<unk>  is a heart valve disease in which the aortic valve does not close tightly. This leads to the backward flow of blood from the aorta (the largest blood vessel) into the left ventricle (a chamber of the heart).
Aortic insufficiency
Aortic stenosis
Mitral stenosis
Aortic regurgitation
Tricuspid stenosis
Tricuspid regurgitation
Mitral regurgitation
Systolic hypertension