Transvaginal 2D ultrasound measurement of cervical volume to
Transvaginal sonographic measurement of the cervical volume seems to be a helpful novel predictor for the likelihood of vaginal delivery within 24 h of induction of labor. The study was published in the BMC Pregnancy and Childbirth.

A prospective observational study was carried out. Pre-induction digital cervical assessment, transvaginal cervical length, and cervical volume measurements were performed. Inductions with singleton pregnancies at term were included. Basic demographic and clinical details, independent variables (Bishop score, cervical length, and cervical volume), and dependent variables (frequency of delivery within 24 h and induction to delivery interval) were recorded. Vaginal delivery within 24 h was the primary outcome.

- Researchers studied 100 pregnant women who had induction of labor. Median Bishop's score was 5, mean cervical length was 3.6 cm, and mean cervical volume was 27.5 cm3.

- Cervical length was the best predictor for predicting the likelihood of vaginal delivery within 24 h, and cervical volume also appeared to be a significant potential predictor.

- Cervical length was found to have the highest AUC followed by the cervical volume.

- The best cut-off value for cervical volume in predicting the likelihood of vaginal delivery within 24 h was less than 28.5 cm3 with a sensitivity of 72% and specificity of 74%.

Transvaginal sonographic measurement of cervical volume appears to be a potential novel predictor for the likelihood of vaginal delivery within 24 h of induction of labor. Cervical length is still more superior to cervical volume in predicting the likelihood of vaginal delivery. Bishop's score was not a significant predictor in this context.

Source: https://doi.org/10.1186/s12884-021-03929-9
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