Variable
non-MB (n=620)
CABG (n=90)
Unroofing (n=52)
Untreated (n=61)
P value
Degree of MB compression, % - 78.5±9.8* 85.8±8.1 75.4±12.4*,# <0.001
Length of MB, mm - 28.9±15.2* 22.5±15.6 16.8±10.9*,$ <0.001
Concomitant procedures
MVP 63 (10.2%) 5 (5.6%) 5 (9.6%) 9 (14.8%) 0.32
MVR 12 (1.9%) 2 (2.2%) 2 (3.8%) 0 (0%) 0.36
DVR 3 (0.5%) 0 (0%) 0 (0%) 0 (0%) 0.64
TVP 59 (9.5%) 4 (4.4%) 1 (1.9%) 6 (9.8%) 0.06
RVOTO correction 5 (0.8%) 1 (1.1%) 2 (3.8%) 1 (1.6%) 0.41
WPW pathway amputation 7 (1.1%) 0 (0%) 0 (0%) 1 (1.6%) 0.37
Maze procedure 36 (5.8%) 4 (4.4%) 1 (1.9%) 4 (6.6%) 0.55
Perioperative pacemaker 12 (1.9%) 1 (1.1%) 0 (0%) 1 (1.6%) 0.53
Cardiopulmonary bypass time, min 103.9±41.8 108.1±52.2 122.9±39.5 114.0±49.0 0.009
Aortic cross-clamping time, min 69.1±28.8 77.9±49.7* 84.8±21.5 72.1±33.4* 0.001
Postoperative ventilation time, h 19.7±20.7 21.1±24.9 20.4±12.3 22.6±18.2 0.71
Postoperative hospital stays, d 8.5±4.6 9.6±5.3 7.6±2.0 8.5±3.5 0.05
Perioperative death 2 (0.32%) 0 (0%) 0 (0%) 0 (0%) 0.636