Age,GCS scoring,traumatism of chest,and inbreathing puke are the risk factors for severe brain injury complicated with ARDS and PaO 2/FiO 2 is the important index in estimating the development of traumatism.

• 年龄、GCS评分、胸部外伤程度、呕吐误吸是重型颅脑损伤并发急性呼吸窘迫综合征的危险因素 ,PaO2 /FiO2 是判断伤情发展趋势的重要指标。