【摘要】 通过对高原土生动物不同海拔血液流变学特征及其到平原后血液流变学变化的观察,表明这类动物的红细胞压积随海拔高度增加,只轻度增高,全血粘滞性较低,红细胞聚集性较小,这既有利于红细胞携带更多的氧到组织也利于组织灌注,在血液携氧和运氧过程中发挥了最佳效率。这类动物到平原初期,红细胞压积及全血粘度极度降低,经过一阶段机体的调整,红细胞压积及全血粘度逐渐回升,其表现与移居高原动物再返平原后的反应截然不同。更多还原

【Abstract】 The characteristic of blood rheology of high altitude animal included pika,Tibetan sheep and hima laya marmota were observed in different altitude and plain.At the highland (2300～3 600m) the results showed the increasing of blood viscosity and platelet aggregation,with the raising of altitude, but only little on hematocrit.It revealed that it was benifical for those animal: : ro carry more oxygen and supply it to tissue effectively.At the plain (sea level), hematocrit and blood viscosity began to decrease obviously.After modulating for a month,hematocrit and blood viscosity raised gradually with partial pressure of oxygen decreasing.This means the characteristics of blood rheololgy is remarkably changed when high altitude animals were sojourned to lowland.更多还原