[Replacement of the mitral and aortic valves with bioprostheses. Long-term results].

The purpose of the study was to analyze the medium-term results (late mortality, thromboembolism, valve failure) in patients who underwent bioprosthetic valve replacement at "A. De Gasperis" Cardiovascular Surgery Division. From October 1975 to December 1982, 195 patients were consecutively operated on and discharged (118 with mitral prosthesis, 54 with aortic prosthesis, 22 with mitral and aortic prosthesis, 1 with mitral and tricuspid prosthesis).

Long term results of isolated mitral and aortic valve replacement. A statistical evaluation.

589 patients were followed up between 1972 and 1977 after aortic (285) or mitral valve (304) replacement. Three hundred and thirty patients had a ball valve (Starr-Edwards) and 259 a disc valve (Björk-Shiley). The average follow up was 37 months for the mitral patients and 40 months for the aortic.

[Ventricular septal defect associated with aortic insufficiency: observations on 40 patients surgically treated].

Since 1970, forty patients with ventricular septal defect (VSD) and aortic insufficiency (AI) have undergone surgical treatment in our institution. In the majority of the patients (60%) the VSD was subcristal. In sixteen cases the aortic valve was replaced, whereas in 9 patients the valve was repaired and in 15 subjects simple closure of the VSD was deemed to be sufficient to correct the AI.

[Discrete subaortic stenosis. Considerations on 64 cases surgically treated].

The AA. reviewed our experience concerning 64 patients operated on for discrete subaortic stenosis due to a fibrous membrane, between 1975 and 1981 at the Department on Cardiac Surgery "A. De Gasperis" in Milan.