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    Prediction of Outcome in Patients With acute ischemic stroke Based on initial severity and improvement in the First 24 h

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    Author
    Wouters, A; Nysten, C; Thijs, V; Lemmens, R
    Date
    2018-05-07
    Source Title
    Frontiers in Neurology
    Publisher
    FRONTIERS MEDIA SA
    University of Melbourne Author/s
    Thijs, Vincent
    Affiliation
    Florey Department of Neuroscience and Mental Health
    Metadata
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    Document Type
    Journal Article
    Citations
    Wouters, A., Nysten, C., Thijs, V. & Lemmens, R. (2018). Prediction of Outcome in Patients With acute ischemic stroke Based on initial severity and improvement in the First 24 h. FRONTIERS IN NEUROLOGY, 9 (MAY), https://doi.org/10.3389/fneur.2018.00308.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/255008
    DOI
    10.3389/fneur.2018.00308
    Abstract
    Introduction: Stroke severity measured by the baseline National Institutes of Health Stroke Scale (NIHSS) is a strong predictor of stroke outcome. Early change of baseline severity may be a better predictor of outcome. Here, we hypothesized that the change in NIHSS in the first 24 h after stroke improved stroke outcome prediction. Materials and methods: Patients from the Leuven Stroke Genetics Study were included when the baseline NIHSS (B-NIHSS) was determined on admission in the hospital and NIHSS after 24 h could be obtained from patient files. The delta NIHSS, relative reduction NIHSS, and major neurological improvement (NIHSS of 0-1 or ≥8-point improvement at 24 h) were calculated. Good functional outcome (GFO) at 90 days was defined as a modified Rankin Scale of 0-2. Independent predictors of outcome were identified by multivariate logistic regression. We performed a secondary analysis after excluding patients presenting with a minor stroke (NIHSS 0-5) since the assessment of change in NIHSS might be more reliable in patients presenting with a moderate to severe deficit. Results: We analyzed the outcome in 369 patients. B-NIHSS was associated with GFO (odds ratio: 0.82; 95% CI 0.77-0.86). In a multivariate model with B-NIHSS and age as predictors, the accuracy [area under the curve (AUC): 0.82] improved by including the delta NIHSS (AUC: 0.86; p < 0.01). In 131 patients with moderate to severe stroke, the predictive multivariate model was more accurate when including the RR NIHSS (AUC: 0.83) to the model which included B-NIHSS, age and ischemic heart disease (AUC: 0.77; p = 0.03). Conclusion: B-NIHSS is a predictor of stroke outcome. In this cohort, the prediction of GFO was improved by adding change in stroke severity after 24 h to the model.

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