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观察兔全脑缺血 再灌注脑血流及脑血管ＣＯ2 收缩反应性变化 ,探讨复苏后过度通气降颅压的应用价值。四血管阻断法制作兔全脑缺血 再灌注模型 ,随机分为对照组和脑缺血组。经颅多普勒超声 (ＴＣＤ)探测大脑中动脉平均血流速度(Ｖｍ) ,过度通气法测定ＣＯ2 诱发的脑血管收缩反应
To observe the changes of cerebral blood flow and cerebrovascular CO2 reactivity during global cerebral ischemia-reperfusion in rabbits to explore the value of reducing hypercapnia intracranial pressure after resuscitation. Rabbit model of global cerebral ischemia-reperfusion was made by four-vessel occlusion method and randomly divided into control group and cerebral ischemia group. Transcranial Doppler ultrasound (TCD) detection of the middle cerebral artery mean blood flow velocity (Vm), hyperventilation of CO2-induced cerebrovascular contractile response