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  • Title: An Initial High National Institutes of Health Stroke Scale Score and Any Intracranial Hemorrhage Are Independent Factors for a Poor Outcome in Nonagenarians Treated with Thrombectomy for Acute Large Vessel Occlusion: The Tokyo/Tama-REgistry of Acute Endovascular Thrombectomy (TREAT) Study.
    Author: Inoue M, Ota T, Hara T, Shigeta K, Kamiya Y, Arakawa H, Aoki R, Tsuruta W, Ichijo M, Kaneko J, Shiokawa Y, Hirano T.
    Journal: World Neurosurg; 2022 Sep; 165():e325-e330. PubMed ID: 35717017.
    Abstract:
    BACKGROUND: Mechanical thrombectomy (MT) is effective in acute ischemic stroke patients ≥80 years old with large vessel occlusion (LVO). However, data for patients ≥90 years old remain very limited, and factors influencing functional outcomes are unclear. This study aimed to investigate factors influencing functional outcomes in patients ≥90 years old treated with MT for acute LVO. METHODS: This retrospective observational study used prospectively collected data from the Tokyo/tama-REgistry of Acute endovascular Thrombectomy (TREAT) study. Inclusion criteria were as follows: 1) patients ≥90 years old treated with MT for LVO and 2) prestroke modified Rankin Scale (mRS) score, 0-3. The functional outcome was defined based on the mRS score at 90 days after the procedure: good functional outcome, mRS score 0-3 and poor functional outcome, mRS score 4-6. RESULTS: Data were analyzed for 104 patients ≥90 years old. The good functional outcome was observed in 25 patients (24.0%), and the poor functional outcome was observed in the remaining 79 patients. Significant differences were identified in initial National Institutes of Health Stroke Scale (NIHSS) score, modified Thrombolysis in Cerebral Infarction grade 2b-3, modified Thrombolysis in Cerebral Infarction grade 3, and any intracranial hemorrhage and hemorrhagic infarction in univariate analyses. Multivariable analysis confirmed the initial NIHSS score (odds ratio, 1.08; 95% confidence interval, 1.01-1.17; P = 0.045) and any intracranial hemorrhage (odds ratio, 11.6; 95% confidence interval, 1.43-95.0; P = 0.022) as independent factors for the functional outcome. CONCLUSIONS: An initial high NIHSS score and any intracranial hemorrhage are independent factors for the poor functional outcome in acute ischemic stroke patients ≥90 years old treated with MT.
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