Table 2.
Arterial gas analysis in patients with post-cardiac arrest syndrome
| Admission | 3 h | 9 h | 18 h | 24 h | |
|---|---|---|---|---|---|
| FiO2 | 0.48 ± 0.04 | 0.48 ± 0.04 | 0.48 ± 0.04 | 0.48 ± 0.04 | 0.52 ± 0.2 |
| PEEP (cm H2O) | 6.0 ± 2.2 | 6.0 ± 2.2 | 6.0 ± 2.2 | 6.0 ± 2.2 | 7.0 ± 2.7 |
| pH | 7.366 ± 0.08 | 7.344 ± 0.1 | 7.409 ± 0.06 | 7.364 ± 0.05 | 7.391 ± 0.09 |
| PCO2 (mmHg) | 43.3 ± 7.9 | 42.4 ± 4.6 | 39.0 ± 6.0 | 42.7 ± 4.5 | 41.7 ± 9.5 |
| PO2 (mmHg) | 136 ± 14 | 147 ± 53 | 135 ± 31 | 150 ± 64 | 126 ± 26 |
| HCO3− (mmol/L) | 23.9 ± 1.0 | 22.2 ± 3.2 | 24.0 ± 1.4 | 23.7 ± 1.1 | 24.3 ± 0.6 |
| B.E. (mmol/L) | –0.8 ± 1.8 | –2.4 ± 3.6 | –0.1 ± 1.6 | –0.9 ± 1.5 | –0.6 ± 1.7 |
| Lactate (mmol/L) | 1.38 ± 0.4 | 5.08 ± 6.6 | 2.72 ± 2.0 | 2.5 ± 2.4 | 1.45 ± 0.5 |
Hours indicate time after the initiation of hydrogen gas inhalation. B.E., base excess; FiO2, fraction of oxygen; HCO3−, bicarbonate ion; PCO2, pressure of carbon dioxide; PEEP, positive end expiratory pressure; PO2, pressure of oxygen.