Objective:To evaluate the feasibility of transcatheter closure of patent foramen ovale(PFO)to prevent paradoxical embolism with Amplatzer occluder device.
目的：经导管封堵卵圆孔未闭（PFO）预防脑的矛盾栓塞并评价其疗效。
Conclusions: Echocardiography can be used for guidance of Amplatzer occlusion device of ASD with solid edge without the measurement of balloon expanding size of ASD.
结论：对于周缘较硬的房缺，经食管超声心动图可直接指导封堵器大小的选择和封堵。
Conclusions: Echocardiography can be used for guidance of Amplatzer occlusion device of ASD with solid edge without the measurement of balloon expanding size of ASD.
结论：对于周缘较硬的房缺，经食管超声心动图可直接指导封堵器大小的选择和封堵。
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