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Outcomes after stenting for symptomatic intracranial arterial stenosis: a systematic review and meta-analysis

  • Tao Wang
  • Kun Yang
  • Jichang Luo
  • Peng Gao
  • Yan Ma
  • Yabing Wang
  • Long Li
  • Yiran Liu
  • Yao Feng
  • Xue Wang
  • Liqun JiaoEmail author
Review
  • 101 Downloads

Abstract

Background

Stenting is a common endovascular therapy for symptomatic intracranial arterial stenosis (ICAS). We sought to update the evaluation of global short-term safety and long-term efficacy outcomes after stenting for symptomatic ICAS and explore their distributional characteristics.

Methods

Major databases including Cochrane Library, MEDLINE, EMBASE were systematically searched from January 1st, 2005, for RCTs and observational studies which reported short- and long-term outcomes after stenting for symptomatic ICAS. Each outcome was pooled with meta-analysis and the impacts of study location, publication time, and other population characteristics were further assessed by the univariate and multivariate Poisson regression analyses.

Results

A total of 8408 patients were identified in 92 studies from 16 countries across five WHO regions. The estimated rate of short-term stroke or death was 6.68% (95% CI 5.60–8.36%), and the rate of long-term stroke or death was 4.43% (95% CI 2.61–6.60%). After adjustment of age, sex, study location, preprocedual stenosis, publication period and study design, multivariate regression analysis showed that the rate of short-term stroke or death was different between Western and Eastern countries (10.27% versus 5.52%, p = 0.018). The rates of short-term, stroke, ischemic stroke and long-term death were also significantly higher in Western compared to Eastern countries.

Conclusion

This systematic review provided the worldwide profile of short- and long-term outcomes of stenting for symptomatic ICAS. The generally acceptable outcomes indicate that stenting may still be feasible in selected patients. Regional disparity calls for more cautious decisions and future studies.

Keywords

Intracranial arterial stenosis Outcomes Stenting Systematic review Meta-analysis 

Notes

Funding

This work was supported by the Ministry of Science and Technology of the People’s Republic of China (2016YFC1301700). The funder has no role in study design, implementation, data analysis, manuscript writing and publication.

Compliance with ethical standards

Conflicts of interest

The authors report no conflicts of interest in this work.

Research involving human participants and/or animal

The manuscript does not contain clinical studies or patient data and does not involve human participants and/or animals. Thus, no ethical approval is needed.

Supplementary material

415_2018_9176_MOESM1_ESM.docx (24.4 mb)
Supplementary material 1 (DOCX 25020 KB)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Tao Wang
    • 1
  • Kun Yang
    • 2
  • Jichang Luo
    • 1
  • Peng Gao
    • 1
  • Yan Ma
    • 1
  • Yabing Wang
    • 1
  • Long Li
    • 1
  • Yiran Liu
    • 1
  • Yao Feng
    • 1
  • Xue Wang
    • 3
  • Liqun Jiao
    • 1
    Email author
  1. 1.Department of Neurosurgery, Xuanwu HospitalCapital Medical UniversityBeijingChina
  2. 2.Department of Evidence-Based Medicine, Xuanwu HospitalCapital Medical UniversityBeijingChina
  3. 3.Medical Library, Xuanwu HospitalCapital Medical UniversityBeijingChina

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