Troponin is a very specific clinical examination, which is of great significance for the diagnosis of heart disease. Research shows that troponin elevation has a specificity of up to 99% in the diagnosis of cardiovascular diseases. Therefore, troponin elevation is generally cardiogenic and related to heart disease, which should be paid great attention. Generally, troponin begins to increase 3 to 4 hours after myocardial necrosis, and can persist in the blood for 7 to 10 days. The fourth edition of myocardial infarction released by the European Society of Cardiology in 2018 pointed out that troponin is a necessary condition for the diagnosis of acute myocardial infarction, and other secondary conditions include symptoms, changes in electrocardiogram, and imaging changes, including echocardiography, coronary angiography, etc. The clinical diagnosis of acute myocardial infarction can be made by positive troponin and any of the previous conditions. Of course, apart from myocardial infarction, troponin can also be used as some diagnostic criteria for myocardial injury and myocarditis, which can also be seen clinically in other diseases, such as acute cerebrovascular accident, septic shock, renal failure and uremia, aortic dissection, pulmonary embolism, etc., which can be seen in troponin elevation. Therefore, if troponin is elevated clinically, it is necessary to consult a cardiologist specifically to determine the specific reason.
