诊断呼吸衰竭的血气标准是A.PaO<65mmHg和(或)伴有PaCO>55mmH

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问题 诊断呼吸衰竭的血气标准是A.PaO<65mmHg和(或)伴有PaCO>55mmHgB.PaO<50mmHg和(或)伴有PaCO>60mmHgC.PaO<60mmHg和(或)伴有PaCO>55mmHgD.PaO<60mmHg和(或)伴有PaCO>50mmHgE.PaO<65mmHg和(或)伴有PaCO>50mmHg

选项 A.PaO<65mmHg和(或)伴有PaCO>55mmHgB.PaO<50mmHg和(或)伴有PaCO>60mmHgC.PaO<60mmHg和(或)伴有PaCO>55mmHgD.PaO<60mmHg和(或)伴有PaCO>50mmHgE.PaO<65mmHg和(或)伴有PaCO>50mmHg

答案 D

解析 此题考查呼吸衰竭诊断的血气标准。在海平面静息状态下,呼吸空气时,PaO<60mmHg(8kPa)和(或)伴有PaCO>50mmHg(6.67kPa)为呼吸衰竭。【该题针对“基础知识-呼吸衰竭病因及发病机制、分型、缺O和CO潴留对机体的影响、辅助检查”知识点进行考核】
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