Table 5.
Analysis of variables related to rSO2 desaturation.
| Variables | Group | Time | ||||
|---|---|---|---|---|---|---|
| Baseline | Ind 15 min | CPB 15 min | PostCPB | Sternal Closure | ||
| MAP (mmHg) |
High AUT50 | 90.9 ± 16.4 | 75.0 ± 10.5 | 63.7 ± 11.3 | 67.6 ± 9.9 | 74.9 ± 11.7 |
| Low AUT50 | 89.1 ± 15.0 | 74.9 ± 10.5 | 61.9 ± 13.0 | 68.9 ± 10.2 | 77.0 ± 12.8 | |
| CI (L/min/m2) |
High AUT50 | 2.1 ± 0.7 | 2.5 ± 0.7 | 2.2 ± 0.6 | ||
| Low AUT50 | 2.2 ± 0.8 | 2.6 ± 0.9 | 2.2 ± 0.7 | |||
| CVP (mmHg) | High AUT50 | 10.5 ± 3.6 | 10.6 ± 2.6 | 11.5 ± 2.8 * | ||
| Low AUT50 | 9.8 ± 3.0 | 10.1 ± 2.8 | 10.6 ± 2.2 | |||
| PaCO2 (mmHg) | High AUT50 | 34.2 ± 3.4 * | 32.9 ± 3.9 | 34.4 ± 3.9 | 36.9 ± 3.5 * | |
| Low AUT50 | 33.5 ± 3.0 | 33.1 ± 3.8 | 33.8 ± 3.6 | 35.7 ± 3.3 | ||
| PaO2 (mmHg) | High AUT50 | 176.0 ± 44.5 | 329.0 ± 57.6 | 185.2 ± 41.8 | 167.7 ± 42.9 | |
| Low AUT50 | 179.0 ± 39.9 | 326.5 ± 59.4 | 185.6 ± 37.9 | 171.7 ± 44.6 | ||
| Temperature (°C) | High AUT50 | 36.1 ± 0.6 | 32.6 ± 2.7 | 36.4 ± 0.8 | 36.4 ± 0.5 | |
| Low AUT50 | 36.0 ± 0.6 | 32.2 ± 3.1 | 36.4 ± 0.4 | 36.4 ± 0.5 | ||
| Hemoglobin (g/dL) | High AUT50 | 12.2 ± 2.3 * | 11.5 ± 1.7 * | 7.8 ± 1.2 * | 8.2 ± 1.0 * | 9.6 ± 1.0 * |
| Low AUT50 | 13.2 ± 1.8 | 12.3 ± 1.5 | 8.4 ± 1.5 | 8.8 ± 1.2 | 10.0 ± 1.1 | |
Values are mean (standard deviation). High and low AUT50, Patients who exhibited area under the threshold of regional cerebral oxygen saturation below and absolute value of 50% greater than 113.2 min% or not; Baseline, before anesthetic induction; Ind 15 min, 15 min after anesthetic induction; CPB 15 min, 15 min after staring cardiopulmonary bypass (CPB); PostCPB, 20 min after weaning from CPB; MAP, mean arterial pressure; CI, cardiac index; CVP, central venous pressure, * p < 0.05 vs. low AUT50.