摘要
本实验观察了DMAP治疗不同程度的急性失血复合致死量氰中毒的效果。犬分别经股动脉急性失血至动脉收缩压9.33、6.67和5.33kPa造成轻、中、重度急性失血后复合iv NaCN2.5mg/kg中毒。对照组为轻度失血复合氰中毒不治疗,全组动物均在5 min内死亡;DMAP治疗各组在复合氰中毒后3 min iv DMAP 2 mg/kg治疗,动态监测血流动力学变化并同步作血气分析及MHb测定。结果发现,DMAP用于轻度失血复合氰中毒的治疗,有快速强效的心血管功能兴奋作用,起到挽救生命的效果;随失血程度加重,抗氰治疗难以奏效。血气分析及MHb测定结果表明,急性失血复合氰中毒时应用DMAP治疗可因过高的MHb浓度形成而严重影响血液携氧功能,提示在急性失血复合氰中毒时不用MHb形成剂类抗氰药为宜。
The animal models of the combined injuries of mild, medium or severe hemorrhage and cyanide intoxication were produced by bleeding to 9.33, 6.67, or 5.33 kPa of arterial systolic pressure and administrating NaCN 2.5 mg/kg intravenously. Dogs with the combined injury of acute mild hemorrhage and cyanide intoxication in control group did not receive DMAP treatment whereas dogs in DMAP treatment groups receiveed DMAP 2 mg/kg iv at 3 min after administrating cyanide. The changes of hemodynamics and blood gases and methemoglobin were determined. The dogs receiving no DMAP treatnent in control group died within 5 min after intoxication. DMAP has an excitatory effect on hemodynamics after giving to dogs with the combined injury of acute mild hemorrhage and cyanide intoxication. It can save the dogs from death. The excitatory effect of DMAP on hemodynamics becomes weaker while the level of acute hemorrhage increases. The results of blood gas and methemoglobin analysis indicated that DMAP can disturb the oxygen-carrying capacity of hemoglobin because of the formation of much higher concentration of methemoglobin when DMAP is used as an antidote for the combined injury of acute hemorrhage and cyanide intoxication. The results suggested that methemoglobin formers should not be used as the antidotes for the combined injury of acute hemorrhage and cyanide intoxication.
出处
《第三军医大学学报》
CAS
CSCD
北大核心
1990年第5期414-418,共5页
Journal of Third Military Medical University
关键词
失血
氰中毒
对二甲氨基酚
复合伤
acute hemorrhage
cyanide intoxication
4-dimethylaminophenol
combined injury
