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  • Title: Intra-arterial treatment of patients with acute ischemic stroke and internal carotid artery occlusion: a literature review.
    Author: Kappelhof M, Marquering HA, Berkhemer OA, Majoie CB.
    Journal: J Neurointerv Surg; 2015 Jan; 7(1):8-15. PubMed ID: 24385555.
    Abstract:
    INTRODUCTION: Acute ischemic stroke (AIS) due to internal carotid artery (ICA) occlusion has a poor prognosis if treated by intravenous thrombolysis. Intra-arterial (IA) treatment is a promising alternative. However, its effectiveness is still unproven. METHODS: We collected all publications describing results of IA treatment in acute ICA occlusions. All studies with 10 patients or more providing data on clinical outcome were included. We pooled the results by occlusion site (intracranial, extracranial or tandem occlusions) and treatment method, using recanalization, symptomatic intracranial hemorrhage, mortality and favorable clinical outcome (defined as modified Rankin Scale score 0-2) as outcome measures. RESULTS: 32 studies totaling 1107 patients were included. In the population with intracranial ICA occlusion, recanalization (69% vs 38%, p<0.001) and favorable outcome (34% vs 12%, p<0.001) rates were significantly higher for mechanical thrombectomy than for IA thrombolysis. In the population with extracranial ICA occlusion, stenting resulted in a higher recanalization rate (87% vs 48%, p=0.001) and favorable outcome rate (68% vs 15%, p<0.001) and lower mortality (18% vs 41%, p=0.048) than IA thrombolysis. In the tandem occlusion population, a statistically significant lower death rate was found for the group treated with IA thrombolysis only compared with the groups with any mechanical treatment of the intracranial occlusion (0% vs 34%, p=0.002 and 0% vs 33%, p=0.001). CONCLUSIONS: This review shows that, for patients with AIS due to an extracranial and/or intracranial ICA occlusion, stenting and mechanical thrombectomy are associated with higher recanalization rates and improved functional outcomes compared with IA thrombolysis.
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