The first step to rule out whether the patient has had an acute myocardial infarction is to combine the patient’s actual clinical symptoms, such as whether the patient currently has significant chest tightness or chest pain, and whether there is a dynamic evolution of the patient’s electrocardiogram, all of which are within its reference range. If the patient currently has a simple troponin T elevation, no dynamic evolution of the ECG, and no significant chest tightness or chest pain, then it cannot be ruled out that the patient may have a hypersensitive troponin T elevation due to heart failure. Such patients are often associated with dyspnea, wheezing, and shortness of breath, and it is recommended that the patient may be further rechecked with cardiac ultrasound and BNP to help clarify the diagnosis. In addition, patients with severe lung infections or malignant tumors may have elevated troponin T. Therefore, the exact cause of elevated troponin T must be considered in the context of the actual situation.