Broken, tracheobronchial, lung 1aceration, hemathorax, rib fracture, pulmonary contsion and cardiovascular injury incurred by BCT are those risking factors of death.

• BCT所引起的气管支气管断裂、肺撕裂伤、血胸、肋骨骨折、肺挫伤以及心血管损伤等都是导致死亡的危险因素。