Imaging of the pubic arch angle in prolonged second stage of labour with intrapartum translabial 3D ultrasound and its clinical significance

Aim: To evaluate the clinical significance of the pubic arch angle (PAA) measured by intrapartum translabial 3D ultrasound during prolonged second stage of labor. Also correlation to other ITU parameters and birth outcome was measured. Materials: 42 nulliparous women at term with normally grown fetuses in cephalic presentation were evaluated. Translabial ultrasound (transverse plane) was used to measure the PAA. Correlations with fetomaternal characteristics, mode of delivery and perinatal outcome were evaluated. Results: The mean PAA was 104.3 ° (± 12.1 °; range, 84 ° – 148 °). There was a strong correlation wi…