| Three-dimensional ultrasound assessment of the cervix for predicting time to spontaneous onset of labor and time to delivery in prolonged pregnancy. | |
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MedLine Citation:
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PMID: 16817172 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: To determine whether three-dimensional (3D) ultrasound including power Doppler examination of the cervix is useful for predicting time to spontaneous onset of labor or time to delivery in prolonged pregnancy. METHODS: A prospective study was conducted in 60 women who went into spontaneous labor. All underwent transvaginal 3D power Doppler ultrasound examination of the cervix immediately before a prolonged-pregnancy check-up at > or = 41 + 5 gestational weeks. Univariate and multivariate logistic regression analysis was used to determine which of the following variables predicted spontaneous onset of labor > 24 h and > 48 h and vaginal delivery > 48 h and > 60 h: length, anteroposterior (AP) diameter and width of the cervix and of any cervical funneling; cervical volume (cm3); vascularization index (VI); flow index (FI); vascularization flow index (VFI); parity; and Bishop score. Multivariate logistic regression analysis was carried out both with and without Bishop score as a predictive variable. Receiver-operating characteristics (ROC) curves were used to describe the diagnostic performance of the tests. RESULTS: The areas under the ROC curves for Bishop score, cervical length, and logistic regression models did not differ significantly (areas ranging from 0.72 to 0.82). If Bishop score was not included in the logistic regression model, cervical length, VI and FI independently predicted delivery > 48 h, the likelihood increasing with increasing cervical length, decreasing VI and increasing FI. CONCLUSIONS: In prolonged pregnancy cervical vascularization as estimated by 3D power Doppler ultrasound is related to time to delivery > 48 h, but the likelihood of delivery > 48 h can be predicted equally well using Bishop score alone or sonographic cervical length alone. |
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Authors:
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L Rovas; P Sladkevicius; E Strobel; F De Smet; B De Moor; L Valentin |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology Volume: 28 ISSN: 0960-7692 ISO Abbreviation: Ultrasound Obstet Gynecol Publication Date: 2006 Sep |
Date Detail:
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Created Date: 2006-08-31 Completed Date: 2007-08-09 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9108340 Medline TA: Ultrasound Obstet Gynecol Country: England |
Other Details:
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Languages: eng Pagination: 306-11 Citation Subset: IM |
Copyright Information:
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Copyright 2006 ISUOG. Published by John Wiley & Sons, Ltd. |
Affiliation:
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Obstetric, Gynecological and Prenatal Ultrasound Research Unit, Department of Clinical Sciences, Lund University, Malmö University Hospital, Malmö, Sweden. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Cervical Ripening / physiology Cervix Uteri / blood supply*, physiology, ultrasonography Female Humans Imaging, Three-Dimensional* Labor Onset / physiology* Logistic Models Predictive Value of Tests Pregnancy Pregnancy, Prolonged / ultrasonography* Prospective Studies ROC Curve Time Factors Ultrasonography, Doppler / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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