Effect of maternal age on emergency cesarean section.

This study aims to investigate the independent influence of maternal age on the risk of emergency cesarean section (CS) due to nonreassuring fetal heart rate or arrest disorder. This was a cross-sectional study on women with nulliparous pregnancies, who are attempting vaginal delivery at term and have a cephalic presentation without the indication of elective CS at the onset of labor. The primary outcome was the rate of emergency CS.

Late-preterm infants, early-term infants, and timing of elective deliveries; current status in a Korean medical center.

Objective: The aim of this study was to examine the current perinatal outcomes among infants born late-preterm and early-term compared to those born full-term and evaluate the optimal gestational age for delivery.

Methods: We performed a retrospective cohort study for births occurred at Seoul St. Mary's Hospital over the past 7 years.