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BMC Neurology
Published in: BMC Neurology 1/2019

Open Access 01-12-2019 | Magnetic Resonance Imaging | Research article

Risk factors outperform intracranial large artery stenosis predicting unfavorable outcomes in patients with stroke

Authors: K. C. Chang, I. C. Chuang, Y. C. Huang, C. Y. Wu, W. C. Lin, Y. L. Kuo, T. H. Lee, S. J. Ryu

Published in: BMC Neurology | Issue 1/2019

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Abstract

Background

This study examined how intracranial large artery stenosis (ILAS), symptomatic and asymptomatic ILAS, and risk factors affect unfavorable outcome events after medical treatment in routine clinical practice.

Methods

This was a 24-month prospective observational study of consecutively recruited stroke patients. All participants underwent magnetic resonance angiography, and their clinical characteristics were assessed. Outcome events were vascular outcome, recurrent stroke, and death. Cox regression analyses were performed to identify potential factors associated with an unfavorable outcome, which included demographic and clinical characteristics, the risk factors, and stenosis status.

Results

The analysis included 686 patients; among them, 371 were assessed as ILAS negative, 231 as symptomatic ILAS, and 84 as asymptomatic ILAS. Body mass index (p < .05), hypertension (p = .01), and old infarction (p = .047) were factors relating to vascular outcomes. Hypertension was the only factor for recurrent stroke (p = .035). Poor glomerular filtration rate (< 30 mL/min/1.73 m2) (p = .011) and baseline National Institutes of Health Stroke Scale scores (p < .001) were significant predictors of death.

Conclusions

This study extended previous results from clinical trials to a community-based cohort study by concurrently looking at the presence/absence of stenosis and a symptomatic/asymptomatic stenotic artery. Substantiated risk factors rather than the stenosis status were predominant determinants of adverse outcome. Although the degree of stenosis is often an indicator for treatment, we suggest risk factors, such as hypertension and renal dysfunction, should be monitored and intensively treated.
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Metadata
Title
Risk factors outperform intracranial large artery stenosis predicting unfavorable outcomes in patients with stroke
Authors
K. C. Chang
I. C. Chuang
Y. C. Huang
C. Y. Wu
W. C. Lin
Y. L. Kuo
T. H. Lee
S. J. Ryu
Publication date
01-12-2019
Publisher
BioMed Central
Published in
BMC Neurology / Issue 1/2019
Electronic ISSN: 1471-2377
DOI
https://doi.org/10.1186/s12883-019-1408-1

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