呼吸衰竭的病因,可按呼吸系统主要受累部位和病变的时间过程来分类。累及呼吸道神经肌肉系统、胸壁、胸外和胸内气■、肺实质和肺血管组织的疾患,都可能引起威胁生命或致死性呼吸衰竭。它们是通过各种不同的基本病理生理机制导致呼吸衰竭的,治疗途径亦各不同。但也有很多病例,是通过一种混合机制引起呼吸衰竭的。如罹有原发性肺病患者可能是由于呼吸肌疲惫而最后陷于典 The cause of respiratory failure can be classified according to the time course of the major affected parts of the respiratory system and the lesion. Involvement of respiratory neuromuscular systems, chest wall, thorax, thorax, and thoracic aids ■, lung parenchyma, and pulmonary vascular tissue disorders can cause life-threatening or fatal respiratory failure. They are caused by a variety of different basic pathophysiological mechanisms of respiratory failure, treatment is also different. However, there are also many cases of respiratory failure caused by a mixed mechanism. Patients with primary lung disease may end up in dics due to respiratory muscle exhaustion