Table 3.
Representative values of regional cerebral oxygen saturation.
| Total (n = 356) |
Non-Morbid (n = 309) |
Morbid (n = 47) |
p-Value | |
|---|---|---|---|---|
| Baseline rSO2 (%) | 58.0 ± 10.1 | 58.7 ± 9.7 | 52.8 ± 11.5 | 0.002 |
| Maximal rSO2 (%) | 70.8 ± 9.1 | 71.7 ± 8.7 | 65.0 ± 9.3 | <0.001 |
| Minimal rSO2 (%) | 37.6 ± 9.9 | 38.4 ± 9.6 | 32.7 ± 10.4 | 0.001 |
| AUT 80base (min%) | 355.2 ± 537.4 | 328.2 ± 479.1 | 532.4 ± 809.4 | 0.015 |
| AUT 50 (min%) | 678.7 ± 1046.5 | 566.6 ± 895.7 | 1415.6 ± 1562.0 | <0.001 |
| Complete recovery (n) | 72 (20) | 57 (19) | 15 (32) | 0.034 |
| 80% recovery (n) | 240 (67) | 208 (68) | 32 (68) | 0.988 |
| Maximal decrease (%) | 34.7 ± 14.6 | 34.2 ± 14.1 | 37.3 ± 17.4 | 0.176 |
Values are mean ± standard deviation or number of patients (%). rSO2, regional cerebral oxygen saturation; AUT 80base, area under the threshold below 80% of baseline rSO2; AUT50, area under the threshold below an absolute value of 50% of rSO2; complete recovery, restoration of rSO2 to the baseline value at the time of sternal closure; 80% recovery; restoration of rSO2 over the 80% of baseline value at the time of sternal closure. Maximal decrease; maximal decrease of rSO2 compared to the baseline value.