Table 3. Cord blood gas analyses and placental pathology results.

Variable	MATERNAL GROUPS (N=185)			P value
	PPROM (+) AF infection n=61	PPROM (−) AF infection n=62	PPROM No Amniocentesis n=62
Cord blood gas analysis	n=40	n=34	n=44
Arterial pH ‡	7.32 [7.27–7.33]	7.30 [7.23–7.33]	7.28 [7.24–7.34]	0.281
Arterial base deficit, mmols/L ‡	4.9 [3.3–6.4]	4.2[2.7–7.5]	6.0[3.0–8.0]	0.791
Venous pH ‡	7.36 [7.31–7.39]	7.36 [7.32–7.39]	7.35 [7.31–7.38]	0.437
Venous base deficit, mmols/L ‡	4.2 [2.5–5.9]	3.5 [2.2–5.6]	4.0 [2.0–7.0]	0.746
Any cord pH < 7 §	0 (0)	1 (3)	0 (0)	0.288
Placental pathology	n=61	n=62	n=60
Amniochorion, grade ‡	2 [1–3]	0 [0–1]	0 [0–2]	<0.001
Amniochorion (grade 2–4) §	25 (74)	14 (23)	26 (43)	<0.001
Chorionic plate, stage ‡	3 [2–3]	0 [0–2]	2 [0–3]	<0.001
Chorionic plate (stage II-III) §	50 (82)	22(35)	35 (57)	<0.001
Funisitis, grade ‡	2 [0–4]	0 [0–1]	0 [0–4]	<0.001
Funisitis (grade 1–4) §	41 (67)	17 (27)	30 (49)	<0.001
Maternal HCA §  absent  mild  severe	12(20) 19(31) 30(49)	45(73) 9(15) 8(12)	34(56) 13(21) 14(23)	<0.001
Fetal HCA §  absent  mild  severe	5(8) 6(10) 50(82)	35(56) 5(8) 22(36)	24(39) 0(0) 37(61)	<0.001
Evidence of decidual hemorrhage or abruption §	5(8)	11(18)	8(13)	0.291

^‡Data presented as median [interquartile range] and analyzed by Mann Whitney Ranks Sum test;

^§Data presented as n (%) and analyzed by Chi square tests;

P values in bold font are considered significant based on P<0.05.

Abbreviations: PPROM, preterm premature rupture of membranes; IAI, intra-amniotic inflammation; HCA, histologic chorioamnionits.