Coronary microvascular dysfunction in patients with acute coronary syndrome and no obstructive coronary artery disease

Between 10 and 15% of patients admitted for non-ST-segment elevation acute coronary syndrome (NSTE-ACS) show no obstructive coronary artery disease (NO-CAD) at angiography. Coronary microvascular spasm is a possible mechanism of the syndrome, but there are scarce data about coronary microvascular function in these patients. To assess coronary microvascular function in patients with NSTE-ACS and NO-CAD. We studied 30 patients (67 ± 10 years, 19...