Slow coronary flow in patients undergoing urgent coronary angiography for ST elevation myocardial infarction

Abstract

The slow coronary flow (SCF), also known as syndrome Y, has been described since 1972 [1]. Slow coronary flow phenomenon is characterized by delayed opacification of epicardial coronary vessels in the absence of stenosis and/or conditions such as coronary ectasia, coronary spasm, valvular and myocardial heart disease [2–4]. However, previous studies showed SCF may cause unstable angina and non-ST elevation myocardial infarction (non-STEMI), association between SCF and STEMI have not evaluated adequately yet [3–8].