Revisión bibliográfica: ecografía intraparto / Review: intrapartum ultrasound

The evaluation of labor is the clinical process by which variables are analyzed in order to determine whether the patient is in labor, which by definition includes regular uterine contractions that increase in frequency and intensity, associated with dilation cervical. This is done through the anamnesis and physical examination, specifically through the evaluation of contractions and vaginal examination, the latter is intended to specify the degree of dilation, cervical effacement that the patient presents and also allows to a certain degree, establish the presentation, attitude and variety of position in which the fetus is located. From this premise, it is proposed that vaginal examination, since it is operator dependent, is not an objective evaluation, therefore, there is a need to reach consensus on the evaluation, and in order to carry it out, evaluation with ultrasound is proposed, which has as a purpose to objectify the variety of position and presentation of the fetus. Due to the above, this article aims to capture the knowledge that is currently possessed about the uses and methodology that intrapartum ultrasound presents.

A study on clinical application of intrapartum ultrasound / 中华医学超声杂志（电子版）

Objective To discuss the clinical application of getting the images related to the partogram content using the intrapartum ultrasound. Methods One hundred twenty-three pregnant women who tried vaginal delivery in Huai'an Maternity and Children Hospital were included in this study. Intrapartum ultrasound was performed during the progression of labor every two hours. To obtain the images related to the fetal position by transabdominal or transperineal ultrasound in transverse view, determining the fetal head position; to obtain the images related to the fetal head station by transperineal ultrasound in mid-sagittal and transverse views , measuring the angle of progression (AOP) and the fetal head-perineum distance (HPD); to obtain the images related to the cervical dilatation by transperineal ultrasound in transverse view, measuring the anteroposterior diameter of the cervical dilatation. Results This study included 123 pregnant women, 123 images were obtained related to the fetal position; 122 images of AOP related to the fetal head station were measured; and 123 images of HPD related to the fetal head station were measured; 121 images related to the cervical dilatation, all the images can clearly displayed various ultrasonic markers, which can be used to determine the fetal position, the fetal head station and the cervical dilation. Conclusion Intrapartum ultrasound could get the images related to the partogram content, it could be studied to use in labor.