Table 2.
Physiological & optical variables at baseline.
| Variable | Baseline value (IQR) |
|---|---|
| FiO2 | 0.325 (0.28–0.35) |
| paO2 (kPa) | 15.7 (12.5–18.0) |
| paCO2 (kPa) | 4.85 (4.65–4.97) |
| SpO2 (%) | 99 (98–99) |
| MAP (mmHg) | 91.5 (83.2–96.8) |
| Vmca (cm.s−1) | 52.1 (48.7–71.8) |
| pbrO2 (mmHg) | 17.5 (12.0–24.4) |
| Microdialysate LPR | 25.3 (23.5–33.5) |
| TOI (%) | 72.8 (65.5–77.0) |
| DPF | 9.33 (6.75–10.8) |
| µs (cm−1) | 11.1 (6.76–12.4) |
DPF: differential pathlength factor; FiO2: inspired oxygen fraction; IQR: inter-quartile range; MAP: mean arterial blood pressure; LPR: lactate:pyruvate ratio; paO2: arterial pO2; paCO2: arterial pCO2; pbrO2, brain tissue pO2; TOI: tissue oxygenation index; SpO2: arterial oxygen saturation; µs: optical reduced scattering coefficient; Vmca: middle cerebral artery blood flow velocity.