Myocardial infarction with non-obstructive coronary arteries as compared with myocardial infarction and obstructive coronary disease: outcomes in a Medicare population DreyerRachel TavellaRosanna P. CurtisJeptha PasupathySivabaskari KrumholzHarlan WangYongfei RumsfeldJohn S. MaddoxThomas M. SpertusJohn BeltrameJohn 2019 This study confirms an unfavourable prognosis in elderly patients with MINOCA undergoing coronary angiography, with one in five patients with MINOCA suffering a major adverse event over 12 months.