| Reliability of carotid doppler performed in a dedicated stroke prevention clinic. | |
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MedLine Citation:
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PMID: 16225174 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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INTRODUCTION: Doppler ultrasound (DUS) is used as a screening tool to assess internal carotid artery (ICA) disease. Recent reports suggest that the DUS may be inaccurate in over 28% of patients. We sought to evaluate the accuracy of DUS, when performed in a dedicated stroke prevention clinic (SPC). METHODS: We retrospectively reviewed the charts of patients who had a DUS performed in our SPC, followed by conventional cerebral angiography. Three groups of patients were defined. Group 1 had DUS measured ICA stenosis of >50%; Group II had a DUS measured ICA stenosis of <50%; Group III had complete ICA occlusion on DUS. RESULTS: Sixty-seven patients (69 arteries) were included in the study. There were 45 patients in Group I and based on the findings of cerebral angiography, carotid endarterectomy was considered inappropriate in only one patient--a misclassification rate of 2.2% (95% CI: 0 - 6.5%). Group II consisted of 19 patients and on cerebral angiography, none of these patients had a stenosis of >50%--a misclassification rate of 0%. Group III consisted of five patients in whom DUS showed complete ICA occlusion. The angiogram confirmed the occlusion in all five patients--a misclassification rate of 0%. Overall, misclassification rate was 1.45% (95% CI: 0 - 4.3%). CONCLUSIONS: Doppler ultrasound when performed in a stroke prevention clinic (SPC), has a high accuracy in measuring ICA stenosis of >50%. Doppler ultrasound is reliable in detecting complete ICA occlusion and finally DUS is a reliable screening tool to rule out clinically significant ICA stenosis. |
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Authors:
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N Dean; H Lari; M Saqqur; N Amir; K Khan; M Mouradian; Abdul Salam; H Romanchuk; A Shuaib |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques Volume: 32 ISSN: 0317-1671 ISO Abbreviation: Can J Neurol Sci Publication Date: 2005 Aug |
Date Detail:
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Created Date: 2005-10-17 Completed Date: 2005-11-30 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0415227 Medline TA: Can J Neurol Sci Country: Canada |
Other Details:
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Languages: eng Pagination: 327-31 Citation Subset: IM |
Affiliation:
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Division of Neurology, The Al Owen and Family Stroke Prevention Clinic, University of Alberta, Edmonton, Alberta, Canada. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Carotid Arteries / radiography, ultrasonography* Carotid Stenosis / radiography, ultrasonography* Cerebral Angiography Diagnostic Errors Female Humans Male Middle Aged Outpatient Clinics, Hospital Reproducibility of Results Retrospective Studies Stroke / prevention & control* Ultrasonography, Doppler |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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