Artikel
Risk factors and clinical consequences of multiple intracranial aneurysms: A systematic review and meta-analysis
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Veröffentlicht: | 18. Juni 2018 |
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Gliederung
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Objective: Multiple intracranial aneurysms (MIA) are common findings of cerebral angiographies; however, MIA prevalence varies in different patient cohorts.We sought to elucidate risk factors influencing MIA prevalence and the clinical consequences.
Methods: We systematically searched PubMed, Scopus, Embase and Cochrane Library databases for publications before Jan 15, 2017 on MIA prevalence and risk factors. We used random-effects meta-analysis, and multivariate regression analysis to assess the impacts of individual, study and population characteristics.
Results: We included 174 studies reporting on MIA (mean overall prevalence 20.1%, range 2–44.9%) in 134 study populations with 86,989 intracranial aneurysm (IA) patients enrolled between 1950 and 2015. Studies from Europe and North-America (p<0.001) and more recent enrolment years (p=0.046) were independently associated with higher MIA prevalence. In meta-analysis, MIA correlated with female sex (odds ratio [OR]=1.59, 95% CI 1.4–1.8), higher patient age (>40 years; OR=1.6, 1.14–2.25), arterial hypertension (OR=1.51, 1.17–1.94), smoking (OR=1.89, 1.37–2.6) and familiar IA (OR=2.02, 1.47–2.77), and formation of de novo (OR=3.92, 1.95–7.87) and growth of initial IA (OR=3.47, 1.87–6.45). Risk of subarachnoid hemorrhage in MIA patients was higher only in longitudinal studies from Japan and Korea (OR=2.08, 1.46–2.96).
Conclusion: Female sex, higher age, arterial hypertension, smoking and familiar IA are major risk factors for MIA. In addition, MIA patients are at risk for enhanced IA formation. Further studies are needed to evaluate rupture risk and the role of ethnicity, especially in the context of increased MIA identification with improved neurovascular imaging.