Measurement of the Fetal Occiput-Spine Angle during the First Stage of Labor as Predictor of the Outcome of Labor
Al-Azhar International Medical Journal
In the first stage of labor, the attitude of the fetal head (relationship of the fetal head to the spine) may have a significant effect on the outcome of labor. Traditionally, diagnosis of deflexion in the fetal head is focused on digital labor examining, even though ultrasound use has recently been reported to support clinical diagnosis. Aim of the work: To measure the degree of deflection of the head of the fetus during the first labor stage by the use of ultrasound. To determine whether an
... ermine whether an ultrasound-derived parameter (the occiput-spine angle) has a relation to the course and the result of the labor. Patients and Methods: This was a possible future research performed from July 2019 to January 2020 at Alhussin Hospital. During the first stage of labor, Trans-abdominal ultrasound was observed in a nonconsecutive series of women with simplified singleton pregnancy at gestation time (37 weeks or more). The fetal position was the anterior occiput and, on the sagittal plane, sonographically, an angle was obtained between the fetal occiput and the cervical spine (occiput-spine angle. Results: The mean value of the occiput-spine angle measured during the first stage's active phase was 126° ± 2.79° (SD). In women who underwent CS, the occiput-spine angle was substantially narrower due to labor arrest. A larger occiput-spine angle (i.e., >126°) has been shown to be significantly linked to a shorter duration of labor. Conclusion: Fetuses with a smaller occiput-spine angle (<126°) have a higher risk of operative delivery.