Gregory 1. del Zoppo Etsuro Mori Werner Hacke (Eds.) Thrombolytic Therapy in Acute Ischemic Stroke II With 60 Figures and 41 Tables Springer-Verlag Berlin Heidelberg New York London Paris Tokyo Hong Kong Barcelona Budapest Gregory J. del Zoppo, M.D. Department of Molecular and Experimental Medicine, The Scripps Research Institute and Division of Hematology/Medical Oncology, Scripps Clinic and Research Foundation, 10666 North Torrey Pines Road, La Jolla, CA 92037, USA Etsuro Mori, M.D. Neurology Service, Hyogo Brain and Heart Center at Himeji 520 Saisho-ko, Himeji, 670, Japan Prof. Dr. Werner Hacke Neurologische Klinik, Ruprecht-Karls-Universitat Heidelberg 1m Neuenheimer Feld 400, W-6900 Heidelberg 1, FRG Publication of this volume was substantially underwritten by The Roon Foundation, Inc., of La Jolla, California, USA. ISBN-13: 978-3-540-56442-3 e-ISBN-13: 978-3-642-78061-5 DOl: 10.1007/ 978-3-642-78061-5 Library of Congress Cataloging-in-Publication Data. Thrombolytic therapy in acute ischemic stroke II/Gregory J. del Zoppo, Etsuro Mori, Werner Hacke (eds.). p. cm. Includes bibliographical references and index. 1. Cerebrovascular disease - Chemotherapy - Congresses. 2. Thrombolytic therapy - Congresses. 3. Tissue plasminogen activator - Therapeutic use - Congresses. 4. Fibrinolysis - Congresses. 5. Thrombolytic Therapy - congresses. I. Del Zoppo, Gregory J. II. Mori, Etsuro, 1951- . III. Hacke, W, (Werner), 1948- . [DNLM: 1. Cerebral Ischemia - drug therapy - congresses. 2. Fibrinolysis - congresses. 3. Fibrinolytic Agents - therapeutic use - congresses. WL 355 T5314 1993] RC388.5.T4773 1993 616.8'10651-de20 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. 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'JYpesetting: K+V Fotosatz GmbH, Beerfelden 25/3130-5 4 3 2 1 0 - Printed on acid-free paper Preface With the demonstration that cerebral arterial recanalization is feasible, there has been a more active pursuit of thrombolysis as a therapeutic option for pa tients in the acute stages of ischemic stroke. Since the inaugural symposium held in Heidelberg in May 1990, plans for prospective controlled trials of both fibrin-selective thrombolytic agents and fibrinogenolytic agents have matured. Several recently completed prospective trials give insights into the profile of hemorrhagic transformation and its risk, and limited information about clinical benefit. The possibility of early recanalization suggests an adjunctive role for possible neuronal protectants, new antithrombotics, and other novel agents and marries two major investigational directions. These and related topics provided the content for the Second International Symposium on Thrombolysis in Acute Ischemic Stroke, held in La Jolla 1-2 May 1992. This volume contains selected papers from that meeting, and a summary of the discussions which accompanied the papers. The editors wish to express their gratitude for the extraordinary support of this symposium by a number of sponsors, including the Roon Foundation, Ab bott Laboratories, Genentech Inc., Knoll Pharmaceuticals, Sumitomo Phar maceuticals Co., Ltd., Dr. Karl Thomae GmbH (Boehringer Ingelheim Deutschland), and the Upjohn Company. Preparation of the manuscripts was facilitated by Ms. J. Koehler and her team and Ms. S. Larsen at the Scripps Research Institute. We wish to again thank Springer-Verlag, Heidelberg, for its generous assistance in the preparation and publication of this volume. Of course, this effort would not have been possible without the provocative con tributions of a growing number of investigators to this exciting area. La Jolla Gregory J. del Zoppo Etsuro Mori Werner Hacke Contents Background to Thrombolytic Therapy in Acute Ischemic Stroke Therapy for Acute Ischemic Stroke: Clinical Needs and Statistical Burdens L. R. Caplan and M. Gent ..................................... 3 Clinical Outcome of Acute Ischemic Stroke: Prospective Angiographic Studies C. Fieschi, M. L. Sacchetti, C. Argentino, M. Fiorelli, D. Toni, C. Gori, S. Bastianello, and G. Sette ............................ 13 The Ischemic Penumbra: Usefulness of PET W. J. Powers .................................................. 17 Thrombolytic Agents: Lessons for Their Use in Acute Stroke from Myocardial Infarction Experience M. Verstraete ................................................. 