<- Home <- Arhive <- Vol. 6, Issue 1, February 2010



GINECOeu6(1)13-16(2010)
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Ultrasound Cervical Assessment at 18-20 Weeks of Gestation

A. Stănescu, L. Pleş, J. Marin, R. Chiriac


Abstract: The purpose of this study was to determine the mean cervical length in singleton pregnancies between 18 to 20 weeks and also to asses the cut-off length of the cervix as a preterm birth predictor. This is a prospective study in which the cervical length was measured weekly in asymptomatic women with singleton pregnancies with transvaginal ultrasonography. The mean cervical length was assessed for every week of gestation from 18 to 20. The relation between cervical length and spontaneous preterm birth was analyzed using contingency table and linear regression. There were 471 women included in this study. The mean cervical length value was 34.9mm. The preterm delivery (before 36 weeks of gestation) was observed in 12.3% (58/471) of cases and late abortion (before 28 weeks) in 6.8% (32/471). The risk for preterm or miscarriage is inversely related to cervical length; it is the highest under 20 mm cervical length. Funnelling also proved to be a predictive factor preterm delivery or miscarriage. The use of ultrasound assessment of cervical length in the screening prenatal programme may help select more specific the pregnancies in risk for preterm delivery.
Keywords: premature spontaneous birth, transvaginal scan, cervical length assessment

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