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TAVR is usually reserved for individuals with severe aortic valve stenosis who are at increased risk of complications from aortic valve surgery. This procedure can relieve severe aortic valve stenosis and its symptoms in those who are at increased risk of complications from aortic valve surgery.
Aortic Stenosis Symptoms. Aortic stenosis is the narrowing of the aortic valve, which limits the aortic valve leaflet's ability to fully open and close. Valve leaflets are flaps of tissue that open and close to regulate the one-way flow of blood through the aortic valve.alcification is the process that refers to the build-up of calcium on the heart's valves. In elderly patients, aortic stenosis is sometimes caused by the build-up of calcium (mineral deposits) on the aortic valveâs leaflets. Over time the leaflets become stiff, reducing their ability to fully open and close.