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patients with a TIA and CT-verified brain lesions were older and were more likely to have higher degrees of carotid stenosis and carotid plaque ulceration,a longer duration of symptoms and a history of hypertension. With regard to prognosis,after adjusting for all known risk factors (patient characteristics)in a regression analysis,the presence of ischemic lesions observed on CT was not associated with an increased risk of ipsilateral stroke at 2 years(adjusted hazard ratio=1.00;95%CI;0.39 to 2. 58;p value=0.09).Considered in combination with other patient characteristics,the mere presence of an appropriately sited cerebral infarction on CT does not alter the prognosis(risk of ipsilateral strokes) of severely stenosed patients with TIA.Therefore,there is no clinical rationale in differentiating patients with TIA on the basis of CT findings alone. |
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