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Secondary stroke prevention with ximelagatran versus warfarin in patients with atrial fibrillation - Pooled analysis of SPORTIF III and V clinical trials
Secondary stroke prevention with ximelagatran versus warfarin in patients with atrial fibrillation - Pooled analysis of SPORTIF III and V clinical trials 14th European Stroke Conference Akins, P. T., Feldman, H. A., Zoble, R. G., Newman, D., Spitzer, S. G., Diener, H., Albers, G. W. LIPPINCOTT WILLIAMS & WILKINS. 2007: 874–80Abstract
Patients with nonvalvular atrial fibrillation and prior stroke or transient ischemic attack (TIA) are at high risk for recurrent stroke. We investigated whether ximelagatran was noninferior to warfarin in patients with prior stroke or TIA.We analyzed pooled data from the SPORTIF III and V trials in patients with prior stroke/TIA. The primary outcome was the composite annual rate of both ischemic and hemorrhagic strokes and systemic embolic events. Secondary analyses considered ischemic and hemorrhagic strokes separately, bleeding, and nonrandomized, concomitant therapy with aspirin < or =100 mg/d.Patients from SPORTIF III (n=3407) and SPORTIF V (n=3922) trials were categorized by prior stroke/TIA (21%) versus no prior stroke/TIA (79%) and by treatment group (ximelagatran vs warfarin). The primary event rate in patients with prior stroke/TIA was 2.83%/y with ximelagatran and 3.27%/y with warfarin (absolute difference, -0.44%; 95% CI, -1.88 to1.01; P=0.625). In those without prior stroke/TIA, the primary event rate was 1.31%/y with ximelagatran and 1.26%/y with warfarin (P=NS). Ischemic strokes outnumbered cerebral hemorrhages with both warfarin (31 of 36) and ximelagatran (30 of 32) treatment (difference between treatments was not significant). Combining aspirin with either anticoagulant was associated with higher rates of major bleeding (1.5%/y with warfarin and 4.95%/y with warfarin plus aspirin, P=0.004; 2.35%/y with ximelagatran and 5.09%/y with ximelagatran plus aspirin, P=0.046) but not lower rates of primary events.Ximelagatran was at least as effective as well-controlled warfarin for the secondary prevention of stroke. The nonrandomized, concomitant treatment with aspirin and anticoagulation was associated with increased bleeding without evidence of a reduction in primary outcome events.
View details for DOI 10.1161/01.STR.0000258004.64840.0b
View details for Web of Science ID 000244482500017
View details for PubMedID 17255547