The aortic valve is between the left ventricle and the aorta . Regurgitation means that the valve doesn't close properly, and blood can leak backward through it. The left ventricle has to then pump more blood than normal, and will gradually get bigger because of the extra workload.
Aortic regurgitation can range from mild to severe.
Some people may notice no symptoms at all for years. As the condition worsens, however, symptoms will appear. Aortic regurgitation can be caused by several things. It may be due to a bicuspid aortic valve. It can also be found in other kinds of congenital heart disease.