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Comment & Response
April 26, 2016

Mechanical Thrombectomy and Functional Outcomes After Stroke

Author Affiliations
  • 1Department of Medicine, University of Florida, Gainesville
  • 2Brigham and Women’s Hospital Heart and Vascular Center, Harvard Medical School, Boston, Massachusetts

Copyright 2016 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.

JAMA. 2016;315(16):1791. doi:10.1001/jama.2016.0380

To the Editor The 2015 American Heart Association/American Stroke Association focused update for the early management of acute ischemic stroke recommended endovascular therapy as an adjunctive therapy to intravenous thrombolysis.1 Dr Badhiwala and colleagues2 performed a meta-analysis regarding endovascular thrombectomy for acute ischemic stroke and found that endovascular thrombectomy was associated with improved functional outcomes (odds ratio [OR], 1.56 [95% CI, 1.14-2.13]; P = .005) and no significant difference in all-cause mortality (OR, 0.87 [95% CI, 0.68-1.12]; P = .27) at 90 days compared with standard medical care. The authors included the SYNTHESIS (Intra-arterial vs Systemic Thrombolysis for Acute Ischemic Stroke) expansion trial,3 which randomized patients with acute ischemic stroke to receive endovascular therapy alone (without intravenous tissue plasminogen activator [tPA]) vs tPA. We argue that the SYNTHESIS study3 should have been excluded from the analysis because it is fundamentally different from the other included studies. Including SYNTHESIS in the Badhiwala et al analysis could have underestimated the effect of interventional treatment on important outcomes.