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心源性脑栓塞占缺血性中风的15～20％,自应用超声心动图以来,经过未闭卵圆孔(Patent foramen ovale,PFO)的反常栓子(paradoxical enboli)作为中风的可能机制的证据不断增多,作者用经颅多普勒(TCD)结合增强探测急性缺血性中风或短暂性脑缺血发作(TIA)与PFO病人中反常栓子进入前,后脑循环是否存在优势分布。
Cardiogenic brain embolism accounts for 15-20% of ischemic stroke and since paradoxical emboli (PFO) of the patent foramen ovale (PFO) has been used as a possible mechanism of stroke since echocardiography There is increasing evidence that the authors use transcranial Doppler (TCD) in combination to detect whether there is a predominant distribution of anterior and posterior cerebral circulation in patients with acute ischemic stroke or transient ischemic attack (TIA) and PFO.