RESUMO
Objective To study the changes of blood arginine vaso-pression(AVP)levels in patients with severe brain injury after treated with mild hypotherima.Methods Seventy-eight patients with severe brain injury were divided into mild hypothermia(33～35℃)group and normothermia group.The blood AVP levels and CSF AVP levels were determined at the third and the seventh day after brain injury.Results The AVP levels in blood and CSF of mild hypothermia group were lower than those of the normothermia group at the third and seventh day after brain injury(P＜0.05).According to GOS,prognosis of the mild hypothermia group was better than that of the nonnotbcrmia group(P＜0.05).Conclusion The mild hypothermia treatment may have inhibitive effects on the production of blood AVP,CSF AVP,and brain edema.Mild hypothermia is an effective method in the treatment of acute severe brain iniury in reducing the mortality and in increasing the survival rate.