Maternal oxygen exposure may not change umbilical cord venous partial pressure of oxygen: non-random, paired venous and arterial samples from a randomised controlled trial

Table 2 Paired venous and arterial umbilical cord blood gases

Outcome	Oxygen Group (n = 107)	Placebo Group (n = 110)	P
Umbilical venous gas
pH	7.349 (7.297–7.397)	7.353 (7.301–7.381)	0.361
PO₂ (mmHg)	30.2 (25.4–35.2)	28.3 (23.4–35.3)	0.379
PCO₂ (mmHg)	41.8 (36.1–47.5)	42.6 (35.3–50.7)	0.39
Umbilical arterial gas
p H[11]	7.264 (7.232–7.299)	7.266 (7.217–7.298)	0.7
PO₂ (mmHg)	18.6 (15.7–23.2)	19.3 (14.6–24.7)	0.299
PCO₂ (mmHg)	54.5 (44.8–66.7)	58 (48.3–65.6)	0.19

ISSN: 1471-2393