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  • Title: Associations between Pre-Admission Risk Scores and Two-Year Clinical Outcomes in Ischemic Stroke or Transient Ischemic Attack Patients with Non-Valvular Atrial Fibrillation.
    Author: Tokunaga K, Yamagami H, Koga M, Todo K, Kimura K, Itabashi R, Terasaki T, Shiokawa Y, Kamiyama K, Takizawa S, Okuda S, Okada Y, Kameda T, Nagakane Y, Hasegawa Y, Shibuya S, Ito Y, Matsuoka H, Takamatsu K, Nishiyama K, Kario K, Yagita Y, Kitazono T, Kinoshita N, Takasugi J, Okata T, Yoshimura S, Sato S, Arihiro S, Toyoda K, SAMURAI Study Investigators.
    Journal: Cerebrovasc Dis; 2018; 45(3-4):170-179. PubMed ID: 29597211.
    Abstract:
    BACKGROUND: We aimed to clarify associations between pre-admission risk scores (CHADS2, CHA2DS2-VASc, and HAS-BLED) and 2-year clinical outcomes in ischemic stroke or transient ischemic attack (TIA) patients with non-valvular atrial fibrillation (NVAF) using a prospective, multicenter, observational registry. METHODS: From 18 Japanese stroke centers, ischemic stroke or TIA patients with NVAF hospitalized within 7 days after onset were enrolled. Outcome measures were defined as death/disability (modified Rankin Scale score ≥3) at 2 years, 2-year mortality, and ischemic or hemorrhagic events within 2 years. RESULTS: A total of 1,192 patients with NVAF (527 women; mean age, 78 ± 10 years), including 1,141 ischemic stroke and 51 TIA, were analyzed. Rates of death/disability, mortality, and ischemic or hemorrhagic events increased significantly with increasing pre-admission CHADS2 (p for trend <0.001 for death/disability and mortality, p for trend = 0.024 for events), CHA2DS2-VASc (p for trend <0.001 for all), and HAS-BLED (p for trend = 0.004 for death/disability, p for trend <0.001 for mortality, p for trend = 0.024 for events) scores. Pre-admission CHADS2 (OR per 1 point, 1.52; 95% CI 1.35-1.71; p <0.001 for death/disability; hazard ratio (HR) per 1 point, 1.23; 95% CI 1.12-1.35; p <0.001 for mortality; HR per 1 point, 1.14; 95% CI 1.02-1.26; p = 0.016 for events), CHA2DS2-VASc (1.55, 1.41-1.72, p < 0.001; 1.21, 1.12-1.30, p < 0.001; 1.17, 1.07-1.27, p < 0.001; respectively), and HAS-BLED (1.33, 1.17-1.52, p < 0.001; 1.23, 1.10-1.38, p < 0.001; 1.18, 1.05-1.34, p = 0.008; respectively) scores were independently associated with all outcome measures. CONCLUSIONS: In ischemic stroke or TIA patients with NVAF, all pre-admission risk scores were independently associated with death/disability at 2 years and 2-year mortality, as well as ischemic or hemorrhagic events within 2 years.
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