| Transvaginal sonographic cervical length changes during normal pregnancy. | |
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MedLine Citation:
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PMID: 11883533 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To examine the relationship between cervical length and gestational age in normal pregnancy in nulliparous versus parous women. METHODS: We studied a cross-sectional sample of 321 pregnant women, including 185 nulliparous and 136 multiparous women. The inclusion criteria were sonographic confirmation of gestational age within the 12th week, the absence of any risk factors for preterm birth, and uncomplicated pregnancy with expected delivery during the 38th to 42nd weeks. Cervical length was measured in a straight line if the cervix did not show any curvature; in the presence of cervical curvature, the measurement was broken down into 2 or more segments. RESULTS: There was a relationship between gestational age and cervical length, which could be described with a linear function (R = 0.92; R2 = 0.85; P < .001). Moreover, there was no statistically significant difference between multiparous and nulliparous women. CONCLUSIONS: Our study shows that cervical length is comparable in nulliparous and multiparous women throughout pregnancy. In both groups, it actually shows a progressive, linear reduction between the 10th and 40th weeks. Reference ranges constructed for the whole gestational period might be more useful than a single cut-off value for more efficient prevention and management of preterm birth. |
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Authors:
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Dandolo Gramellini; Stefania Fieni; Enzo Molina; Roberto Berretta; Eugenio Vadora |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine Volume: 21 ISSN: 0278-4297 ISO Abbreviation: J Ultrasound Med Publication Date: 2002 Mar |
Date Detail:
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Created Date: 2002-03-08 Completed Date: 2002-08-23 Revised Date: 2005-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8211547 Medline TA: J Ultrasound Med Country: United States |
Other Details:
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Languages: eng Pagination: 227-32; quiz 234-5 Citation Subset: IM |
Affiliation:
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Department of Obstetrics, Gynecology, and Neonatology, University of Parma, Italy. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Cervix Uteri
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anatomy & histology,
ultrasonography* Cross-Sectional Studies Female Gestational Age Humans Obstetric Labor, Premature Parity Pregnancy Reference Values Risk Factors Ultrasonography, Prenatal* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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