Outcome measurements
depression, nausea, peripheral venous blood before labor, vomiting
SIDE EFFECTS, POSTPARTUM HEMORRHAGE
The primary outcomes of the study were the incidence of PPD at one week and six weeks after delivery. The diagnosis of postpartum depression was based on the reference [Ramsay sedation score before analgesia (TAll women were tested levels of norepinephrine (NE), epinephrine (E) ,C-reactive protein (CRP), interleukin-6 (IL-6) and interleukin-10 (IL-10) in peripheral venous blood before labor analgesia (when the woman was quiet in the ward), at 24 h, 1 week, and 6 weeks after delivery. Serum concentrations of IL-6 and IL-10 were determined by enzyme linked immunosorbent assay (ELISA).The duration of the first and second stage of labor, the Apgar score of fetus at delivery, and the volume of postpartum hemorrhage was calculated for 24 h after delivery. Side effects such as nightmares, drowsiness, nausea and vomiting were measured for 48 h after delivery as well.