急性呼吸衰竭是以低氧血症为特征的急性起病的呼吸衰竭,其中急性呼吸窘迫综合征(ARDS)最为常见。近年来的研究显示机械通气明显降低急性呼吸衰竭患者的病死率,已成为重要的病因治疗手段。对急性呼吸衰竭的机械通气原则进行再评价,显然具有明显的临床价值。一、机械通气的生理与 Acute respiratory failure is an acute onset of respiratory failure characterized by hypoxemia, of which acute respiratory distress syndrome (ARDS) is the most common. In recent years, studies have shown that mechanical ventilation significantly reduce the mortality of patients with acute respiratory failure, has become an important cause of treatment. Reassessment of the principles of mechanical ventilation for acute respiratory failure clearly has significant clinical value. First, the physiological and mechanical ventilation