In the United States about 10% of aortic stenosis is caused by rheumatic disease and the remainder by calcification of a unicuspid, bicuspid, or normal trileaflet valve. [11–14] Calcific aortic ...

DAVID MONTGOMERY: Aortic stenosis is a tightening of one of the four major valves of the heart. The aortic valve is particularly important because the aortic valve is the gateway to the rest of ...