Department of Obstetrics and Gynecology, Faculty of Medicine, Suez Canal University, Ismailia, Egypt.
Int J Gynaecol Obstet. 2022 Feb;156(2):304-308. doi: 10.1002/ijgo.13629. Epub 2021 Feb 23.
To evaluate the predictive role of the uterocervical angle and the cervical length in preterm birth.
This was cross-sectional analytical study, recruiting 167 women at high-risk for preterm birth (delivery before 37 weeks of pregnancy). They had transvaginal ultrasound for evaluation of the uterocervical angle and the cervical length between at 30 and 32, 32 and 34, and 34 and 36 weeks of pregnancy. The primary outcome was to determine the predictive role of the uterocervical angle and the cervical length in preterm birth.
The mean uterocervical angle was significantly greater in those who delivered preterm (115.4° ± 9.1° versus 101.1° ± 8.3°, p < 0.001). The cervical length was insignificantly shorter in the same group (27.9 ± 4.0 and 29.1 ± 4.1 mm, respectively, p = 0.067). A uterocervical angle of 105° or more predicted preterm birth with sensitivity and specificity of 86.1% and 60.4%, respectively. A cervical length of 25 mm or less had sensitivity and specificity of 27.8% and 85.8%, respectively.
A uterocervical angle greater than 105° poses a high risk for preterm deliveries. It provides a higher diagnostic performance in high-risk patients than cervical canal length measurement.
评估子宫颈角和宫颈长度在早产预测中的作用。
这是一项横断面分析研究，共招募了 167 名有早产高危因素的妇女（分娩发生在 37 周妊娠之前）。在妊娠 30 至 32 周、32 至 34 周和 34 至 36 周时，对这些妇女进行经阴道超声检查，以评估子宫颈角和宫颈长度。主要结局是确定子宫颈角和宫颈长度在早产预测中的作用。
早产组的子宫颈角明显大于未早产组（115.4°±9.1°比 101.1°±8.3°，p<0.001）。同一组的宫颈长度明显缩短（分别为 27.9±4.0 和 29.1±4.1mm，p=0.067）。子宫颈角为 105°或更大时，早产的敏感性和特异性分别为 86.1%和 60.4%。宫颈长度为 25mm 或更短时，敏感性和特异性分别为 27.8%和 85.8%。
子宫颈角大于 105°提示早产风险高。与宫颈管长度测量相比，它在高危患者中具有更高的诊断性能。
