There are many causes of T-wave hypoplasia, and not all T-wave hypoplasia is clinically significant; some may be nonspecific. If you want to see whether the low T wave is clinically significant, it depends on the R wave dominant leads. In R wave dominant leads, the T wave is less than 1/10 of the R wave in the same lead, which is called T wave hypotension, such as coronary artery disease, hypertension, cardiomyopathy, hypokalemia may cause T wave hypotension. If hypokalemia is the cause of T-wave hypoplasia, it is recommended that the patient take oral potassium chloride extended-release tablets or potassium citrate to help improve the hypokalemia. If it is caused by myocardial ischemia, it is necessary to improve the circulation treatment. It is possible that the symptoms of myocardial ischemia will be improved and the T-wave hypotension will also be improved.