21. Severe symptomatic aortic stenosis carries a poor prognosis. 22. This condition is often undiagnosed until later in life when the person develops symptomatic aortic stenosis . 23. Supravalvular aortic stenosis is associated with genetic damage at the Elastin gene locus on chromosome 7q11.23. 24. All suffer from a heart defect called supravalvular aortic stenosis , or SVAS, in varying degrees of severity. 25. It can also become necessary for the treatment of aortic aneurysm, less frequently for congenital aortic stenosis . 26. "' Heyde's syndrome "'is a syndrome of gastrointestinal bleeding from angiodysplasia in the presence of aortic stenosis . 27. Initially, the researchers were disappointed : Patients'cholesterol levels had no bearing on how quickly their aortic stenosis worsened. 28. These compensatory changes, termed " concentric hypertrophy, " reduce the increase in wall tension observed in aortic stenosis . 29. Patients with severe aortic stenosis have a narrowed aortic valve that does not allow blood to flow efficiently. 30. Rare causes of aortic stenosis include Fabry disease, systemic lupus erythematosus, high blood uric acid levels, and infection.
