What is the progression of congenital valvular aortic stenosis (AS)?

Updated: May 07, 2019
  • Author: Xiushui (Mike) Ren, MD; Chief Editor: Terrence X O'Brien, MD, MS, FACC  more...
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Congenitally malformed tricuspid aortic valves with unequally sized cusps and commissural fusion (“functionally bicuspid” valves) can also cause turbulent flow leading to fibrosis and, ultimately, to calcification and stenosis. Clinical manifestations of congenital aortic stenosis in adults usually appear after the fourth decade of life.

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