HealthDay News – Canada’s TIA (Transient Ischemic Attack) score effectively stratifies 7-day stroke risk in emergency room patients with TIA. This emerges from a study that was published online on February 4th in the BMJ.
Jeffrey J. Perry, MD, of the University of Ottawa in Ontario, Canada, and colleagues performed a validation study of the previously derived Canadian TIA score to stratify subsequent stroke risk in 7,607 consecutive patients who finished 13th over a five-year period Canadian emergency rooms were treated for TIA.
The researchers found that 1.4 percent of patients had a subsequent stroke within seven days, 1.1 percent had a carotid endarterectomy / artery stenting within seven days, and nine had both. Compared to the ABCD2 score (area under the curve, 0.60) or the ABCD2i score (area under the curve, 0.64), the Canadian TIA score (area under the curve, 0.70) stratified the risk for Stroke, carotid endarterectomy / carotid artery more precisely stenting or both within seven days as low (risk ≤ 0.5 percent; interval probability ratio 0.20; 95 percent confidence interval 0.09 to 0.44), medium (risk 2.3 percent; Interval probability ratio 0.94; 95 percent confidence interval; 0.85 to 1.04) and high (risk 5.9 percent; interval probability ratio 2.56; 95 percent confidence interval 2.02 to 3.25). Subsequent stroke risk outcomes were similar regardless of carotid endarterectomy / stenting of the carotid artery within seven days.
“Incorporating this validated risk estimate into management plans should improve early decision-making in the index emergency visit regarding the benefits of hospitalization, timing of exams, and prioritization of professional referral,” the authors write.
Abstract / full text
Transient ischemic stroke with cardiac stroke