| Diagnosis of placenta previa by transvaginal sonographic screening at 12-16 weeks in a nonselected population. | |
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MedLine Citation:
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PMID: 9052586 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To evaluate the clinical significance of placenta previa at 12-16 weeks' gestation found by transvaginal sonographic screening. METHODS: An unselected population of 6428 pregnant women was scanned by transvaginal sonography during 1993-1994 to assess the gestational age and to diagnose major fetal anomalies. The location of the placenta was also recorded systematically. If the edge of the placenta extended over the internal cervical os, this distance was measured with electronic calipers. RESULTS: In 156 of 6428 patients (2.4%), the placental edge extended 15 mm or more over the internal cervical os at 12-16 weeks' gestation. Eight of these patients had placenta previa at delivery. Using this criterion at screening, two cases of placenta previa at delivery were missed. The frequency of placenta previa at delivery in this nonselected population was ten of 6428 (0.16%). CONCLUSIONS: The likelihood of placenta previa at delivery is 5.1% (95% confidence interval 2.2, 9.9) if the placenta extends at least 15 mm over the internal cervical os at 12-16 weeks' gestation. |
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Authors:
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P Taipale; V Hiilesmaa; P Ylöstalo |
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Publication Detail:
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Type: Clinical Trial; Journal Article |
Journal Detail:
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Title: Obstetrics and gynecology Volume: 89 ISSN: 0029-7844 ISO Abbreviation: Obstet Gynecol Publication Date: 1997 Mar |
Date Detail:
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Created Date: 1997-03-20 Completed Date: 1997-03-20 Revised Date: 2009-10-26 |
Medline Journal Info:
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Nlm Unique ID: 0401101 Medline TA: Obstet Gynecol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 364-7 Citation Subset: AIM; IM |
Affiliation:
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Department of Obstetrics and Gynecology, Jorvi Hospital, Espoo, Finland. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Confidence Intervals Female Humans Placenta Previa / ultrasonography* Pregnancy Pregnancy Trimester, First Pregnancy Trimester, Second Ultrasonography, Prenatal* / methods Vagina |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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