| Duplex ultrasonography of the fetal aorta, umbilical artery, and placental arcuate artery throughout normal human pregnancy. | |
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MedLine Citation:
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PMID: 2660959 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A cross-sectional duplex study of blood flow in the fetal aorta, umbilical artery, and arcuate arteries of 111 normal subjects was performed once at between 20 and 42 weeks gestation. Peak systolic velocity, end-diastolic velocity, mean velocity, and volume flow were measured in the fetal aorta, and systolic to diastolic (S/D) ratios were measured in all three vessels. Velocities show an inverse exponential (Y = Exp [1/X x B + C]) increase with gestational age, reaching a plateau just before term, while S/D ratios in the aorta and umbilical arteries show a linear decrease. Such findings are at variance with some published data. Our results suggest a reduction in fetal placental resistance at term and provide useful data concerning normal fetal and placental circulations. |
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Authors:
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A Cameron; S Nicholson; C Nimrod; J Harder; D Davies; C Dempster; P Garvey |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Canadian Association of Radiologists journal = Journal l'Association canadienne des radiologistes Volume: 40 ISSN: 0846-5371 ISO Abbreviation: Can Assoc Radiol J Publication Date: 1989 Jun |
Date Detail:
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Created Date: 1989-08-08 Completed Date: 1989-08-08 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8812910 Medline TA: Can Assoc Radiol J Country: CANADA |
Other Details:
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Languages: eng Pagination: 145-9 Citation Subset: IM |
Affiliation:
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Department of Obstetrics and Gynecology, University of Calgary, Alberta. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aorta
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embryology,
physiology* Arteries / physiology Blood Flow Velocity Cross-Sectional Studies Female Fetus / physiology* Gestational Age Humans Myocardial Contraction Placenta / blood supply* Pregnancy Prenatal Diagnosis Regional Blood Flow Ultrasonography / methods* Umbilical Arteries / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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