The Angle of Progression at Station 0 and in Magnetic Resonance and Transperineal Ultrasound Assessment

Iliescu, D.G.; Tudorache, Ş.; Dragusin, R.; Carbunaru, O.; Patru, C.; Florea, M.; Gheonea, Ioana-Andreea

doi:10.1155/2015/748327

Cited by 4 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When CFHS was at 0, AOP was assessed 128 degrees in our investigation however some investigations measure 123, 116, and 99 degrees of AOP (5,12,13,14). Because of a wide range of AOP estimates, a case was reported in which AOP was estimated 120 degrees when CFHS was at 0 by magnetic resonance imaging which is the gold standard technique (15).…”

Section: Discussionmentioning

confidence: 77%

The Usefulness of Intrapartum Transperineal Ultrasonography for the Prediction of Mode of Delivery

Saridogan

Tekın

2021

Gynecol Obstet Reprod Med

View full text Add to dashboard Cite

OBJECTIVE: We aimed to assess the accuracy of intrapartum transperineal ultrasonography that is non-invasive, easy to learn, rapid to perform, comfortable for pregnant women, and low-cost method to evaluate the progress of labor objectively.STUDY DESIGN: We evaluated two hundred-ten singleton pregnant women at term with cephalic presentation who went into active labor via intrapartum transperineal ultrasonography using the angle of progression and head-perineum distance. Maternal characteristics, conventional vaginal examination findings, mode of delivery, and neonatal results were noted. The data were compared using correlation and regression analysis. RESULTS: The relationships between the descent of clinical fetal head station, the increase of angle of progression (p=0.001), and the decrease of head-perineum distance (p=0.001) were statistically significant. The receiver operating characteristics curve showed that measurement of angle of progression with <110.5 degrees (p=0.001) and measurement of head-perineum distance with >52.5 millimeters (p=0.001) were associated with emergent cesarean delivery. For the prediction of delivery mode, both angle of progression and head-perineum distance had high sensitivity and specificity.CONCLUSIONS: Intrapartum transperineal ultrasonography parameters were in agreement with each other and conventional vaginal examination for determination of delivery mode. Head-perineum distance was a parity-dependent measurement whilst angle of progression was parity-independent.

show abstract

Section: Discussionmentioning

confidence: 77%

The Usefulness of Intrapartum Transperineal Ultrasonography for the Prediction of Mode of Delivery

Saridogan

Tekın

2021

Gynecol Obstet Reprod Med

View full text Add to dashboard Cite

show abstract

“…However, some researchers have questioned the accuracy of ITU in assessing fetal head descent because ischial spines, the most important landmark in evaluating fetal head station (St), cannot be obtained by ultrasound 6,7 . Previous studies have tried to identify a landmark equivalent to ischial spines or St 0 on ITU images by evaluating the angle or the distance between the pubic symphysis and the ischial spine 4,[6][7][8][9] . Tustchek et al depicted a plane perpendicular to the pubis, which runs ischial spines (level of ischial spines), on ITU images; they reported that the AoP was 116° when the most presenting part of the fetus' head reached this plane 10,11 .…”

Section: Introductionmentioning

confidence: 99%

Anatomical identification of ischial spines applicable to intrapartum transperineal ultrasound based on magnetic resonance imaging of pregnant women

Yano

Iriyama

Hanaoka

et al. 2022

The Journal of Maternal-Fetal & Neonatal Medicine

View full text Add to dashboard Cite

Intrapartum transperineal ultrasound (ITU) is considered useful in judging fetal head descent; however, the inability to detect ischial spines on ITU has been a drawback to its legitimacy. The current study aimed to determine the anatomical location of ischial spines, which can be directly applied to ITU. Based on magnetic resonance imaging of 67 pregnant women at 33 +2 [31 +6 -34 +0 ] weeks gestation (median [interquartile range: IQR]), we calculated the angle between the pubic symphysis and the midpoint of ischial spines (midline symphysis-ischial spine angle; mSIA), which is theoretically equivalent to the angle of progression at fetal head station 0 on ITU, by determining spatial coordinates of pelvic landmarks and utilizing spatial vector analysis. Furthermore, we measured symphysis-ischial spine distance (SID), defined as the distance between the vertical plane passing the lower edge of the pubic symphysis and the plane that passes the ischial spines.As a result, mSIA was 109.

show abstract

Intrapartum imaging

Dückelmann,

Kalache

2023

Gynäkologie

View full text Add to dashboard Cite

The Angle of Progression at Station 0 and in Magnetic Resonance and Transperineal Ultrasound Assessment

Cited by 4 publications

References 6 publications

The Usefulness of Intrapartum Transperineal Ultrasonography for the Prediction of Mode of Delivery

The Usefulness of Intrapartum Transperineal Ultrasonography for the Prediction of Mode of Delivery

Anatomical identification of ischial spines applicable to intrapartum transperineal ultrasound based on magnetic resonance imaging of pregnant women

Intrapartum imaging

Contact Info

Product

Resources

About