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  • Title: Bioprostheses at twelve years.
    Author: Spampinato N, Stassano P, Cammarota A, Musumeci A, Mannacio V, Iorio D, Covino E.
    Journal: J Card Surg; 1988 Sep; 3(3 Suppl):383-90. PubMed ID: 2980041.
    Abstract:
    From January 1976 through December 1986, seven different types of bioprostheses have been implanted in our center. The following bioprostheses (total 1,414) were implanted in 1,098 patients: Carpentier-Edwards 567, Hancock 302, Liotta 268, Ionescu-Shiley 127, Angell-Shiley 72, Vascor 68, Implamedic 10. Follow-up ranged from 1 to 12 years, cumulative duration of follow-up was 6,747 patient-years and 8,637 valve-years, being 95.4% complete. Cumulative actuarial probability of being free from tissue valve failure (TVF) was 85.1% +/- 2.0% at 10 years, and 61.6% +/- 9.6% at 12 years. Actuarial probability of being free from TVF was 71.2% +/- 10.8% at 12 years for Carpentier-Edwards, 51% +/- 21.7% at 12 years for Hancock, 73.4% +/- 14.1% at 11 years for Angell-Shiley, 53% +/- 27.4% at 9 years for Liotta, 68% +/- 14.8% at 11 years for Ionescu-Shiley, 53.2% +/- 22.2% at 7 years for Vascor, 72.2% +/- 21.5% at 5 years for Implamedic bioprostheses. In this comparison of seven different bioprostheses, there is a large group of valves behaving in a very similar way. Only a few prostheses showed a constant and early negative trend.
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