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Aortic valve replacement is a cardiac surgery procedure whereby a failing ... while minimizing the risks of long-term anticoagulation due to reduced anticoagulation ...
Valve sparing aortic root replacement (VSARR) is an alternative procedure to the composite aortic valve graft (CAGVR, Bentall procedure). A notable benefit of VSARR is the reduced need for anticoagulation, as the patient's own aortic valve is spared and does not need to be replaced with a mechanical or bioprosthetic valve. [11]
Contrary to valve replacement with mechanical prostheses inhibition of the blood clotting system (anticoagulation) is not necessary after aortic valve repair. Blood-thinning may only be necessary if atrial fibrillation occurs or persists in order to prevent blood clot formation in the left atrium.
Tissue valves are less durable than mechanical valves, typically lasting 10–20 years. [20] This means that people with bioprosthetic valves have a higher incidence of requiring another aortic valve replacement in their lifetime. [16] Bioprosthetic valves tend to deteriorate more quickly in younger patients. [21]
Diagram of the human heart. Several adaptations of the Ross procedure have evolved, but the principle is essentially the same; to replace a diseased aortic valve with the person's own pulmonary valve (autograft), and replace the person's own pulmonary valve with a pulmonary valve from a cadaver (homograft) or a stentless xenograft.
1967 Ionescu and associates in Leeds, England, used for the first time porcine aortic valves mounted on an original valve support for mitral valve replacement in humans. [76] 1969 Hancock Laboratory in Irvine, California introduces the first commercially available porcine aortic valve for use in patients. [77]
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