Aortic valve insufficiency is a very common disease nowadays, and its diagnosis begins with auscultation, which is performed in the subclavian area, where a diastolic murmur can be heard with a stethoscope. The aortic valve is equivalent to a valve that opens but does not close. If a large amount of blood flows back into the heart, it causes a relative stenosis of the mitral valve, which causes a corresponding murmur. If the aortic valve is not closed properly, a very low pressure will be found when the blood pressure is measured. For example, a normal person’s blood pressure is about 120/80 mmHg, while a patient with aortic valve closure insufficiency may have a blood pressure of 120/50 mmHg, 120/40 mmHg, and a very low diastolic pressure. Patients with aortic valve insufficiency may also experience dizziness and even chest tightness and shortness of breath when the heart is enlarged to a certain degree. In addition, the conduction circuit may also have problems after the heart enlarges.