Table 2.
Hemodynamic performance and outcomes
| Variable | Mechanical group | Tissue group | p-value | Mechanical valve at supra-annular position | Tissue valve at supra-annular position | p-value |
|---|---|---|---|---|---|---|
| Aortic valve mean pressure gradient (mm Hg) | ||||||
| Before discharge | 12.9±5.479 | 13.83±4.510 | 0.102 | 11.77±4.220 | 13.73±4.527 | 0.007 |
| Postoperative | ||||||
| At 1 yr | 13.73±7.183 | 12.70±3.874 | 0.270 | 10.92±4.723 | 12.63±3.933 | 0.028 |
| At 3 yr | 13.03±5.331 | 12.84±5.133 | 0.850 | 10.27±3.141 | 12.86±5.270 | 0.066 |
| At 5 yr | 14.32±5.991 | 12.72±4.492 | 0.078 | 10.44±3.034 | 12.95±4.611 | 0.025 |
| Left ventricular mass index (g/m2) | ||||||
| Before discharge | 145.27±46.094 | 136.22±39.974 | 0.106 | 137.26±37.880 | 133.88±38.451 | 0.593 |
| Postoperative | ||||||
| At 1 yr | 115.64±34.009 | 108.11±29.421 | 0.083 | 111.57±24.181 | 107.42±29.309 | 0.412 |
| At 3 yr | 108.53±25.443 | 103.69±30.371 | 0.353 | 106.21±24.006 | 102.83±29.939 | 0.662 |
| At 5 yr | 105.91±26.293 | 106.96±28.098 | 0.841 | 111.27±27.616 | 104.59±25.873 | 0.364 |
Values are presented as mean±standard deviation.