Multicenter, retrospective analysis of endovascular treatment for acute ischemic stroke in nonagenarians

Background: With the increasing age of acute stroke patients being admitted to hospitals, more data are needed on indications, complications and outcome of endovascular treatment (EVT) in the very elderly. Methods: Retrospective observational study with data collection from Belgian, Swiss, Canadian comprehensive stroke centers and Swedish EVT National database. All patients with acute ischemic stroke were eligible if aged older than or >= 90 years and treated with EVT +/- pretreatment with intravenous thrombolysis (IVT). Safety assessment comprised presence of peri-procedural complications, hemorrhagic transformation or other adverse events (= 2b), favorable clinical outcome (modified Rankin Score (mRS) 0-2) and 3-months mortality. Results: Inclusion of 112 nonagenarians (mean age 93.3 +/- 2.5 years; 76.8% women; pre-mRS = 2b) was achieved. Favorable outcome (mRS