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  • Title: The totaled health risks in vascular events (THRIVE) score predicts ischemic stroke outcomes independent of thrombolytic therapy in the NINDS tPA trial.
    Author: Kamel H, Patel N, Rao VA, Cullen SP, Faigeles BS, Smith WS, Flint AC.
    Journal: J Stroke Cerebrovasc Dis; 2013 Oct; 22(7):1111-6. PubMed ID: 23122722.
    Abstract:
    BACKGROUND: To date, no ischemic stroke outcome prediction scores have been validated for use in the setting of both endovascular and non-endovascular stroke treatments. The Totaled Health Risks in Vascular Events (THRIVE) score has been previously validated in patients undergoing endovascular stroke treatment, and we hypothesized that it would perform similarly well in patients receiving intravenous tissue plasminogen activator (tPA) or no acute therapy. METHODS: We compared the performance of the THRIVE score between patients in the National Institutes of Neurological Disorders and Stroke (NINDS) tPA trial and patients in the Mechanical Embolus Removal in Cerebral Ischemia (MERCI) trials of endovascular stroke treatment. The predictive performance of the THRIVE score was compared using receiver operator characteristic (ROC) curve analysis. In the NINDS cohort, separate analyses were also performed for patients receiving tPA versus those receiving placebo. RESULTS: ROC curve analysis revealed a good prediction of outcomes across the range of THRIVE scores in both the NINDS and MERCI datasets. As we have previously found in the MERCI datasets, the THRIVE score, which encompasses the National Institutes of Health Stroke Scale (NIHSS) score, age, and chronic disease burden, was a better predictor of outcomes than NIHSS and age alone in the NINDS trial dataset. THRIVE score and tPA administration both strongly predicted outcome, but these effects were statistically independent. CONCLUSIONS: The THRIVE score provides accurate prediction of long-term neurologic outcomes in patients with acute ischemic stroke regardless of treatment modality. Both the THRIVE score and tPA administration predict outcome, but the THRIVE score does not influence the impact of tPA on outcome, and tPA administration does not influence the impact of THRIVE score on outcome.
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