集尿袋是收集尿液的消毒塑料袋。留置导尿是临床为了准确记录尿量、解决患者排尿困难而进行的一项最普遍且经常应用的护理操作，集尿袋是留置导尿必备的用品，需定期更换。留置导尿会带来一系列并发症，尤以泌尿系感染多发。
结论单向活瓣集尿袋能有效地降低留置导尿患者的尿路感染发生。
CONCLUSIONS It is able to lower and reduce the infection rate by means of the one-directed-valve-urine-collection-bag.
结果：留置尿管时间越长、集尿袋更换越频繁，尿路感染发生率越高；
Result:The longer remained of urinary bag, the more frequently urinary bag were changed the higher infection rate is.
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