Table 1.
Patient characteristics
| Variable | Mechanical group (n=93) | Tissue group (n=177) | p-value |
|---|---|---|---|
| Female | 36 (39) | 60 (34) | 0.433 |
| Age (yr) | 62.6±2.3 | 66.2±2.6 | <0.001 |
| Body surface area (m2) | 1.7±0.1 | 1.7±0.2 | 0.121 |
| Diabetes mellitus | 7 (8) | 25 (14) | 0.111 |
| Hypertension | 33 (36) | 73 (41) | 0.357 |
| Atrial fibrillation | 10 (11) | 25 (14) | 0.568 |
| History of stroke | 1 (1) | 12 (7) | 0.039 |
| Coronary artery disease | 11 (12) | 24 (14) | 0.687 |
| Degenerative aortic valve | 88 (95) | 166 (94) | 0.782 |
| New York Heart Association class III or IV | 23 (25) | 36 (20) | 0.407 |
| Ejection fraction (%) | 57.8±1.1 | 58.5±12.1 | 0.647 |
| Bicuspid aortic valve | 48 (52) | 94 (54) | 0.811 |
| Concomitant procedures | |||
| Coronary artery bypass grafting | 5 (5) | 20 (11) | 0.111 |
| Mitral valve repair | 8 (9) | 21 (12) | 0.411 |
| Tricuspid valve repair | 4 (4) | 13 (7) | 0.433 |
| Ascending aorta replacement | 6 (7) | 6 (3) | 0.246 |
| Ascending aorta wrapping | 9 (10) | 35 (20) | 0.033 |
| Modified maze procedure | 7 (8) | 16 (9) | 0.672 |
| Aortic root widening | 1 (1) | 1 (1) | 1.000 |
| Aortic annulus reconstruction | 3 (3) | 4 (2) | 0.635 |
| Left ventricular outflow tract muscle resection | 3 (3) | 10 (6) | 0.377 |
Values are presented as number (%) or mean±standard deviation.