结论在创伤性连枷胸患者中，肺挫伤和反常呼吸运动是引起急性呼吸窘迫综合征（ARDS）和呼吸功能衰竭的重要原因。

Conclusion Pulmonary contusion and paradoxical respiratory movement are the main reasons for acute respiratory distress syndrome (ARDS) and respiratory failure of traumatic flail chest.