Elevated troponin in the coronary care unit: beyond acute myocardial infarction

Abstract

The study by Macín SM et al reflects the high frequency of abnormal troponin levels in a Latin American coronary care unit and confirms that these patients constitute a vulnerable population. Its greatest value may lie not in demonstrating once again the link between injury and mortality, but in highlighting the persistent challenges involved in classifying, interpreting, and managing this finding. Troponin is an excellent indicator of damage and a powerful prognostic marker, yet it is an incomplete substitute for clinical reasoning. The way forward is not to measure it less, but to interpret it better; an elevated troponin level signals cardiac compromise but does not necessarily explain the cause, nor does it dictate the appropriate course of action on its own.