The sonopartogram: a novel method for recording progress of labor by ultrasound

Hassan, Wassim A.; Eggebø, T. M.; Ferguson, Marina; Gillett, Alexandra; Studd, John; Pasupathy, Dharmintra; Lees, C.

doi:10.1002/uog.13212

Cited by 69 publications

(96 citation statements)

References 24 publications

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“…The role of intrapartum sonography during labor, and the identification of risk factors related to postpartum hemorrhage has evolved over the years (79-123). As we obtain more insight into the behavior of the myometrium by ultrasound imaging, sonography (124) can become a useful noninvasive tool for assessing the third stage of labor.…”

Section: Resultsmentioning

confidence: 99%

Dynamic Changes in the Myometrium during the Third Stage of Labor, Evaluated Using Two-Dimensional Ultrasound, in Women with Normal and Abnormal Third Stage of Labor and in Women with Obstetric Complications

Patwardhan

Hernández‐Andrade

Ahn

et al. 2015

Gynecol Obstet Invest

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Objective: To investigate dynamic changes in myometrial thickness during the third stage of labor. Methods: Myometrial thickness was measured using ultrasound at one-minute time intervals during the third stage of labor in the mid-region of the upper and lower uterine segments in 151 patients including: women with a long third stage of labor (n = 30), postpartum hemorrhage (n = 4), preterm delivery (n = 7) and clinical chorioamnionitis (n = 4). Differences between myometrial thickness of the uterine segments and as a function of time were evaluated. Results: There was a significant linear increase in the mean myometrial thickness of the upper uterine segments, as well as a significant linear decrease in the mean myometrial thickness of the lower uterine segments until the expulsion of the placenta (p < 0.001). The ratio of the measurements of the upper to the lower uterine segments increased significantly as a function of time (p < 0.0001). In women with postpartum hemorrhage, preterm delivery, and clinical chorioamnionitis, an uncoordinated pattern among the uterine segments was observed. Conclusion: A well-coordinated activity between the upper and lower uterine segments is demonstrated in normal placental delivery. In some clinical conditions this pattern is not observed, increasing the time for placental delivery and the risk of postpartum hemorrhage.

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Section: Resultsmentioning

confidence: 99%

Dynamic Changes in the Myometrium during the Third Stage of Labor, Evaluated Using Two-Dimensional Ultrasound, in Women with Normal and Abnormal Third Stage of Labor and in Women with Obstetric Complications

Patwardhan

Hernández‐Andrade

Ahn

et al. 2015

Gynecol Obstet Invest

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“…The angle between these two lines (AOP) was measured. This measurement is independent of the obstetrician's experience, based on the identification of two visible bone structures easily [9,10]. All ultrasound examinations were carried out by the authors using an Acuson Antares machine with a 2-3MHz convex transducer.…”

Section: Methodsmentioning

confidence: 99%

Role of intrapartum transperineal ultrasound: Angle of progression cut-off and correlation with delivery mode

Pérez¹,

Seguer²,

Pujadas³

et al. 2017

Clin Obstet Gynecol Reprod Med

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Objective: The aim of this study was to investigate the role of the 'angle of progression' (AOP) in the prediction of vaginal delivery and establish a cut-off value.Method: 101 pregnant women were included in this prospective study. They were admitted in labor to our hospital and had singleton cephalic presentations and full-term pregnancies. AOP was measured at admission time. We analyzed the results of all the women included but also a subgroup of 66 singleton pregnant women whose assessment of the AOP was performed at the beginning of the second stage of labor.Results: Ninety-one patients had a vaginal delivery (90%) and 19 a cesarean section (10%).The area under the curve was 0.85 (95% confidence interval [CI], 0.77-0.92)and the value of the AOP that optimizes the curve was 125º (S 67.1% E 100%). In the subgroup that was assessed at the second stage of labor, the area under the curve was 0.97 (95%CI,0.90-0.99) and a value of the AOP that optimizes the curve was also 125º (S 91.38% E 100%). Conclusions:The angle of progression is a simple and reliable intrapartum ultrasound parameter for the evaluation of fetal head descent. Transperineal ultrasound assessment could help to decide the method of delivery. In our experience, the sensitivity of the ultrasound measurement increases when this is taken in the second stage of childbirth.

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“…Transperineal ultrasound, first described in the mid1990s 17 is a 2D non-invasive, objective, simple method of scanning placing a transducer outside the vagina 18 . It can be used to determine angle of progression of the fetal head 15,[19][20][21] , head-perineum distance (HPD) 22 and the degree of caput succedaneum 15,23,31,24 …”

Section: Introductionmentioning

confidence: 99%

A model to predict vaginal delivery in nulliparous women based on maternal characteristics and intrapartum ultrasound

Eggebø

Wilhelm-Benartzi

Hassan

et al. 2015

American Journal of Obstetrics and Gynecology

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The sonopartogram: a novel method for recording progress of labor by ultrasound

Abstract: Objectives Progress of labor has hitherto been assessed by digital vaginal examination (VE). We introduce the concept of a non-intrusive ultrasound (US)-

Cited by 69 publications

References 24 publications

Dynamic Changes in the Myometrium during the Third Stage of Labor, Evaluated Using Two-Dimensional Ultrasound, in Women with Normal and Abnormal Third Stage of Labor and in Women with Obstetric Complications

Dynamic Changes in the Myometrium during the Third Stage of Labor, Evaluated Using Two-Dimensional Ultrasound, in Women with Normal and Abnormal Third Stage of Labor and in Women with Obstetric Complications

Role of intrapartum transperineal ultrasound: Angle of progression cut-off and correlation with delivery mode

A model to predict vaginal delivery in nulliparous women based on maternal characteristics and intrapartum ultrasound

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