犬肠管破裂伤合并海水浸泡后血流动力学及病理学变化

目的 分析犬肠管破裂伤合并海水浸泡后血流动力学及病理学变化的特点，为海战肠管破裂伤的早期救治提供理论依据。方法 成年杂种犬30只，制作肠管破裂伤动物模型，随机分为海水浸泡组(n=10)、生理盐水浸泡组(n=10)和对照组(n=10)。前两组伤后分别浸泡于人工海水和生理盐水中，对照组单纯致伤不浸泡。观察犬肠管破裂伤后在血流动力学及病理学的变化规律。结果 肠管破裂伤合并海水浸泡后出现明显的平均动脉压(MAP)、肺动脉嵌压(PAWP)、中心静脉压(CVP)和心排出量(CO)下降等血流动力学紊乱及重要器官损伤的病理学改变。生理盐水浸泡组和对照组在致伤前后无明显血流动力学及病理学变化。结论 海水浸泡是导致犬肠管破裂伤合并海水浸泡后血流动力学紊乱的主要因素。

Hemodynamic and pathological changes after seawater immersion in dogs with perforating injury of the intestine

Objective To evaluate the effect of seawater immersion on hemodynamics and pathological changes in dogs with perforating injury of the intestine. Methods Thirty healthy adult dogs were subjected to perforating injury of the intestine. Ten injured dogs were immersed in artificial seawater after the injury. An equal number of injured dogs were immersed in normal saline solution. Control group dogs (n=10) were not subjected to salt water immersion. Hemodynamical and pathological changes were observed at different time intervals after injury. Results Obvious hemodynamic disorder and serious pathological changes were found after seawater immersion. Normal saline solution group and control group dogs did not show obvious disorders in hemodynamics and pathology. Conclusion Seawater immersion is one of the main factors leading to the disturbance in hemodynamic and pathological changes after perforating injury of the intestine.