Characteristics at onset of ventilation
| 30 s SI N2 | 30 s SI 5% O2 | 30 s SI 21% O2 | 30 s SI 100% O2 | |
|---|---|---|---|---|
| Duration of asphyxia (min) | 10±0.8 | 11±3.0 | 13±2.2 | 10±1.6 |
| Heart rate (bpm) | 90.3±16.8 | 67.0±11.5 | 78.3±16.4 | 85.1±9.2 |
| mean CAP (mm Hg) | 18.3±2.7 | 17.5±4.0 | 19.3±6.8 | 19.6±1.8 |
| SaO2 (%) | 9.1±12.1 | 5.9±1.2 | 2.6±1.1 | 3.9±2.9 |
| pH | 6.9±0.1 | 6.9±0.1 | 6.9±0.1 | 6.9±0.1 |
| Base excess (mmol/L) | −11.6±2.2 | −14.8±2.4 | −11.6±2.6 | −13.6±1.5 |
| PaO2 (mm Hg) | 7.3±8.5 | 10.8±2.3 | 4.6±3.1 | 7.0±5.7 |
| PaCO2 (mm Hg) | 107.2±21.1 | 101.7±8.5 | 107.1±19.3 | 97.9±19.0 |
| Lactate (mmol/L) | 7.2±0.5 | 7.7±1.9 | 8.0±1.5 | 8.1±1.0 |
Values are mean±SD.
CAP, carotid arterial pressures; SI, sustained inflation.