Table 1.
Patients’ demographic data
| Severe hyperoxia (SHO) n = 75 | Moderate hyperoxia (MdHO) n = 124 | Mild hyperoxia (MHO) n = 47 | p-value | |
|---|---|---|---|---|
| Females, n (%) | 35 (14.2%) | 35 (14.2%) | 10 (4.1%) | 0.005 |
| Age, years | 66.01 ± 10.06 | 64.33 ± 10.71 | 64.30 ± 10.63 | 0.661 |
| BMI | *28.00 ± 4.69 | 28.57 ± 5.03 | *31.58 ± 5.41 | 0.001 |
| EuroSCORE | *2.10 ± 1.07 | 1.74 ± 0.09 | *1.56 ± 0.76 | 0.007 |
| Diabetes mellitus, n (%) | 15 (6.1%) | 23 (9.3%) | 16 (6.5%) | 0.081 |
| Arterial hypertension, n (%) | 58 (23.6%) | 103 (41.9%) | 41 (16.7%) | 0.353 |
| Coronary artery disease, n (%) | 46 (18.7%) | 86 (35.0%) | 41 (16.7%) | 0.009 |
| Peripheral vascular disease, n (%) | 9 (3.7%) | 24 (9.8%) | 3 (1.2%) | 0.075 |
| History of stroke, n (%) | 12 (4.9%) | 8 (3.3%) | 4 (1.6%) | 0.085 |
| Currently smoking, n (%) | 16 (6.5%) | 31 (12.6%) | 14 (5.7%) | 0.573 |
| Ejection fraction (%) | 50.27 ± 8.76 | 51.61 ± 10.44 | 50.44 ± 9.89 | 0.260 |
| Previous myocardial infarction (<90 days), n (%) | 12 (4.9%) | 17 (6.9%) | 11 (4.5%) | 0.308 |
| Intra-aortic balloon pump before surgery, n (%) | 1 (0.4%) | 6 (2.5%) | 1 (0.4%) | 0.358 |