22 Pathogenesis of Secondary Brain Hemorrhage After Ischemia: Lessons from Animal Models .,. and a few from man, tool G. F. Molinari ................................................ 29 Clinical Dials of Fibrinolytic Agents in Carotid Territory Cerebral Ischemia Symptom-Based 'frials of Intravenous rt-PA in Acute Stroke T. Brott...................................................... 39 A Safety and Efficacy Study of Intravenous rt-PA in Patients with Acute Stroke M. J. Alberts for The rt-PA Acute Stroke Study Group ............. 45 VIII Contents Recanalization, Infarct Volume, Cerebral Hemorrhage, and Clinical Outcome After Intravenous Recombinant Tissue Plasminogen Activator and Heparin in Acute Carotid Thrritory Stroke R. von Kummer, M. Forsting, W. Hacke, and K. Sartor ............ 53 Intravenous Tissue Plasminogen Activator in Acute Thromboembolic Stroke: A Placebo-Controlled, Double-Blind lHal T. Yamaguchi, T. Hayakawa, and H. Kikuchi for the Japanese Thrombolysis Study Group ..................................... 59 The European Cooperative Acute Stroke Study (ECASS) M. Kaste, C. Fieschi, W. Hacke, E. Lesaffre, M. Verstraete, and J. Fr6hlich ............................................... 66 On the Estimation of the Sample Size for the ECASS Study E. Lesaffre, I. Scheys, J. Fr6hlich, and E. Bluhmki ................ 72 Australian Streptokinase lHal (ASK) G. A. Donnan, S. M. Davis, B. R. Chambers, P. C. Gates, G. J. Hankey, E. G. Stewart-Wynne, D. Rosen, R. R. Thck, and J. J. McNeil ........ 80 Thrombolytic and Antithrombotic Therapy in Acute Ischemic Stroke. Multicenter Acute Stroke ltial - Italy (MAST-I) L. Candelise for The MAST-I Collaborative Group ................ 86 Discussion Summary: Clinical ltials in Progress Chaired by G. Boysen ......................................... 95 Other Applications of Fibrinolytic Agents in the Central Nervous System Acute Central Retinal Artery Occlusion and the Role of Thrombolysis H.-J. Freitag, H. Zeumer, and V. Knospe .......... ... . . . . . . . . . . . . . 103 Current Status of Fibrinolysis for the Rapid Dissolution of Subarachnoid and Intraventricular Clot B. Weir ...................................................... 106 Discussion Summary: Other Applications of Fibrinolytic Agents in the Central Nervous System Chaired by B. Copeland ....................................... 114 Contents IX Insights into the Pathogenesis of Cerebral Ischemia Relevant to Fibrinolysis Deterioration of Acute Stroke K. Asplund .................................................. 119 Early Spontaneous Recanalization of Thromboembolic Stroke E. Mori and Y. Yoneda ........................................ 129 Spectacular Shrinking Deficits in Acute Ischemic Stroke K. Minematsu ................................................ 138 The Significance of Various Factors Associated with Hemorrhagic 1tansformation in Patients 1reated with Recombinant Tissue Plasminogen Activator for Acute Stroke M. S. Pessin and S. M. Wolpert for The rt-PA Acute Stroke Study Group ................................................. 145 Thrombolysis: Stroke Subtype and Embolus 'JYpe W. Hacke .................................................... 153 The Prognostic Value of Collateral Blood Flow in Acute Middle Cerebral Artery Occlusion M. Forsting, D. Krieger, R. von Kummer, W. Hacke, and K. Sartor . . 160 Morphological Evidence of Progressive Microvascular Impairment in Middle Cerebral Artery Occlusion-Reperfusion G.J. del Zoppo and J.H. Garcia ................................ 168 Discussion SuIiunary: Insights into the Pathogenesis of Cerebral Ischemia Relevant to Fibrinolysis Chaired by J. Toole and T. Yamaguchi ........................... 181 Diagnosis and Assessment of Outcomes in Acute Cerebral Ischemia The Relevance of CT Scanning and Angiography for Patients with Acute Stroke 1reated with Recombinant Tissue Plasminogen Activator S. M. Wolpert and M. S. Pessin for The rt-PA Acute Stroke Study Group ................................................. 189 Recanalization of the Embolically Occluded Middle Cerebral Artery in Acute Stroke Patients: Noninvasive Assessment and Outcome E.B. Ringelstein, R. Biniek, B. Ammeling, and P.N. Nolte ......... 