How is angina caused? What causes angina?

Angina pectoris is mainly a symptom of myocardial ischemia and hypoxia caused by absolute or relative insufficiency of myocardial blood supply.

It usually manifests as dull pain in the apical area, squeezing pain, and can also radiate to the neck or only chest tightness.

The direct cause of angina pectoris is an absolute or relative insufficiency of blood supply to the myocardium.

Therefore, various factors that reduce blood flow to the heart muscle and increase oxygen consumption may induce angina.

Insufficient blood supply to the heart muscle is mainly caused by coronary heart disease, but other types of heart disease or high blood pressure may also cause angina.

If the fat in the blood vessels is deposited, plaque will be formed, and if the plaque occurs in the coronary arteries, it will lead to stenosis, further reducing the blood supply to the heart muscle, and coronary heart disease is formed.

The causes of angina are:

1. Common angina pectoris is caused by atherosclerosis and narrowing of blood vessels in the coronary arteries, resulting in insufficient blood supply to the heart;

2. Coronary artery spasm causes narrowing of blood vessels, resulting in insufficient blood supply to the heart, resulting in angina;

3. Vagus nerve tension at night, resulting in vasospasm and variable angina;

4. Weather changes or violent mood fluctuations;

5. Other diseases include: microvascular angina pectoris caused by diffuse stenosis of microvessels caused by diabetes.

Angina pectoris is often caused by coronary atherosclerosis, when the degree of stenosis reaches a certain level, often the blood ** can not meet the needs of the patient, once the blood vessels are narrowed, more than 70%, it also meets the standard of intervention, when the patient has shortness of breath and chest pain after exercise, it is called angina, and even some patients will have angina pectoris at rest, which often represents a more serious stenosis.

The main cause of angina pectoris is that the myocardium needs the amount of oxygen, and the amount of oxygen ** is insufficient, that is, the oxygen ** and aerobic are out of balance, resulting in angina. It is the narrowing or occlusion of the blood vessels of the heart muscle, causing insufficient blood and oxygen supply, resulting in angina. In another case, the blood vessels themselves are good, but the heart muscle needs more oxygen than usual.

If the patient has severe hyperthyroidism, aortic stenosis, severe anemia, myocardial hypertrophy, etc., oxygen consumption increases significantly, which can also cause angina.

Angina pectoris is caused by vascular stenosis, myocardial ischemia and cold, strenuous exercise, and emotional agitation.

Angina pectoris can be caused by many causes, such as neuropsychiatric factors, mood changes, anxiety, and grief. High blood pressure and hyperlipidemia, diabetes, as well as excessive physical exertion and strenuous exercise, are also causes of angina.

It is usually myocardial ischemia due to coronary heart disease.

The cause of angina pectoris is mainly due to the amount of oxygen required by the myocardium, and the oxygen ** is insufficient, that is, the balance between oxygen supply and oxygen demand is out of balance, resulting in angina. It is the narrowing or occlusion of the blood vessels of the myocardium, causing insufficient blood and oxygen supply, resulting in angina. On the other hand, the blood vessels themselves are fine, but the heart muscle needs more oxygen than usual.

If the patient has severe hyperthyroidism, aortic stenosis, severe anemia, excessive myocardial hypertrophy, etc., and the oxygen consumption increases significantly, it can also cause angina.

Angina pectoris is a common heart disease and a serious condition that can lead to myocardial infarction if left untimely**. So, what causes angina? Let's take a closer look.

In summary, angina pectoris is caused by myocardial ischemia due to narrowing or blockage of the coronary credit arteries. Factors such as high blood pressure, smoking, hyperlipidemia, diabetes, etc., may also contribute to angina. Therefore, we should pay attention to maintaining a healthy lifestyle, regular medical check-ups, timely** and controlling these potential risk factors to prevent the occurrence of angina.

The main cause of angina pectoris is ischemic heart disease. Ischemic heart disease is a chronic disease caused by a narrowing or blockage of the coronary arteries, resulting in myocardial defection and disturbance of the holding of blood. When the coronary arteries are narrowed or blocked, the oxygen of the heart muscle is insufficient**, resulting in damage or even necrosis of heart muscle cells, which causes angina.

Angina pectoris refers to the blood vessels that innervate the heart, that is, the coronary arteries, under the action of certain factors, resulting in narrowing of the lumen, insufficient blood supply, and precordial and retrosternal pain caused by activity and emotional agitation. The main cause of angina pectoris is coronary atherosclerotic heart disease, and other causes such as inflammation, embolism, etc., will cause the clinical manifestations of angina. Taking coronary heart disease as an example, angina pectoris caused by coronary heart disease refers to the clinical manifestations of plaque formation on the basis of atherosclerosis in the coronary arteries, resulting in narrowing of the lumen and insufficient blood supply to the myocardium.

The main reason for it is related to blood lipids, especially LDL cholesterol. When LDL cholesterol rises, it enters the wall of the artery to form oxidized LDL, which is then engulfed by macrophages to form foam cells, thus initiating the occurrence and development of arteriosclerosis. Even if progressive plaque formation, LDL cholesterol should be closely correlated with the degree of stenosis.

Studies have shown that for every 1 mmol l decrease in LDL cholesterol levels, the ischemic event collapse and rebirth rate of coronary heart disease will decrease within the first year. It can be seen that hyperlipidemia, especially the level of low-density lipoprotein cholesterol, is closely related to the onset of angina pectoris in coronary heart disease. Other causes such as high blood pressure, diabetes, and unhealthy lifestyles, including smoking, poor diet, lack of physical activity, excessive alcohol consumption, and family factors, play a role in the onset of angina.

Angina pectoris** in older adults include:

1. Coronary atherosclerosis causes fixed luminal stenosis (often more than 75%);

2. Coronary artery spasm such as variant angina;

3. Other coronary artery lesions: such as inflammation, embolism or congenital malformations;

4. Non-coronary artery lesions: such as aortic stenosis or aortic insufficiency, syphilitic aoritis, severe anemia, hyperthyroidism, paroxysmal tachycardia;

6. Hypertrophic cardiomyopathy, mitral valve prolapse, etc. Among them, the most important is coronary heart disease, i.e. coronary atherosclerotic stenosis and/or coronary artery spasm; Five: low blood pressure, increased blood viscosity or slow blood flow.