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对近２０年收治的５２６例短暂性脑缺血发作（ＴＩＡ）患者的临床资料进行了回顾性分析，结果显示：①ＴＩＡ发作时间为偏态分布，其中９５％的患者发作时间在２．６５小时以内，９９％在５．３７小时以内；②在１９８例有ＣＴ或ＭＲＩ资料的ＴＩＡ病例中，发现６２例有与症状一致的梗塞灶，其中５８例发作时间持续３小时以上，并且梗塞灶的出现与发作时间的长短呈正相关；③在１６７例有随访资料的病例中，１３１例发生脑梗塞，其发生机率与ＴＩＡ发作时间的长短呈正相关。因此认为，传统ＴＩＡ概念中的发作时间应调整为３小时内为宜，此与现代病理学与影像学结论相符，同时也有利于临床脑梗塞的诊治（特别是溶栓治疗）的顺利开展。
The clinical data of 526 patients with transient ischemic attack (TIA) admitted in the past 20 years were retrospectively analyzed. The results showed that: ① The onset of TIA was skewed, with 95% of the patients having episodes of 2.65 hours , 99% within 5.37 hours; ② In 198 cases of TIA with CT or MRI data, 62 cases were found consistent with the symptoms of infarction, of which 58 cases last more than 3 hours, and the infarction There was a positive correlation with the length of the attack time. ③ Among the 167 cases with follow-up data, 131 cases had cerebral infarction, and the incidence rate was positively correlated with the duration of TIA. So that the traditional concept of TIA attack time should be adjusted within 3 hours is appropriate, which is consistent with the conclusions of modern pathology and imaging, but also conducive to clinical diagnosis and treatment of cerebral infarction (especially thrombolytic therapy) carried out smoothly.