1 coronary heart disease is life-threatening. In addition to traffic accidents and sudden death caused by various reasons (death within 24 hours of onset is called sudden death in medicine), the main cause of human death is heart disease. Almost every minute in the world, people die of coronary heart disease. Myocardial ischemia of coronary heart disease can lead to serious arrhythmia and death; Large-scale myocardial infarction can lead to acute sexual failure and death; Repeated chronic myocardial ischemia can also cause myocardial necrosis, and finally lead to severe heart failure and death.

The cause of myocardial ischemia is mainly due to the contradiction between coronary blood supply and myocardial blood demand. Chronic insufficiency of blood supply is mainly due to severe stenosis or occlusion, which is the harm of coronary heart disease.

The harm of angina pectoris and coronary heart disease is caused by vasospasm or plaque rupture, acute blood supply insufficiency, which induces thrombosis in the lumen, leading to sudden stenosis or occlusion of the lumen, and the clinical manifestation is angina pectoris.

4 Myocardial infarction If myocardial ischemia cannot be relieved for more than 30 minutes in a short time, it will lead to myocardial necrosis in the distal perfusion area downstream of the corresponding coronary artery, and the clinical manifestation is acute myocardial infarction.