The clinical manifestations of left ventricular enlargement mainly include decreased vitality, easy fatigue and dyspnea, etc. However, the clinical manifestations caused by different causes may also vary, and the more common causes are coronary heart disease, hypertension and aortic valve stenosis. 1. Coronary artery disease: If the left ventricle is enlarged due to coronary artery disease, the patient usually manifests symptoms such as chest tightness, chest pain, etc., which are often triggered by activities and can be relieved after rest. 2. Hypertension: If the left ventricle is enlarged due to hypertension, it is usually caused by the patient’s blood pressure is not under good control, and the patient’s clinical manifestations are usually dizziness, headache, lumbago, and vision loss. 3. Aortic valve stenosis: If the left ventricle is enlarged due to aortic valve stenosis, the patient usually manifests dyspnea, angina, fainting and so on. If the above symptoms occur, it is recommended to go to the hospital in time for relevant examinations to clarify the cause of the disease and target treatment.