IntroductionAcute myocardial infarction (AMI) is very common in clinic, and is often caused by incomplete coronary occlusion or complete occlusion induced by acute plaque rupture (1). Coronary angiography plays an important role in the etiology diagnosis and treatment of AMI (2). In previous studies, 1-12% of patients with AMI who underwent coronary angiography did not develop an irregular lumen, or coronary artery stenosis of <50% (3,4). In this type of AMI, causes of infarct-related artery occlusion vary from person to person, such as increased platelet or coagulation activity (hypercoagulability) (5-7), coronary artery spasm (8), coronary artery embolism (9,10), as well as coronary myocardial bridge, coronary artery ectasia and coronary artery dissection (11). AMI caused by coronary artery embolism is rare in clinical practice. This study conducts an analysis of the clinical characteristics of these patients.
MethodsFrom 2005 to 2015, five patients with AMI caused by coronary artery embolism were admitted to our hospital, and underwent primary percutaneous coronary intervention Original Article