Cardiac enzymes ― also known as cardiac biomarkers ― include myoglobin, troponin and creatine kinase. Historically, lactate dehydrogenase, or LDH, was also used but is non-specific. Cardiac ...

A 56 year-old man presented with chest pain and shortness of breath. EKG and cardiac enzymes were consistent with an acute myocardial infarction. Four hours later, he abruptly went into a coma.