Published online before print December 29, 2004, doi: 10.1161/01.STR.0000152331.93770.18
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(Stroke. 2005;36:292.)
© 2005 American Heart Association, Inc.
Original Contributions |
Aggressive Mechanical Clot Disruption
A Safe Adjunct to Thrombolytic Therapy in Acute Stroke?
From the Departments of Neurology (E.A.N., H.M.S., C.E.H., A.V.A., Z.G., J.C.G.), and Radiology (E.D.C.), University of Texas-Houston Medical School; the Institute for Neurology and Neurosurgery (J.K.S.), Beth Israel Hospital, New York, NY; and the Alabama Neurological Institute (M.S.C.), Birmingham.
Correspondence to Dr Morgan S. Campbell, Director of Interventional Neurology, Alabama Neurological Institute, 513 Brookwood Boulevard, Suite 405, Birmingham, AL 35209. E-mail mcampbell{at}TheANI.org
Background and Purpose— This study evaluated the safety and efficacy of aggressive mechanical clot disruption (AMCD) in acute stroke patients with persisting middle cerebral artery (MCA) or internal carotid artery (ICA) occlusion after thrombolytic therapy.
Methods— Retrospective case series were used from a prospectively collected stroke database on consecutive acute ischemic stroke patients treated with intra-arterial (IA) thrombolytics and mechanical clot disruption during a 5-year interval. Thrombolytic dosage, endovascular techniques, immediate and final recanalization rates, symptomatic hemorrhage, mortality, and outcome were determined.
Results— Thirty-two patients received AMCD. Median baseline National Institutes of Health Stroke Scale (NIHSS) score was 18, and median time to initiation of IA treatment was 261 minutes from symptom onset. ICA occlusion was noted in 16 patients and MCA occlusion in 16 patients: 22 received combined IV/IA thrombolytics, 3 received IV thrombolytics, 6 received IA thrombolytics, and 1 patient received no thrombolytics before AMCD. No immediate periprocedural complications were noted. Immediate recanalization was achieved in 38% (50% MCA, 25% ICA) and final recanalization in 75% (88% MCA, 63% ICA) of patients. Favorable outcome occurred in 19 (59%) patients, symptomatic cerebral hemorrhage in 3 (9.4%) patients, and mortality in 4 (12.5%) patients.
Conclusion— AMCD can be performed safely with comparable intracerebral hemorrhage and mortality rates to other IA therapies even after use of intravenous thrombolytics in selected patients. Early deployment of this technique leads to immediate recanalization in one third of patients. AMCD may potentially shorten the time to flow restoration and improve overall recanalization rates achieved with IA therapy.
Key Words: angioplasty, balloon • endovascular therapy • stroke, acute • thrombolytic therapy
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