观察滚柱泵在长时间转流中是否存在“总红细胞破损”现象。用Ｐｏｌｙｓｔａｎ 泵（Ａ 组）和Ｃｏｂｅ 泵（Ｂ组）转流库存１ ｄ ＡＣＤ 血４００ ｍ ｌ，用联苯胺显示法测定游离血红蛋白，用Ｋｏｌｌｅｒ氏法计算溶血指数。血样本为转流前，转中４、６、８、１０、１２、１４、１６ ｈ。结果：两组游离血红蛋白随转流时间延长，逐渐增高。两组溶血指数分别为０．２９６０ ｍ ｇ／Ｌ和０．３９９３ ｍ ｇ／Ｌ，两组比较无显著差异。在滚柱泵长时间体外转流实验中未观察到“总红细胞破损”现象。 Observe whether there is a “total red blood cell damage” in the roller pump during long-term commutation. Polystan pump (group A) and Cobe pump (group B) were used to divert 1 day of ACD blood to 400 ml. The free hemoglobin was determined by the benzidine method and the hemolytic index was calculated by Koller’s method. Blood samples before commutation, turn 4,6,8,10,12,14,16 h. Results: The two groups of free hemoglobin with the flow of time, gradually increased. The hemolysis index of the two groups were 0.2960 m g / L and 0.3993 m g / L, respectively, with no significant difference between the two groups. No long-term in vitro roller pump roller experiments observed “total red blood cell damage” phenomenon.