鲍曼不动杆菌肺感染影像学特征分析

Imaging Features of Acinetobacter Baumannii Pneumonia

目的鲍曼不动杆菌肺感染发病率及耐药率日趋升高,本文旨在总结分析鲍曼不动杆菌肺感染影像学表现,为早期临床诊断及治疗提供依据。资料与方法回顾性分析49例经痰培养证实的鲍曼不动杆菌肺感染患者的影像表现,总结归纳其影像学特征。结果鲍曼不动杆菌肺感染胸部CT最常见的3种变化是弥漫磨玻璃改变[69.4%(34/49)]、实变[67.3%(33/49)]、胸腔积液[53.1%(26/49)],X线胸片主要表现为肺内斑片影[83.7%(41/49)]、实变[36.7%(18/49)]、胸腔积液[36.7%(18/49)],进一步分析显示鲍曼不动杆菌混合感染和单纯鲍曼不动杆菌感染胸部CT和X线胸片影像学表现差异无统计学意义(P>0.05)。结论鲍曼不动杆菌肺感染胸部影像学最常见的3种变化是弥漫磨玻璃改变、肺实变、胸腔积液。总结其影像学特点,对临床早期诊断、治疗及判断预后具有重要意义。

Purpose The incidence and drug resistance rate of Acinetobacter baumannii pneumonia are becoming more and more serious. To summarize the computed tomography（CT） appearance of Acinetobacter baumannii pneumonia and to provide evidence for early clinical diagnosis and treatment. Materials and Methods The imaging findings of 49 patients with sputum culture confirmed Acinetobacter baumannii pneumonia were retrospectively analyzed, and the imaging features were summarized. Results The three most common patterns of chest CT findings in Acinetobacter baumannii pneumonia were ground-glass opacification（69.4%, 34/49）, consolidation（67.3%, 33/49）, and pleural effusion（53.1%,26/49）. While, the most common patterns of chest X-ray were pulmonary plaque（83.7%, 41/49）, consolidation（36.7%, 18/49）, and pleural effusion（36.7%, 18/49）. Further analysis showed that there was no statistically significant difference in the CT and X-ray findings between combined infection of Acinetobacter baumannii with other pathogens and single Acinetobacter baumanniizxcvbnm, infection（P 0. 0 5）. Conclusion The three most common changes of chest imaging of Acinetobacter baumannii pneumonia are ground-glass opacification, pulmonary consolidation and pleural effusion. It is of great significance to summarize its imaging features for early diagnosis, treatment and prognosis-predicting.