The aortic valve is located between the left ventricle and the aorta. The aortic valve opens when the ventricle ejects blood, at which point the blood enters the aorta, and closes when the ejection is complete, serving to ensure one-way blood flow. Regurgitation occurs when the valve is damaged for various reasons and the aortic valve closes incompletely. As the excess blood enters the left ventricle, it leads to an increased burden on the heart, but because the heart is so powerful, the body does not feel uncomfortable with minor blood regurgitation. However, when valve damage continues to develop and blood regurgitation increases, the body may feel palpitations, chest tightness, shortness of breath and other symptoms in a quiet state, and heart failure may be considered. If the aortic regurgitation is caused by rheumatic heart disease, valve replacement is the best treatment option.