Abstract
ObjectiveWe investigated the precise clinical and radiologic characteristics of intracerebral hemorrhage associated with direct oral anticoagulant use. MethodsPatients with acute spontaneous intracerebral hemorrhage admitted to our department from September 2014 to November 2017 were retrospectively analyzed. Clinical and neuroradiological characteristics of patients with direct oral anticoagulant-related intracerebral hemorrhage, and effects of prior treatment on the severity at admission and on outcome at discharge were assessed. ResultsOf the 301 enrolled patients (103 women; median age 68 years), 261 received no oral anticoagulants (86.8%), 20 received warfarin (6.6%), and 20 received direct oral anticoagulants (DOACs) (6.6%). Median initial National Institutes of Health Stroke Scale scores differed significantly among the groups (P = .0283). Systolic blood pressure (P = .0031) and estimated glomerular filtration rate (P = .0019) were significantly lower in the oral anticoagulant-related intracerebral hemorrhage group than in other groups. Total small vessel disease scores were significantly higher in the oral anticoagulant-related intracerebral hemorrhage group than in the warfarin group (P = .0413). Multivariate analysis revealed that prior oral anticoagulant treatment (odds ratio: 0.21, 95% confidence interval: 0.05-0.96, P = .0445) was independently negatively associated with moderate-to-severe neurological severity (stroke scale score ≥10) after adjusting for intracerebral hemorrhage location and various risk factors. There were significant differences in hematoma volume in the basal ganglia (P = .0366). ConclusionsDOAC-related intracerebral hemorrhage may occur particularly in patients with a high risk of bleeding; however, they had a milder initial neurological severity than those with warfarin-related intracerebral hemorrhage, possibly due to relatively smaller hematoma volume, especially in the basal ganglia.
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