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低分子量右旋醣酐(Low Molecular Dextran),国外商品名为Rheomacrodex,其平均分子量约为45,000(幅度:30,000～60,000)。制造方法和右旋酣酐一样,也是以蔗糖经过Leuconostoc属微生物的发酵作用产生粗右旋醣酐,并加以处理精制而得。低分子量右旋醣酐为白色或类白色颗粒性粉末,无臭、无味,能溶于水,但微呈混浊状,在乙醇内不溶解。露置空气中能徐徐吸收水分,其干燥品的比旋度应在+195°以上(20℃)。右旋醣酐用于临床已有二十余年。由于它具有不限血型、能耐高热、可长期保存等多方面的优点,所以已被广泛用于烧伤和外伤,以增加血浆容积、维持血压,或用于失血过多引起休克的病例。1961年起,开始
Low Molecular Dextran, the foreign trade name Rheomacrodex, the average molecular weight of about 45,000 (amplitude: 30,000 ~ 60,000). The manufacturing method is the same as that of dextran anhydride, and the crude dextran is also produced by the fermentation of sucrose through the microorganism of Leuconostoc, and is processed and refined. Low molecular weight dextran white or almost white granular powder, odorless, tasteless, soluble in water, but slightly cloudy, insoluble in ethanol. The exposed air can slowly absorb moisture, the specific rotation of the dried product should be above + 195 ° (20 ℃). Dextran has been used clinically for more than twenty years. Because of its unlimited blood type, high fever, long-term preservation and many other advantages, it has been widely used in burns and trauma to increase plasma volume, maintain blood pressure, or for excessive bleeding caused by shock cases. Beginning in 1961