近年来医院内感染问题日益突出,许多以前罕见的微生物,如多形模仿菌、粘质沙雷氏菌、光滑类酵母菌及红色类酵母菌等渐见于临床血液培养中。经追踪分析,发现静脉输液(输液)是医院内感染的重要途径之一。输液系统中可能污染的重要环节输液引起败血症是输液系统被细菌或霉菌等病原微生物污染的结果。输液系统中任一组成部份,从液体到插入静脉内的针头或导管均可被污染。按污染发生方式不同,分为内部的和外来的两类。前一类发生于输注前,即于液体的制作和运输过程中,或于输液装置的消毒灭菌过程中不慎为细菌等污染。后一类发生于输注时,病原微生物通过各种途径进入输液系统中。液体本身和导管或针头是各个可能污染的环节中最重要的两个环节,而且两者污染 In recent years, the problem of nosocomial infections has become increasingly prominent. Many previously rare microorganisms, such as pleomorphic bacteria, serratia marcescens, smooth-type yeast and red yeast, are increasingly found in clinical blood cultures. Tracing analysis found that intravenous infusion (infusion) is one of the important ways of nosocomial infection. Infusion system may be an important part of the pollution infusion caused by sepsis is the infusion system is contaminated by bacteria or fungi and other pathogenic microorganisms. Any component of the infusion system, from the liquid to the needle or catheter inserted into the vein, can be contaminated. According to the different ways of pollution, divided into internal and external categories. The former occurred before infusion, that is, in the process of liquid production and transportation, or in the process of disinfection and sterilization of infusion devices for bacteria and other pollution. The latter occurs when infusion occurs and pathogenic microorganisms enter the infusion system through various routes. The fluid itself and the catheter or needle are the two most important links in every possible contamination, and both are contaminated