Background/aims: The study aimed to assess whether the use of intrapartum transperineal ultrasound (US) can reduce the rate of failed vacuum extraction (VE).
Methods: This is a retrospective cohort study including all women delivering at term with the diagnosis of protracted second stage of labor. The mode of delivery and rate of failed VE were compared between women who underwent a US examination prior to the decision on obstetrical interventions ("+US" group) and those in whom clinical decisions were based upon digital assessment only ("no-US" group).
Ultrasound Obstet Gynecol
February 2017
Objectives: To assess whether measurement of the angle of progression (AOP) before induction of labor (IOL) can predict successful vaginal delivery in nulliparous women.
Methods: This was a prospective, observational study of nulliparous women with a singleton term pregnancy and an indication for IOL. Transperineal sonography was used to measure the AOP before cervical ripening.
Ultrasound Obstet Gynecol
September 2012
Objectives: The angle of progression (AOP), measured by transperineal ultrasound, has been used to assess fetal head descent during labor. Our aim was to assess whether, before onset of labor, parous women have a narrower AOP than do nulliparous women and if a narrow AOP is associated with a higher rate of Cesarean delivery.
Methods: In this prospective, observational study, we performed transperineal ultrasound in pregnant women not yet in labor at ≥ 39 weeks' gestation who delivered within 1 week of sonography.