• World Neurosurg · May 2021

    Meta Analysis

    Outcomes after Thrombectomy for Minor Stroke: A Meta-Analysis.

    • Xiao Wu, Mihir Khunte, Sam Payabvash, Chengcheng Zhu, Alexandria Brackett, Charles C Matouk, Dheeraj Gandhi, Pina Sanelli, and Ajay Malhotra.
    • Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut, USA.
    • World Neurosurg. 2021 May 1; 149: e1140-e1154.

    PurposeTo determine the outcomes after mechanical thrombectomy (MT) versus medical management in patients with minor stroke symptomatology.MethodsA meta-analysis was performed for studies reporting outcomes after MT, either as stand-alone therapy or with intravenous thrombolysis in patients with minor stroke and large-vessel occlusion.ResultsFourteen studies with 2134 patients met the selection criteria and were included. Two studies compared immediate thrombectomy versus best medical management (with rescue thrombectomy) and the odds ratios of excellent outcomes, good outcomes, mortality and incidence of symptomatic intracranial hemorrhage (sICH) after immediate thrombectomy versus best medical management were 1.07 (95% confidence interval [CI] 0.93-1.22%), 1.15 (95% CI 1.05-1.25), 0.65 (95% CI 0.30-1.38), and 2.89 (95% CI 0.82-10.13), respectively. Among the 8 studies that compared MT outcomes versus medical management (without thrombectomy), odds ratios of excellent outcomes, good outcomes, mortality, and incidence of sICH after MT versus medical management were 0.98 (95% CI 0.89-1.07), 0.94 (95% CI 0.89-1.00), 1.61 (95% CI 1.08-2.41), and 2.59 (95% CI 1.35-4.96), respectively. Among all 14 studies, pooled proportions of excellent outcomes, good outcomes, mortality, and sICH after thrombectomy were 58.7%, 76.2%, 6.82%, and 3.23%, respectively.ConclusionsOur study shows significant selection bias and heterogeneity in the literature with differences in baseline characteristics (age, stroke severity, prestroke modified Rankin Scale score, side of infarct, vessel and site of occlusion, use of intravenous thrombolysis, criteria for clinical deterioration, and selection bias for rescue MT and rates of reperfusion), emphasizing the need for a randomized controlled trial.Copyright © 2020 Elsevier Inc. All rights reserved.

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