AANS Neurosurgeon | Volume 26, Number 2, 2017

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Clinical Benefit of Clot Retrieval Now Proven Up to 24 Hours After Major Ischemic Stroke

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Results of an international, randomized controlled research study show that mechanical thrombectomy, which is an endovascular treatment to remove a stroke-causing blood clot in the brain, is effective in some patients even when performed within six to 24 hours after a stroke. Rush University Medical Center is the only Illinois site, one of seven sites in the U.S, and one of only 22 sites in the world to participate in the international study called the DAWN trial where severe stroke patients underwent a thrombectomy after the six hour time window. “Past published research shows an overwhelming, class 1, level A evidence supporting endovascular clot removal as the standard of care for eligible patients with acute stroke secondary to a large vessel occlusion within the first six hours after symptom onset,” said Dr. Michael Chen, neurointerventionalist and lead investigator of the study at Rush.

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