Cardiovascular occlusion mainly refers to the occurrence of atherosclerotic plaques in the blood supply vessels of the heart, i.e. coronary arteries, in some middle-aged and elderly patients. With the involvement of various pathogenic factors and triggers, the plaques rupture and secondary thrombosis on this basis, resulting in coronary vascular occlusion, which occurs in different sizes of vessels or different parts of the same vessel, resulting in different degrees of severity of myocardial necrosis, the more proximal to the large vessels The more proximal the vessel, the greater the severity of the occlusion.
As the vessel becomes completely occluded and unable to supply blood, it can lead to ischaemic necrosis of the myocardial cells, resulting in acute myocardial infarction.