The risk factors and outcomes of patients with bloodstream infections (BSIs) caused by Acinetobacter baumannii are major concerns in clinical therapy. Multicenter case–control studies were performed to compare the clinical characteristics of 47 A. baumannii BSI patients and 124 matched controls with nonbloodstream A. baumannii infections and the clinical and molecular characteristics of BSI survivors and nonsurvivors. Additionally, the mortality of BSIs was assessed. The clinical characteristics, including neutropenia, ICU admission prior to positive culture, primary infection in the central nervous system, and carbapenem use prior to positive culture, were independently associated with BSI caused by A. baumannii. The mortality of the BSI patients was significantly higher than that of the controls. A high Pitt bacteremia score was found to be an independent predictor of mortality in the BSI patients. The healthcare-associated factors, disease severity level, or antibiotic usage increased the risks of A. baumannii BSI and related mortality.

由鲍曼不动杆菌引起的血流感染（BSI）患者的危险因素和结果是临床治疗中的主要问题。进行了多中心病例对照研究，以比较47例鲍曼不动杆菌BSI患者和124例非血液鲍曼不动杆菌感染的匹配对照以及BSI存活者和非存活者的临床和分子特征。另外，评估了BSI的死亡率。临床特征包括嗜中性白血球减少症，阳性培养前入ICU，中枢神经系统的原发性感染以及阳性培养前使用碳青霉烯，与鲍曼不动杆菌引起的BSI独立相关。。BSI患者的死亡率显着高于对照组。发现高Pitt菌血症评分是BSI患者死亡率的独立预测因子。医疗保健相关因素，疾病严重程度或抗生素的使用增加了鲍曼不动杆菌BSI的风险和相关的死亡率。