OBJECTIVE To explore the risk factors for hospital-acquired pneumonia caused by pandrug-resistant Acinetobacter baumannii so as to provide guidance for clinical prevention of pandrug-resistant A.baumannii infection.METHODS A total of 101 patients with hospital-acquired pneumonia caused by A.baumannii,who were treated in the hospital from Jan 2011 to Dec 2012,were enrolled in the study,48 cases of pandrug-resistant A.baumannii pneumonia were assigned as the case group,and 53 cases of non-pandrug-resistant A....