(Stroke. 1996;27:1453-1458.)
© 1996 American Heart Association, Inc.
Articles |
A Randomized Trial of Tirilazad Mesylate in Patients With Acute Stroke (RANTTAS)
the Departments of Neurology and Neurological Surgery, The Virginia Neurological Institute of the University of Virginia (Charlottesville) (Dr Haley, Dr Johnston, and others), and the participating centers of the RANTTAS Investigators.
Correspondence to E. Clarke Haley, Jr, MD, Department of Neurology, Box 394, University of Virginia Health Sciences Center, Charlottesville, VA 22908. E-mail ech@virginia.edu.
Background and Purpose Tirilazad mesylate, a nonglucocorticoid 21-aminosteroid lipid peroxidation inhibitor, has shown promise as a neuroprotectant in experimental models of focal cerebral ischemia.
Methods To test whether early treatment with tirilazad, 6 mg/kg per day for 3 days, would improve functional outcome after acute human stroke, 27 North American centers conducted a prospective, randomized, double-blinded, vehicle-controlled trial in patients with acute stroke treated within 6 hours of onset. The primary outcome measures were disability as measured by the Glasgow Outcome Scale and activities of daily living by the Barthel Index determined 3 months after stroke.
Results From May 1993 through December 1994, 660 patients were randomized. The trial was prematurely terminated on the advice of an independent monitoring committee after review of outcome data at a preplanned interim analysis. In 556 fully eligible patients (276 tirilazad, 280 vehicle), the odds ratio of a favorable outcome in favor of tirilazad was 0.87 (95% confidence interval [CI], 0.60 to 1.25) for the Glasgow Outcome Scale and 0.87 (95% CI, 0.60 to 1.25) for the Barthel Index, after adjustment for imbalances between the groups in preexisting disability, prior stroke, and diabetes.
Conclusions These observations suggest that tirilazad, 6 mg/kg per day for 3 days administered beginning at a median of 4.3 hours after stroke, does not improve overall functional outcome.
Key Words: cerebral ischemia • lipid peroxidation • neuroprotection • stroke, acute
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