每小题1分，共1分 1、 患儿7岁，曾患肺炎2次，剧烈活动后气促，有时出现发绀。查体：心前区隆起，胸骨左缘第2～3肋间可闻及Ⅱ～Ⅲ级收缩期杂音，无震颤，胸部透视肺门"舞蹈"征明显，右房、右室大。

1应首先考虑下列哪种疾病

A.室间隔缺损

B.房间隔缺损

C.艾森曼格综合征

D.法洛四联症

E.动脉导管未闭

F.心电图

G.超声心动图

H.心导管检查

I.X线胸部摄片

J.胸部CT检查

K.及时控制肺炎

L.对父母及患儿进行疾病相关的健康教育

M.应绝对卧床休息，减少耗氧

N.及时实行手术治疗，预后好

O.预防感冒，尽量防止肺部再次感染

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