Document Detail

Mechanical thrombectomy for acute ischemic stroke using the MERCI retriever and penumbra aspiration systems.
MedLine Citation:
PMID:  22182267     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Intracranial large-vessel ischemia is associated with poor clinical outcome and increased mortality. Early reperfusion of ischemic tissue remains the goal of treatment of stroke. Intravenous tissue plasminogen activator (IV tPA) has been shown to improve clinical outcomes for patients who experience ischemic stroke, but it has been shown to be less efficacious for large-vessel occlusions. Mechanical clot extraction provides a therapeutic option for those who are ineligible for, or who do not respond to, conventional ischemic stroke treatment.
METHODS: We reviewed the initial studies of the Merci Retriever and Penumbra System for mechanical clot extraction. Baseline patient characteristics, as well as revascularization rates and clinical outcome, were examined.
RESULTS: Baseline National Institutes of Health Stroke Scale scores were greater than those observed in previous IV tPA studies, consistent with large-vessel occlusion. Successful recanalization occurred more frequently than with IV tPA and was associated with improved clinical outcome and mortality. Symptomatic intracranial hemorrhage and mortality rates were greater than those seen with IV tPA.
CONCLUSIONS: Mechanical clot extraction can be performed safely in patients with large-vessel occlusions, and successful recanalization resulted in better clinical outcomes than those without. Mechanical thrombectomy provides a therapeutic option for ischemic stroke patients who are ineligible for, or who do not respond to, IV thrombolytics. Further studies, including randomized clinical trials, are needed to validate these findings.
Matthew S Tenser; Arun P Amar; William J Mack
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  World neurosurgery     Volume:  76     ISSN:  1878-8750     ISO Abbreviation:  World Neurosurg     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-20     Completed Date:  2012-02-06     Revised Date:  2012-04-25    
Medline Journal Info:
Nlm Unique ID:  101528275     Medline TA:  World Neurosurg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  S16-23     Citation Subset:  IM    
Copyright Information:
Copyright © 2011. Published by Elsevier Inc.
Department of Neurosurgery, University of Southern California, Los Angeles, California, USA.
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MeSH Terms
Brain Ischemia / complications,  mortality,  surgery*
Cerebral Revascularization
Clot Retraction*
Plasminogen Activators / therapeutic use
Randomized Controlled Trials as Topic
Stroke / etiology,  mortality,  surgery*
Thrombectomy / methods*
Thromboembolism / complications,  surgery*
Thrombolytic Therapy
Tissue Plasminogen Activator / therapeutic use
Treatment Outcome
United States
United States Food and Drug Administration
Reg. No./Substance:
EC 3.4.21.-/Plasminogen Activators; EC Plasminogen Activator

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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