Document Detail

Detection of microembolic signals using power M-mode Doppler sonography in acute stroke patients with intracranial artery stenosis.
MedLine Citation:
PMID:  18615673     Owner:  NLM     Status:  MEDLINE    
PURPOSE: Microembolic signals (MES) can be detected in a variety of clinical situations using conventional transcranial Doppler (TCD) sonography. We studied the prevalence of positive MESs in acute stroke patients with intracranial artery stenosis using power M-mode Doppler (PMD) sonography and also tested the feasibility of this new technique. METHOD: Thirty-three consecutive acute ischemic stroke or transient ischemic attack patients with intracranial large artery occlusive disease were enrolled. PMD/TCD monitoring for 30 minutes was used for MES detection downstream of the stenotic artery within 1 week after stroke onset. Clinical risk factors in emboli-positive and emboli-negative patients were assessed. RESULTS: MESs were detected in 21% (7/33) of patients. No significant differences were found in clinical risk factors between emboli-positive and emboli-negative patients. CONCLUSION: PMD sonography to detect MESs in acute stroke patients is feasible and may be used in future clinical trials regarding MES detection.
Teng-Yeow Tan; Ting-Yao Chen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of clinical ultrasound : JCU     Volume:  36     ISSN:  1097-0096     ISO Abbreviation:  J Clin Ultrasound     Publication Date:  2008 Sep 
Date Detail:
Created Date:  2008-08-11     Completed Date:  2009-01-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401663     Medline TA:  J Clin Ultrasound     Country:  United States    
Other Details:
Languages:  eng     Pagination:  422-6     Citation Subset:  IM    
Copyright Information:
(c) 2008 Wiley Periodicals, Inc.
Department of Neurology, Cerebrovascular Disease Section, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, 123, Ta-Pei Road, Niao-Sung Hsiang, Kaohsiung 833, Taiwan.
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MeSH Terms
Acute Disease
Aged, 80 and over
Basilar Artery / pathology,  ultrasonography
Brain Ischemia / etiology,  ultrasonography*
Carotid Artery, Internal / pathology,  ultrasonography
Constriction, Pathologic / ultrasonography
Feasibility Studies
Intracranial Arterial Diseases / complications,  ultrasonography*
Intracranial Embolism / complications,  ultrasonography*
Middle Aged
Middle Cerebral Artery / pathology,  ultrasonography
Ultrasonography, Doppler

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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