Will the change of ECG S wave be improved? Is it myocardial ischemia?

The changes of st segment and T wave in ECG are not necessarily due to insufficient blood supply to myocardium. Myocarditis, cardiomyopathy. Electrolyte disorder. All drug effects can change st segment and T wave. When the autonomic nervous system is dysfunctional, it sometimes changes. In this case, it is best to go to the hospital cardiology department to see. The doctor actually saw it, combined with the clinic. Make a correct diagnosis.