Newborn may get respiratory distress syndrome even to death for deficiency of pulmonary surfactant and formation of pulmonary atelectasis and hyaluronic membrane in alveoli.

• 初生儿也可因缺乏肺表面活性物质；发生肺不张和肺泡内表面透明质膜形成；造成呼吸窘迫综合征；导致死亡.