、概念与分类( Concept& Classification) 1.呼吸衰竭( Respiratory Failure) 在海平面静息状态吸入空气的情况下,由于肺通气和(或)换 气功能的严重障碍,以致P尸aO2低于8.0kPa(<60mmHg),伴有或 不伴有PaCO2高于6.67kPa(50mmHg)的病理过程。 Respiratory failure is a syndrome in which the respiratory system fails in one or both of its gas exchange functions oxygenation and carbon dioxide elimination In practice, respiratory failure is defined as a Pao2 value of less than 60 mm Hg while breathing air or a Paco2 of more than 50 mm Hg. (mmHg=millimeter hydrargyrumConcept & Classification Respiratory failure is a syndrome in which the respiratory system fails in one or both of its gas exchange functions: oxygenation and carbon dioxide elimination. In practice, respiratory failure is defined as a PaO2 value of less than 60 mm Hg while breathing air or a PaCO2 of more than 50 mm Hg. （mmHg=millimeter hydrargyrum）