Published online Jul 16, 2023. doi: 10.12998/wjcc.v11.i20.4874
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
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.
For this study, we adopted three-dimensional (3D) trans-perineal ultrasound to examine the SPAA distributional characteristics.
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.
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 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).
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.
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.