The pathophysiology of<unk>  is controversial. Until recently,<unk>  was assumed to be angina pectoris caused by disruption of an atherosclerotic plaque with partial thrombosis and possibly embolization or vasospasm leading to myocardial ischemia. However, sensitive troponin assays reveal rise of cardiac troponin in the bloodstream with episodes of even mild myocardial ischemia. Since<unk>  is assumed to occur in the setting of acute myocardial ischemia without troponin release, the concept of<unk>  is being questioned with some calling for retiring the term altogether.
Unstable angina
Variant angina
Microvascular angina
Torsades de pointes
Acute coronary syndrome
Palisade 
Angina
Angina 