Effect of the elastic conditions around a stentless valvular bioprosthesis on opening behavior

Tetsuo Fujimoto, Daisuke Kawaguchi, Yasuyuki Shiraishi, Kiyotaka Iwasaki, Makoto Arita, Takashi Tanaka, Mitsuo Umezu

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Stentless valvular bioprostheses have been used clinically for over 8 years and the excellent properties of the bioprostheses have been demonstrated in clinical studies. The present study examined how differing elastic conditions around the bioprosthesis at the aortic position affect the hydrodynamic characteristics of the bioprosthesis. Bioprosthesis implantation is typically performed using either the subcoronary or the full-root technique. These procedures for implanting a stentless prosthetic heart valve at the aortic root were hydrodynamically evaluated in a mock circulatory system. Forward flow rate was 11% greater with the subcoronary technique than with the full-root technique. In a high-speed video camera study, the orifice area at full opening was 12% larger for the subcoronary technique than for the full-root technique. Evaluation of bioprosthetic characteristics in terms of mechanical conditions is important when considering surgical options.

    Original languageEnglish
    Pages (from-to)133-136
    Number of pages4
    JournalJournal of Artificial Organs
    Volume7
    Issue number3
    DOIs
    Publication statusPublished - 2004 Sep

    Fingerprint

    Heart valve prostheses
    Bioprosthesis
    High speed cameras
    Video cameras
    Orifices
    Hydrodynamics
    Flow rate
    Heart Valves
    Cardiovascular System

    Keywords

    • Freestyle bioprosthesis
    • High-speed video camera
    • Mock circulatory system
    • Stentless prosthetic heart valve

    ASJC Scopus subject areas

    • Biophysics

    Cite this

    Effect of the elastic conditions around a stentless valvular bioprosthesis on opening behavior. / Fujimoto, Tetsuo; Kawaguchi, Daisuke; Shiraishi, Yasuyuki; Iwasaki, Kiyotaka; Arita, Makoto; Tanaka, Takashi; Umezu, Mitsuo.

    In: Journal of Artificial Organs, Vol. 7, No. 3, 09.2004, p. 133-136.

    Research output: Contribution to journalArticle

    Fujimoto, Tetsuo ; Kawaguchi, Daisuke ; Shiraishi, Yasuyuki ; Iwasaki, Kiyotaka ; Arita, Makoto ; Tanaka, Takashi ; Umezu, Mitsuo. / Effect of the elastic conditions around a stentless valvular bioprosthesis on opening behavior. In: Journal of Artificial Organs. 2004 ; Vol. 7, No. 3. pp. 133-136.
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    AU - Arita, Makoto

    AU - Tanaka, Takashi

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