What is the cause of myocardial ischemia?

Myocardial ischemia is mostly caused by coronary artery stenosis, pneumonia, smoking, etc.

1. Coronary artery stenosis The

coronary artery mainly supplies blood to the myocardium. When the coronary artery is narrowed, blood cannot pass through normally, and the myocardium cannot obtain sufficient blood. It can cause myocardial ischemia.

2. Pneumonia

If the patient's lungs are infected by pathogens, the body becomes hypoxic, and heart cells cannot normally obtain oxygen, which can induce myocardial ischemia.

3. Smoking

If the patient smokes for a long time, the toxic substances in tobacco can continue to stimulate nerve excitement, increase blood circulation, and make blood vessels prone to spasm, which can increase the chance of myocardial ischemia.