OBJECTIVE To analyze the characteristics of the postoperative imipenem-resistant Pseudomonas aeruginosa(IRPA)infections so as to guide the clinical treatment.METHODS Totally 432 cases of patients who underwent surgery in the operating room from Jan 2011 to Nov 2012 and were diagnosed as the IRPA infections were chosen as the IRPA group,while 94 495 cases of patients without IRPA infections were set as the non-IRPA group,then the characteristics of the infections were compared between the two groups.RESULTS ...