颈动脉系统TIA病人血液流变学和脑血流速度的改变

The Clinical Importance of Blood Rheology and Cerebral Blood Velocity In TIA of Carotid System

目的 探讨颈内动脉系统短暂性脑缺血发作 (TIA)病人的血液流变学和脑血流速度的改变及其临床意义。方法 6 0例颈内动脉系统 TIA病人均在末次发作后 2 4h内进行血液流变学和脑血流速度测定。结果 1病人组的全血粘度、血浆粘度、红细胞压积及红细胞聚集性各指标均明显增高 ,与正常对照组比较有显著性差异 ;2绝大多数患者脑动脉有严重狭窄或痉挛存在 ,从而引起脑血流速度的改变。结论 血液粘度增高。

Objective To probe the changes and the clinical importance of the blood rheology and cerebral blood velocity in TIA of carotid systems Methods The blood rheology and cerebral blood velocity of 60 cases with carotid TIA in 24h from the last onset of symptoms were investigated and compared with control groups Results ①The whole blood constrast viscosity, plasma viscosity, hematorit, Erythrocyte aggregation were significantly higher than those of control group(P<0 01),had statistic meanings ②Much most of the patients had serious stenosis or spasm of cerebral artery, and the cerebral blood velocity changes Conclusion The abnormal of blood rheology and cerebrovascular hemodynamics index are two pathogenic mechanisms of TIA