Influence of the active second stage of labor in nulliparous women on umbilical cord blood pH and neonatal outcomes : a population-based, cohort study
BACKGROUND: Prolonged second stage of labor increases the risk of insufficient gas exchange over the placenta to the fetus and risk of birth asphyxia. There are considerable variations in clinical guidelines regarding the recommended duration of pushing during the active second stage of labor. Thus, the aim of this study was to investigate the total duration of the second stage of labor and its as
