Abstract: Objective To observe the effect of four type placement of cold source box in blood transport containers on temperature tracing of stored red-blood-cell concentrates during transport,we can choice the best placement mode,according to the research and specific situation of patients. Methods Twelve blood bags were divided into four groups,there were three blood bags in each group,which were stored in the same blood transport containers,using four type placements of cold source box,respectively. The temperature of blood bags were measured by electronic thermometers. Once temperature of blood bags exceeded the temperature of 10℃,recorded the time immediately. Results Cold source box maintained the temperature of the blood bags not to exceed 2~10℃,the holding time has significant differtence between any two groups （P<0.05）. It is the best way that two cold source boxs were separately placed above and below the blood bags,which can keep longer time than another three groups when the blood bag temperature is 2~10℃.The less blood bags in blood transport containers,the longer periods of time to maintain the transport temperature. Conclusion When patient need blood transfusion in emergency,it is feasible that we only use blood transport containers to transport red blood cells. When red blood cells was transport to clinical departments,and patient can't use for some special reason.We can use blood transport container and cold source boxes to storage red blood cells temporarily,which reduces waste of blood and ensure transfusion safety.

Key words: Blood transport containers, Cold source box, Blood, preservation