How does angina occur? What is the cause of angina

Angina pectoris is pain caused by acute or temporary ischemia or lack of oxygen in the heart muscle. Presents with precordial pain and a feeling of compression.

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.

The main cause of angina pectoris is due to the narrowing of the lumen of the coronary arteries due to atherosclerosis of the arteries that supply blood to the heart, resulting in insufficient blood supply to the myocardium, resulting in the above symptoms, and the typical symptoms are strangulation pain in the precordial area or squeezing pain behind the sternum. Some patients may present with chest tightness or tightness, and the pain or discomfort may radiate to the surroundings, including radiation to the left upper limbs, back and pharynx, radiating to the teeth to cause toothache may also be a manifestation of angina.

Angina pectoris is a clinical syndrome caused by myocardial hypoxia and ischemia and insufficient blood supply to the coronary arteries.

Angina pectoris is a disease in which the blood of the heart cannot meet the needs of the heart, and the stability is maintained, resulting in chest tightness, chest pain or a feeling of tightness in the precordial area.