TABLE 19-8.
Normal Arterial Blood Gas Values for Foals*
| GESTATIONAL AGE | POSTNATAL AGE | POSITION | pH | PaCO2 (mm Hg) | PaO2 (mm Hg) |
|---|---|---|---|---|---|
| Term† | 2 minutes | Lateral | 7.31 ± 0.02 | 54.1 ± 2.0 | 56.4 ± 2.3 |
| 15 minutes | 7.32 ± 0.03 | 50.4 ± 2.7 | 57.5 ± 3.6 | ||
| 30 minutes | 7.35 ± 0.01 | 51.5 ± 1.5 | 57.0 ± 1.8 | ||
| 60 minutes | 7.36 ± 0.01 | 47.3 ± 2.2 | 60.9 ± 2.7 | ||
| 2 hours | 7.36 ± 0.01 | 47.7 ± 1.7 | 66.5 ± 2.3 | ||
| 4 hours | 7.35 ± 0.02 | 45.0 ± 1.9 | 75.7 ± 4.9 | ||
| 12 hours | 7.36 ± 0.02 | 44.3 ± 1.2 | 73.5 ± 3.0 | ||
| 24 hours | 7.39 ± 0.01 | 45.5 ± 1.5 | 67.6 ± 4.4 | ||
| 48 hours | 7.37 ± 0.01 | 46.1 ± 1.1 | 74.9 ± 3.3 | ||
| 4 days | 7.40 ± 0.01 | 45.8 ± 1.1 | 81.2 ± 3.1 | ||
| Premature‡ | 0.5–11 hours | Lateral | 7.21 ± 0.05 | 55.3 ± 3.6 | 53.7 ± 1.5 |
*
Reported values are assumed to not be temperature corrected. Values are mean ± SEM.
†
Stewart JH, Rose RJ, Barko AM: Respiratory studies in foals from birth to seven days old, Equine Vet J 16:323, 1984.
‡
Rose RJ, Rossdale PD, Leadon DP: Blood gas and acid-base status in spontaneously delivered term-induced and induced premature foals, J Reprod Fert Suppl 32:521, 1982.