Background: We describe the prevalence, thromboembolic risk factors, and neurologic outcomes in children with congenital heart disease (CHD) and arterial ischemic stroke (AIS).
Methods: We retrospectively analyzed the clinical data of children with CHD and AIS from 2000 to 2016. Demographics, procedural and postprocedural data, neuroimaging findings, details of antithrombotic treatment, and neurological status at last follow up were evaluated.
Results: Patients with cyanotic CHD accounted for 24 of 30 cases with AIS. The majority of AIS (70%) was procedure related, and the mean time from procedure to diagnosis of stroke was 9.7 (range, 1-30) days. At the time of AIS, 14 (46.7%) patients revealed coexistence of additional thromboembolic causes of AIS. Three patients (10.0%) experienced recurrent AIS and six patients (20.0%) were diagnosed with post-stroke epilepsy. The unfavorable outcomes were found in 13 patients (43.3%), including four deaths. The unfavorable outcome was significantly associated with the main branch involvement of middle cerebral artery (OR = 10.296, 95% CI = 1.335-79.439) and hemorrhagic transformation (OR = 16.264, 95% CI = 1.359-194.690).
Conclusions: Additional thromboembolic risk factors such as systemic or cardiac thrombus, arrhythmia, and surgical procedures for cyanotic CHD were found in patients with CHD and AIS. The main branch involvement of middle cerebral artery and hemorrhagic transformation were significant predictors of unfavorable outcomes. Further studies are required to identify the target for stroke prevention and develop better prophylactic strategies to minimize AIS in patients with CHD.
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