each etiology were reviewed.