Abstract WP27: Endovascular Treatment in Elderly Patient. Should We Continue Treating Them?

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Background: Endovascular treatment has been approved and has demonstrated effective in treating strokes with large vessel occlusion in trials published. A short number of elderly patients were included in these trials of thrombectomy. Current criteria admit patients without limit age but demand good baseline Rankin. However, despite those efforts in subgroup of older patients, we could achieve outcomes and long-term results different after endovascular treatment.Methods: We performed an analysis of consecutives patients treated with stent-retriever from March 2010 to May 2016. We dichotomize between younger (<80 years old) and elderly (>=80y) patients. We assessed good functional outcome in Rankin scale (0-2) at 3 month and long-term follow-up, percentage of successful recanalization (TICI 2b-3), symptomatic intracranial hemorrhage (SICH) and mortality. Moreover we determine percentage of futile recanalization in elderly patients and variables associated to failed thrombectomy.Results: A total of 622 patients were analyzed, mean age 67+/-12, baseline NIH:17, OSTP (onset stroke time to groin puncture): 279 min, baseline Rankin 0-1: 92%. Subgroup of elderly patients represented 21% of patients (131pt): mean age 83 (80-92), NIH:18, OSTP: 272 min, baseline Rankin 0-1:96%. We compare percentage of successful recanalization (TICI 2b-3) between younger and older patient (75% vs 60%; p:0.001). In multivariate analysis functional independence at 3 month (mRs 0-2) was significantly worse in elderly subgroup compared with younger patients (23% vs 51% ) and mortality (25% vs 17%). In a subgroup of long-term follow-up we found in elderly patient an increase of mortality (49%) after 2.5 years and lower percentage mRS 0-2 (18%), due to morbidity and fragility after stroke. Futile recanalization was higher in elderly patients compared with younger (31% vs 17%). Variables associated to futile recanalization in this subgroup of patients were ASPECTS<8 and hostile vascular access to occluded artery.Conclusions: We recommend more restrictive criteria to endovascular treatments in elderly patients. A low percentage of good outcome and high percentage of mortality at long-term follow-up don’t contribute to recent health target of successful aging.

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