Unstable<unk>  (UA), also called crescendo<unk> , is a type of<unk>  pectoris that is irregular. It is also classified as a type of acute coronary syndrome (ACS). It can be difficult to distinguish unstable<unk>  from non-ST elevation (non-Q wave) myocardial infarction (NSTEMI). They differ primarily in whether the ischemia is severe enough to cause sufficient damage to the heart's muscular cells to release detectable quantities of a marker of injury (typically troponin T or troponin I). Unstable<unk>  is considered to be present in patients with ischemic symptoms suggestive of an ACS and no elevation in troponin, with or without ECG changes indicative of ischemia (e.g., ST segment depression or transient elevation or new T wave inversion). Since an elevation in troponin may not be detectable for up to 12 hours after presentation, UA and NSTEMI are frequently indistinguishable at initial evaluation.
complications of Angina
complications of Myocardial infarction
medical cause of Myocardial infarction
medical cause of Chest pain
complications of Arrhythmia
complications of Ventricular tachycardia
symptom of Myocardial infarction
complications of Coronary thrombosis