Quantity of Cerebral Microbleeds, Antiplatelet Therapy, and Intracerebral Hemorrhage Outcomes: A Systematic Review and Meta-analysis

Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association
Dan-Ni WangNing Wang

Abstract

Cerebral microbleeds (CMBs) increase future intracerebral hemorrhage (ICH) risk after ischemic stroke (IS) or transient ischemic attack (TIA). However, whether CMB-related ICH risk depends on CMB quantity, CMB location, or antithrombotic agents is unclear. We performed a systematic review and meta-analysis to investigate CMB-related ICH risk, stratifying patients according to the quantity of CMB, the location of CMB, and the type of antithrombotic therapy used. Literature databases were searched for prospective cohorts reporting ICH outcomes in patients with IS or TIA with baseline CMB evaluation. We calculated pooled relative ratios (RRs) for ICH among patients with and without CMBs. Pooled RRs of CMB-related ICH were further calculated in subgroups stratified by CMB quantity, CMB location, and antithrombotic therapy. Among the 10 included studies, the pooled RR of future ICH was 7.73 (95% confidence interval [CI], 4.07-14.70; P < .001) in CMB versus non-CMB patients. Subgroup analysis revealed that compared with non-CMB patients, multiple-CMB patients were at an increased risk for future ICH (RR = 8.02; 95% CI, 3.21-20.01; P < .001), whereas single-CMB patients did not incur this risk (RR = 2.33; 95% CI, .63-8.63; P = .205). ...Continue Reading

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Citations

Jan 23, 2016·Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association·Andreas Charidimou
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