Emergency Administration of Abciximab for Treatment of Patients With Acute Ischemic Stroke

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Abstract

Background and Purpose— Because of its success in treatment of acute cardiac ischemia, there is interest in the use of abciximab for treating patients with acute ischemic stroke. A previous dose-escalation study determined that abciximab could be given safely in a regimen of 0.25 mg/kg intravenous bolus followed by a 12-hour infusion at 0.125 μg/kg per minute (maximum 10 μg/min). This study was performed to obtain more information about the safety and potential efficacy of abciximab in patients with stroke. Methods— An international randomized, double-blind, placebo-controlled phase 2 trial enrolled 400 patients within 6 hours of onset of ischemic stroke. The primary safety outcome was the rate of symptomatic hemorrhage that occurred during the first 5 days after stroke. The primary efficacy measure was the distribution of outcomes at 3 months after stroke using the modified Rankin Scale (mRS) based on an ordinal regression model of outcomes, adjusting for baseline severity of stroke, age, and interval from stroke. Results— Symptomatic intracranial hemorrhage within 5 days was diagnosed in 7 of 195 (3.6%) patients treated with abciximab and 2 of 199 (1%) patients given placebo (odds ratio [OR], 3.7; P =0.09; 95% confidence interval [CI], 0.7 to 25.9). Asymptomatic hemorrhagic transformation was detected by brain imaging in 24 patients administered abciximab and 33 patients receiving placebo (OR, 0.74; P =0.25; 95% CI, 0.4 to 1.3). Treatment with abciximab showed a nonsignificant shift in favorable outcomes as measured by mRS scores at 3 months (OR, 1.20; P =0.33; 95% CI, 0.84 to 1.70). Conclusions— Intravenously administered abciximab can be given to patients with a reasonable degree of safety. The trial also suggests that abciximab could improve outcomes at 3 months after stroke. A larger randomized, double-blind, placebo-controlled trial is necessary to test the efficacy of abciximab.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Advanced and Specialised Nursing,Cardiology and Cardiovascular Medicine,Clinical Neurology

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