What causes sudden myocardial ischemia

Hello, the human heart muscle is supplied by the coronary arteries. Myocardial ischemia refers to a pathological state in which the blood perfusion of the heart is reduced, resulting in a decrease in oxygen supply to the heart, abnormal myocardial energy metabolism, and inability to support the normal work of the heart. The blood supply to the heart is not static, but there are always fluctuations, but these fluctuations are regulated by the body itself, so that the supply and demand of blood are relatively constant, and the heart works properly.

If any one of the causes causes myocardial ischemia, the body's regulation cannot meet the needs of the heart, which constitutes myocardial ischemia in the true sense.

Why does the heart have ischemia? Decreased blood pressure, decreased blood supply to the aorta, and blocked coronary arteries can directly lead to a decrease in blood supply to the heart; Valvular heart disease, changes in blood viscosity, and lesions of the heart muscle itself can also reduce the blood supply to the heart. There is also a condition in which the blood supply to the heart is not reduced, but the oxygen requirement of the heart increases, which is a type of relative myocardial ischemia.

Clinical results show that the main and most common cause of myocardial ischemia is coronary artery stenosis. And the main cause of coronary artery stenosis is atherosclerosis.

Heart disease caused by coronary atherosclerosis is often referred to as coronary heart disease. Therefore, coronary heart disease is the "main culprit" of myocardial ischemia.

There are many types of myocardial ischemia, and the most common ones are the following:

1. Chronic diseases, such as cerebrovascular diseases such as hypertension and hyperlipidemia, and atherosclerosis in the elderly will lead to myocardial ischemia.

2. Physical and chemical factors can easily lead to myocardial ischemia in a bad environment for a long time, which is more common in young people.

3. Viral infections, especially myocarditis caused by Epstein-Barr virus infection, can also lead to myocardial ischemia.

4. In patients with diabetes, the slowdown of metabolism in the body will be combined with atherosclerosis, resulting in myocardial ischemia. Myocardial ischemia is affected by many predisposing factors, such as cold weather, emotional agitation, staying up late, obesity, etc., myocardial ischemia occurs in the case of predisposing factors, the onset of myocardial ischemia is more acute, the condition is more serious, people with a history of myocardial ischemia should avoid inducing, active primary disease, can prevent the further development of myocardial ischemia, and regular physical examination is usually required.

The most common cause of myocardial ischemia is coronary atherosclerosis, followed by inflammation (rheumatism, syphilis, Kawasaki disease, and vasoangiitis obliterans, etc.), spasticity, embolism, connective tissue diseases, trauma, and congenital malformations. Epidemiological studies have found that important risk factors associated with atherosclerosis are hyperlipidemia, hypertension, diabetes, smoking, obesity, increased homocysteine, low physical activity, advanced age, and male sex.

Myocardial ischemia usually occurs after the age of 40 years, and the average prevalence is about . With the improvement of people's living standards, the prevalence of myocardial ischemia in China is increasing year by year. Myocardial ischemia is a common and frequent disease in middle-aged and elderly people, people at this age, in daily life, if the following conditions occur, they should seek medical attention in time and diagnose as soon as possible.

1) Retrosternal or precordial pain during exertion or mental tension, or constriction-like pain, which radiates to the left shoulder and left upper arm for 3-5 minutes, and is relieved by itself after rest, accompanied by heavy sweating. (2) Those who have chest tightness, palpitations, and shortness of breath during physical activity, and are relieved by themselves when resting. (3) Exercise-related sore throat, burning, tightness, toothache, etc.

Myocardial injury, coronary artery stenosis, etc. have caused myocardial ischemia, ginseng gui capsule has the effect of blood circulation and blood stasis, can improve myocardial ischemia.

1. Narrowing of the vascular lumen including thickening of the tube wall 2. Insufficient blood flow to the myocardium due to vasoconstriction and other reasons.

Caused by narrowing or spasm of blood vessels, there are many conditions of narrowing of blood vessels, the most common being atherosclerosis.

Myocardial ischemia, also known as coronary heart disease, is mainly caused by insufficient blood supply to the heart muscle tissue caused by coronary atherosclerosis or spasticity.

Drinking, staying up late a lot, lack of necessary physical exercise, and not having good rest are the main things.

Caused by coronary atherosclerosis or by spasm of the coronary arteries.