急性低温低氧对家兔肠系膜微血管口径及血流速度的影响  

The effect of acute hypothermia and hypoxia on the caliber of mesentery microvessel and blood flow velocity in rabbits

作　　者：何显教[1] 赵善民[1] 黄丽娟[1] 黄俊杰[1] 晋玲[1] 梁祚仁[1] 罗显克[1] 

机构地区：[1]右江民族医学院应用生理学研究室,广西百色533000

出　　处：《右江民族医学院学报》2006年第5期709-710,共2页Journal of Youjiang Medical University for Nationalities

基　　金：广西科技厅科研项目(桂科计字[2001]41号)

摘　　要：目的观察急性低温低氧共同作用下家兔肠系膜微血管口径和血流速度的效应。方法家兔10只,置于低温(-10±2℃)的冰柜中,并给吸入含氧量为8.5%的氧/氮混合气体,30min后迅速观察肠系膜的微血管口径和血流速度的变化。结果与实验前相比,急性低温低氧后家兔肠系膜微血管口径明显变小(P<0.01),血流速度明显减慢(P<0.01)。结论急性低温低氧可引起家兔肠系膜微血管的口径变小和血流速度减慢。Objective To observe the changes of the caliber of mesentery mierovessel and blood flow velocity in rabbits on the common role of acute hypothermia and hypoxia. Methods Ten rabbits are put into an icebox which had been made adjustment to a low temperature （ - 10 ±2℃ ）, and inbreathed a mixture gas made of 8.5 96 oxygen and 91. 596 nitrogen. After 30min,the mice were taken out, and we quickly observed the changes of the caliber of mesentery microvessel and blood flow velocity. Results Comparing with the pre- treatment, the calibesr of the rabbits＇ mesentery microvesel were significantly narrowed after acute hypothermia and hypoxia （ P 〈 0. 01）, and the blood flow velocity also slowd down obviously （ P 〈 0. 01）. Conclusion Acute hypothermia and hypoxia can make the caliber of rabbit＇s mesentery micovesel narrow and the blood flow velocity slow down.

关 键 词：低温 低氧 微血管 血流速度 血管口径 动物 实验 

分 类 号：Q46[生物学—生理学]