主动脉瓣疾（Aortic valve disease）.docVIP

主动脉瓣疾（Aortic valve disease） Second cases of aortic valve disease Aortic valve stenosis [etiology and pathology] (1) rheumatic heart disease; Rheumatic inflammation leads to adhesion, fusion, fibrosis, stiffness, calcification, and contracture of the valve, resulting in stenosis of the valve orifice. There is almost no rheumatic aortic stenosis (aortic, stenosis), mostly associated with insufficiency of the mitral valve and mitral valve lesion. (two) congenital malformation 1. congenital malformation of the two lobe valve is the most common cause of congenital aortic stenosis. Congenital two lobe malformation is seen in 1% to 2% of the population, more than men. At birth, there is no boundary, fusion and stenosis. As a result of abnormal valve structure, even the normal hemodynamics can cause valvular thickening, calcification, stiffness and stenosis of the mouth, about 1/3 stenosis. Adult onset of an oval or narrow narrowed orifice is a common cause of isolated aortic stenosis in adults. The aortic valve two lobe malformation is easily associated with infective endocarditis, and the most common underlying heart disease in aortic valve endocarditis is two lobe malformation. 2. other congenital aortic valve malformation, congenital simple leaflet valve, valve mouth eccentric, round or teardrop shaped, at birth that is narrow. Such as the narrow start light, more calcification in adulthood the stenosis increased three; the flap of congenital stenosis is very rare, for more than three leaflets ranging from large, may be born with narrow, may also be in the middle age of valve leaf gradually fibrosis and calcification in valvular stenosis. (three) degenerative calcific aortic valve stenosis in elderly patients Common causes of simple aortic stenosis in elderly people over 65 years of age. There is no fusion at the junction, and the calcification of the aortic surface of the aortic lobe is limited by the activity of the leaflets. Calcification of mitral annulus is often a