Mitral bioprosthesis N = 174 Mitral mechanical prosthesis N = 181
P value
Age (years)
47.6 ± 9.9
46.5 ± 10
0.30
Childbearing period 134 (77%) 132 (73%) 0.39
Body mass index (Kg/m2) 26.2 ± 1.6 26.5 ± 1.8 0.098
Socioeconomic status Socioeconomic status Socioeconomic status Socioeconomic status
Poor
66 (38%)
65 (36%)
0.69
Middle
75 (43%)
85 (47%)
0.45
Rich
33 (19%)
31 (17%)
0.62
Hypertension (%) 77 (44%) 76 (42%) 0.70
Diabetes mellitus (%) 47 (27%) 45 (24.8%) 0.64
Obesity (%) 44 (25.3%) 46 (25.4%) 0.93
Family history of cardiac surgery (%) 19 (11%) 27 (15%) 0.26
Past history of cardiology intervention (%) 9 (5%) 11 (6%) 0.68
History of previous mitral valve repair (%) 5 (3%) 7 (3.7%) 0.61
Renal failure (%) 6 (3.6%) 6 (3.3%) 0.87
Cerebrovascular accident (%) 4 (2.4%) 3 (1.7%) 0.83
Chronic lung disease (%)
25 (14.4%)
28 (15.5%)
0.75
Peripheral vascular disease (%) 26 (15%) 29 (16%) 0.79
Atrial fibrillation (%) 61 (35%) 67 (37%) 0.69
EuroScore 5.6 ± 1.4 5.9 ± 2.3 0.14
New York Heart Association class 3.86 ± 0.34 3.88 ± 0.31 0.56
Echocardiographic data Echocardiographic data Echocardiographic data Echocardiographic data
Mitral valve pathology
Mitral stenosis (%)
57 (32.8%)
59 (32.6%)
0.97
Severe mitral regurgitation (> grade 4) (%)
118 (68%)
125 (69%)
0.84
Rheumatic (%)
127 (73%)
136 (75.1%)
0.67
Degenerative (%)
31 (18%)
29 (16%)
0.62
Endocarditis (%)
16 (9%)
14 (7.7%)
0.73
Ejection fraction (%)
50 ± 10
52 ± 12
0.09
Left ventricular end diastolic diameter (cm)
5.1 ± 0.7
5 ± 0.5
0.12
Left ventricular end systolic diameter (cm)
3.6 ± 0.4
3.7 ± 0.6
0.07
Left atrium (cm)
4.3 ± 0.5
4.4 ± 0.7
0.12
Right atrium (cm)
4.6 (3.9-5.2)
4.8 (4-5.5)
0.32
Pulmonary artery pressure (mmHg)
43 ± 7
44 ± 9
0.24
Annular dilatation
106 (61.1%)
114 (63%)
0.71
Annular or subvalvular calcification
49 (28%)
58 (32%)
0.41