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  • Title: Pre-admission CHADS2, CHA2DS2-VASc, and R2CHADS2 Scores on Severity and Functional Outcome in Acute Ischemic Stroke with Atrial Fibrillation.
    Author: Tanaka K, Yamada T, Torii T, Furuta K, Matsumoto S, Yoshimura T, Takase K, Wakata Y, Nakashima N, Kira J, Murai H.
    Journal: J Stroke Cerebrovasc Dis; 2015 Jul; 24(7):1629-35. PubMed ID: 25906940.
    Abstract:
    BACKGROUND: We examined the association between pre-admission risk scores and severity on admission and functional outcome in acute ischemic stroke with atrial fibrillation (AF). METHODS: Between September 2011 and April 2014, we retrospectively extracted consecutive ischemic stroke patients with AF whose pre-admission modified Rankin Scale (mRS) score was 2 or less from our prospective database. Pre-admission CHADS2, CHA2DS2-VASc, and R2CHADS2 scores were calculated in each patient, and their association with the National Institutes of Health Stroke Scale (NIHSS) score on admission or unfavorable outcome (mRS ≥ 3 at 3 months from the onset) was assessed. RESULTS: A total of 344 patients (189 were men; age, 77.7 ± 10.0 years) were included in the analysis. The median pre-admission CHADS2, CHA2DS2-VASc, and R2CHADS2 scores were 2, 4, and 4, respectively. NIHSS score on admission was positively correlated with pre-admission CHADS2 (ρ = .116, P = .031), CHA2DS2-VASc (ρ = .166, P = .020), and R2CHADS2 scores (ρ = .106, P = .049). Receiver operating characteristic (ROC) curve analysis revealed that pre-admission CHADS2 score of 2 or more (sensitivity, 80%; specificity, 45%; area under the ROC curve [AUC], .654), CHA2DS2-VASc score of 3 or more (sensitivity, 86%; specificity, 44%; AUC, .683), and R2CHADS2 score of 4 or more (sensitivity, 61%; specificity, 62%; AUC, .657) were associated with unfavorable outcome. The pre-admission CHA2DS2-VASc score was better than the pre-admission CHADS2 score in estimating unfavorable outcome (P = .017). In multivariate analysis, cutoffs of these scores, female sex, higher NIHSS score, and internal carotid artery occlusion were associated with unfavorable outcome. CONCLUSIONS: Pre-admission CHADS2, CHA2DS2-VASc, and R2CHADS2 scores were associated with onset severity and functional outcome in acute ischemic stroke with AF.
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