International Journal of Women's Health and Reproduction Sciences

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Apr 2021, Vol 9, Issue 2

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Original Article
Comparison Between Transvaginal Ultrasonographic Cervical Measurement and Bishop Scores as Predictors of the Onset of Labor and Vaginal Delivery in Nulliparous Women: A Prospective Study
Zinatossadat Bouzari¹, Shahla Yazdani^2,3, Seddigheh Esmaeilzadeh⁴, Samira Azimi⁵, Mahmoud Hajiahmadi⁶, Karimollah Hajian-Tilaki⁶
¹Cellular and Molecular Biology Research Center, Obstetrics &Gynecology Department, Babol University of Medical Sciences, Babol, Iran ²Cancer Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran ³Clinical Research Development Unit of Rouhani Hospital, Obstetrics and Gynecology Department, Babol University of Medical Science, Babol, Iran ⁴Fertility and Infertility Research Health Center, Babol University of Medical Science, Babol, Iran ⁵Committee Research, Resident of Obstetrics and Gynecology Babol University of Medical Sciences, Babol, Iran ⁶Biostatics and Epidemiology Department, Babol University of Medical Sciences, Babol, Iran
IJWHR 2021; 9: 118-123 DOI: 10.15296/ijwhr.2021.21 Viewed : 2697 times Downloaded : 3367 times. Keywords : Labor, Ultrasonography, Delivery, Cervical length
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Abstract

Objectives: In the present study, the transvaginal ultrasonographic cervical measurement and Bishop scores (BSs) as the predictors of the onset of active labor and vaginal delivery were compared in matched patients. Materials and Methods: This study was done on 150 nulliparous pregnant cases. Transvaginal sonography and digital examinations were performed to determine the cervical length and BS, followed by recording labor induction outcomes and analyzing the obtained values. Results: According to the obtained results, the cervical length measurement using transvaginal sonography was an independent predictor for labor induction success (AUC = 0.309, P = 0.046). The cervical length of 26.75 and 26.25 mm and the BSs of >4 were both found to be the independent predictors of vaginal delivery (AUC = 0.237, P = 0.002 and AUC = 0.752, P = 0.013), respectively. Conclusions: In general, the findings demonstrated that the transvaginal ultrasonographic cervical length measurement as an independent predictor factor for labor induction success in nulliparous women was better compared to the BS.