The effects of a changed second stage of labor duration on the maternal and neonatal outcomes / 重庆医学

Objective To investigate the influence of the different second stage of labor duration on the maternal and neo‐natal outcomes .Methods Data were retrospectively analyzed from 201 nulliparous women delivering a singleton infant in cephalic presentation without labor analgesia hospitalized in our hospital between January 2012 and May 2015 ,whose second stage pro‐gressed beyond 2 hours .They were divided into observation group and control group according to different second stage of labor du‐ration ,and cases with a second stage of labor duration of three hours were in the observation group (163 cases) ,and those within two hours were in the control group (38 cases) .Results Whether the limit of the second stage of labor duration of 2 hours ,or 3 hours ,the risk of postpartum hemorrhage ,postpartum fever ,urinary retention and neonatal asphyxia ,admission to the neonatology department in two groups were not significantly different(P>0 .05) .However ,there was significance difference in the rate of soft birth canal laceration(72 cases in the observation group) ,poor wound healing (0 case in the observation group and 3 cases in the control group ,P<0 .05) .Conclusion a second stage of labor duration of 3 hours could reduce the rate of cesarean section ,and with no increase in severe adverse maternal and neonatal outcomes .

Correlation between the duration of labor and leptin concentration in cord blood / 대한산부인과학회지

OBJECTIVE: To evaluate the correlation of level of leptin in cord blood and duration of labor. METHODS: Eighty-four pregnant women who had delivered during Jan. 2004-Jun. 2004. at the delivery unit of St. Mary's Hospital of Catholic University Medical College. We checked the level of leptin in cord blood, total duration of labor (cervix 3 cm-delivery of placenta), age of pregnant women, body weight before pregnancy, body weight before delivery, weight of the baby and placenta, head circumference, abdominal circumference, and height of the baby. Leptin was checked by ELISA. RESULTS: Cord blood leptin was in proportion to one's pregnancy duration (umbilical vein p<0.01, umbilical artery p<0.05), change of body weight (p<0.05), weight of placenta (p<0.01), weight of newborn (umbilical artery p<0.01, umbilical vein p<0.05), baby's abdominal circumference (umbilical vein p<0.01, umbilical artery p<0.05). Leptin was in inverse proportion to head circumference of new born infant in umbilical artery (p<0.01) and in umbilical vein (p<0.05). Level of leptin in umbilical vein was in proportion to duration of labor (p<0.05). When the labor duration exceeded 8 hours, leptin in cord blood decreased suddenly, but within 8 hours, their correlation coefficient showed a strong relationship (p<0.01) between the labor duration and leptin level in cord blood. CONCLUSION: Duration of labor affects the level of leptin in cord blood.