Valve between the left ventricle and the aorta that prevents blood from flowing from the aorta back into the heart.
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About.com: Explains what aortic stenosis is and looks at when it should be treated and what options there are.
Consumer health resource center providing information on causes, symptoms, and treatment option of aortic aneurysms.
MedlinePlus: Aortic Insufficiency
A look at the condition and its alternative names, causes, incidence and risk factors.
MedlinePlus: Aortic Stenosis
Information about this disorder and its causes, risk factors and incidence.
NHS Choices: Aortic Valve Replacement
Provides information on this surgical procedure. Includes details of why it is used, preparations, how the procedure is performed, risks, results and recovery.
Royal Children's Hospital: Aortic Stenosis
Description and treatment, including pictures.