新生儿肺泡内降低表面张力的物质(表面活性物质)的缺乏是引起呼吸窘迫综合征(RDS)的主要病因。羊水中的表面活性物质主要来源于胎儿。RDS是一种严重的新生儿肺部疾患。与其他单一的疾病相比,更易引起新生儿死亡。已有人发现肺泡内表面活性物质缺乏系主要的病因学缺陷,可导致肺泡内表面张力 The lack of substances (surface-active substances) that reduce surface tension in neonatal alveoli is the leading cause of respiratory distress syndrome (RDS). Amniotic fluid mainly derived from surfactant in the fetus. RDS is a serious neonatal lung disease. Compared with other single diseases, more likely to cause neonatal deaths. It has been found that the lack of alveolar endosuppressive agents is a major etiologic factor that can cause alveolar internal surface tension