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Stentless Aortic Xenograft Heart Valves

Humboldt Universtiy, Germany

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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.

The first generation of porcine stentless xenografts came along either as porcine root (Edwards Prima^®, Medtronic Freestyle^®) or fully scalloped for subcoronary implantation (SJM Toronto SPV^®). Implants exhibited good hemodynamic performance, a low failure rate, a low rate of endocarditis and a low need for reoperation. Recently intermediate term performance of the early series of the Edwards Prima valve has been shown to be superior to any other stentless device.⁴ The versatility of the implants allows for minimally invasive implantation, allows for treatment of annulo-ectasia and ascending aortic aneurysms, and has been used successfully in the setting of acute endocarditis. So different and difficult aortic valve . . . [Full Text of this Article]

This article has been cited by other articles:

				S. Beholz, S. Dushe, and W. Konertz Continuous Suture Technique for Freedom Stentless Valve: Reduced Crossclamp Time Asian Cardiovasc Thorac Ann, April 1, 2006; 14(2): 128 - 133. [Abstract] [Full Text] [PDF]