当前,医院感染已经成为一个重要的公共卫生问题,特别是近年来,随着医院新技术新疗法的开展,获得性感染病原菌的变迁及细菌耐药性变化越来越突出问题,更增加了医院感染的机会。ICU病房因其收治的患者病情重、基础疾病复杂、机体免疫力差,加之各种侵袭性操作的实施和多重耐药菌的增多,使ICU医院感染发生率明显高于普通病房。WHO的相关调查和其他研究均表明,医院感染率最高的科室是ICU〔1〕。为了预防与控制医院感染的发 At present, nosocomial infection has become an important public health problem. Especially in recent years, with the development of new therapies and new therapies in hospitals, the change of acquired infectious pathogens and the change of bacterial resistance have become more and more prominent, The chance of infection. The prevalence of ICU nosocomial infection in ICU wards was significantly higher than that of ordinary ward because of the heavy illness, complex underlying diseases and poor immunity of the patients. In addition, the implementation of various aggressive operations and the increase of multi-resistant bacteria led to a significantly higher incidence of nosocomial infections in ICUs. Relevant WHO surveys and other studies show that the highest hospital infection rate is ICU [1]. In order to prevent and control the development of nosocomial infections