Normoxia/near-normoxia (n = 229) | Mild hyperoxia (n = 991) | Severe hyperoxia (n = 173) | P | |
---|---|---|---|---|
PaO2 (mmHg) | 132 (121–141) | 194 (175–214) | 292 (262–358) | < 0.001 |
Haematocrit (%) | 31 (29–34) | 30 (28–32) | 30 (28–33) | 0.027 |
Cardiac output (L/min)a | 3.7 (3.1–4.2) | 3.6 (3.1–4.1) | 3.4 (3.0–3.8) | < 0.001 |
Cardiac index (L/min/m2)a | 2.1 (1.9–2.4) | 2.1 (1.9–2.4) | 2.0 (1.9–2.2) | < 0.001 |
SvO2 (%)b | 67 (63–71) | 70 (66–74) | 72 (69–76) | < 0.001 |