目的 分析儿童重症监护病房（PICU）患儿呼吸道感染的危险因素。方法 对2014年2月-2016年3月我院92例PICU患 儿临床资料进行回顾性分析，行呼吸道感染单因素分析及Logistic多因素分析。结果 92例患儿中，13例发生呼吸 道感染，发生率为14.13%(13/92)；呼吸道感染发生与年龄、机械通气时间、住院时间、侵入操作、抗菌药物使用 合理性、微量元素、呼吸窘迫综合征、护理方式选择等因素有关；Logistic多因素分析进一步显示，年龄、机械通 气时间、住院时间、侵入操作、抗菌药物使用合理性、微量元素、呼吸窘迫综合征、护理方式选择为PICU患儿呼吸 道感染的独立危险因素。结论 PICU患儿呼吸道感染存在年龄、机械通气时间、住院时间、侵入操作、抗菌药物使 用合理性、微量元素、呼吸窘迫综合征、护理方式等多种危险因素，应根据患儿情况进行有针对性预防。

Objective To analyze risk factors of respiratory tract infection in PICU children. Methods From Feb. 2014 to Mar. 2016, a total of 92 PICU children in our hospital were taken as the clinical research objects, and their clinical data were analyzed retrospectively. Both single factor analysis and logistic multivariate analysis for respiratory tract infection were performed. Results The incidence rate of respiratory tract infection was 14.13%(13/92), the incidence of respiratory tract infection was related to age, mechanical ventilation time, hospital stay, invasive operation, rational use of antimicrobial drugs, trace elements, respiratory distress syndrome, nursing mode selection and so on; Logistic multivariate analysis further revealed that age, mechanical ventilation time, hospital stay, invasive operation, rational use of antimicrobial drugs, trace elements, respiratory distress syndrome, nursing mode selection were independent risk factors of respiratory tract infection for PICU children. Conclusion For the age, mechanical ventilation time, hospital stay, invasive operation, rational use of antimicrobial drugs, trace elements, respiratory distress syndrome, nursing mode selection and so on are independent risk factors of respiratory tract infection for PICU children, it is necessary to carry out targeted prevention according to the situation of children.