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What is the cause of insufficient blood supply to the heart?
1, overwork and excessive myocardial blood consumption can cause relative myocardial ischemia.

2, insufficient blood volume, systemic ischemia, can cause myocardial ischemia.

3, the blood vessels supplying blood to the myocardium are not smooth, which can cause myocardial ischemia.

4. Excessive aggregation of red blood cells, blood viscosity and impurities can cause myocardial blood circulation ischemia.

5. According to different causes of myocardial ischemia, symptomatic treatment can eliminate the cause.