| Influence of the site of arterial occlusion on multiple baseline hemodynamic MRI parameters and post-thrombolytic recanalization in acute stroke. | |
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MedLine Citation:
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PMID: 15517229 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In this prospective MRI study, we evaluated the impact of the site of occlusion on multiple baseline perfusion parameters and subsequent recanalization in 49 stroke patients who were given intravenous tissue plasminogen activator (tPA). Pretreatment magnetic resonance angiography (MRA) revealed an arterial occlusion in 47 patients: (1) internal carotid artery (ICA) + M1 middle cerebral artery (MCA) occlusion (n=12); (2) M1 MCA occlusion (n=19); (3) M2 MCA, distal branches of the MCA and anterior cerebral artery (ACA) occlusion (n=16). Patients with ICA occlusion had significantly larger DWI, PWI and mismatch lesion volume on pretreatment MRI compared to patients with other sites of occlusion. The differences in cerebral blood flow (CBF) and peak height were significantly higher in patients with ICA occlusion compared to patients with other sites of occlusion (P=0.03 and P=0.04, respectively). Day 1 MRA showed recanalization in 28 patients (60%). The rate of recanalization was significantly different depending on the site of occlusion: 33% in ICA + M1 MCA occlusion, 63% in M1 MCA occlusion and 81% in either M2 MCA, distal branches of the MCA or ACA occlusion (P=0.002). Our data suggest that CBF and peak height are the most relevant MRI parameters to assess the severity of hemodynamic impairment in regard to the site of occlusion. |
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Authors:
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L Derex; M Hermier; P Adeleine; J B Pialat; M Wiart; Y Berthezène; J C Froment; P Trouillas; N Nighoghossian |
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Publication Detail:
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Type: Journal Article Date: 2004-10-29 |
Journal Detail:
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Title: Neuroradiology Volume: 46 ISSN: 0028-3940 ISO Abbreviation: Neuroradiology Publication Date: 2004 Nov |
Date Detail:
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Created Date: 2004-12-20 Completed Date: 2005-03-10 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 1302751 Medline TA: Neuroradiology Country: Germany |
Other Details:
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Languages: eng Pagination: 883-7 Citation Subset: IM |
Affiliation:
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Service d'Urgences NeuroVasculaires, Hôpital Neurologique, 59 Boulevard Pinel, 69003, Lyon, France. laurent.derex@chu-lyon.fr |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Aged, 80 and over Brain Ischemia / complications, physiopathology* Carotid Stenosis / complications, diagnosis*, drug therapy Cerebrovascular Circulation / physiology* Female Fibrinolytic Agents / therapeutic use Humans Intracranial Thrombosis / complications, diagnosis*, drug therapy Magnetic Resonance Angiography Male Middle Aged Prospective Studies Stroke / etiology, physiopathology* Tissue Plasminogen Activator / therapeutic use Treatment Outcome |
| Chemical | |
Reg. No./Substance:
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0/Fibrinolytic Agents; EC 3.4.21.68/Tissue Plasminogen Activator |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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