[Establishment of maca mulatta model of resuscitation after selective cerebral ultra-deep hypothermic blood flow occlusion].

OBJECTIVE: To study the feasibility of resuscitation after selective cerebral ultra-deep hypothermia and blood flow occlusion. METHODS: Ten 4-10 year-old maca mulattas were divided into 3 groups: four-vessel occlusion group, two-vessel occlusion group and identical temperature perfusion group. MRI were examinated before and after operation, the vital signs and the hemodynamical parameters were observed during the experiment, neurological deficient evaluation was performed after operation. RESULTS: In all of the ten monkeys, the hemodynamical parameters of two-vessel occulation were steady during the operation, and all of them lived after filling 60 minutes. MRI were normal after operation, and the function of neurological deficient scale was normal. The others of identical temperature perfusion group and four-vessel occlusion group were not resuscitation after filling 60 minutes and died. CONCLUSION: Monkey could resuscitate from selective cerebral ultra-deep hypothermia and blood flow occlusion of bilateral common carotid artery in 60 minutes.

[Effects on neuronal ultrastructure and nervous system of monkey after selective cerebral profound hypothermia and blood flow occlusion].

OBJECTIVE: To study the effects of deep hypothermia on the neuronal ultrastructure and nervous system of monkey after selective cerebral profound hypothermia and blood flow occlusion. METHODS: Brain-local extracorporeal circulation was established by right internal carotid artery deep hypothermic perfusion and homolateral external jugular vein backflow, brain blood flow was recovered from circulatory arrest 60 - 80 minutes late and monkey came back naturally. RESULTS: In all 7 monkeys, 5 were succeeded in being build up the models except for 2 because of technic problems, and 4 of them lived up for ever. The function of nervous system grade, essential organ and neuronal ultrastructure were normal. CONCLUSION: Selective cerebral profound hypothermia can increase the ability of brain to endure hypovolemia and hypoxidosis and prolong the time of blood flow occlusion.