Table1 Clinical characteristics in two group
Variables | Hypoxemia group | No hypoxemia group | x2/t | p value |
|---|---|---|---|---|
n = 48 | n = 223 | |||
Male, n (%) | 37 (77.1) | 164 (73.5) | 0.258 | 0.611 |
Age, years | 53.4 ± 7.2 | 52.9 ± 6.2 | 0.555 | 0.579 |
BMI, Kg/m2 | 29.2 ± 4.1 | 25.8 ± 2.7 | − 7.277 | < 0.001 |
HT, n (%) | 32 (66.7) | 113 (50.7) | 4.062 | 0.044 |
T2DM, n (%) | 19 (39.6) | 26 (11.7) | 22.241 | < 0.001 |
Aortic valve disease, n (%) | 4 (8.3) | 16 (7.2) | 0.078 | 0.781 |
Metabolic syndrome, n (%) | 27 (56.3) | 17 (7.6) | 68.673 | < 0.001 |
Smoker, n (%) | 31 (64.6) | 96 (43.0) | 7.355 | 0.007 |
Marfan syndrome, n (%) | 1 (2.1) | 1 (0.4) | 1.441 | 0.230 |
CAD, n (%) | 7 (14.6) | 34 (15.2) | 0.014 | 0.907 |
History of thoracic surgery, n (%) | 2(4.2) | 21 (9.4) | 1.402 | 0.236 |
SBP, mmHg | 150.5 ± 13.4 | 143.4 ± 13.8 | − 3.264 | 0.001 |
DBP, mmHg | 80.3 ± 6.2 | 79.1 ± 6.7 | − 1.110 | 0.268 |
HR, bpm | 70.1 ± 12.3 | 71.7 ± 11.1 | 0.177 | 0.383 |
LVEF, % | 56.9 ± 6.0 | 57.4 ± 6.5 | 0.480 | 0.632 |
Troponin I, ng/mL | 0.01 (0, 0.01) | 0 (0, 0.01) | − 1.103 | 0.270 |
FBG, mmol/L | 5.0 ± 0.7 | 4.9 ± 0.4 | − 1.229 | 0.220 |
TG, mmol/L | 1.5 (1.1, 2.6) | 1.2 (1.0, 1.5) | − 2.620 | 0.009 |
HDL-C, mmol/L | 1.2 (0.9, 1.8) | 1.6 (1.1, 2.2) | − 3.925 | < 0.001 |
WBC,1012/L | 11.4 ± 1.9 | 10.0 ± 1.4 | − 5.961 | < 0.001 |
PLT, 109/L | 235.5 ± 67.8 | 217.6 ± 58.9 | − 1.653 | 0.100 |
RBC, 1012/L | 4.6 ± 0.6 | 4.6 ± 0.5 | − 0.426 | 0.670 |
Cr, μmol/L | 75.4 ± 16.4 | 76.2 ± 21.3 | 0.246 | 0.806 |
UA, μmol/L | 349.0 ± 91.9 | 338.6 ± 76.9 | 0.725 | 0.469 |
eGFR, mL/(min·1.73 m2) | 90.9 ± 14.3 | 90.5 ± 16.2 | − 0.145 | 0.885 |
Length of surgery, min | 287.3 ± 19.4 | 276.2 ± 24.9 | − 2.913 | 0.004 |
Cardiopulmonary bypass time, min | 167.5 ± 22.5 | 170.0 ± 23.0 | 0.674 | 0.501 |
Cross-clamp time, min | 87.7 ± 13.6 | 88.7 ± 13.0 | 0.465 | 0.642 |
Circulatory arrest, min | 43.4 ± 7.3 | 42.1 ± 7.5 | − 1.076 | 0.283 |
Minimum temperature, °C | 26.0 ± 0.5 | 26.0 ± 0.5 | 1.105 | 0.270 |
ICU stay time, day | 6.7 ± 1.6 | 5.4 ± 1.5 | − 5.488 | < 0.001 |
Hospital stay time, day | 20.0 ± 3.7 | 17.1 ± 4.2 | − 4.522 | < 0.001 |
PaO2/FiO2, mmHg | 256.4 ± 24.4 | 330.8 ± 13.5 | 29.346 | < 0.001 |
Mechanical ventilation time, hour | 39.2 ± 21.9 | 21.1 ± 8.2 | − 9.587 | < 0.001 |
Elevated BMI, n (%) | 18 (37.5) | 11 (4.9) | 43.839 | < 0.001 |
Elevated BP, n (%) | 47 (97.9) | 203 (91.0) | 2.619 | 0.106 |
Elevated FBG, n (%) | 23 (47.9) | 31 (13.9) | 28.643 | < 0.001 |
Reduced HDL-C, n (%) | 25 (52.1) | 42 (18.8) | 23.462 | < 0.001 |
Elevated TG, n (%) | 16 (33.3) | 26 (11.7) | 14.168 | < 0.001 |