Zeitschrift für Kardiologie
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Comparative Study
[Hemodynamics after mitral valve replacement with Starr-Edwards, Björk-Shiley and Lillehei-Kaster protheses (author's transl)].
After mitral valve replacement hemodynamic abnormalities persist. These abnormalities were studied 1 year postoperatively. In 50 randomized patients; 15 with Starr-Edwards (SEM), 15 with Lillehei-Kaster (LKM) and 20 with Björk-Shiley (BSM) prostheses at rest and during exercise. ⋯ However, there is an important pressure gradient caused by the small internal diameter. Lillehei-Kaster pivoting disc valves reach surprisingly small functional valve areas. This may be caused by an incomplete opening of the disc.