Cervical length and the risk of spontaneous labor at term

L. L. Tolaymat, V. H. Gonzalez-Quintero, L. Sanchez-Ramos, A. Kaunitz, P. Wludyka, M. J. O'Sullivan, D. Martin

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9 Scopus citations

Abstract

Objective: To investigate the relationship between cervical length (CL) at 37 to 40 weeks and delivery within 7 days and delivery by 41 weeks. Study design: We performed transvaginal ultrasound to measure CL in women with singleton gestations at 37 to 40 weeks. We then used a receiver operating characteristic curve (ROC) to assess the relationship between CL and delivery within 7 days and delivery by 41 weeks. Result: For the 120 women included in the analysis, the mean CL (±s.d.) was 25.3±9.8mm. The logistic regression model to predict each of the outcomes includes gestational age at ultrasound (GA-US) and CL. Neither birthweight, nor parity seems to affect the probability of delivery within 7 days. The ROC curve was used to assess the probability of spontaneous labor within 7 days at each CL measurement. The likelihood ratio of delivery within 7 days when CL is ≤10mm is 12. Conclusion: CL measurement at 37-40 weeks is an independent predictor of delivery within 7 days and delivery by 41 weeks regardless of GA-US. This information can be utilized when counseling patients regarding the management of term pregnancies.

Original languageEnglish (US)
Pages (from-to)749-753
Number of pages5
JournalJournal of Perinatology
Volume27
Issue number12
DOIs
StatePublished - Dec 1 2007

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ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynecology

Cite this

Tolaymat, L. L., Gonzalez-Quintero, V. H., Sanchez-Ramos, L., Kaunitz, A., Wludyka, P., O'Sullivan, M. J., & Martin, D. (2007). Cervical length and the risk of spontaneous labor at term. Journal of Perinatology, 27(12), 749-753. https://doi.org/10.1038/sj.jp.7211819