为了解失重时体液头向分布这一因素对微循环的影响,比较了两组兔(平卧组和头低位20°悬吊组)在实验7天中耳廓微循环和血液流变学指标的变化。结果证明体液头向分布可引起一定的微循环障碍,表现为毛细血管和细静脉管径变粗、流速减慢、血液在静脉中潴留、红细胞聚集、耳廓出血及立位时微血管调节功能发生改变,血液流变学指标也出现相应变化。本文分析了其中一些变化的起因,提出一些新的看法。 In order to understand the effect of head-to-head fluid distribution on microcirculation during weightlessness, microcirculation and hemorheology indexes of two groups of rabbits (supine group and 20 ° suspension group) were compared in the experimental 7 days The change. The results show that head to body fluid distribution can cause some microcirculation obstacles, manifested as capillary and small vein diameter coarse, slow flow, blood retention in the veins, erythrocyte aggregation, auricular hemorrhage and standing microvascular regulatory function Change, hemorheology indicators also appear corresponding changes. This article analyzes the causes of some of these changes and puts forward some new ideas.