Table 1. Preoperative characteristics.
| Preoperative | BTV group (n = 46) | MTV group (n = 55) | P |
| Age (years) | 63.4 ± 8.9 | 52.4 ± 7.6 | <0.01** |
| Sex (female) | 33 (71.7) | 37 (67.3) | 0.628 |
| BMI (kg/m2) | 23.1 ± 6.2 | 21.7 ± 3.4 | 0.140 |
| Diabetes mellitus (%) | 5 (10.9) | 3 (5.5) | 0.526 |
| Hypertension (%) | 5 (10.9) | 1 (1.8) | 0.135 |
| Smoking (%) | 3 (6.5) | 3 (5.5) | 1.000 |
| COPD (%) | 1 (2.2) | 4 (7.3) | 0.474 |
| Chronic kidney disease (%) | 0 (0) | 1 (1.8) | 1.000 |
| History of stroke (%) | 1 (2.2) | 2 (3.6) | 1.000 |
| NYHA class ≥3 (%) | 34 (73.9) | 35 (63.6) | 0.269 |
| LVEF (%) | 61.4 ± 8.3 | 62.5 ± 7.8 | 0.496 |
| Atrial fibrillation (%) | 36 (78.3) | 42 (76.4) | 1.000 |
| Hemoglobin (g/L) | 116.0 ± 20.9 | 115.7 ± 23.2 | 0.944 |
| Albumin (g/L) | 40.9 ± 3.6 | 39.3 ± 3.6 | 0.026 |
| Creatinine (μmoI/L) | 70.0 ± 23.9 | 70.6 ± 17.6 | 0.885 |
| Total bilirubin (μmoI/L) | 23.4 ± 14.2 | 24.1 ± 12.1 | 0.804 |
| Hepatomegaly (%) | 20 (43.5) | 34 (61.8) | 0.066 |
| TR (mL) | 55 (30.8, 70.7) | 56 (35, 84) | 0.449 |
| Right atrial volume (mL) | 169.0 (118.8, 244.3) | 207.0 (146.5, 321.5) | 0.035 * |
| Aetiology of TR (%) | 0.316 | ||
| Rheumatic | 31 (67.4) | 42 (76.4) | |
| Non rheumatic | 15 (32.6) | 13 (23.6) |
*P <0.05, **P <0.01. BTV: bioprosthetic tricuspid valve; MTV: mechanical tricuspid valve; BMI: body mass index; COPD: chronic obstructive pulmonary disease; NYHA: New York Heart Association; LVEF: left ventricular ejection fraction; TR: tricuspid regurgitation