J-H Park1, S H Heo2, M H Lee3, H S Kwon4, S U Kwon5, J S Lee6. 1. Department of Neurology, Myongji Hospital, Hanyang University College of Medicine, Goyang. 2. Department of Neurology, Kyung Hee University Hospital, Seoul. 3. Department of Neurology, Myongji St Mary's Hospital, Seoul. 4. Department of Neurology, Hanyang University College of Medicine, Seoul. 5. Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul. 6. Clinical Research Center, Asan Medical Center, Seoul, South Korea.
Abstract
BACKGROUND AND PURPOSE: White matter hyperintensities (WMH) are a predictor of stroke among elderly individuals. This study aimed to evaluate the association between WMH severity and the risk of recurrent vascular events among Asian patients with ischaemic stroke with small-vessel disease (SVD) including micro/macrobleeds and lacunes. METHODS: Data from participants (n = 1454) in the PICASSO (PreventIon of CArdiovascular Events in iSchemic Stroke Patients with High Risk of Cerebral HemOrrhage) trial were reviewed. The severity of WMH in baseline brain magnetic resonance imaging scans was assessed using the Fazekas scale. The association between WMH severity and stroke (ischaemic or hemorrhagic) and major vascular events (MVEs) (a composite of stroke/myocardial infarction/vascular death) was assessed. RESULTS: Study patients had a significant burden of SVD: Fazekas score 0 (n = 2), 1 (n = 426), 2 (n = 650) and 3 (n = 376) [median Fazekas score 2 (mean follow-up, 1.9 ± 1.3 years)]. The stroke incidence rate per 100 personyears was 2.6 in the Fazekas 0-1 group, 3.6 in the Fazekas 2 group and 7.0 in the Fazekas 3 group, and the rates for MVEs were 3.3, 4.3 and 7.6, respectively. Compared with the Fazekas 0-1 group, the Fazekas 3 group was associated with a higher risk of stroke [adjusted hazard ratio (HR), 2.15; 95% confidence interval (CI), 1.19-3.88; P = 0.011], ischaemic stroke (adjusted HR, 2.11; 95% CI, 1.07-4.15; P = 0.031), hemorrhagic stroke (adjusted HR, 3.72; 95% CI, 1.09-12.70; P = 0.036) and MVEs (adjusted HR, 2.09; 95% CI, 1.20-3.66; P = 0.010). CONCLUSION: Advanced WMH in Asian patients with ischaemic stroke with SVD burden was associated with an increased risk of recurrent vascular events. It may exert an effect as a prognostic indicator in high risk of recurrent vascular events.
BACKGROUND AND PURPOSE: White matter hyperintensities (WMH) are a predictor of stroke among elderly individuals. This study aimed to evaluate the association between WMH severity and the risk of recurrent vascular events among Asian patients with ischaemic stroke with small-vessel disease (SVD) including micro/macrobleeds and lacunes. METHODS: Data from participants (n = 1454) in the PICASSO (PreventIon of CArdiovascular Events in iSchemic StrokePatients with High Risk of Cerebral HemOrrhage) trial were reviewed. The severity of WMH in baseline brain magnetic resonance imaging scans was assessed using the Fazekas scale. The association between WMH severity and stroke (ischaemic or hemorrhagic) and major vascular events (MVEs) (a composite of stroke/myocardial infarction/vascular death) was assessed. RESULTS: Study patients had a significant burden of SVD: Fazekas score 0 (n = 2), 1 (n = 426), 2 (n = 650) and 3 (n = 376) [median Fazekas score 2 (mean follow-up, 1.9 ± 1.3 years)]. The stroke incidence rate per 100 personyears was 2.6 in the Fazekas 0-1 group, 3.6 in the Fazekas 2 group and 7.0 in the Fazekas 3 group, and the rates for MVEs were 3.3, 4.3 and 7.6, respectively. Compared with the Fazekas 0-1 group, the Fazekas 3 group was associated with a higher risk of stroke [adjusted hazard ratio (HR), 2.15; 95% confidence interval (CI), 1.19-3.88; P = 0.011], ischaemic stroke (adjusted HR, 2.11; 95% CI, 1.07-4.15; P = 0.031), hemorrhagic stroke (adjusted HR, 3.72; 95% CI, 1.09-12.70; P = 0.036) and MVEs (adjusted HR, 2.09; 95% CI, 1.20-3.66; P = 0.010). CONCLUSION: Advanced WMH in Asian patients with ischaemic stroke with SVD burden was associated with an increased risk of recurrent vascular events. It may exert an effect as a prognostic indicator in high risk of recurrent vascular events.
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