| Correlation between the degree of left subclavian artery stenosis and the left vertebral artery waveform by pulse Doppler ultrasonography. | |
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MedLine Citation:
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PMID: 21051885 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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BACKGROUND: Development of retrograde blood flow may be observed in the vertebral artery and is associated with progressive ipsilateral proximal subclavian or innominate artery stenosis. The subclavian steal phenomenon is more prevalent in the left subclavian artery (LSA). The purpose of this study was to analyze the correlation between the degree of LSA stenosis and pulse Doppler waveforms of the left vertebral artery (LVA). METHODS: A retrospective analysis of LVA waveforms was performed in 22 cases with LSA proximal stenosis before the origin of the LVA in conventional angiograms. The degree of LSA stenosis was classified into 5 groups (<50, 50-59, 60-69, 70-89, 90-100%). Pulse Doppler waveforms of the LVA were also classified into 5 subtypes depending on the depth of the mid-systolic notch representing retrograde blood flow (normal, mid-systolic notch, retrograde flow smaller than antegrade flow, retrograde flow larger than antegrade flow, retrograde flow without antegrade flow). RESULTS: A statistically significant correlation (R(2) = 0.646, p < 0.0001) was found between the degree of LSA stenosis and the LVA waveform. CONCLUSIONS: The pattern analysis of LVA pulse Doppler waveforms seems to be useful in determining the degree of LSA stenosis. |
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Authors:
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Hirokuni Sakima; Yoshiyuki Wakugawa; Katsunori Isa; Masahiro Yasaka; Toshiyasu Ogata; Masaki Saitoh; Hiroshi Shimada; Kotaro Yasumori; Tooru Inoue; Yusuke Ohya; Yasushi Okada |
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Publication Detail:
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Type: Journal Article Date: 2010-11-03 |
Journal Detail:
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Title: Cerebrovascular diseases (Basel, Switzerland) Volume: 31 ISSN: 1421-9786 ISO Abbreviation: Cerebrovasc. Dis. Publication Date: 2011 |
Date Detail:
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Created Date: 2010-12-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9100851 Medline TA: Cerebrovasc Dis Country: Switzerland |
Other Details:
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Languages: eng Pagination: 64-7 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 S. Karger AG, Basel. |
Affiliation:
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Department of Cerebrovascular Disease, Clinical Research Institute, National Kyushu Medical Center, Fukuoka, Japan. sakima51@gmail.com |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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