| Progressive cervical length changes versus single cervical length measurement by transvaginal ultrasound for prediction of preterm delivery. | |
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MedLine Citation:
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PMID: 17664877 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: To evaluate cervical length changes as predictors of preterm delivery. METHODS: Two hundred and fifty-seven pregnant women underwent transvaginal ultrasound examination at 16 and 24 weeks of gestation. Cervical length was measured and the difference between the 2 measurements was calculated. The sensitivity, specificity, positive predictive value and negative predictive value of cervical length and cervical length changes were calculated and these methods were compared by receiver-operating characteristic (ROC) curve analysis. RESULTS: Preterm delivery (before 37 weeks of gestation) occurred in 19 patients (7.4%). The mean cervical length was shorter in the preterm group, the area under the ROC curve for prediction of preterm delivery was 0.914, ultrasound had a sensitivity of 84.2% to predict preterm delivery with a false-positive rate of 18.5%, and the relative risk was 4.56 at the 34.3-mm cutoff value at 24 weeks of gestation. In contrast, a cervical length change on transvaginal ultrasound had a sensitivity of 73.3% to predict preterm delivery with a false-positive rate of 18.1%, and the relative risk was 4.08 at the 6.6-mm cutoff value. CONCLUSION: A single cervical length measurement obtained at 24 weeks of gestation can predict preterm delivery as accurately as cervical length change. |
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Authors:
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Talat Umut Kutlu Dilek; Gurkan Yazici; Ayfer Gurbuz; Bahar Tasdelen; Sitki Gulhan; Burcu Dilek; Saffet Dilek |
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Publication Detail:
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Type: Evaluation Studies; Journal Article Date: 2007-07-27 |
Journal Detail:
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Title: Gynecologic and obstetric investigation Volume: 64 ISSN: 1423-002X ISO Abbreviation: Gynecol. Obstet. Invest. Publication Date: 2007 |
Date Detail:
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Created Date: 2007-11-12 Completed Date: 2007-12-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7900587 Medline TA: Gynecol Obstet Invest Country: Switzerland |
Other Details:
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Languages: eng Pagination: 175-9 Citation Subset: IM |
Copyright Information:
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2007 S. Karger AG, Basel |
Affiliation:
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Department of Obstetrics and Gynecology, Mersin University School of Medicine, Mersin, Turkey. umutdilek@gmail.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Cervix Uteri / ultrasonography* Female Humans Obstetric Labor, Premature / ultrasonography* Predictive Value of Tests Pregnancy Pregnancy Trimester, Second ROC Curve Sensitivity and Specificity Ultrasonography, Prenatal* |
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