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目的探讨短暂性脑缺血发作持续时间和磁共振弥散加权成像(MRI-DWI)特征与临床预后的关系。方法回顾性分析43例TIA患者的临床资料,分为TIA持续时间≤1h组(20例)和1～24h组(23例),分析头颅核磁共振弥散加权成像(MRI-DWI)显影率特点,对两组患者1年后进行随访,分析脑梗死发生率与持续时间和影像学特点的关系。结果TIA持续时间≤1h组3例头颅MRI-DWI异常,持续时间1～24h组19例头颅MRI-DWI异常。1年后随访结果:持续时间≤1h组1例发生脑梗死,持续时间1～24h组16例发生脑梗死。结论TIA持续时间长、头颅MRI-DWI异常率高的病例发生脑梗死的几率高,其临床预后差。
Objective To investigate the relationship between the duration of transient ischemic attack and MRI-DWI features and clinical prognosis. Methods The clinical data of 43 patients with TIA were retrospectively analyzed. They were divided into TIA duration ≤1h group (n = 20) and 1 ~ 24h group (n = 23). The MRI features of MRI-DWI were analyzed. The patients in both groups were followed up for one year and analyzed the relationship between the incidence of cerebral infarction and the duration and imaging features. Results The MRI findings of MRI were abnormal in 3 cases of TIA for 1 hour or less in TIA group, and 19 cases were abnormal in MRI. One year follow-up results: 1 case of cerebral infarction lasting for 1h, duration of 1 ~ 24h group of 16 cases of cerebral infarction. Conclusions The long duration of TIA and the high rate of MRI-DWI in the skull are associated with a high incidence of cerebral infarction and poor prognosis.