| Conventional surgery (n = 37) | Minimally invasive mitral valve surgery (n = 58) | P-value |
Mortality | 7 (19) | 1 (1.7) | 0.003 |
Six-year mortality | 5 (14) | 1 (1.7 | 0.004 |
Re-operation | 4 (11) | 5 (8.6) | 0.715 |
Mean time to-reoperation (months) | 39.5 ± 21.2 | 32.1 ± 18.3 | 0.073 |
Recurrence of moderate MR | 15 (41) | 10 (17) | 0.011 |
Mean time to recurrence (months) | 15.1 ± 15.8 | 20.4 ± 13.7 | 0.086 |
Elevated mitral mean gradient immediately post-op | 3 (8.1) | 7 (12) | 0.555 |
Elevated mitral mean gradient at any point during follow-up period | 10 (27) | 20 (34) | 0.749 |