Table 2.
Pulmonary gas exchange
| FiO2 100% | T 0 | T 60 | T 120 | T 240 |
|---|---|---|---|---|
| pHa | ||||
| Control | 7.42 ± 0.1 | 7.36 ± 0.1 | 7.38 ± 0.1 | 7.40 ± 0.1 |
| AAP | 7.36 ± 0.1 | 7.24 ± 0.1* | 7.27 ± 0.1 | 7.33 ± 0.1 |
| PaCO2, mmHg | ||||
| Control | 41.8 ± 5.0 | 44.0 ± 8.0 | 41.8 ± 5.4 | 34.9 ± 5.4 |
| AAP | 43.1 ± 3.0 | 58.4 ± 12.1* | 55.8 ± 10° | 51.4 ± 8.5° |
| PaO2, mmHg | ||||
| Control | 486 ± 55 | 455 ± 78 | 468 ± 96 | 470 ± 74 |
| AAP | 447 ± 65 | 261 ± 97*° | 332 ± 119* | 354 ± 87*#° |
Values are mean (SD) of seven. AAP, acid aspiration pneumonitis; Control, control animals; FiO2, inspired oxygen fraction; PaCO2, arterial CO2 tension; PaO2, arterial oxygen tension; paO2/FiO2, partial pressure arterial oxygen/fraction inspired oxygen ratio. * P < 0.05 vs. T0; #° P < 0.05 vs. T60, ° P < 0.05 Control vs. AAP.