Table 2

Characteristics and outcome according to the type of surgery (mitral valve repair or replacement) and associated surgery (isolated or combined) (A) in the subset of patients with degenerative mitral regurgitation and (B) in the subset of patients with functional mitral regurgitation

Isolated mitral valve surgeryCombined mitral valve surgery
OverallRepairReplacementP valueOverallRepairReplacementP value
Degenerative mitral regurgitation
 Number of patients53023810149222911380911
 Age65±1263±1268±12<0.000169±1168±1169±110.14
 Male gender3193 (60)2566 (67)627 (42)<0.00011342 (59)963 (70)379 (42)<0.0001
 Charlson Comorbidity Index0.71±1.240.60±1.131.00±1.43<0.00011.09±1.531.01±1.451.22±1.640.006
 Charlson Comorbidity Index ≥2841 (16)494 (13)347 (23)<0.0001613 (27)333 (24)280 (31)0.0005
 Public hospital3196 (60)2342 (61)854 (57)0.0051552 (68)960 (70)592 (65)0.02
 Length of stay, total13±812±615±11<0.000116±1014±918±11<0.0001
 Length of stay, intensive care unit6±95±68±9<0.00018±87±89±9<0.0001
 In-hospital mortality129 (2.4)43 (1.1)86 (5.8)<0.0001129 (5.6)42 (3.0)87 (9.6)<0.0001
Functional mitral regurgitation
 Number of patients14314639681504678826
 Age66±1265±1267±120.000668±1169±1068±11<0.05
 Male gender741 (52)314 (68)427 (44)<0.0001921 (61)509 (75)412 (50)<0.0001
 Charlson Comorbidity Index1.70±1.981.59±1.791.75±2.060.292.31±2.282.37±2.192.26±2.340.09
 Charlson Comorbidity Index ≥2612 (43)184 (40)428 (44)0.11831 (55)396 (58)435 (53)0.03
 Public hospital1152 (81)587 (84)765 (79)0.041191 (79)557 (82)634 (77)0.01
 Length of stay, total18±1513±820±17<0.000120±1617±1421±17<0.0001
 Length of stay, intensive care unit9±135±511±15<0.000110±135±1212±14<0.0001
 In-hospital mortality79 (5.5)10 (2.2)69 (7.1)<0.0001150 (9.8)47 (6.9)103 (12.5)0.0004