对２８例严重创伤及感染后成人呼吸窘迫综合征（ＡＲＤＳ）病人进行回顾性分析。结果发现，存活组与死亡组上机前的ＰａＯ２差异有显著意义，后者氧分压明显低下，两组ｐＨ和ＢＥ的差异呈极显著意义，死亡组上机前ｐＨ下降，ＢＥ为负值，呈代谢性酸中毒改变，上机后亦无明显改善。８例作血流动力学监测的病人中，４例表现为高排低阻型，肺动脉压力（ＰＡＰ）增高，另有３例肺动脉楔压高于正常。全组病人共有２１例发生多脏器功能衰竭（ＭＯＦ），死亡者全部合并ＭＯＦ，不合并ＭＯＦ者全部存活。提示诊断、治疗不及时和ＭＯＦ是引起死亡的重要因素。 28 patients with severe trauma and post-infection adult respiratory distress syndrome (ARDS) were retrospectively analyzed. The results showed that PaO2 was significantly different between survivors and death patients, the latter was significantly lower oxygen partial pressure, the difference between the two groups of pH and BE was extremely significant, death before the machine decreased pH, BE was negative , Was metabolic acidosis change, no significant improvement on the machine. Of the 8 patients who underwent hemodynamic monitoring, 4 showed high-row and low-resistance patterns and increased pulmonary artery pressure (PAP), and another 3 had wedge pressure higher than normal. All patients in a total of 21 cases of multiple organ failure (MOF), the death of all combined MOF, non-merger MOF all survived. Prompt diagnosis, treatment is not timely and MOF is an important factor in causing death.