Non-ST-segment-elevation acute coronary syndromes (NSTE ACS) encompass a wide spectrum of clinical conditions characterised by acute ischemic symptoms, electrocardiographic signs of myocardial ischemia (which may or may not be evident), and elevation of the biochemical markers of myocardial injury: when troponin values are within normal range, the case will be defined as unstable angina, if this clinical entity has not been declared deceased after the introduction of high-sensitivity troponin measurements [1].
