The main causes of high-sensitivity troponin T are myocarditis, acute myocardial infarction and heart failure. If a patient has an elevated high-sensitivity troponin T along with dynamic evolution of the electrocardiogram or precordial pain, the condition is considered to be due to acute myocardial infarction. If the patient has a history of cold, fever, or diarrhea within the last 3 weeks, along with ECG changes, and is young, consider the patient to have possible myocarditis. If the patient has dyspnea, shortness of breath, or wheezing as the main complaints, along with an abnormal elevation of BNP, then a high Troponin T is considered to be due to heart failure, for example, elevated Troponin T in heart failure means that the patient often has a poor prognosis.