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当前学科：重症监护
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某病人，男性，57岁，近日两天白天无异常感觉，但在夜间一两点时会突然惊醒，感到气急、气闷伴有阵咳、哮喘，坐起后逐渐缓解，他是出现了什么（）
A . 左心衰竭
B . 右心衰竭
C . 心力衰竭
D . 哮喘发作
E . 支气管炎发作
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肺炎