Abstract
The highest risk of subsequent stroke after a TIA occurs within the first week after the index event. However, the risk of stroke recurrence (SR) remains high during the first year of follow-up. We studied the temporal pattern and predictors of SR (at 7 days and from 7 days to 1-year follow-up). Between April 2008 and December 2009, we included 1,255 consecutive TIA patients from 30 Spanish stroke centers (PROMAPA study). We determined the short-term (at 7 days) and long-term (from 8 days to 1 year) risk of SR. Patients who underwent short-term recurrence and long-term recurrence were compared with regard to clinical findings, vascular territories, and etiology. Enough information (clinical variables and extracranial vascular imaging) was assessed in 1,137 (90.6 %) patients. The 7-day stroke risk was 2.6 %. 32 (3.0 %) patients had an SR after 7-day follow-up. Multiple TIA (HR 3.50, 1.67–7.35, p = 0.001) and large artery atherosclerosis (HR 2.51, 1.17–5.37, p = 0.018) were independent predictors of early SR, whereas previous stroke (HR 1.40, 1.03–1.92, p = 0.034) and coronary heart disease (2.65, 1.28–5.50, p = 0.009) were independent predictors of late SR. Notoriously, 80 % of SR happened in the same territory of the index TIA at 7-day follow-up, whereas only 38 % during the long-term follow-up (p < 0.001). Different predictors of SR were identified throughout the follow-up period. Moreover, the ischemic mechanism differed in early and late stroke recurrences.
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Acknowledgments
This work was supported by Sanofi-Aventis.
Conflicts of interest
Dr. J. Masjuán serves on the scientific advisory board for Boehringer Ingelheim.
Dr. J.A. Egido serves on the scientific advisory board for Boehringer Ingelheim.
Ethical standard
The study was approved by the ethics committee of the Arnau de Vilanova University Hospital and all the institutions involved in the study. Written informed consent was obtained from all study participants.
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On behalf of the Stroke Project of the Spanish Cerebrovascular Diseases Study Group.
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Purroy, F., Jiménez Caballero, P.E., Gorospe, A. et al. How predictors and patterns of stroke recurrence after a TIA differ during the first year of follow-up. J Neurol 261, 1614–1621 (2014). https://doi.org/10.1007/s00415-014-7390-z
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DOI: https://doi.org/10.1007/s00415-014-7390-z