Fanghua Peng1, Yang Yu1, Yanan Sun1, Shan Jiang1, Yun Han1, Zhikun Zhang1. 1. Pelvic Floor Research Group, Department of Ultrasound and Tianjin Key Laboratory of Human Development and Reproductive Regulation, Tianjin Central Hospital of Gynecology Obstetrics, Tianjin 300100, China.
Abstract
BACKGROUND: Accurate diagnosis of labor onset is especially important for the counseling about elective induction of labor. The study aimed to evaluate whether transperineal ultrasound could better predict the timing and likelihood of spontaneous labor at term. METHODS: This single-center study was conducted between 2018 and 2019.Data on singleton pregnant women after 39 weeks and before labor onset were retrospectively reviewed. RESULTS: All the transperineal ultrasound parameters were well reproducible between the two doctors [intraclass correlation coefficient (ICC) for progression distance(PD) was 0.892, P<0.001], [ICC for angle of progression (AoP) was 0.881, P<0.001], [ICC for subpubic arch angle (SPA) was 0.766, P<0.001], [ICC for width of symphysis pubis (WSP) was 0.803, P<0.001]. For the pregnant women before 40 weeks, the width of symphysis pubis changed gradually with the of spontaneous labor (WSP) (r=0.33, P<0.05). For all included women, the SPA correlated with the time of spontaneous labor (SPA) (r=0.31, P<0.05). CONCLUSIONS: The antepartum transperineal ultrasound is a simple and objective technique that better observes the initiation of labor. And with the WSP and SPA we were able to predict labor onset and help in counseling about elective induction of labor. 2019 Annals of Translational Medicine. All rights reserved.
BACKGROUND: Accurate diagnosis of labor onset is especially important for the counseling about elective induction of labor. The study aimed to evaluate whether transperineal ultrasound could better predict the timing and likelihood of spontaneous labor at term. METHODS: This single-center study was conducted between 2018 and 2019.Data on singleton pregnant women after 39 weeks and before labor onset were retrospectively reviewed. RESULTS: All the transperineal ultrasound parameters were well reproducible between the two doctors [intraclass correlation coefficient (ICC) for progression distance(PD) was 0.892, P<0.001], [ICC for angle of progression (AoP) was 0.881, P<0.001], [ICC for subpubic arch angle (SPA) was 0.766, P<0.001], [ICC for width of symphysis pubis (WSP) was 0.803, P<0.001]. For the pregnant women before 40 weeks, the width of symphysis pubis changed gradually with the of spontaneous labor (WSP) (r=0.33, P<0.05). For all included women, the SPA correlated with the time of spontaneous labor (SPA) (r=0.31, P<0.05). CONCLUSIONS: The antepartum transperineal ultrasound is a simple and objective technique that better observes the initiation of labor. And with the WSP and SPA we were able to predict labor onset and help in counseling about elective induction of labor. 2019 Annals of Translational Medicine. All rights reserved.
Entities:
Keywords:
Labor onset; angle of progression (AoP); progression distance (PD); subpubic arch angle (SPA); width of symphysis pubis (WSP)
Authors: Christian Bamberg; Grit Rademacher; Felix Güttler; Ulf Teichgräber; Malte Cremer; Christoph Bührer; Claudia Spies; Larry Hinkson; Wolfgang Henrich; Karim D Kalache; Joachim W Dudenhausen Journal: Am J Obstet Gynecol Date: 2012-01-13 Impact factor: 8.661