Table 3 The effect of duration of oxygen exposure on umbilical cord venous PO2
Outcomes | Air (N = 110) | Percentiles of oxygen exposure duration | P | |||
|---|---|---|---|---|---|---|
<25th (N = 26) | ≧25th < 50th (N = 27) | ≧50th < 75th (N = 27) | ≧75th (N = 27) | |||
Umbilical cord venous PO2 (mmHg) | 28.3 (23.4–35.3) | 30.3 (25.7–35.1) | 27.4 (25.3–34.2) | 31.6 (27.7–35.5) | 29.4 (23.2–34.8) | 0.681 |
Maternal radial arterial PO2 (mmHg) | 112.0 (104.8–118.3) | 150.4 (142.7–156.3) | 151.8 (142.8–158.8) | 150 (146.5–156.1) | 147.5 (142.5–156) | 0.000 |