【单选题】
右心衰病人常有的食欲不振、恶心、呕吐、腹痛等症状，是由于：___
A. 肺循环瘀血
B. 胃肠道瘀血
C. 交感神经反射增强
D. 迷走神经反射增强
E. 左心室扩大压迫膈肌
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答案
B
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右心衰竭患者常有的食欲减退、恶心、呕吐、腹痛等症状，是由于___
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关于妊娠合并心脏病的叙述不正确的是___
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某三级医院常年床位使用率超过100%，在计算平均护理时数时，我们用各级患者护理时数的总和除以___
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下面对群体传播的特点描述正确的是___
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王某，男，78岁，患大叶性肺炎，高热昏迷10天，10天内给予大量广谱抗生素抗感染治疗。近日护士做口腔护理时发现其口腔黏膜破溃，创面上附着白色膜状物。该患者最可能发生___
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【单选题】
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不属于医院感染的情况是___
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