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Association of carotid atherosclerosis and recurrent cerebral infarction in the Chinese population: a meta-analysis.

Authors
  • Liu, Jianping1
  • Zhu, Yun1
  • Wu, Yuhuai1
  • Liu, Yan1
  • Teng, Zhaowei1
  • Hao, Yinglu1
  • 1 Department of Science and Education, Nephrology, Orthopedic and Cardiology, The People's Hospital of Yuxi City, The 6th Affiliated Hospital of Kunming Medical University, Yuxi, Yunan, People's Republic of China. , (China)
Type
Published Article
Journal
Neuropsychiatric Disease and Treatment
Publisher
Dove Medical Press
Publication Date
Jan 01, 2017
Volume
13
Pages
527–533
Identifiers
DOI: 10.2147/NDT.S124386
PMID: 28260898
Source
Medline
Keywords
License
Unknown

Abstract

Stroke, when poor blood flow to the brain results in cell death, is the third leading cause of disability and mortality worldwide, and appears as an unequal distribution in the global population. The cumulative risk of recurrence varies greatly up to 10 years after the first stroke. Carotid atherosclerosis is a major risk factor for stroke. The aim of this study was to investigate and estimate the relationship between carotid atherosclerosis and risk of stroke recurrence in the Chinese population. We performed a systematic review and meta-analysis of randomized controlled trials published from 2000 to 2013, using the following databases: PubMed, Embase, Medline, Wanfang, and the China National Knowledge Infrastructure. The odds ratios with 95% confidence intervals were calculated to examine this strength. A total of 22 studies, including 3,912 patients, 2,506 first-ever cases, and 1,406 recurrent cases, were pooled in this meta-analysis. Our results showed that the frequency of carotid atherosclerosis is higher in recurrent cases than that in the first-ever controls (78.88% vs 59.38%), and the statistical analysis demonstrated significant positive association between carotid atherosclerosis and recurrent cerebral infarction (odds ratio: 2.87; 95% confidence interval: 2.42-3.37; P<0.00001) in a fixed-effect model. No significant heterogeneity was observed across all studies. In conclusion, our results showed that carotid atherosclerosis was associated with increased risk of recurrent stroke. However, further well-designed research with large sample sizes is still needed to identify the clear mechanism.

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