Table 2.

Systemic arterial (pre-ductal) blood gas values measured before umbilical cord occlusion (fetal) and at 5, 20, 60 and 120 min after ventilation onset

Time	pH	(mmHg)	(mmHg)	Saturation (%)
Fetal	7.36 ± 0.01*	44.1 ± 2.8	21.1 ± 1.1*	59.1 ± 2.3*
5 min	7.21 ± 0.03	52.6 ± 5.8	76.5 ± 16.7	93.3 ± 3.8
20 min	7.24 ± 0.02	45.7 ± 5.8	63.0 ± 15.9	94.0 ± 3.6
60 min	7.25 ± 0.03	51.2 ± 6.2	41.4 ± 5.8	88.5 ± 4.2
120 min	7.24 ± 0.02	52.3 ± 5.4	43.5 ± 5.1	88.7 ± 4.2

Values indicated by

^*are significantly different to all other time points within the same column (P < 0.001).