What Is Arterial Stenosis?


Quick Answer

Arterial stenosis is an abnormal narrowing of one of the arteries, as defined by the National Institute of Neurological Disorders and Stroke. Stenosis increases the risk for ischemic stroke because it reduces blood flow to the brain.

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Full Answer

Aortic valve stenosis affects the opening of the aortic valve, resulting in chest pain, fainting, palpitations and breathlessness. Some people have aortic valve stenosis due to congenital heart defects, but the condition usually develops due to the presence of scarring or calcium build-up in the valve, reports the American Heart Association. Aortic valve stenosis affects the flow of blood from the left ventricle to the aorta.

Mitral valve stenosis prevents the mitral valve from opening properly. Almost everyone with mitral valve stenosis develops the condition after a bout of rheumatic fever, according to WebMD. The symptoms of mitral valve stenosis include weakness, palpitations, shortness of breath and feeling very tired, but these symptoms may not appear until as long as 20 years after someone develops mitral valve stenosis.

People with very mild symptoms may not need treatment right away. Once mitral valve stenosis causes severe symptoms, a physician might recommend repairing or replacing the damaged valve. Some people with mitral valve stenosis may also need to limit their sodium intake or avoid strenuous physical activity, reports WebMD.

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