Table I.
Physiological Parameters in Newborn Piglets During Repetitive Apnea with Resuscitation of 21% and Recovery Periods
| Conditions | PaO2 (mm Hg) | PaCO2 (mm Hg) | pH | Blood pressure (mm Hg) |
|---|---|---|---|---|
| Control | 82.3 ± 3.7 | 31.8 ± 1.4 | 7.48 ± 0.02 | 91.5 ± 5.1 |
| Apnea 1 | 94.1 ± 5.7 | 32.4 ± 3.2 | 7.41 ± 0.02a | 92.4 ± 4.7 |
| Apnea 2 | 90.2 ± 6.1 | 32.9 ± 3.7 | 7.32 ± 0.04a | 98.6 ± 5.7 |
| Apnea 3 | 92.1 ± 5.6 | 31.9 ± 3.4 | 7.28 ± 0.03b | 97.2 ± 4.3 |
| Apnea 4 | 91.8 ± 6.3 | 30.9 ± 3.1 | 7.25 ± 0.03b | 97.1 ± 5.1 |
| Apnea 5 | 100.1 ± 7.8 | 30.1 ± 3.5 | 7.25 ± 0.04b | 90.2 ± 3.4 |
| Apnea 6 | 100.9 ± 6.4 | 29.7 ± 2.7 | 7.24 ± 0.03b | 91.3 ± 5.2 |
| Apnea 7 | 100.3 ± 4.9 | 29.1 ± 3.1 | 7.22 ± 0.03b | 90.1 ± 5.1 |
| Apnea 8 | 104.5 ± 5.7 | 29.8 ± 2.8 | 7.21 ± 0.04b | 89.5 ± 6.7 |
| Apnea 9 | 101.8 ± 3.1 | 30.4 ± 2.7 | 7.19 ± 0.02b | 88.1 ± 5.1 |
| Apnea 10 | 99.7 ± 6.9 | 29.1 ± 1.9 | 7.19 ± 0.04b | 84.6 ± 4.8 |
| Recovery, 1 h | 87.1 ± 5.9 | 30.9 ± 4.2 | 7.36 ± 0.04a | 84.0 ± 4.1 |
| Recovery, 2 h | 81.2 ± 4.3 | 34.7 ± 3.1 | 7.40 ± 0.04a | 82.2 ± 5.6 |
The values are the means ± SD for n = 7 experiments.
a
P < 0.05;
b
P < 0.005 for difference from pre-apnea conditions as determined by one-way analysis of variance with repeated measures by Wilcoxon signed-rank test.