【单选题】
左心功能不全所致呼吸困难提示___
A. 上腔静脉淤血
B. 肺淤血
C. 体静脉淤血
D. 门静脉淤血
E. 下腔静脉淤血
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答案
B
解析
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儿童，5岁，吃饭时常把饭碗打破，屡受家长斥责。一次吃饭时，其母发觉小孩眼睛发直，随即饭碗坠地，数秒钟后正常，最有可的诊断是___
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【单选题】
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【单选题】
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【单选题】
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D. not stated here
