Table 1. Vital signs under various FiO2 conditions (N=16, mean±s.e.).
| FiO2 | EtO2 (mm Hg) | Ya (%) | Yv (%) | [O2]a (μmol/mL) | [O2]v (μmol/mL) | [O2]a-[O2]v (μmol/mL) | EtCO2 (mm Hg) | [CO2]a (μmol/mL) | HR (beats/min) | BR (breaths/min) |
|---|---|---|---|---|---|---|---|---|---|---|
| 21% | 121.3±0.8 | 98±0.1 | 65.1±1.4 | 8.6±0.2 | 5.6±0.2 | 3.0±0.1 | 42.4±0.9 | 19.7±0.2 | 65±3 | 13±1 |
| 14% | 67.4±0.7 | 87±0.9 | 54.6±1.1 | 7.5±0.2 | 4.7±0.1 | 2.8±0.1 | 41.2±0.8 | 19.7±0.2 | 75±3 | 14±1 |
| 50% | 336.5±0.9 | 99±0.03 | 70.5±1.5 | 8.9±0.2 | 6.1±0.2 | 2.8±0.1 | 41.2±0.8 | 19.4±0.2 | 62±3 | 15±1 |
| 98% | 692.9±2.1 | 99±0.05 | 75.7±1.9 | 9.3±0.1 | 6.5±0.3 | 2.8±0.1 | 39.2±0.8 | 18.9±0.2 | 64±3 | 15±1 |
EtO2/CO2, end-tidal O2/CO2; Ya/v, arterial/venous blood oxygenation; [O2]a/v, arterial/venous blood O2 content; HR, heart rate; BR, breathing rate; FiO2, fraction of inspired O2.