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Journal of Third Military Medical University ; (24)1984.
Article in Chinese | WPRIM | ID: wpr-549793

ABSTRACT

The effects of acute hemorrhage complicated with cyanide posisoning on the hemodynamics were studied and compared with those simple cyanide poisoning in 24 dogs.Cyanide poisoning was induced by intravenous injection a lethal dose of NaCN of 2.5mg/kg,Acute hemorrhage was created by bleeding the dogs to an arterial pressure of 9.33 kPa(70mm Hg)within 2 minutes through a cannulated femoral artery.HR,CO,MAP,LVP,LVP (?)dp/bt max,and ECG were recorded.It was found that the excitatory response of cardiovascular functions was observed within 1 minute after cyanide poisoning,then a significant failure of the cardiavascular functions resulted in the rapid death of the animal 7~10 minutes after cyanide administration.In case when cyanide poisoning was complicated with acute hemorrhage,no excitatory response of the cardiovascular functions could be observed.An early cardiovascular collapse occurred which was characterized by a rapid fall of CO,MAP,LVP,LVP(?)dp/dt max as well as arrhythmia.All the dogs in this group died of acute failure of cardiovascular functions 4- 6 minutes after cyanide poisoning.The results of this study suggest that the failure of the cardiovascular functions is the main cause of death in case of acute hemorrhage complicated with cyanide poisoning.

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