Table 3. Arterial Blood Gases.
| HD-CPR (n = 12) | Standard Care (n = 10) | p | |
|---|---|---|---|
| Baseline | |||
| pH | 7.52 (0.03) | 7.49 (0.03) | 0.49 |
| PaCO2 (Torr) | 41.7 (2.4) | 39.0 (1.6) | 0.37 |
| PaO2 (Torr) | 132.3 (5.9) | 138.7 (13.2) | 0.64 |
| End of Asphyxial Perioda | |||
| pH | 7.20 (0.03) | 7.19 (0.02) | 0.84 |
| PaCO2 (Torr) | 86.8 (8.8) | 77.4 (4.5) | 0.49 |
| PaO2 (Torr) | 9.3 [6.4, 16.9] | 7.8 [5.6, 11.1] | 0.48 |
| After 6 Minutes of CPRb | |||
| pH | 7.22 (0.03) | 7.31 (0.03) | 0.09 |
| PaCO2 (Torr) | 56.6 (4.3) | 45.4 (5.9) | 0.15 |
| PaO2 (Torr) | 144.0 [101.4, 160.9] | 116.6 [69, 165.1] | 0.53 |
| 45 Minutes Post-ROSC | |||
| pH | 7.38 (0.03) | 7.39 (0.07) | 0.82 |
| PaCO2 (Torr) | 39.8 [34.3, 52.1] | 37.2 [34.6, 43.0] | 0.73 |
| PaO2 (Torr) | 119.7 [102.4, 138.0] | 114.6 [101.0, 137.3] | 0.99 |
Arterial blood gas samples were drawn at baseline,
a
6min, 30s into the asphyxial period, and
b
6 minutes into the resuscitation period. Data presented as mean (SEM) or median [IQR]. Comparisons between groups performed with Student's t-test or Wilcoxon rank-sum test.
Definitions of abbreviations: BP = blood pressure; PaCO2 = arterial carbon dioxide tension; PaO2 = arterial oxygen tension; CPR = cardiopulmonary resuscitation; ROSC = return of spontaneous circulation.