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.
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.
Rand L, Robinson JN, et al. Post-term induction of labor revisited. Obstet Gynecol 2000;96:779–783. DOI: 10.1016/S0029-7844(00)01002-4.
Sanchez-Ramos L, Olivier F, et al. Labor induction versus expectant management for postterm pregnancies: a systematic review with meta-analysis. Obstet Gynecol 2003;101:1312–1318. DOI: 10.1097/00006250-200306000-00029.
ACOG Practice Bulletin. Clinical management guidelines for obstetricians-gynecologists. Number 55, September 2004 (replaces practice pattern number 6, October 1997). Management of Postterm Pregnancy. Obstet Gynecol 2004;104:639–646. DOI: 10.1097/00006250-200409000-00052.
Magann EF, McNamara MF, et al. Can we decrease postdatism in women with an un-favorable cervix and a negative fetal fibronectin test result at term by serial membrane sweeping? Am J Obstet Gynecol 1998;179:890–894. DOI: 10.1016/S0002-9378(98)70184-X.
McKenna DS, Costa SW, et al. Prostaglandin E2 cervical ripening without subsequent induction of labor. Obstet Gynecol 1999;94: 11–14. DOI: 10.1016/S0029-7844(99)00244-6.
Imai M, Tani A, et al. Significance of fetal fibronectin and cytokine measurement in the cervico-vaginal secretions of women at term in predicting term labor and post-term pregnancy. Eur J Obstet Gynecol Reprod Biol 2001;97:53–58. DOI: 10.1016/S0301-2115(00)00483-8.
Lockwood CJ, Moscarelli RD, et al. Low concentrations of vaginal fetal fibronectin as a predictor of deliveries occurring after 41 weeks. Am J Obstet Gynecol 1994;171:1–4. DOI: 10.1016/S0002-9378(94)70068-0.
Vaisanen-Tommiska M, Nuutila M, et al. Cervical nitric oxide release in women postterm. Obstet Gynecol 2004;103:657–662. DOI: 10.1097/01.AOG.0000115509.10605.64.
Ramanathan G, Yu C, et al. Ultrasound examination at 37 weeks’ gestation in the prediction of pregnancy outcome: the value of cervical assessment. Ultrasound Obstet Gynecol 2003;22:598–603. DOI: 10.1002/uog.913.
Vimercati A, Greco P, et al. The value of ultrasonographic examination of the uterine cervix in predicting post-term pregnancy. J Perinat Med 2001;29:317–321. DOI: 10.1515/JPM.2001.045.
Iams JD, Goldenberg RL, et al. The length of the cervix and the risk of spontaneous premature delivery. National Institute of Child Health and Human Development Maternal Fetal Medicine Unit Network. N Engl J Med 1996 Feb 29;334(9):567–572. DOI: 10.1056/NEJM199602293340904.
Carvalho MH, Bittar RE, et al. Cervical length at 11–14 weeks’ and 22–24 weeks’ gestation evaluated by transvaginal sonography, and gestational age at delivery. Ultrasound Obstet Gynecol 2003;21: 135–139. DOI: 10.1002/uog.32.
Hassan SS, Romero R, et al. Patients with an ultrasonographic cervical length < or = 15 mm have nearly a 50% risk of early spontaneous preterm delivery. Am J Obstet Gynecol 2000;182:1458–1467. DOI: 10.1067/mob.2000.106851.
Murakawa H, Utumi T, et al. Evaluation of threatened preterm delivery by transvaginal ultrasonographic measurement of cervical length. Obstet Gynecol 1993;82:829–832.
Heath VC, Southall TR, et al. Cervical length at 23 weeks of gestation: prediction of spontaneous pre-term delivery. Ultrasound Obstet Gynecol 1998;12:312–317. DOI: 10.1046/j.1469-0705.1998.12050312.x.
To MS, Skentou C, et al. Cervical length and funneling at 23 weeks of gestation in the prediction of spontaneous early preterm delivery. Ultrasound Obstet Gynecol 2001;18:200–203. DOI: 10.1046/j.1469-0705.2001.00437.x.
Young HS, Kyo HP, et al. Prediction of prolonged pregnancy in nulliparous women by transvaginal ultrasonographic measurement of cervical length at 20–24 weeks and 37 weeks. J Korean Med Sci 2007;22:89–93. DOI: 10.3346/jkms.2007.22.1.89.
Rovas L, Sladkevicius P, et al. Reference data representative of normal findings at two-dimensional and three-dimensional gray-scale ultrasound examination of the cervix from 17 to 41 weeks’ gestation. Ultrasound Obstet Gynecol 2006;27:392–402. DOI: 10.1002/uog. 2658.
Rovas L, Sladkevicius P, et al. Reference data representative of normal findings at three-dimensional power Doppler ultrasound examination of the cervix from 17 to 41 gestational weeks. Ultrasound in Obstetrics and Gynecology 2006;28:761–767. DOI: 10.1002/uog.2857.
Arribas S, Alcázar JL, et al. Three-Dimensional Transvaginal Sonography and Magnetic Resonance Imaging for Local Staging of Cervical Cancer. Journal of Ultrasound in Medicine 2016;35:867–873. DOI: 10.7863/ultra.15.05071.
Donelan EA, Grobman WA, et al. Association of Second-Trimester Cervical Length with Prolonged Pregnancy. Obstet Gynecol 2015;126:534–538. DOI: 10.1097/AOG.0000000000000976.
Boelig RC, Orzechowski KM, et al. Second trimester cervical length and prolonged pregnancy. J Matern Fetal Neonatal Med 2016;29:4088–4091. DOI: 10.3109/14767058.2016.1159191.
van der Ven AJ, van Os MA, et al. Midpregnancy Cervical Length in Nulliparous Women and its Association with Postterm Delivery and Intrapartum Cesarean Delivery. Am J Perinatol 2016;33:40–46. DOI: 10.1055/s-0035-1556067.
Thangaraj JS, Habeebullah S, et al. Mid-Pregnancy Ultrasonographic Cervical Length Measurement (A Predictor of Mode and Timing of Delivery): An Observational Study. J Family Reprod Health 2018;12: 23–26.