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Evaluation of freestyle bioprosthesis behavior in mechanical circulatory system

Fujimoto T., Kawaguchi D., Shiraishi Y., Iwasaki K., Arita M., Umezu M.

Biocybernetics and Biomedical Engineering

2003

Vol. 23, no. 2

51-55

A freestyle prosthetic heart valve using a porcine aortic root is expected to yield high performance. In this study, Subcoronary and Full-root techniques, that are mainly used for implanting the freestyle bioprosthesis into the aorta, were simulated under conditions in which the degree of elasticity around the bioprosthesis at the aortic root position was varied in a mechanical circulatory system. As a result, the forward flow at the bioprosthesis in the case of the Subcoronary was 11% greater than that of the Full-root. The variation in the elasticity around the bioprosthesis was suggested to influence the hydrodynamic characteristics.