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Subannular mitral prosthesis in aortic position

J Gunstensen, T E David, H E Scully

    The Annals of Thoracic Surgery
    |April 1, 1977
    PubMed
    Summary
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    Björk-Shiley mitral prostheses in the aortic position prevented periprosthetic leakage in 36 patients with calcific aortic annulus over 18 months. The sewing ring flange likely provides enhanced protection against leakage.

    Area of Science:

    • Cardiovascular Surgery
    • Biomaterials Science
    • Prosthetic Valve Technology

    Background:

    • Calcific aortic annulus disease necessitates aortic valve replacement.
    • Björk-Shiley prostheses are typically used for mitral valve replacement.
    • Aortic valve prostheses are susceptible to perivalvular leakage.

    Purpose of the Study:

    • To evaluate the efficacy of Björk-Shiley subannular mitral prostheses in the aortic position.
    • To assess the incidence of periprosthetic leakage with these devices in the aortic position.
    • To investigate the protective role of the sewing ring flange against paravalvular leakage.

    Main Methods:

    • Retrospective analysis of 36 patients.
    • Björk-Shiley subannular mitral prostheses implanted in the aortic position.

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  • Follow-up for 18 months to monitor for periprosthetic leakage.

    • Main Results:

    • No instances of periprosthetic leakage were observed in any of the 36 patients.
    • The 18-month follow-up period demonstrated a 0% leakage rate.
    • The prostheses were successfully implanted in patients with calcific aortic annulus.

    Conclusions:

    • Björk-Shiley subannular mitral prostheses are safe and effective for aortic valve replacement in patients with calcific aortic annulus.
    • The unique flange design of the sewing ring appears to mitigate the risk of periprosthetic leakage.
    • Further research may explore the long-term outcomes and broader applicability of these devices in the aortic position.