Valve replacement with Macchi prosthesis
Pinho, P.; Vouga, L.; Torres, J.P.; Machado, F.; Graça, A.; Barreiros, F.; Nunes, R.; Monteiro, V.; Guerreiro, M.; Gomes, M.R.
Revista Portuguesa de Cardiologia Orgao Oficial da Sociedade Portuguesa de Cardiologia 10(10): 737-740
1991
ISSN/ISBN: 0870-2551 PMID: 1781991 Document Number: 384784
to evaluate the performance of a new ball valve prosthesis. set up of two groups of patients who underwent mitral valve replacement with two different prosthesis: the Macchi prosthesis under evaluation and the well known Starr-Edwards model prosthesis. The chi-square test was used to compare the results. Patients referred for valvular surgery. One group of 98 consecutive patients who underwent isolated mitral valve replacement with a Macchi prosthesis from January 1984 to June 30 1986 was compared to a matched group of 49 patients who received a Starr-Edwards prosthesis in the same period of time. Follow-up data were available from 99% patients in the Macchi group 96% in the Starr-Edwards group, with a mean follow-up time of 35.2 (2-57) and 42.9 (4-62) months, respectively. There was no statistical difference in the incidence per 100 patients--month of prosthetic complications--thromboembolism, hemorrhagic events, prosthetic endocarditis, reoperation and mechanical failure. In our experience and with the available follow-up data the Macchi prosthesis is a good cost effective option when there is indication for a ball valve prosthesis.