下列哪一种先心病会形成代偿性支气管动脉侧支循环() ["A．Roger病","B．法洛四联症","C．房间隔缺损","D．室间隔缺损","E．动脉导管未闭"]
上行直流电
诱发电位
法洛四联症患儿突然晕厥最可能的原因() ["A．长期缺氧所致","B．血液粘滞、血流变慢而引起脑血栓","C．肺动脉漏斗部狭窄的基础上，突然发生该处肌部痉挛","D．合并脑膜炎","E．主动脉骑跨严重程度"]
下列哪一种先天性心脏病X线检查示肺缺血改变() ["A．房间隔缺损","B．室间隔缺损","C．动脉导管未闭","D．法洛四联症","E．以上都不是"]
失神经过敏(DS)
