EVALUATION OF THE CERVICAL LENGTH AT 19-23 WEEK 6 DAY’S GESTATION IN 3500 PREGNANCIES BY TRANSVAGINAL ULTRASOUND

Vũ Bá Quyết, Nguyễn Xuân Hợi, Đào Thị Hoa, Đinh Bích Thủy, Nguyễn Thị Huyền Linh

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Abstract

Objective: Evaluation of thecervical lengthin 3500pregnancies at 19-23-week 6 day’ gestationbytransvaginal ultrasound. Subject and methods: A descriptive cross-sectional study involved 3500pregnancies at 19-23week 6 day’ gestation meeting the inclusive and exclusive criteria was implemented at Outpatient Department of National Hospital of Obstetrics and Gynecology (NHOG) from 02/2019 to 03/2021. Participants were clinically examined, underwent fetal ultrasound examination, and the cervical length was measured and collected. Results: The mean of cervical length of 3500 participants at 19-23week 6 day’ gestation was 35,8±5,5mm, with nosignificant difference among weeks. In the previousterm birth group, the mean of cervical length was 36,5±5,7mm, while in the group with previous preterm birth, the datum was35,2±6,3 mm. This difference was statistically significant with P<0,05. The risk of preterm birth in the group with cervical length ≤25mm was 4 times higher than that in the normal group (OR=4; 95% CI:2,2-7,6). The ratio of participants with short cervical length amounted to 1,9% (65 people). Conclusion: The mean of cervical length at 19-23week’ gestation was 35,8±5,5mmThe cervical length in group with previous preterm birth was shorter than that in the term birth group with a statistically significant difference. The amount of cervical length ≤25mm accounted for 1,9%.

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References

1. WHO (2018), Preterm birth, www.who.int.
2. Liu L., Oza S., Hogan D., et al. (2016). Global, regional, and national causes of under-5 mortality in 2000-15: an updated systematic analysis with implications for the Sustainable Development Goals. Lancet, 388(10063), 3027–3035.
3. Kenneth Lim and Joan M. Crane K.B. (2018). No. 257-Ultrasonographic Cervical Length Assessment in Predicting Preterm Birth in Singleton Pregnancies. Journal of Obstetrics and Gynaecology Canada, 40(2), 151–164.
4. Neoma Withanawasam S.T. (2019). The shortened cervix in pregnancy: Investigation and current management recommendations for primary caregivers. Australian Journal of General Practice, 48(3), 12–15.
5. Fonseca EB, Celik E, Parra M, Singh M, Nicolaides KH. (2007). Progesterone and the risk of preterm birth among women with a short cervix. The New England journal of medicine, 357(5), 462-9.
6. Blencowe H., Cousens S., Oestergaard M.Z., et al. (2012). National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications. Lancet, 379(9832), 2162–2172.
7. FIGO COMMITTEE REPORT (2015). Best practice in maternal–fetal medicine. International Journal of Gynecology and Obstetrics, 128, 80–82.
8. Nguyễn Công Định (2009), Nghiên cứu đo độ dài cổ tử cung ở phụ nữ có thai 20 - 24 tuần bằng phương pháp siêu âm tầng sinh môn, Luận văn Thạc sỹ Y học, Đại học Y Hà Nội.
9. Buck J.N., Orzechowski K.M., and Berghella V. (2017). Racial disparities in cervical length for prediction of preterm birth in a low risk population. The Journal of Maternal-Fetal & Neonatal Medicine, 30(15), 1851–1854.