C-reactive protein predicts further ischemic events in transient ischemic attack patients

F Purroy, J Montaner, C A Molina, P Delgado, J F Arenillas, P Chacon, M Quintana, J Alvarez-Sabin
Acta Neurologica Scandinavica 2007, 115 (1): 60-6

BACKGROUND AND PURPOSE: Although patients with transient ischemic attack (TIA) experience cardiovascular events frequently, strong clinical predictors of recurrence are lacking. High-sensitivity C-reactive protein (hs-CRP) has been shown to be a powerful predictor of future first-ever and recurrent coronary and cerebral ischemic events. We aimed to investigate the relationship between hs-CRP and the risk of further ischemic events in TIA patients.

METHODS: High-sensitivity C-reactive protein level was determined <24 h after symptom onset among 135 consecutive TIA patients and stroke recurrence or any new vascular event was recorded during 1 year follow-up period.

RESULTS: A total of 38 (28.1%) patients experienced an end point event: 28 (20.7%) cerebral ischemic events, six (4.4%) heart ischemic events, four (3%) peripheral arterial disease, and nine (6.7%) vascular deaths. Cox proportional hazards multivariate analyses identified age [hazard ratio (HR) 1.07, 95% confidence interval (CI) 1.01-1.12, P = 0.01], large-artery occlusive disease (HR 2.73, 95% CI 1.16 to 6.41, P = 0.02) and hs-CRP> 4.1 mg/l (HR 2.81, 95% CI 1.12-7.10, P = 0.03) as independent predictors of stroke. Moreover, age (HR 1.05, 95% CI 1.01-1.10, P = 0.02), large-artery occlusive disease (HR 3.12, 95% CI 1.48-6.58, P < 0.01), coronary disease (HR 2.39, 95% CI 1.11-5.16, P = 0.03), and hs-CRP> 4.1 mg/l (HR 2.71, 95% CI 1.16-6.30, P = 0.02) were also independent predictors of any vascular event.

CONCLUSIONS: High-sensitivity C-reactive protein serum level predicts further ischemic events following TIA. Routine CRP measurement might be a useful tool for identifying high-risk TIA patients in order to plan aggressive diagnostic protocols and prevention therapies.

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