Methodology and utility of intrapartum ultrasound

The introduction of ultrasound into the delivery room is a challenge in our speciality. Imaging techniques are increasingly used in obstetrics, and we are familiar with ultrasound management and the study of pelvic and foetal structures. Ultrasound has been introduced into the study of labour for decades, with a large number of high quality research papers published in the literature. Various approaches and measurements have been described, and there are parameters that have been shown to have high evidence of intrapartum usefulness, such as assessment of foetal head position. Furthermore, the inaccuracy and subjectivity of the traditional evaluation of labour progress by digital vaginal examination has been demonstrated. All this leads us to support the promotion and implementation of this ultrasound to complement our knowledge and decision-making in delivery. The aim of this review is to describe the appropriate method for this ultrasound evaluation and its main applications in labour.