Abstract
We retrospectively analyzed the current status of treatment for anterior circulation large vessel occlusion (LVO) in island areas with a high population aging rate. We investigated 62 consecutive patients with ischemic stroke due to acute anterior circulation LVO between October 1, 2017 and June 30, 2019. In all, 26 (41.1%) patients underwent endovascular treatment (EVT). The successful recanalization rate of EVT was 88.5% (23/26). There was a significant difference in the age (median, 75.5 years vs. 81 years, respectively, P = 0.0411) and the rate of intravenous tissue plasminogen activator (tPA) therapy (53.5% vs. 11.1%, respectively, P <0.001) between the EVT group and the non-EVT group. Patients in the EVT group achieved a favorable outcome more frequently than those in the non-EVT group (50% vs. 11.1%, respectively, P = 0.0012). In the analysis based on the place of onset among the three cities comprising Awaji Island and the four groups with in-hospital onset, there was no significant difference in the rate of EVT, and the outcome of the in-hospital onset group was poor. Among the EVT group, there was a significant difference in the pre-treatment National Institutes of Health Stroke Scale score (median, 15 vs. 19, respectively, P = 0.0237) and time from onset to recanalization (O2R; median, 240 min vs. 323 min, respectively, P = 0.0128) between the favorable outcome group and the unfavorable outcome group. Even in an island area, it is possible to complete the treatment of ischemic stroke due to LVO within the regional medical area.
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