椎-基底动脉供血不足(VBI)是脑动脉系统最常见的一种缺血性疾病,是指多种原因引起椎-基底动脉系统的一过性缺血而出现眩晕等症状。本病以中老年人居多,但近年来有年轻化趋势,且常为脑梗死先兆,本文通过256病例分析,探讨该疾病的临床表现及诊断。1临床资料1.1病例来源选自2005年至2010年于我科诊治的VBI Vertebrobasilar insufficiency (VBI) is one of the most common ischemic diseases in the cerebral arterial system. It refers to the symptoms of dizziness caused by transient ischemia of vertebrobasilar system due to various reasons. The disease is mostly in the elderly, but in recent years there is a trend of younger, and often a precursor to cerebral infarction, this article through 256 case analysis to explore the clinical manifestations of the disease and diagnosis. 1 Clinical data 1.1 The source of the cases selected from 2005 to 2010 in our department for diagnosis and treatment of VBI