| The assessment of normal early pregnancy by transvaginal color Doppler ultrasonography. | |
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MedLine Citation:
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PMID: 8478442 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Transvaginal color Doppler was performed in 198 volunteer pregnant women whose menstrual age ranged from the fifth to the twelfth week. In all patients an attempt was made to obtain signals from both uterine arteries, peritrophoblastic/retroplacental vessels, umbilical arteries, fetal aorta, intracranial vessels, and corpus luteum flow. With the combination of color and pulsed Doppler transvaginal sonography, detection of vascular structures was greatly facilitated and the amount of time for examination significantly reduced. Flow velocity waveforms were measured and results were analyzed by calculation of the Resistance Index. During the early stage of pregnancy, we were able to locate both uterine arteries in all cases and continuous diastolic shift signal was found. Flow in the peritrophoblastic/retroplacental area was observed with an overall success rate of 94%. Blood flow in the umbilical artery and fetal aorta was visualized by color Doppler starting from the seventh week. Intracranial blood flow could be visualized starting from the tenth week in some cases. Diastolic flow in these vessels was detectable starting from the twelfth week. Corpus luteum flow was found in 148 cases (75%) and the Resistance Index decreased as pregnancy progressed. |
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Authors:
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A Kurjak; G Crvenkovic; A Salihagic; I Zalud; M Miljan |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of clinical ultrasound : JCU Volume: 21 ISSN: 0091-2751 ISO Abbreviation: J Clin Ultrasound Publication Date: 1993 Jan |
Date Detail:
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Created Date: 1993-05-25 Completed Date: 1993-05-25 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0401663 Medline TA: J Clin Ultrasound Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 3-8 Citation Subset: IM |
Affiliation:
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Ultrasonic Institute, University of Zagreb, Croatia. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Arteries Blood Flow Velocity Cerebrovascular Circulation Color Corpus Luteum / blood supply, physiology, ultrasonography Female Fetal Blood / physiology, ultrasonography* Humans Placenta / blood supply, physiology, ultrasonography Pregnancy Pregnancy Trimester, First Ultrasonography, Prenatal / methods* Umbilical Arteries / physiology, ultrasonography Uterus / blood supply, physiology, ultrasonography Vagina Vascular Resistance |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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