PMID: 12757651May 22, 2003Paper

Concentrations of cortisol and dehydroepiandrosterone sulfate in fetal umbilical cord blood for term labor

Zhonghua fu chan ke za zhi
Ling-yun PanQiao-ling Yuan

Abstract

To study the effect of cortisol and dehydroepiandrosterone sulfate (DHEA-S) in fetal umbilical cord blood on term labor. Cortisol and DHEA-S concentrations were measured By radioimmunoassay in 100 term fetal umbilical cord blood. They were divided into four groups. Group A selective cesarean section without any birth pain (n = 18), Group B cesarean section in latent phase (n = 10), Group C cesarean section in active phase (n = 12), Group D spontaneous vaginal deliver (n = 60). The concentrations of fetal umbilical cord cortisol in spontaneous vaginal deliver group was gradually increased with gestational week. The peak level was in the 39th gestation week, by the 42nd gestation week, the concentration of cortisol declined to the 37th gestation week. DHEA-S changed paralleled with cortisol (r = 0.46, P < 0.05). Active birth pain was associated with increased fetal umbilical cortisol concentration, but not with DHEA-S. The concentrations of fetal umbilical cord cortisol in vaginal deliver group was higher than all the cesarean section groups. Concentrations of cortisol and DHEA-S played an important role in the initiation and acceleration of labor.

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