<unk>  is the progressive narrowing of the diameter of the<unk>  valve (normal valve area is 3 - 4 cm²).   The symptoms are caused by a decrease in the stroke volume which  reduces blood flow to peripheral tissues.  The most common etiology of<unk>  is calcific<unk>  valve disease.  The management of<unk>  depends on the stage of the disease which is determined by whether the patient is symptomatic or asymptomatic, the area of the valve, and the hemodynamic consequences of the stenosis.
Aortic stenosis
Mitral stenosis
Aortic regurgitation
Aortic insufficiency
Tricuspid stenosis
Tricuspid regurgitation
Mitral regurgitation
Pulmonary valve stenosis