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  • Title: Analysis of DWI ASPECTS and recanalization outcomes of patients with acute-phase cerebral infarction.
    Author: Shigeta K, Ohno K, Takasato Y, Masaoka H, Hayakawa T, Yatsushige H, Inaji M, Sumiyoshi K, Momose T, Maeda T, Kiyokawa J.
    Journal: J Med Dent Sci; 2012 Jun 01; 59(2):57-63. PubMed ID: 23896997.
    Abstract:
    In order to rapidly judge the response to intravenous tissue plasminogen activator (Ⅳ tPA) treatment, we retrospectively analyzed clinical data, such as MRI diffusion-weighted images (DWI), and treatment outcomes in 73 patients who developed anterior circulation disorders. The patients with favorable outcomes (modified Rankin Scale [mRS]: 2 or less) at discharge accounted for 32.9%. In these patients, the National Institutes of Health Stroke Scale (NIHSS) value, DWI Alberta Stroke Programme Early CT Score (ASPECTS), and the incidence of large artery (internal carotid artery [ICA]/sphenoidal segment of the middle cerebral artery [M1]) occlusion at their hospital visit were lower, higher, and lower, respectively (all P < 0.05 in univariate analysis). Multivariate analysis showed significant differences in DWI ASPECTS and the incidence of large artery occlusion. A DWI ASPECTS of at least 8 was found to be predictive of favorable outcomes. However, subclass analysis in the group with a DWI ASPECTS of 8 or higher predicting favorable outcome revealed 13 patients (41.9%) with unfavorable (mRS, 3-6) outcome. The factor associated with unfavorable outcomes is ICA occlusion. The combination of DWI ASPECTS and MRA appeared to be useful for predicting outcomes of Ⅳ tPA.
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