Key result
Advancements in tissue processing technology have led to a renewed interest in stentless aortic xenograft heart valves, analogous to the longer-lasting experience with freehand sewn homografts.
A historical overview of stentless aortic xenograft heart valves and the impact of tissue processing technology on their development.
The history of stentless aortic valves dates back as far as the history of valve replacement per se. The first stentless valves were homografts1 and as early as 1967 the Ross-operation has been performed with remarkable long term success.2 Binet3 was the first surgeon who described the use of porcine stentless xenografts, however, due to poor tissue fixation technology these valves were abandoned very soon. Since then the fate of stented as well as stentless bioprostheses has been closely related to tissue processing technology. Analogous to the experience with homografts, which had evidenced that stentless freehand sewn grafts lasted longer than stented ones, a renewed interest in stentless valves occurred.
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Wolfgang Konertz (2003) conducted a review in Aortic valve replacement. Stentless aortic xenograft heart valves vs. Stented bioprostheses was evaluated. Advancements in tissue processing technology have led to a renewed interest in stentless aortic xenograft heart valves, analogous to the longer-lasting experience with freehand sewn homografts.
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