猪胸部枪弹伤后眼组织超声显像早期观察

目的：探讨猪胸部枪弹伤远达效应致眼部组织结构及血流动力学改变的规律及意义，为平战时胸部枪弹伤伤病员的早期、全面救治提供参考依据。方法：采用高速弹射击10只猪（20只眼），建立胸部枪弹伤动物模型，利用超声显像技术对动物模型致伤前、后不同时相点的眼部组织结构及视网膜中央动脉血流动力学进行研究，并与眼组织病理做对照分析。结果：（1）伤后眼形态大小正常，2只眼玻璃体后脱离，4只眼玻璃体混浊，球后未见异常回声；（2）彩色多普勒血流成像显示致伤前后视网膜中央动脉血流频谱形态无变化。伤后24h内，视网膜中央动脉的血流动力学参数有显著改变，血流速度减慢，阻力指数增高。结论：胸部枪弹伤后部分眼的二维超声显像有显著改变，视网膜中央动脉血流速度低、阻力大；高频二维超声和彩色多普勒血流成像技术为胸部枪弹伤后早期眼组织变化提供准确的参考依据，对提高临床救治水平，防治眼部并发症具有重要价值。

Early observation of eye remote effect of gunshot wound in chest by ultrasonography in pigs

Objective:To investigate the application of ultrasonography to early diagnosis of eye remote effect of gunshot wound in chest.Methods:The model of thoracic gunshot wound was established by rapid firing at the chest in 10 pigs(20 eyes).The eye tissue structure,pathological changes and hemodynamics of central retinal arteries were observed and compared at different time points by means of high-frequency two-dimensional color Doppler flow imaging after the injury.Results:After the injury,the size of all eyes w...