Belwadi Aditya, Siegel John H, Singh Aadarsh, Smith Joyce A, Yang King H, King Albert I
Wayne State University, Detroit, Michigan 48201, USA.
J Biomech Eng. 2012 Jan;134(1):011006. doi: 10.1115/1.4005684.
Traumatic rupture of the aorta (TRA) remains the second most common cause of death associated with motor vehicle crashes, only less prevalent than brain injury. On average, nearly 8000 people die annually in the United States due to blunt injury to the aorta. It is observed that over 80% of occupants who suffer an aortic injury die at the scene due to exsanguination into the chest cavity. In the current study, eight near side lateral impacts, in which TRA occurred, were reconstructed using a combination of real world crash data reported in the Crash Injury Research and Engineering Network (CIREN) database, finite element (FE) models of vehicles, and the Wayne State Human Body Model - II (WSHBM). For the eight CIREN cases reconstructed, the high strain regions in the aorta closely matched with the autopsy data provided. The peak average maximum principal strains in all of the eight CIREN cases were localized in the isthmus region of the aorta, distal to the left subclavian artery, and averaged at 22 ± 6.2% while the average maximum pressure in the aorta was found to be 117 ± 14.7 kPa.
主动脉创伤性破裂（TRA）仍然是机动车碰撞相关死亡的第二大常见原因，仅次于脑损伤。在美国，每年平均有近8000人死于主动脉钝性损伤。据观察，超过80%遭受主动脉损伤的驾乘人员因胸腔内失血而当场死亡。在本研究中，利用碰撞损伤研究与工程网络（CIREN）数据库中报告的真实世界碰撞数据、车辆有限元（FE）模型以及韦恩州立人体模型II（WSHBM），重建了8起发生TRA的近侧侧面碰撞事故。对于重建的8起CIREN案例，主动脉中的高应变区域与所提供的尸检数据紧密匹配。8起CIREN案例中所有案例的平均最大主应变峰值均位于主动脉峡部区域，即左锁骨下动脉远端，平均为22±6.2%，而主动脉中的平均最大压力为117±14.7 kPa。
