Dubossarska, Yulianna and Petrenko, Yevhen (2025) Determination of the uterocervical angle as a marker of spontaneous preterm labor. The 2nd International scientific and practical conference “Innovations of modern science and education” (October 29-31, 2025). pp. 38-41.
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Abstract
The ability to identify women at risk of spontaneous preterm birth (sPTB) is limited and includes a detailed history, transvaginal ultrasound, or symptoms such as preterm contractions. Clinical cervical function can be described through cervical structure integrity as is displayed through ultrasonographic cervical length (CL) and uterocervical angle (UCA) [1, p. 376.e1]. The role of universal cervical length screening to predict preterm birth in general obstetric population is contentious; those guidelines that are in favor, recommend screening in the midtrimester between 18 and 24 weeks gestation. Where cervical length is measured, however, a cervical length of <25 mm is universally agreed upon as the threshold for intervention, with less than 24 weeks gestation suggested most commonly as the gestational limit where this measurement should be considered abnormal. There is strong agreement that pregnancies at increased risk of preterm birth should undergo cervical length measurement preferably with transvaginal ultrasound [2, p. 934]. The 3D geometry of the cervix and the UCA has an important effect on the load distribution and stretch pattern within the internal os. Large anatomical changes occur with fetal growth and these changes are associated with changes in CL, cervical volume, and UCA. A better understanding of relationships between anatomical geometry and cervical loading has direct clinical relevance. Modification of the UCA was postulated to be the mechanism of preterm birth prevention for the Arabin pessary in clinical trials [3, p. 1514] A wide, or obtuse, UCA lends a more direct, linear outlet of uterine contents onto the cervix. A narrower, or acute, UCA supports an anatomical geometry that would exert less direct force on the internal os, which may be protective from cervical deformation [1, p. 376.e1].
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | spontaneous preterm birth, transvaginal ultrasound, cervical length, uterocervical angle, predictive markers. |
| Subjects: | Obstetrics Gynecology |
| Divisions: | Faculty of Postgraduate Education > Department of Obstetrics, Gynecology and Perinatology FPE |
| Depositing User: | Анастасия Жигар |
| Date Deposited: | 10 Nov 2025 11:59 |
| Last Modified: | 10 Nov 2025 11:59 |
| URI: | http://repo.dma.dp.ua/id/eprint/9630 |
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