If the Aortic valve is severely damaged and can not be corrected with aortic valve repair surgery, in that case, your cardiac surgeon may advise for AVR(aortic valve replacement). AVR remains the standard therapy for symptomatic severe aortic stenosis due to a long and established track record of very low death and stroke rates and excellent long-term valve durability.
AVR involves removing the diseased valve and replacing it with an artificial valve. There are two types of artificial valves: biological (tissue) valves and mechanical valves. Mechanical valves are very durable, and rarely fail. However they require life long blood thinners (anticoagulant) medicines, which increase the risk of bleeding and need regular monitoring. On the other hand, biological valves do not require blood thinners, but do not last as long as mechanical valves.