Mode of delivery and birth outcomes in relation to the duration of the passive second stage of labour : A retrospective cohort study of nulliparous women
OBJECTIVE: To investigate the mode of delivery and birth outcomes in relation to the duration of the passive second stage of labour in nulliparous women. METHODS AND FINDINGS: A retrospective cohort study of all nulliparous women (n = 1131) at two delivery units in Sweden. Maternal and obstetric data were obtained from electronic medical records during 2019. The passive second stage was defined as
