Prediction model for successful induction of labor by cervical strain elastography diagnosed at late-term pregnancy in nulliparous women: a prospective cohort study

• Main Authors: Qing Yang (Author), Chen-Chen Zhou (Author), Ying Chen (Author), Jin-Dan Pei (Author), Xiao-Lin Hua (Author), Li-Ping Yao (Author)
• Format: Book
• Published: BMC, 2023-02-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.
• Notes: 10.1186/s12884-023-05426-7; 1471-2393
• Keywords: Prediction model; Labor induction; Cervical strain elastography; Nulliparous; Women; Late-term pregnancy; Gynecology and obstetrics; RG1-991
• Source: BMC Pregnancy and Childbirth, Vol 23, Iss 1, Pp 1-9 (2023)

Abstract Background The use of cervical strain elastography for nulliparous women during late-term pregnancy remains unclear. This study assesses the predictive value of late-term cervical strain elastography for successful induction of labor (IOL) in nulliparous women. Methods This single-centered, prospective study included 86 patients undergoing IOL between January 2020 and March 2022. Univariate and multivariate analyses were conducted to identify predictive factors for successful IOL. The predictive values were assessed using the area under receiver operating characteristic (ROC) curves. Results IOL was successful in 58 patients. The hardness ratio and cervical length were significantly associated with successful late-term IOL in nulliparous women. The predictive value of the combination of hardness ratio and cervical length was higher than that of cervical length alone. Conclusions The hardness ratio and cervical length assessed by cervical strain elastography during late-term pregnancy are predictors of the success of IOL in nulliparous women. The predictive value of the combination of hardness ratio and cervical length was higher than that of cervical length alone.