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患者，男性，45岁。因间断胸闷1，1天前于夜间突然被迫坐起，频繁咳嗽，严重气急，咳大量粉红色泡沫痰，既往患冠心病10年。对该患者正确的护理是A、多食蔬菜水果 B、取坐位，背部靠物支撑，双腿下垂 C、给温开水饮用 D、将硝酸甘油快速静脉推注 E、与麻醉科联系给予气管插管 该患者首先考虑的诊断是A、急性右心衰竭 B、急性肺气肿 C、慢性左心衰竭 D、急性左心衰竭 E、慢性右心衰竭 通过吸氧应将血氧饱和度维持在A、50%～60% B、60%～70% C、95%～98% D、70%～80% E、80%～90%
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