A multicenter epidemiology study on the risk factors and clinical outcomes of nosocomial intra-abdominal infections in China: results from the Chinese antimicrobial resistance surveillance of nosocomial infections (CARES) 2007–2016

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2018
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Abstract
A multicenter epidemiology study on the risk factors and clinical outcomes of nosocomial intra-abdominal infections in China: results from the Chinese Antimicrobial Resistance Surveillance of Nosocomial Infections (CARES) 2007-2016 Jiangang Zhang, Chunjiang Zhao, Hongbin Chen, Henan Li, Qi Wang, Zhanwei Wang, Feifei Zhang, Hui Wang On behalf of the CARES Network Department of Clinical Laboratory, Peking University People’s Hospital, Beijing, China Objective: This study aimed to determine the risk factors for intra-abdominal infections (IAIs), assess the clinical outcomes of IAIs, and investigate the spectrum and antimicrobial resistance of major pathogens causing IAIs. Patients and methods: This prospective observational study enrolled patients from the Chinese Antimicrobial Resistance Surveillance of Nosocomial Infections (CARES) program between 2007 and 2016. Data on the clinicopathological factors and causative pathogens were collected. The results of antimicrobial susceptibility tests were interpreted according to the minimum inhibitory concentration (MIC) interpretive breakpoints recommended by the Clinical and Laboratory Standards Institute in 2017. Results: A total of 2,756 patients were included. The 30-day all-cause mortality was 9.5% (262/2,756). Multivariable analysis showed that the following independent risk factors were associated with the 30-day mortality: age >60 years, pulmonary disease, tracheal cannula, infection occurring in intensive care unit (ICU), prior admission within 3 months, antibiotic use before infection, recent use of immunosuppressants, and multidrug-resistant organisms. In addition, 2,913 clinical isolates were collected. The Gram-negative and Gram-positive bacteria accounted for 70.8% and 29.2% of all isolates, respectively. The most common pathogens were Escherichia coli (33.4%), Klebsiella pneumoniae (10.8%), and Enterococcus faecium (10.7%). Pseudomonas aeruginosa and Acinetobacter baumannii were the most common non-Enterobacteriaceae Gram-negative pathogens. E. faecium, Enterococcus faecalis, and Staphylococcus aureus were the most common Gram-positive pathogens. E. coli, A. baumannii, and Enterobacter cloacae were more commonly found in ICU patients than in non-ICU patients. Overall, the antibiotics tested in the CARES exhibited diminished susceptibility to pathogens over the study period, especially extended spectrum β-lactamase producing isolates. Conclusion: Considering the current data set and high-level resistance of intra-abdominal pathogens to various antibiotics, further monitoring of the epidemiology of IAIs and their susceptibility to antibiotics through the CARES is warranted. Keywords: intra-abdominal infections, risk factors, clinical outcomes, antimicrobial susceptibility, epidemiology
Reference Key
jiangang2018ainfection Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Jiangang Zhang;Chunjiang Zhao;Hongbin Chen;Henan Li;Qi Wang;Zhanwei Wang;Feifei Zhang;Hui Wang and
Journal Infection and drug resistance
Year 2018
DOI
10.2147/IDR.S182180
URL
Keywords Keywords not found

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