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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Am J Obstet Gynecol. 2011 Nov 16;206(3):253.e16–253.e22. doi: 10.1016/j.ajog.2011.11.006
baseline
105 dGA
5 days after the 1st treatment
111 dGA
14 days after the 2nd treatment
127 dGA
vehicle betamethasone vehicle betamethasone vehicle betamethasone
Fetal
FBP (mmHg) 38 ± 1.2 37 ± 1.3 40 ± 1.0 37 ± 0.8 44 ± 1.4 * 43 ± 1.8 *
pH 7.36 ± 0.01 7.37 ± 0.01 7.35 ± 0.01 7.36 ± 0.03 7.36 ± 0.01 7.37 ± 0.01
pCO2 (mmHg) 46.3 ± 1.4 48.4 ± 0.9 49.0 ± 1.6 47.8 ± 1.7 48.8 ± 1.5 47.9 ± 1.3
pO2 (mmHg) 27.8 ± 1.0 26.6 ± 1.1 24.7 ± 1.3 24.9 ± 0.6 24.0 ± 1.2 27.7 ± 1.8
Hb (mg dl−1) 8.0 ± 0.3 8.8 ± 0.2 8.0 ± 0.3 7.7 ± 0.3 9.6 ± 0.4 8.7 ± 0.2
O2 sat (%) 75.6 ± 1.3 78.0 ± 2.8 76.4 ± 6.6 80.5 ± 1.9 74.5 ± 2.4 80.5 ± 2.3
Maternal
pH 7.46 ± 0.02 7.48 ± 0.01 7.44 ± 0.01 7.45 ± 0.01 7.46 ± 0.02 # 7.50 ± 0.01
pCO2 (mmHg) 32.0 ± 1.9 34.1 ± 0.9 31.6 ± 3.4 33.2 ± 1.4 31.5 ± 2.1 34.6 ± 1.0
pO2 (mmHg) 123.0 ± 6.0 111.1 ± 5.5 117.5 ± 7.2 111.8 ± 2.7 119.0 ± 4.5 112.9 ± 2.3
Hb (mg dl−1) 8.5 ± 0.7 9.7 ± 0.5 8.9 ± 0.4 8.7 ± 0.2 9.4 ± 0.4 9.0 ± 0.3
O2 sat (%) 96.2 ± 0.6 97.9 ± 0.6 97.9 ± 0.7 97.9 ± 0.4 98.3 ± 0.7 98.3 ± 0.3