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【多选题】
关于室间隔缺损下列哪些是正确的（）A.
大型缺损伴有明显肺动脉高压，出现，此时心脏杂音较轻但肺动脉第2音亢进
B.
可形成梗阻型肺动脉高压
C.
有时因扩张的肺动脉压迫喉返神经，可引起声音嘶哑
D.
分流量大，易导致充血性心力衰竭
E.
不管缺损大小均有症状
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