Coronary heart disease is the abbreviation of coronary heart disease, which refers to myocardial dysfunction and/or organic lesion caused by narrowing of coronary arteries and insufficient blood supply, so it is also called ischemic heart disease. Coronary heart disease is divided into five major types with different manifestations: 1. Asymptomatic coronary heart disease Many patients have extensive coronary artery blockage but have not felt angina, and some patients do not even feel angina during myocardial infarction. These patients have the same chance of sudden cardiac death and myocardial infarction as patients with angina pectoris, so attention should be paid to the usual heart care. 2, angina pectoris type coronary artery disease manifested as a pressing sensation behind the sternum, stuffy feeling, accompanied by obvious anxiety, lasting 3 to 5 minutes, often spread to the left arm, shoulder, jaw, throat, back, sometimes can involve these parts without affecting the posterior sternal area. It is called exertional angina when it occurs under conditions of increased myocardial oxygen consumption such as exertion, emotional stress, cold, or a full meal, and is relieved by rest and nitroglycerin. It is divided into stable and unstable angina pectoris. 3, myocardial infarction type coronary heart disease manifested as persistent severe pressure, stuffy feeling, or even knife-like pain, located behind the sternum, often spread to the whole forehead, to the left side of the heavy. The pain site is the same as the previous angina site, but lasts longer and the pain is heavier, which cannot be relieved by rest and nitroglycerin. 4, ischemic cardiomyopathy type of coronary heart disease Some patients have angina pectoris attacks, and later, due to extensive lesions, extensive myocardial fibrosis, the manifestations of heart failure, such as shortness of breath, edema, weakness, etc., and various arrhythmias, manifested as palpitations. There are also some patients who never have angina pectoris and present directly with heart failure and arrhythmias. Therefore, exertional dyspnea is often caused by heart failure. 5. Sudden death coronary artery disease refers to the sudden and unpredictable death caused by coronary artery disease, resulting from cardiac arrest within 6 hours after the onset of acute symptoms. It is mainly caused by abnormal electrophysiological activity of myocardial cells due to ischemia, and serious arrhythmia occurs. Doctor’s tip Different types of coronary heart disease have different clinical manifestations, either one of them should attract our attention, we should also pay more attention to protect the health of the heart in general, when there are uncomfortable symptoms should go to the hospital for early examination, the doctor to determine the treatment plan, so as not to delay the disease.