Document Detail

Preoperative extracranial carotid artery examination with ultrasonography in patients undergoing coronary artery bypass grafting in Japan.
MedLine Citation:
PMID:  16875309     Owner:  NLM     Status:  MEDLINE    
PURPOSE: We investigated the incidence, degree, and plaque characteristics of extracranial carotid stenosis with carotid ultrasonography (CUS) in patients undergoing coronary artery bypass grafting (CABG). MATERIALS AND METHODS: Preoperative CUS was performed on 221 patients (442 carotid arteries) undergoing CABG. The degree of extracranial carotid stenosis was calculated based on the area stenosis, and it was classified into six grades as follows: grade (G) 0, G1 (1%-29%), G2 (30%-49%), G3 (50%-69%), G4 (70%-99%), and G5 (occlusion). RESULTS: The incidence of G4 was 4.1% and G5 1.6%. There were 48 arteries rated G3 or G4. Hypoechoic plaque was detected in 28 of the 48 arteries (58%), and heterogeneous plaque was detected in 37 arteries (73%). Ulcerative plaque was detected in 27 arteries (56%); when comparing the G3 and G4 groups, ulcerative plaque was found more frequently in G4 than in G3 (14/18 vs 13/30 arteries, P < 0.02). CONCLUSION: Our study demonstrated that patients undergoing CABG with extracranial severe carotid stenosis tend to have heterogeneous, hypoechoic, and ulcerative plaque. We believe that preoperative CUS should be used to evaluate the plaque characteristics of extracranial carotid stenosis.
Syouichi Arai; Hidetsuna Utsunomiya; Tadashi Tashiro; Kiyokazu Ishida; Masatoshi Okazaki
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Radiation medicine     Volume:  24     ISSN:  0288-2043     ISO Abbreviation:  Radiat Med     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-07-31     Completed Date:  2006-08-11     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8412264     Medline TA:  Radiat Med     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  210-6     Citation Subset:  IM    
Department of Neuroradiology, Hakujyuji Hospital, 3-2-1 Ishimaru, Nishi-ku, Fukuoka 814-0180, Japan.
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MeSH Terms
Aged, 80 and over
Carotid Arteries / ultrasonography*
Carotid Stenosis / ultrasonography*
Coronary Artery Bypass*
Middle Aged

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