问题
单项选择题
慢性肺源性心脏病肺心功能失代偿期治疗的中心环节是（）
A.做呼吸操
B.预防上呼吸道感染
C.纠正缺氧和二氧化碳潴留
D.低盐饮食
E.注意神志变化
答案
参考答案：C
解析：此题考查慢性肺源性心脏病肺心功能失代偿期治疗的原则，此时患者需要解决的首要问题是缺氧和二氧化碳潴留。
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慢性肺源性心脏病肺心功能失代偿期治疗的中心环节是（）
A.做呼吸操
B.预防上呼吸道感染
C.纠正缺氧和二氧化碳潴留
D.低盐饮食
E.注意神志变化
参考答案：C
解析：此题考查慢性肺源性心脏病肺心功能失代偿期治疗的原则，此时患者需要解决的首要问题是缺氧和二氧化碳潴留。
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