Document Detail


Prediction of Silent Ischemic Lesions after Carotid Artery Stenting Using Virtual Histology Intravascular Ultrasound.
MedLine Citation:
PMID:  21709408     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Background: A major concern with carotid artery stenting (CAS) is the potential for cerebral embolism. The purpose of this study was to determine whether virtual histology intravascular ultrasound (VH-IVUS) can predict the risk of a silent ischemic lesion after CAS. Methods: We performed CAS in 45 patients with carotid stenosis. Before CAS, we assessed plaque characteristics by VH-IVUS. We also performed diffusion-weighted magnetic resonance imaging of the brain before and after CAS to detect newly appearing ipsilateral silent ischemic lesions (NISIL). Results: In the patient group that was positive for NISIL (P group: n = 18), the relative fibrofatty (FF) area identified by VH-IVUS in 5 cross-sections including the most stenotic lesion was significantly larger than that in areas of the NISIL-negative group (N group: n = 27; 32.7 ± 13.2 and 18.3 ± 9.8%, respectively; p < 0.001). The relative fibrous area was significantly lower in the P group than in the N group (59.2 ± 9.5 and 74.6 ± 9.1%, respectively; p < 0.001). There were no differences in the relative dense calcium and necrotic core areas between the P and N groups. From the analysis of receiver operating characteristic curves, most reliable cutoff values for predicting NISIL were a relative FF area of 30% in the most stenotic lesion. In multivariate logistic regression analysis, the relative FF area was an independent predictor of NISIL (p = 0.005). Conclusions: Quantitative tissue characterization of atherosclerotic lesions of carotid arteries using VH-IVUS was useful to predict NISIL after CAS. However, the positive predictive value determined by VH-IVUS was not superior to that determined by a noninvasive method.
Authors:
Kiyofumi Yamada; Shinichi Yoshimura; Masanori Kawasaki; Yukiko Enomoto; Kyohei Takano; Takahiko Asano; Shinya Minatoguchi; Toru Iwama
Related Documents :
19463468 - A randomized optical coherence tomography study of coronary stent strut coverage and lu...
18754968 - Percutaneous treatment of a coronary aneurysm by stent graft and drug-eluting stent imp...
16893698 - Effect of everolimus-eluting stents in different vessel sizes (from the pooled future i...
15924588 - Clinical experience in coronary stenting with the vivant z stent.
14743928 - Direct repair of a blisterlike aneurysm on the internal carotid artery with vascular cl...
9597418 - Prevalence and relevance of a septal diastolic notch during dobutamine stress echocardi...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-6-28
Journal Detail:
Title:  Cerebrovascular diseases (Basel, Switzerland)     Volume:  32     ISSN:  1421-9786     ISO Abbreviation:  -     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-6-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9100851     Medline TA:  Cerebrovasc Dis     Country:  -    
Other Details:
Languages:  ENG     Pagination:  106-113     Citation Subset:  -    
Copyright Information:
Copyright © 2011 S. Karger AG, Basel.
Affiliation:
Department of Neurosurgery, Gifu University Graduate School of Medicine, Gifu, Japan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

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


Previous Document:  Blood C-Reactive Protein Concentration with ABCD Is a Better Prognostic Tool than ABCD(2) Alone.
Next Document:  Plasma C3 and C3a Levels in Cryptogenic and Large-Vessel Disease Stroke: Associations with Outcome.