Document Detail

The diagnostic accuracy of duplex ultrasonography for evaluating carotid bifurcation.
MedLine Citation:
PMID:  8053509     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: In many medical centers the standard preoperative study for patients undergoing carotid endarterectomy is four-vessel carotid arteriography, but duplex scanning of the carotid bifurcation is also reported to be highly accurate for detecting stenotic or occluded carotid arteries. METHODS: The diagnostic accuracy of duplex ultrasonography was evaluated in a study of 774 carotid bifurcations, in 400 patients comparing the degree of predicted internal carotid artery (ICA) stenosis found using that technique, with that found by contrast arteriography. Agreement between the predicted degree of ICA stenosis and the arteriographic measurement was evaluated using the Spearman rank order correlation. Accuracy statistics for duplex scanning as a diagnostic modality were assessed using 2 x 2 tables. RESULTS: The Spearman rank order correlation coefficient was 0.74 (P = 0) for the symptomatic group, 0.65 (P = 0) for the asymptomatic group, and 0.68 (P = 0) for the total group. The accuracy of duplex ultrasonography for detecting all grades of ICA stenosis ranged from 80% to 97%. CONCLUSIONS: Duplex ultrasonography of the carotid bifurcation is a reliable diagnostic tool and can be used as the sole preoperative study for selected patients with extracranial cerebrovascular disease. Our current algorithm is discussed in conjunction with a critical analysis of this large database.
J L Ballard; K Fleig; M De Lange; J D Killeen
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  American journal of surgery     Volume:  168     ISSN:  0002-9610     ISO Abbreviation:  Am. J. Surg.     Publication Date:  1994 Aug 
Date Detail:
Created Date:  1994-09-08     Completed Date:  1994-09-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370473     Medline TA:  Am J Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  123-6; discussion 130     Citation Subset:  AIM; IM    
Division of Vascular Surgery, Loma Linda University Medical Center, California 92354.
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MeSH Terms
Carotid Artery, Internal / radiography,  surgery,  ultrasonography
Carotid Stenosis / radiography,  surgery,  ultrasonography*
Cerebral Angiography
Predictive Value of Tests
Preoperative Care
Reproducibility of Results
Retrospective Studies
Sensitivity and Specificity

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

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