Endovascular therapy versus medical management for ischemic stroke presenting beyond 24 hours: Systematic review and meta-analysis.

The ideal management for ischemic stroke presenting in the very late time window, or beyond 24 hours from onset, is poorly understood. It is unknown if endovascular therapy (EVT) or best medical management (MM) is associated with superior clinical outcomes. A systematic literature and comparative meta-analysis was completed to evaluate the safety and efficacy of EVT vs. MM for stroke presenting beyond 24 hours. Outcome measures included: 90 day functional independence (mRS 0-2), 90 day mortality, and symptomatic intracranial hemorrhage (sICH) occurrence. A random effects model was used for quantitative synthesis. From the five included studies, a total of 704 patients were included with 461 treated with EVT and 243 treated with MM alone. The proportion of patients achieving functional independence was significantly higher in patients treated with EVT (34.6 %) compared to MM alone (15.9 %) (OR: 4.24; CI: 2.61-6.88, P < 0.00001; I In certain patients presenting beyond 24 hours with ischemic stroke, EVT is associated with a significantly higher odds of achieving functional independence and lower odds of mortality compared with MM. While these results do not function as proof, they do encourage further research into extending the window beyond 24 hours for EVT. Randomized clinical trials are warranted to validate these findings.

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Declaration of Competing Interest The authors declare no conflicts of interest.