Liang Zhu-Wei, Gao Wan-Li
Department of Obstetrics and Gynecology, Beijing Tiantan Hospital, Beijing 100070, China.
World J Clin Cases. 2023 Jul 16;11(20):4874-4882. doi: 10.12998/wjcc.v11.i20.4874.
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.
To examine the SPAA distributional characteristics and to ascertain SPAA's ability to predict the type and duration of labor.
We determined the SPAA and analyzed the corresponding data. We also evaluated the relationship between the SPAA and the mode of delivery and the duration of labor by regression. 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.
Our analysis of 301 pregnant women revealed that the SPAA measured using three-dimensional 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 ( = 0.000). The SPAA was a highly significant positive predictor of normal vaginal delivery ( = 0.000) with an area under the curve of 0.782 ( = 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 ( = 0.045).
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.
许多变量与阴道分娩的成功相关，包括分娩时的耻骨下弓角度（SPAA），其重要性尚未完全阐明。
研究SPAA的分布特征，并确定SPAA预测分娩类型和产程的能力。
我们测定了SPAA并分析了相应数据。我们还通过回归分析评估了SPAA与分娩方式和产程之间的关系。本研究共纳入了2021年1月至12月在首都医科大学附属北京天坛医院分娩的301名孕妇。
我们对301名孕妇的分析显示，使用三维经会阴超声测量的SPAA最小角度为81°，最大角度为122.2°。正常阴道分娩组的角度大于剖宫产组（P = 0.000）。SPAA是正常阴道分娩的高度显著阳性预测指标（P = 0.000），曲线下面积为0.782（P = 0.000；95%CI：0.717 - 0.848）。通过线性回归分析，我们发现第二产程的时长受SPAA的正向影响（P = 0.045）。
SPAA是正常阴道分娩的高度显著阳性预测指标。SPAA可预测第二产程的时长和正常阴道分娩。
