Donald School Journal of Ultrasound in Obstetrics and Gynecology

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VOLUME 13 , ISSUE 3 ( July-September, 2019 ) > List of Articles


Assessment of Cervical Volume at 19–22 Weeks for Predicting a Prolonged Pregnancy

Nabil Manzour, Enrique Chacon, Itsaso Areta, Isabel Carriles, Isabel Brotons, Juan Luis Alcázar

Keywords : Cervical length, Cervical volume, Post-term, Pregnancy, Volume

Citation Information : Manzour N, Chacon E, Areta I, Carriles I, Brotons I, Alcázar JL. Assessment of Cervical Volume at 19–22 Weeks for Predicting a Prolonged Pregnancy. Donald School J Ultrasound Obstet Gynecol 2019; 13 (3):99-102.

DOI: 10.5005/jp-journals-10009-1592

License: CC BY-NC 4.0

Published Online: 01-12-2018

Copyright Statement:  Copyright © 2019; The Author(s).


Objective: To determine whether the transvaginal ultrasonographic measurement of the cervical volume at 19–22 weeks could predict a post-term pregnancy. Materials and methods: This work involves a retrospective case–control study comprising 44 women who delivered beyond 41 weeks and 87 women who delivered at term (37–40 + 6 weeks), matched by age and parity. All of them had undergone cervical length measurement and cervical volume estimation at 19–22 weeks. Results: Patients’ median of age was 35 years in term gestations and 34.5 years in prolonged pregnancies (p = 0.313). The mean of gestational age during delivery in the term gestation group was 275.41 days vs 289.34 days on prolonged gestations (p < 0.001). We did not observe differences in the mean cervical volume between term delivery (37.37 cm3, 95% CI: 34.59–40.14) and those who had post-term delivery (38.06 cm3, 95% CI: 33.34–42.77) (p = 0.788). In addition, we did not find differences in the median cervical length (39.0 mm vs 37.0 mm) (p = 0.610). Conclusion: It seems that there is no relationship between the cervical volume measured in the ultrasound of 20-week gestation and the prolongation of pregnancy beyond week 41.

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