| Influence of nuchal cord on ductus venosus assessment at 11 to 13 + 6 weeks' gestation. | |
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MedLine Citation:
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PMID: 20104536 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVES: To assess the influence of the presence of nuchal cord (NC) on the evaluation of the fetal ductus venosus flow velocity waveform (DV-FVW). METHODS: This prospective study included 1174 normal non-selected singleton pregnancies between 11 and 13 + 6 weeks' gestation. We recorded the presence or absence of NC around the fetal neck, and assessed its relationship with the qualitative assessment and quantitative measurement of the DV-FVW. RESULTS: We observed NC around the fetal neck in 6.73% of cases and detected reversed flow of the a-wave of the DV-FVW in 2.98% of cases. In the group without NC, 21 of 1095 had reversed flow in the DV-FVW (1.9%; 95% CI, 1.28-3.02), whereas in the group with NC, 14 of 79 had reversed flow in the DV-FVW (17.7%; 95% CI, 16.67-40.35). We found a lower pulsatility index in fetuses without NC in comparison to those with NC (P < 0.001). We also found an association between the presence of NC and an increased occurrence of absent and reversed a-wave of the flow velocity waveforms (P < 0.001). On multivariate logistic regression analysis, a much higher occurrence of reversed DV-FVW a-wave was detected in fetuses with NC and smaller crown-rump length, and a much higher occurrence of absent DV-FVW a-wave was found in fetuses with NC and a higher maternal body mass index. CONCLUSIONS: The presence of NC modifies the sonographic findings in the qualitative and quantitative evaluation of the DV-FVW. |
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Authors:
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W Plasencia; P Lopez; M Esparza; R Garcia; M A Barber; J A Garcia |
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Publication Detail:
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Type: Journal Article |
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: 35 ISSN: 1469-0705 ISO Abbreviation: Ultrasound Obstet Gynecol Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-10 Completed Date: 2010-09-16 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: 263-6 Citation Subset: IM |
Copyright Information:
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(c) 2010 ISUOG. Published by John Wiley & Sons, Ltd. |
Affiliation:
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Fetal Medicine Unit, Department of Obstetrics and Gynecology, Hospital Universitario Materno-Infantil de Canarias, Las Palmas de Gran Canaria, Spain. walterplasencia@mac.com |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Flow Velocity / physiology Female Fetal Heart / physiopathology, ultrasonography* Gestational Age Heart Defects, Congenital / physiopathology, ultrasonography* Humans Laser-Doppler Flowmetry Nuchal Cord / embryology, ultrasonography* Pregnancy Prospective Studies Regional Blood Flow / physiology Ultrasonography, Prenatal |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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