中文摘要：

目的探讨心血管外科患者医院感染危险因素,为预防控制感染提供合理依据。方法利用医院实时监控系统提取某综合医院2013年10月-2015年6月2 955例心血管外科患者临床资料进行回顾性调查,应用单因素、多因素回归分析进行统计分析。结果 117例心血管外科住院患者发生医院感染,感染率为3.96%;单因素分析显示,患者大血管疾病、感染性心内膜炎、高血压、手术、入住ICU、使用呼吸机、中心静脉置管、留置尿管、住院时间长为发生感染的影响因素（P〈0.05）;多因素分析结果显示,患者大血管疾病、高血压、住院时间长、使用呼吸机是发生感染的独立危险因素（P〈0.01）。结论在实际工作中,对患有大血管疾病、高血压、住院时间、使用呼吸机的患者重点防护,以降低医院感染的发生。

英文摘要：

OBJECTIVE To explore the risk factors associated with the nosocomial infections in cardiac surgery so as to provide references for the control of nosocomial infections.METHODS A retrospective survey was adopted to investigate the clinical data of 2955 cardiovascular surgical patients from Oct.2013 to Jun.2015 collected from RTNISS.The single and multiple factor regression analyses were performed.RESULTS The nosocomial infections occurred in 117 cases with the infection rate of 3.96%.The single factor analysis showed that large vascular disease,infective endocarditis,hypertension,surgery,ICU admission,respirator,central venous catheterization,use of urinary catheterization and long hospital stay were influencing factors of nosocomial infections in cardiac surgery（P0.05）.The multiple factor regression analysis showed that large vascular disease,hypertension,respirator,long hospital stay were the independent risk factors for the infections（P0.10）.CONCLUSIONIn clinical work,it is necessary to protect patients with large vascular disease,hypertension,respirator and long hospital stay,so as to decrease the nosocomial infection rate.