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                  成人膀〓胱容量为300~500ml尿液。正常人在每次排尿『后,膀胱内并非完全空▓虚,一般还有少「量尿液残留,称为▅残余尿。正常①成人的残余尿量约10~15毫升。残留尿量的多少与膀胱功能→有着密切关系。老年人残留尿量通常有所增加。残留尿量的增加是导致下尿路感染的∏常见原因之一。在临床上使用广泛,减少导管相关尿△路感染;辅助膀胱功能训练 ;确保病人舒适度;提高医生及护理人员工作效率。