常规机械通气能提高呼吸窘迫综合征病人的生存率,但其发病机理复杂,在重症监护病房仍是一个重要问题。该综合征的突出特点是因血液在肺内分流造成的低氧血症和因肺表面活性物质受损或缺如造成的肺顺应性下降。经氧合的过氟化碳液因其低表面张力及能溶解大量气体的特点,对表面活性物质缺如的肺可做为改善呼吸的介质。动物实验已证实,用过氟化 Routine mechanical ventilation can improve the survival rate of patients with respiratory distress syndrome, but its pathogenesis is complex and still an important issue in the intensive care unit. The salient features of this syndrome are hypoxemia due to blood shunting in the lungs and decreased lung compliance due to impaired or absent lung surfactant. Oxygenated perfluorocarbon liquid because of its low surface tension and can dissolve a large number of gases, lack of surfactant on the lungs can be used as breathing medium. Animal experiments have confirmed that used fluoride