Angina pectoris ECG can be found out

ECG can be detected when angina pectoris attacks, but it cannot be detected when it does not attack.

When angina pectoris attacks, myocardial ischemia and hypoxia, ECG examination can show ST segment elevation or depression greater than or equal to 0.1mV. When angina pectoris does not attack, even if coronary artery stenosis exists, the compensatory ability of the heart can basically maintain the blood supply of the heart. At this time, ECG examination generally does not find changes in myocardial ischemia, and usually cannot be detected.

ECG is one of the auxiliary examination methods. Patients can also combine medical history, clinical manifestations, coronary angiography, etc. to make a clear diagnosis.