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目的 建立犬胸腔枪弹伤致伤模型 ,探讨早期致死原因和早期救治效果 .方法 杂种犬 13条 ,小口径步枪制式子弹致伤 ,随机分成胸腔贯通伤 (模型 )组 ( n=7)和伤后早期救治组 ( n=6 ) .测致伤参数 ,观察呼吸和循环的动态变化及病理学改变 .结果 两组致伤参数无差异 .模型组死亡 6例( 86 % ) ,其中 4例死于胸腔大出血 ,2例死于呼吸衰竭 .救治组死亡 5例 ( 83% ) ,胸腔大出血为主者 3例 ,另 2例分别死于呼吸衰竭和股动脉测压处出血 .死亡犬伤后平均存活时间 :模型组 5 2 min,明显短于救治组 2 6 0 min.结论 1按本组致伤参数可建立犬胸腔枪弹伤致伤模型 .其创道恒定 ,病理解剖有肺损伤和血气胸 ,重复性好 ,且与人类胸腔枪弹伤死亡率近似 ;2早期死亡主要与胸腔大出血、急性呼吸衰竭有关 .胸腔大出血主要来自肋间动脉 ;3早期救治可明显延长存活时间 .改进救治措施 ,杜绝救治失误 ,有望进一步提高长期存活率
Objective To establish a model of canine thoracentesis injury and discuss the causes of early lethal and early treatment.Methods Thirteen dogs were randomly divided into thoracic injury model group (n = 7) and post-injury The early treatment group (n = 6) measured the parameters of injury and observed the changes of respiratory and circulatory changes and pathological changes.Results There was no difference in the injury parameters between the two groups.The death of model group was 6 (86%), of which 4 died Thoracic hemorrhage and 2 died of respiratory failure.The treatment group died in 5 cases (83%), thoracic hemorrhage was mainly in 3 cases, the other 2 died of respiratory failure and femoral artery pressure measurement place hemorrhage. Time: The model group 5 2 min, was significantly shorter than the treatment group 260 min.Conclusion 1 Injury model of canine thoracic gunshot wound can be established according to the injury parameters of this group.Its pathology is consistent with pathological anatomy of lung injury and pneumothorax, With good repeatability and similar mortality rate to human thoracic gunshot wound.2 The early death was mainly related to thoracic hemorrhage and acute respiratory failure.The thoracic hemorrhage was mainly from the intercostal artery.3 The early treatment could significantly prolong the survival time.Improved treatment measures, No treatment error, is expected to further improve the long-term survival rate