Table 1. Baseline characteristics of two groups.
| Characteristics | Total (n=234) | Robotic MVP group (n=121) | Thoracoscopic MVP group (n=113) | P value |
|---|---|---|---|---|
| Basic characteristics | ||||
| Male, n (%) | 162 (69.2) | 89 (73.6) | 73 (64.6) | 0.139 |
| Age (years) | 46.5±14.0 | 45.6±13.6 | 47.7±14.7 | 0.282 |
| Hypertension, n (%) | 42 (17.9) | 18 (14.9) | 24 (21.2) | 0.207 |
| Diabetes | 12 (5.1) | 5 (4.1) | 7 (6.2) | 0.477 |
| Atrial fibrillation, n (%) | 23 (9.8) | 12 (9.9) | 11 (9.7) | 0.963 |
| History of cerebral infarction, n (%) | 8 (3.4) | 3 (2.5) | 5 (4.4) | 0.415 |
| Peripheral vascular disease, n (%) | 8 (3.4) | 4 (3.3) | 4 (3.5) | 0.922 |
| Chronic obstructive pulmonary disease, n (%) | 11 (4.7) | 6 (5.0) | 5 (4.4) | 0.848 |
| Chronic kidney disease, n (%) | 3 (1.3) | 1 (0.8) | 2 (1.8) | 0.524 |
| Mitral stenosis, n (%) | 9 (3.8) | 5 (4.1) | 4 (3.5) | 0.815 |
| NYHA functional class III/IV, n (%) | 76 (32.5) | 42 (34.7) | 34 (30.1) | 0.453 |
| Echocardiography (admission) | ||||
| Ejection fraction (%) | 66.3±7.8 | 67.1±7.8 | 65.1±7.6 | 0.094 |
| Left atrium diameter (mm) | 44.6±7.2 | 44.2±6.9 | 45.2±7.8 | 0.414 |
| Left ventricular diastolic diameter (mm) | 51.5±7.2 | 51.1±6.0 | 52.1±8.6 | 0.340 |
| Lesion site, n (%) | ||||
| A1 | 8 (3.4) | 2 (1.7) | 6 (5.3) | 0.848 |
| A2 | 19 (8.1) | 7 (5.8) | 12 (9.9) | |
| A3 | 17 (7.3) | 10 (8.3) | 7 (6.2) | |
| P1 | 11 (4.7) | 8 (6.6) | 3 (3.1) | |
| P2 | 102 (43.6) | 61 (50.4) | 41 (36.3) | |
| P3 | 17 (7.3) | 10 (8.3) | 7 (6.2) | |
| Multiple | 36 (15.4) | 15 (12.4) | 21 (18.6) | |
| Malcommissure of leaflets | 18 (7.7) | 5 (4.1) | 13 (11.5) | |
| Other | 6 (3.0) | 3 (14.3) | 3 (3.1) | |
| Cause, n (%) | ||||
| Degeneration | 175 (74.8) | 95 (78.5) | 80 (70.8) | 0.407 |
| Endocarditis | 25 (10.7) | 10 (8.3) | 15 (13.3) | |
| Congenital | 14 (6.0) | 9 (7.4) | 5 (4.4) | |
| Rheumatism | 11 (4.7) | 7 (5.8) | 4 (3.5) | |
MVP, mitral valve plasty.