B型全血加入不同剂量O型全血后游离血红蛋白变化

为了解B型全血加入不同剂量O型全血后在37℃与室温条件下游离血红蛋白的变化,随机抽取4℃保存24小时B型全血两人份,分别分装为60 ml,按不同比例加入O型全血9、12、15、18 ml置入100ml塑料血袋内混匀后,分别放置在37℃孵箱和室温条件下,间隔15分钟摇动1次.分别在1、2、4、8和12小时留取标本做游离血红蛋白检查.结果表明B型全血加入不同剂量O型全血,在12小时内游离血红蛋白量的变化无显著性差异.随着保存时间的延长不管是室温还是37℃条件下,1 小时以后均有显著性差异,一袋B型全血在室温与37℃条件下放置1-8小时无明显差别(P＞0.05),到12小时P＜0.001.另一袋在室温与37℃条件下放置1小时P＞0.05,2-8小时P＜0.001,有明显差别.结论在B型全血中加入O型全血,放置12小时不会引起游离血红蛋白升高.在室温与37℃存放8小时后接近和超过存放2天的水平170.4 mg/L,这提示血液采集后应尽快置入2-4℃冷藏,减少红细胞的分解代谢、衰老裂解而释放更多的FHb及其它代谢物质对机体的损害.

Change of Free Hemoglobin Content after Mixing Type B Whole Blood with Different Amounts of Type 0 Whole Blood

To investigate the changes of free hemoglobin (FHb) content after mixing type B whole blood with different amounts of type O whole blood at room temperature and at 37 degrees C, two lots of type B whole blood stored at 4 degrees C for 24 hours were randomly taken as recipient blood, and were packed as 60 ml respectively. Type O blood was taken as donor blood. 60 ml type B whole bloods were mixed with different amounts of type O whole blood, i.e. with 9, 12, 15 and 18 ml. The mixed blood was packed into 100 ml plastic blood bags and stored at 37 degrees C or room temperature, shaken once every 15 minutes. Free hemoglobin content was determined for the harvested samples at 1, 2, 4, 8 and 12 hours after store. The results showed that there was no significant elevation of FHb within 12 hours after mixing B whole blood with different amounts of type O whole blood. In another lot, there was obvious difference in FHb after 1 hour store along with the prolongation of store at either room temperature or 37 degrees C. In one lot, there was no difference of FHb (P > 0.05) during 1 - 8 hours of store at room temperature or 37 degrees C, but significant difference at 12 hours of store (P < 0.001). In another lot, there was no difference of FHb (P > 0.05) within 1 hour of store at room temperature and at 37 degrees C, but significant difference during 2 approximately 8 hours of store (P < 0.001). It is concluded that the FHb would not change significantly within 12 hours after type B blood was mixed with 1 200 ml of type O whole blood, but when the mixed blood was placed at room temperature or at 37 degrees C for 8 hours, the FHb content approaches, even exceeds 170.4 mg/L which was observed in the blood stored for 2 days. It suggests that freshly collected blood must be put into refrigerator of 2 approximately 4 degrees C for storing as soon as possible, so as to decrease the catabolism of erythrocyte and the releasing of FHb and other metabolites which are deleterious to the recipients.