Abstract
Introduction: Congenital cardiac lesions result in abnormal flow patterns that increase risk of cerebrovascular events. We investigated the incidence of stroke and transient ischemic attack (TIA) in adults with congenital heart disease (ACHD). Methods: A systematic review was performed per PRISMA guidelines to identify all studies reporting the incidence of stroke and TIA in ACHD. Two independent reviewers screened studies, which were included if patients were age 16 and older with congenital heart disease, and if the outcome was stroke or TIA. Random-effects meta-analysis was conducted to estimate the pooled incidence rate of stroke and TIA with 95% confidence intervals. The Newcastle-Ottawa Scale for risk of bias was applied. This systematic review is registered (CRD42022322144). Results: Of 11,028 identified abstracts, 27 studies met inclusion criteria. 22 studies reported mean or median age, which was less than 60 years in 18 studies. 39 estimates of incidence rates from 24 studies were entered in the meta-analysis. The pooled incidence rate estimate of stroke and TIA was 0.58 per 100 person years, with significant heterogeneity between studies (95% CI 0.39-0.86, I2 97.8%, p<0.001). Secondary analyses were performed stratified by CHD and outcome subtype. The pooled incidence rate of ischemic stroke was estimated at 0.59 per 100 person years (95% CI 0.36-0.95, I2 98%, p=0.01). Conclusions: This meta-analysis found that the incidence rate of stroke and TIA is higher in ACHD than age-adjusted global estimates, and similar to the American Heart Association reported global ischemic stroke incidence rate for individuals >60 years (0.52 per 100 person years).
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