Table 1 Baseline characteristics of the patients underwent cardiac surgery
Variable | Control group (n = 64) | Prolonged MV group (n = 54) | Total (n = 118) | P value |
|---|---|---|---|---|
Male sex, n (%) | 36 (56.2) | 35 (64.8) | 72 (61.0%) | 0.344 |
Age, y | 66 (54, 71) | 66 (55, 72) | 66 (54, 72) | 0.906 |
BMI | 23.9 (21.1, 26.9) | 24.8 (21.0, 27.6) | 24.1 (21.1, 27.6) | 0.774 |
APACHE II score | 15 (13, 18) | 15 (12, 18) | 15 (12, 18) | 0.590 |
EuroSCORE | 7 (5, 8) | 6 (5, 8) | 7 (5, 8) | 0.930 |
Length of hospital stay, d | 22 (17, 28) | 27 (21, 37) | 25 (19, 32) | 0.002 |
Length of ICU stay, d | 5 (4, 10) | 12 (8, 19) | 8 (5, 13) | < 0.001 |
Time of mechanical ventilation, d | 3 (3, 4) | 8 (5, 10) | 4 (3, 7) | < 0.001 |
Mortality, n (%) | 11 (17.2) | 10 (18.5) | 22 (18.6%) | 0.851 |
Type of operation, n (%) | ||||
Isolated valve surgery | 16 (25.0) | 15 (27.8) | 31 (26.3) | 0.733 |
Isolated CABG | 9 (14.1) | 3 (5.6) | 12 (10.2) | 0.223 |
Combined CABG and valve surgery | 13 (20.3) | 6 (11.1) | 19 (16.1) | 0.175 |
Aortic surgery | 22 (34.4) | 28 (51.8) | 50 (42.4) | 0.056 |
Other surgery | 4 (6.2) | 2 (3.7) | 6 (5.1) | 0.836 |
Co-morbidities, n (%) | ||||
Coronary heart disease | 28 (43.8) | 15 (27.8) | 42 (35.6) | 0.072 |
Hypertension | 38 (59.4) | 34 (63.0) | 73 (61.9) | 0.691 |
Diabetes mellitus | 14 (21.9) | 9 (16.7) | 23 (19.5) | 0.477 |
Arterial fibrillation | 15 (23.4) | 6 (11.1) | 20 (16.9) | 0.081 |
Stroke | 7 (10.9) | 3 (5.6) | 10 (8.5) | 0.475 |
Chronic kidney disease | 4 (6.2) | 0 (0) | 4 (3.4) | 0.025 |
LVEF, % | 49 (40, 62) | 57 (46, 61) | 53 (40, 61) | 0.240 |
Operation time, min | 350 (275, 405) | 375 (290, 446) | 355 (280, 440) | 0.179 |