Document Type: Special Articles

Authors

1 Department of Neurology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

2 Department of Neurology, Neuro cognitive Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

3 Department of Social Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.

Abstract

Background: Previous literatures have shown a transient ischemic attack  (TIA) mimic rate  of 9-31%. We aimed  to ascertain the proportion of stroke mimics amongst suspected TIA patients. Methods: A prospective observational study was performed in   Ghaem   Hospital,   Mashhad,   Iran   during   2012-2013. Consecutive TIA patients  were identified in a stroke center. The  initial diagnosis  of TIA  was made  by the  resident  of neurology and final diagnosis of true TIA versus TIA mimics was made after 3 months follow-up by stroke subspecialist. Results: A total of 310 patients  were assessed  during a 3- month period of which 182 (58.7%) subjects were male and 128 (41.3%) were female. Ten percent  of the patients  was categorized  as a TIA mimic. The presence  of hypertension, aphasia, duration of symptoms, and increased age was the strongest predictor  of a true  TIA. Migraine was the  most common etiology of stroke mimic in our study. Conclusion:  It  seems  that  many  signs  and  symptoms have low diagno tic  usefulness for discrimination of true TIA from non-cerebrovascular events and predictive usefulness of any sign or symptom should be interpreted by a stroke neurologist.