Prospective Study
Copyright ©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jul 16, 2023; 11(20): 4874-4882
Published online Jul 16, 2023. doi: 10.12998/wjcc.v11.i20.4874
Predictive value of the trans-perineal three-dimensional ultrasound measurement of the pubic arch angle for vaginal delivery
Zhu-Wei Liang, Wan-Li Gao
Zhu-Wei Liang, Wan-Li Gao, Department of Obstetrics and Gynecology, Beijing Tiantan Hospital, Beijing 100070, China
Author contributions: All authors contributed to the study conception and design; material preparation, data collection and analysis were performed by Liang ZW; The first draft of the manuscript was written by Liang ZW and all authors commented on previous versions of the manuscript; All authors read and approved the final manuscript.
Institutional review board statement: The study was reviewed and approved by the Beijing Tiantan Hospital Institutional Review Board (No.KY2022-105-03).
Clinical trial registration statement: This study is registered at Clinical Hospital Center, Beijing Tiantan Hospital TtrialRegistry. The registration identification number is KY2022-105-03.
Informed consent statement: All study participants, or their legal guardian, provided informed written consent prior to study enrollment.
Conflict-of-interest statement: The authors declare that they have no conflicts of interest.
Data sharing statement: No additional data are available.
CONSORT 2010 statement: The authors have read the CONSORT 2010 statement, and the manuscript was prepared and revised according to the CONSORT 2010 statement.
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Wan-Li Gao, BMed, Professor, Department of Obstetrics and Gynecology, Beijing Tiantan Hospital, No. 119 South Fourth Ring West Road, Fengtai District, Beijing 100070, China. gaolisa2004@mail.ccmu.edu.cn
Received: May 25, 2023
Peer-review started: May 25, 2023
First decision: June 13, 2023
Revised: June 16, 2023
Accepted: June 26, 2023
Article in press: June 26, 2023
Published online: July 16, 2023
ARTICLE HIGHLIGHTS
Research background

Numerous variables are linked to the success of vaginal delivery, including the subpubic arch angle (SPAA) during labor, the importance of which has not yet been fully elucidated.

Research motivation

For this study, we adopted three-dimensional (3D) trans-perineal ultrasound to examine the SPAA distributional characteristics.

Research objectives

For this study, we adopted 3D trans-perineal ultrasound to examine the SPAA distributional characteristics and to ascertain SPAA’s ability to predict the type and duration of labor.

Research methods

The present study comprised a total of 301 pregnant women who had given birth at Beijing Tiantan Hospital of the Capital Medical University between January and December of 2021.

Research results

Our analysis of 301 pregnant women revealed that the SPAA measured using 3D trans-perineal ultrasound had a minimum angle of 81° and a maximum angle of 122.2°. The angle in the normal vaginal delivery group was greater than that in the labor cesarean group (P = 0.000). The SPAA was a highly significant positive predictor of normal vaginal delivery (P = 0.000) with an area under the curve of 0.782 (P = 0.000; 95%CI: 0.717–0.848). We found the length of the second stage of labor to be positively influenced by the SPAA using linear regression analysis (P = 0.045).

Research conclusions

The SPAA was a highly significant positive predictor of normal vaginal delivery. The length of the second stage of labor and normal vaginal birth were predicted by SPAA.

Research perspectives

The SPAA as an important index in pelvic measurement that should be given greater clinical attention as it is closely related to the ability to deliver vaginally, and it can also predict the occurrence of cesarean delivery.