Recurrent stroke risk and cerebral microbleed burden in ischemic stroke and TIA: A meta-analysis

Objective: To determine associations between cerebral microbleed (CMB) burden with recurrent ischemic stroke (IS) and intracerebral hemorrhage (ICH) risk after IS or TIA. - Methods: We identified prospective studies of patients with IS or TIA that investigated CMBs and stroke (ICH and IS) risk durin...

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Hauptverfasser: Wilson, Duncan (VerfasserIn) , Veltkamp, Roland (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: September 2, 2016
In: Neurology
Year: 2016, Jahrgang: 87, Heft: 14, Pages: 1501-1510
ISSN:1526-632X
DOI:10.1212/WNL.0000000000003183
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1212/WNL.0000000000003183
Verlag, lizenzpflichtig, Volltext: https://n.neurology.org/content/87/14/1501
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Verfasserangaben:Duncan Wilson, Andreas Charidimou, Gareth Ambler, Zoe V. Fox, Simone Gregoire, Phillip Rayson, Toshio Imaizumi, Felix Fluri, Hiromitsu Naka, Solveig Horstmann, Roland Veltkamp, Peter M. Rothwell, Vincent I.H. Kwa, Vincent Thijs, Yong-Seok Lee, Young Dae Kim, Yining Huang, Ka Sing Wong, Hans Rolf Jäger, David J. Werring

MARC

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245 1 0 |a Recurrent stroke risk and cerebral microbleed burden in ischemic stroke and TIA  |b A meta-analysis  |c Duncan Wilson, Andreas Charidimou, Gareth Ambler, Zoe V. Fox, Simone Gregoire, Phillip Rayson, Toshio Imaizumi, Felix Fluri, Hiromitsu Naka, Solveig Horstmann, Roland Veltkamp, Peter M. Rothwell, Vincent I.H. Kwa, Vincent Thijs, Yong-Seok Lee, Young Dae Kim, Yining Huang, Ka Sing Wong, Hans Rolf Jäger, David J. Werring 
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520 |a Objective: To determine associations between cerebral microbleed (CMB) burden with recurrent ischemic stroke (IS) and intracerebral hemorrhage (ICH) risk after IS or TIA. - Methods: We identified prospective studies of patients with IS or TIA that investigated CMBs and stroke (ICH and IS) risk during ≥3 months follow-up. Authors provided aggregate summary-level data on stroke outcomes, with CMBs categorized according to burden (single, 2-4, and ≥5 CMBs) and distribution. We calculated absolute event rates and pooled risk ratios (RR) using random-effects meta-analysis. - Results: We included 5,068 patients from 15 studies. There were 115/1,284 (9.6%) recurrent IS events in patients with CMBs vs 212/3,781 (5.6%) in patients without CMBs (pooled RR 1.8 for CMBs vs no CMBs; 95% confidence interval [CI] 1.4-2.5). There were 49/1,142 (4.3%) ICH events in those with CMBs vs 17/2,912 (0.58%) in those without CMBs (pooled RR 6.3 for CMBs vs no CMBs; 95% CI 3.5-11.4). Increasing CMB burden increased the risk of IS (pooled RR [95% CI] 1.8 [1.0-3.1], 2.4 [1.3-4.4], and 2.7 [1.5-4.9] for 1 CMB, 2-4 CMBs, and ≥5 CMBs, respectively) and ICH (pooled RR [95% CI] 4.6 [1.9-10.7], 5.6 [2.4-13.3], and 14.1 [6.9-29.0] for 1 CMB, 2-4 CMBs, and ≥5 CMBs, respectively). - Conclusions: CMBs are associated with increased stroke risk after IS or TIA. With increasing CMB burden (compared to no CMBs), the risk of ICH increases more steeply than that of IS. However, IS absolute event rates remain higher than ICH absolute event rates in all CMB burden categories. 
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