脑分水岭梗塞临床特征的研究

Clinical features of cerebral watrshed infarctions

目的 研究脑分水岭区梗塞（ Ｃ Ｗ Ｉ） 的临床特征。方法 对７８ 例经颅脑 Ｃ Ｔ 或 Ｍ Ｒ Ｉ确诊的 Ｃ Ｗ Ｉ从发病因素、 Ｃ Ｔ及 Ｍ Ｒ Ｉ显示的病灶特征、临床症状体征的特点进行研究。结果 体循环低血压、颈动脉狭窄或闭塞和微栓塞是 Ｃ Ｗ Ｉ的主要原因。 Ｃ Ｗ Ｉ在 Ｃ Ｔ 或 Ｍ Ｒ Ｉ显示的病灶形态为楔形。其中皮层型４６ 例（５８ ．９ ％ ） ，皮层下型３２ 例（４１ ．１ ％ ） 。结论 Ｃ Ｗ Ｉ是一类特殊的脑梗塞，有自己的好发因素、独特的病灶部位和形态以及特征性的症状体征，不同于脑血栓形成和腔隙性脑梗塞，值得临床重视。

Objectives To study the clinical features of cerebral watershed infarctions(CWI). Methods 78patients of CWI confirmed by cerebral CT or MRI were studied on their causes, features of focuses,clinical symptoms and signs.Results Hypotonia of circulatory system,stenosis or colsure of carotid artery and tiny embolization are the main reasons of CWI.The shape of CWI showed on CT or MRI is often coniform. 46(58.9%)patients are of cerebral cortex type and the other 32(41.1%)patients belong to cerebral subcortical type.Conclusions Unlike cerebral thrombosis and lacunar cerebral infarctions,CWI is a special kind of cerebral infarctions which has it's own susceptable causes,unique site and shape of focuses,characteristic symptoms and signs