What are the common diseases in cardiology?

The common diseases in the Department of Cardiology are diverse and mainly include the following categories: 1. Coronary artery disease: such as coronary heart disease, manifested as angina pectoris, myocardial infarction, etc., mostly caused by atherosclerosis of the coronary arteries. 2. Hypertension: divided into essential hypertension and secondary hypertension; it is an important risk factor for cardiovascular disease. 3. Arrhythmia: including various types such as sinus tachycardia, sinus bradycardia, atrial fibrillation, and ventricular premature contractions, characterized by abnormalities in the heart's rhythm or rate. 4. Heart valve disease: such as mitral regurgitation, aortic stenosis, etc., affecting the normal blood flow through the heart. 5. Cardiomyopathy: such as dilated cardiomyopathy, hypertrophic cardiomyopathy, etc., structural or functional abnormalities of the myocardium itself. 6. Heart failure: decreased cardiac pump function leading to insufficient blood supply to systemic tissues and organs. 7. Myocarditis: inflammation of the myocardium caused by viral, bacterial, or immune reactions. 8. Congenital heart disease: such as atrial septal defect, ventricular septal defect, etc., structural abnormalities of the heart present at birth. Other common diseases in the Department of Cardiology also include pericardial diseases, hyperlipidemia, and cardiac neurosis. These diseases require diagnosis and treatment based on the individual patient's condition.