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The Duration of Symptoms in Transient Ischemic Attack Neurol 52:976-980, Kimura,K.,et al, 1999 See this aricle in Pubmed Article Abstract The presence of emboligenic cardiac or arterial diseases was significantly related to the duration of symptoms. With sensitivity-specificity curve analysis for detecting such diseases, the duration of symptoms could be divided into short-duration TIAs (< 60 minutes, n=41) or long-duration TIAs (>/=60 minutes, n=40). Patients with long-duration TIAs had emboligenic cardiac or arterial diseases more frequently than those with short-duration TIAs (86% versus 46%, p<0.001). Recent infarcts were also more frequent in patients with long-duration TIAs than they were in patients with short-duration TIAs (45% versus 21%, p<0.05). Short-duration and long-duration TIAs can be separated based on symptom duration of <1 hour or >/= 1 hour. Patients with long-duration TIAs should be examined more closely for the presence of cardiac and arterial diseases than those with short-duration TIAs.

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