Lots of things: Used to be rheumatic heart disease but we see that infrequently now. Congenital problems, like a bicuspid aortic valve. Hypertension. Dissecting aneurysm. Syphilis. Marfan's syndrome. Ankylosing spondylitis. Reiter's syndrome. Lupus. Infection (endocarditis).
Answered 9/28/2016
6.2k views
Many causes: A congenitally bicusip aortic valve and annuloaortic ectasia, (these 2 account for most cases in developed countries). Also: marfan's syndrome, syphilis (rare nowadays), ankylosing spondylitis, endocarditis, aortic dissection, rheumtoid arthritis, , and degenerative calcific aortic sclerosis. Rheumatic heart disease is the most common world wide cause but uncommon in the usa.
Answered 8/3/2013
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