Document Detail

Reliability of carotid doppler performed in a dedicated stroke prevention clinic.
MedLine Citation:
PMID:  16225174     Owner:  NLM     Status:  MEDLINE    
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.
N Dean; H Lari; M Saqqur; N Amir; K Khan; M Mouradian; Abdul Salam; H Romanchuk; A Shuaib
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Publication Detail:
Type:  Journal Article    
Journal Detail:
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:
Created Date:  2005-10-17     Completed Date:  2005-11-30     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0415227     Medline TA:  Can J Neurol Sci     Country:  Canada    
Other Details:
Languages:  eng     Pagination:  327-31     Citation Subset:  IM    
Division of Neurology, The Al Owen and Family Stroke Prevention Clinic, University of Alberta, Edmonton, Alberta, Canada.
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MeSH Terms
Carotid Arteries / radiography,  ultrasonography*
Carotid Stenosis / radiography,  ultrasonography*
Cerebral Angiography
Diagnostic Errors
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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