| Autor: |
Ksenia Olisova, Chan-Yu Sung, Eric C. Lussier, Tung-Yao Chang |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Taiwanese Journal of Obstetrics & Gynecology, Vol 60, Iss 5, Pp 836-839 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
1028-4559 |
| DOI: |
10.1016/j.tjog.2021.07.010 |
| Popis: |
Objective: Our study aimed to build a normal reference range for routine mid-pregnancy cervical length screening for preterm birth (PTB) based on a large cross-section of Taiwanese singleton pregnancies. Based on our reference range findings, we aim to develop a Z-score and centile calculator. Materials and methods: We performed a retrospective analysis of the routine mid-trimester cervical length measurement in low-risk singleton pregnancies (without known abnormal growth or karyotype, congenital malformation, history of preterm birth due to preterm premature rupture of the membranes, or history of cervical cerclage treatment). From November 2008 to June 2018, the cervical lengths of 51,644 Taiwanese low-risk pregnant women were measured by experienced sonographers via transvaginal ultrasound during second trimester fetal anatomical screening at 20–24 weeks of gestation. Kolmogorov–Smirnov test was used to assess the normality of the distribution. Cole's lambda, mu, sigma (LMS) method was applied to build mid-pregnancy cervical length reference range and calculate Z-scores. Cut-off values of 2.5, 2.0 and 1.5 cm were used to evaluate the number of pregnancies considered high-risk for PTB. Results: Kolmogorov–Smirnov test showed that the cervical length measurements did not follow a normal distribution ( |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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