192 x Contents Potential Role of Magnetic Resonance Imaging in Selecting Patients for Thrombolytic Therapy A. J. Furlan .................................................. 199 The Role of SPECT in Acute Stroke Thrombolysis B. Sperling, K. Overgaard, G. Boysen, N.A. Lassen 206 Clinical and Brain Hemodynamic Evaluations of Thrombolytic Therapy in Acute Ischemic Stroke: SPECT Study Y. Okada, S. Sadoshima, M. Katsuragi, K. Irie, H. Utsunomiya, and M. Fujishima ............................................. 212 The Relevance of Neurological and Functional Outcome Scales for Acute Stroke Trials A. Ferbert and K. Willmes ..................................... 217 Discussion Summary: Diagnosis and Assessment of Outcomes in Acute Cerebral Ischemia Chaired by S. M. Otis and L. Wechsler ........................... 224 Ancillary Therapy for Cerebrovascular Reperfusion Neuronal Protection and Recanalization Strategies: Is More Better? J. Grotta ..................................................... 229 Strategies Which Decrease Post-Reperfusion Lipid Peroxidation E. D. Hall .................................................... 239 Anti-PMN Leukocyte Strategies and Their Application to Focal Cerebral Ischemia G. W. Schmid-SchOnbein and G. J. del Zoppo ..................... 245 Von Willebrand Factor as a Thrget for Antithrombotic Intervention Z. M. Ruggeri ........ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 256 Neuronal Protection: Is There a Role for Gangliosides or Ca2+ -Channel Blockers? G.-L. Lenzi, H. Baasch, and R. Bruno..... . . . .... .... . ... . ...... 265 Discussion Summary: Ancillary Therapy for Cerebrovascular Reperfusion Chaired by M. Hennerici and P. Lyden .......................... 271 Contents XI Open Communications A Meta-Analysis of All Published Data on the Use of Thrombolytic Therapy to Treat Acute Ischemic Stroke J. M. Wardlaw and C. P. Warlow ................................ 275 Causes of Delayed 1J:eatment of Stroke Patients Enrolled in t-PA Protocols M. J. Alberts and A. Perry ..................................... 278 A Demming Approach to Recruiting: The National Institute of Neurological Disease and Stroke (NINDS) t-PA Stroke 1J:ial Experience B. C. Tilley for The NINDS t-PA Stroke 1J:ial Investigators ......... 282 Local Intra-arterial FibrinolytiC Therapy Within the Cerebral Arteries: Effectiveness of rt-PA Concerning Recanalization Rate and Time H. Zeumer, H.-J. Freitag, F. Zanella, A. Thie, and C. Arning ....... 285 Relation of Thrombolytic Reperfusion and of Collateral Circulation to Outcome in Patients Suffering Cerebral Main Artery Occlusion A. B. Brucker, H. Potuschak, E. Laich, J. 1J:enkler, H. Be>hm-Jurkovic, and E. Deisenhammer ........................ 288 Factors Related to Intracranial Hematoma Formation in Patients Receiving t-PA for Acute Ischemic Stroke D. E. Levy, T. Brott, E. C. Haley, Jr., and J. R. Marler ............. 294 1J:anscranial Doppler Sonographic (TCD) Monitoring of Basilar Artery Thrombolysis M. A. Williams, A. Y. Razumovsky, M. N. Diringer, L. H. Monsein, G. M. Debrun, R. Nick Bryan, and D. F. Hanley .................. 298 HMPAO SPECT Measures Reperfusion After Thrombolytic Therapy in Acute Stroke A. E. Baird, G. A. Donnan, M. C. Austin, G. J. Fitt, and W. J. McKay 301 A Cell Culture Model of Reperfusion Injury: Neutrophil-Mediated Brain Endothelial Cytotoxicity D. C. Hess, X. Chen, A. Griezkiewicz, and J. Catravas 304 Modification of Brain Ischemia Due to Embolic Stroke by Tissue-1yPe Plasminogen Activator With and Without Heparin in a Rabbit Model o. L.P. Carter, A.N. Guthkelch, J. Orozco, and Temeltas .......... 308 XII Contents Reduction of Infarct Volume and Mortality by Thrombolysis with rt-PA in an Embolic Stroke Model T. Sereghy, K. Overgaard, G. Boysen, H. Pedersen, and N. H. Diemer 311 Discussion Summary: Open Communications Chaired by E. Feldmann and A. J. Furlan ........................ 316 Clinical Dial Development Clinical 1tials Sponsored by Companies versus the NIH J. P. Mohr and D. E. Levy ...................................... 323 Blindness and Thrombolysis D. Stump and J. Breed ........................................ 327 Subject Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
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