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