连续性血液滤过对重症中暑休克犬内环境和生存率的影响  

Effect of continuous hemofiltration on internal environment and survival rate of severe heatstroke dogs with shock

作　　者：陈光明[1] 卢金福[2] 王文睿[3] 陈建[4] 

机构地区：[1]南京军区福州总医院儿科,福州350025 [2]福建省三明市明溪县医院内科,福建明溪365200 [3]南京军区福州总医院胸外科,福州350025 [4]南京军区福州总医院肾内科,福州350025

出　　处：《解放军医学杂志》2011年第8期828-832,共5页Medical Journal of Chinese People's Liberation Army

基　　金：南京军区医学科研"十一五"计划课题(06MA141)

摘　　要：目的探讨连续性血液滤过（CHF）对重症中暑休克犬内环境和生存率的影响。方法健康雄性杂种犬16只,随机均分为对照组（HS组）和连续性血液滤过组（CHF组）,采用整体高温诱导建立犬重症中暑休克模型,建模成功后HS组置于常温下观察,CHF组立即行CHF治疗,观察两组犬中心温度（Tc）、平均动脉压（MAP）、血气和电解质变化情况及存活时间。结果两组犬热暴露达到休克的时间分别为107.0±28.5min和111.4±22.2min（t=-0.354,P=0.729）。CHF组Tc在治疗后15~30min降至热暴露前水平,而HS组Tc在休克后90min仍高于热暴露前水平,两组休克后各时间点Tc比较差异均有统计学意义（P〈0.01）。两组犬休克时MAP均明显低于热暴露前（P〈0.01）,CHF组治疗30min后MAP逐渐上升,而HS组MAP上升缓慢,休克45min后各时间点CHF组MAP均高于HS组（P〈0.05或P〈0.01）。休克时两组犬均表现为过度换气和呼吸性碱中毒,HS组以后逐渐进展为代谢性酸中毒,部分犬因呼吸代偿失调合并呼吸性酸中毒,CHF组血气值逐渐恢复正常,休克后各时间点两组血气值比较差异均有统计学意义（P〈0.05或P〈0.01）。休克时两组犬均表现为高钠、高氯和高钾血症,CHF组电解质紊乱逐渐纠正,到休克后180min恢复到热暴露前水平,HS组电解质紊乱始终未纠正,两组犬休克后各时间点血钠、血氯和血钾比较均有统计学意义（P〈0.05或P〈0.01）。中位生存时间CHF组为180min,HS组为75min,两组生存率比较差异有统计学意义（2χ=6.929,P=0.008）。结论 CHF能够改善重症中暑休克犬的预后,延长其存活时间,降低死亡率,其机制可能与早期快速降温、维持血流动力学稳定和纠正酸碱失衡及电解质紊乱有关。Objective To explore the effect of continuous hemofiltration（CHF） on internal environment and survival rate of severe heatstroke dogs with shock.Methods Sixteen healthy male dogs were randomly divided into heatshock group（HS group,n=8） and continuous hemofiltration group（CHF group,n=8）.Severe heatstroke model was established by applying high temperature to whole body,and then the animals were removed from the heating cabin as soon as they presented manifestations of shock.Dogs of HS group were put into an ordinary environment,while dogs of CHF group received CHF treatment.The core temperature（Tc）,mean arterial pressure（MAP）,blood gas analysis,serum electrolytes and survival rate of dogs in two groups were observed.Results The time from heat exposure to shock was 107.0±28.5min and 111.4±22.2min in HS group and CHF group respectively（t=-0.354,P=0.729）.The Tc in CHF group declined to normal level 15 to 30 minitues after CHF treatment,while the Tc in HS group remained at a level higher than that before heat exposure at 90min after shock.The Tc of two groups showed significant difference at each time point after shock（P0.01）.The MAP of both groups was obviously lowered than that before heatstroke.The MAP of CHF group raised gradually 30 min after treatment,while the MAP of HS group rose very slowly,and it was significantly lower than that of CHF group at each time point after 45min（P0.05,P0.01）.All the dogs in both groups manifested hyperventilation and respiratory alkalosis when shock appeared.After shock,respiratory alkalosis in HS group gradually became metabolic acidosis,with some animals manifested combined metabolic and respiratory acidosis because of respiratory decompensation,while the blood gas levels in CHF group recovered to normal gradually.The blood gas levels of two groups showed significant difference at each time point after shock（P0.05,P0.01）.Hypernatremia,hyperchloraemia and hyperpotassaemia were found in all animals of both groups.In CHF group the electrolyte di

关 键 词：中暑 血液滤过 内环境 存活率 

分 类 号：R594.12[医药卫生—内科学]