Abstract: In recent years, there has been a common perspective among experts that posterior circulation ischemia(PCI) includes posterior circulation transient ischemic attack(TIA) and posterior circulation infarction. The usual causes of PCI are atherosclerosis, embolism, subclavian steal syndrome, and so on. The typical clinical appearance is vertigo, usually accompanied by symptom and sign of brain stem and cerebellum. We have to diagnose PCI through history, physical examination and neuroimaging. Major treatment is medicine, supplemented by surgical and endovascular treatment. So this article provides an overview of epidemiology, etiology, clinical characters, diagnosis, and therapy of the PCI according to the papers in recent 10 years.

Key words: Brain infarction; Epidemiology; Signs and symptoms; Diagnosis; Therapy

摘要： 近些年，专家共识认为后循环缺血（posterior circulation ischemia,PCI）包括后循环短暂性脑缺血发作（transient ischemic attack,TIA）和后循环梗死。后循环缺血常见的病因为动脉粥样硬化、栓子脱落、锁骨下动脉盗血综合征等；典型的临床表现为眩晕，并常伴有脑干、小脑部位的症状体征；诊断主要依靠详细的病史、查体和神经放射影像学检查；治疗以药物治疗为主，可辅助外科手术治疗和血管内治疗。本文结合近十年来国内外发表的文献从后循环缺血流行病学、常见病因、临床特征、诊断、治疗及预后等方面进行阐述。

关键词: 脑梗死; 流行病学; 体征和症状; 诊断; 治疗