Table 1.

The ABG values of 25 twin pairs (one Hx and one HI fetus/pair) and 7 normal control fetuses (TC) used to study the hippocampal electrophysiology are compared with the ABG values of the 8 HI fetuses used to study hippocampal anatomy in this paper (HI-HC)

Treatmentp (Bonferroni's multiple-comparisons test)
ABG parameterABG timeTC (n = 7)Hx (n = 24)HI (n = 21)HI-HC (n = 8)TC versus HxHx versus HIHx versus HI-HCHI versus HI-HC
O2 content (vol %)Pre-ABG7.1 ± 1.27.0 ± 1.17.0 ± 1.08.6 ± 1.2NSNS<0.05<0.05
Hx-ABG7.3 ± 1.24.8 ± 1.74.4 ± 1.45.6 ± 1.8<0.001NSNSNS
HI-ABG7.4 ± 1.24.0 ± 1.75.4 ± 2.07.1 ± 1.9<0.0001<0.01<0.0001<0.05
Post-ABG7.2 ± 1.87.1 ± 1.07.5 ± 0.98.8 ± 1.5NSNS<0.05NS
Lactate (mm)Pre-ABG1.4 ± 0.21.5 ± 0.31.5 ± 0.21.3 ± 0.3NSNSNSNS
Hx-ABG1.4 ± 0.21.5 ± 0.41.6 ± 0.21.4 ± 0.2NSNSNSNS
HI-ABG1.3 ± 0.22.3 ± 1.23.2 ± 0.93.3 ± 0.8<0.05<0.001<0.01NS
Post-ABG1.4 ± 0.22.3 ± 1.13.8 ± 1.14.1 ± 0.9<0.05<0.0001<0.0001NS
Glucose (mm)Pre-ABG1.4 ± 0.11.3 ± 0.11.2 ± 0.11.4 ± 0.1NSNSNSNS
Hx-ABG1.4 ± 0.11.3 ± 0.11.3 ± 0.11.5 ± 0.2NSNSNSNS
HI-ABG1.4 ± 0.21.3 ± 0.11.6 ± 0.11.8 ± 0.2NS<0.05<0.001NS
Post-ABG1.5 ± 0.21.5 ± 0.11.5 ± 0.11.8 ± 0.2NSNSNSNS
Hct (%)Pre-ABG29 ± 2.227 ± 2.727 ± 2.328 ± 3.6NSNSNSNS
Hx-ABG29 ± 2.227 ± 2.927 ± 2.528 ± 3.9NSNSNSNS
HI-ABG28 ± 3.028 ± 3.129 ± 2.931 ± 3.9NSNSNSNS
Post-ABG29 ± 2.027 ± 2.827 ± 3.329 ± 4.0NSNSNSNS
Hb (g/dl)Pre-ABG9.4 ± 0.78.7 ± 0.98.8 ± 0.89.2 ± 1.2NSNSNSNS
Hx-ABG9.4 ± 0.78.7 ± 1.08.8 ± 0.89.2 ± 1.3NSNSNSNS
HI-ABG9.1 ± 1.08.9 ± 1.09.4 ± 0.99.9 ± 1.3NSNS<0.05NS
Post-ABG9.3 ± 0.78.8 ± 0.99.0 ± 0.89.4 ± 1.3NSNSNSNS
sO2 (%)Pre-ABG56 ± 8.159 ± 7.659 ± 7.470 ± 4.9NSNSNSNS
Hx-ABG57 ± 8.540 ± 1337 ± 1246 ± 14<0.01NSNSNS
HI-ABG61 ± 9.133 ± 1442 ± 1653 ± 14<0.0001<0.05<0.0001NS
Post-ABG57 ± 1260 ± 7.462 ± 8.270 ± 8.7NSNSNSNS
paO2 (mmHg)Pre-ABG23 ± 2.323 ± 2.623 ± 3.025 ± 1.7NSNSNSNS
Hx-ABG23 ± 2.518 ± 3.217 ± 2.617 ± 3.6<0.001NSNSNS
HI-ABG24 ± 2.416 ± 4.419 ± 3.420 ± 4.4<0.0001NS<0.05NS
Post-ABG23 ± 3.223 ± 3.025 ± 3.226 ± 3.1NSNSNSNS
paCO2 (mmHg)Pre-ABG47 ± 2.248 ± 2.348 ± 2.845 ± 2.9NSNS<0.05<0.05
Hx-ABG47 ± 2.545 ± 2.446 ± 2.941 ± 2.9NSNS<0.01<0.01
HI-ABG45 ± 6.346 ± 3.144 ± 3.041 ± 5.3NSNS<0.001NS
Post-ABG48 ± 2.647 ± 2.048 ± 2.844 ± 3.3NSNSNS<0.05
pHPre-ABG7.4 ± 0.047.4 ± 0.027.4 ± 0.027.4 ± 0.02NSNSNSNS
Hx-ABG7.4 ± 0.047.4 ± 0.027.4 ± 0.017.4 ± 0.02<0.01NSNSNS
HI-ABG7.4 ± 0.057.4 ± 0.027.4 ± 0.037.4 ± 0.03NSNS<0.05<0.05
Post-ABG7.4 ± 0.057.4 ± 0.027.4 ± 0.037.3 ± 0.03NS<0.01<0.001NS