What question did this study set out to answer?

The study aims to evaluate the relative position of transvaginal cerclage as a predictor of spontaneous preterm birth compared to other ultrasound parameters.

February 28, 2026BMC Pregnancy and Childbirth1 citationsOpen Access

Relative Position of Cerclage as a Predictor for Preterm Birth

Relative position of cerclage – an ultrasound marker for prediction of preterm birth

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Authors

LKLaura van der Krogt LSLisa Story ASAndrew Shennan

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Overview

Retrospective cohort study evaluates relative position of cerclage and preterm birth risk in singleton pregnancies, suggesting its predictive value over other ultrasound metrics.

Key Points

The study aims to evaluate the relative position of transvaginal cerclage as a predictor of spontaneous preterm birth compared to other ultrasound parameters.
Conducted a retrospective cohort study of singleton pregnancies with transvaginal cerclage.
Collected demographic and ultrasound data to assess differences between preterm and term delivery.
Used Student’s t-test for continuous data and chi-squared test for categorical data.
Generated receiver operator curves to evaluate predictive performance.
25% of women delivered preterm with a significant difference in relative position of cerclage (mean 0.41 vs. 0.52, p = 0.024).
Length above the cerclage was shorter in preterm births (mean 11 mm vs. 16 mm, p = 0.008).
Funnelling and amniotic fluid sludge were more likely in preterm deliveries after cerclage.
ROC analysis indicated good predictive ability for relative position (AUC 0.74) and length above cerclage (AUC 0.73).

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Cite This Study

Krogt et al. (2026) studied this question.

synapsesocial.com/papers/69a287570a974eb0d3c02ff7 https://doi.org/10.1186/s12884-026-08872-1

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February 28, 2026BMC Pregnancy and Childbirth1 citationsOpen Access

Relative Position of Cerclage as a Predictor for Preterm Birth

Relative position of cerclage – an ultrasound marker for prediction of preterm birth

View Full Paper

Authors

LKLaura van der Krogt LSLisa Story ASAndrew Shennan

Discussion

Member takes

Overview

Retrospective cohort study evaluates relative position of cerclage and preterm birth risk in singleton pregnancies, suggesting its predictive value over other ultrasound metrics.

Key Points

The study aims to evaluate the relative position of transvaginal cerclage as a predictor of spontaneous preterm birth compared to other ultrasound parameters.
Conducted a retrospective cohort study of singleton pregnancies with transvaginal cerclage.
Collected demographic and ultrasound data to assess differences between preterm and term delivery.
Used Student’s t-test for continuous data and chi-squared test for categorical data.
Generated receiver operator curves to evaluate predictive performance.
25% of women delivered preterm with a significant difference in relative position of cerclage (mean 0.41 vs. 0.52, p = 0.024).
Length above the cerclage was shorter in preterm births (mean 11 mm vs. 16 mm, p = 0.008).
Funnelling and amniotic fluid sludge were more likely in preterm deliveries after cerclage.
ROC analysis indicated good predictive ability for relative position (AUC 0.74) and length above cerclage (AUC 0.73).

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Helpful

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View Full Paper

Cite This Study

Krogt et al. (2026) studied this question.

synapsesocial.com/papers/69a287570a974eb0d3c02ff7 https://doi.org/10.1186/s12884-026-08872-1

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