Rates of susceptibility of carbapenems, ceftobiprole, and colistin against clinically important bacteria collected from intensive care units in 2007: Results from the Surveillance of Multicenter Antimicrobial Resistance in Taiwan (SMART)

Shio Shin Jean, Wen Sen Lee, Kwok Woon Yu, Chun Hsing Liao, Chin Wang Hsu, Feng Yi Chang, Wen Chien Ko, Ray Jade Chen, Jiunn Jong Wu, Yen Hsu Chen, Yao Shen Chen, Jien Wei Liu, Min Chi Lu, Carlos Lam, Cheng Yi Liu, Po Ren Hsueh

研究成果: Article同行評審

19 引文 斯高帕斯(Scopus)

摘要

Background Data on susceptibility to ceftobiprole and colistin, and the complete evolutionary trends of minimum inhibitory concentrations (MICs) of important carbapenem agents among important pathogens collected in intensive care units (ICUs) in Taiwan are lacking. Methods We surveyed the MIC distribution patterns of ceftobiprole and colistin and susceptibility profiles of some important pathogens collected from patients hospitalized in intensive care units (ICUs) of major teaching hospitals throughout Taiwan in 2007. We also investigated the rates of nonsusceptibility to powerful carbapenems (imipenem, meropenem) among four important species of Enterobacteriaceae (Escherichia coli, Klebsiella pneumoniae, Enterobacter cloacae, and Proteus mirabilis) collected during the same period. MIC breakpoints recommended by the Clinical and Laboratory Standards Institute in 2014 were applied. Results Colistin showed excellent in vitro activity (susceptibility rate, 96%) against Acinetobacter baumannii isolates but moderate (73–77% susceptibility rate) activity against isolates of Pseudomonas aeruginosa and E. cloacae. The ceftobiprole MIC90 value was 4 μg/mL for methicillin-resistant Staphylococcus aureus and 16 μg/mL for P. aeruginosa. The phenotype of methicillin resistance did not markedly increase the MIC value of ceftobiprole among S. aureus isolates. Interestingly, the proportion of isolates that displayed nonsusceptibility to imipenem was significantly higher among P. mirabilis isolates than among isolates of the other three Enterobacteriaceae species, regardless of the production of extended-spectrum β-lactamase. Conclusion Continuous monitoring of susceptibility profiles of ICU pathogens to important antibiotics is warranted to provide appropriate antimicrobial regimens against infections in the ICU.

原文English
頁(從 - 到)969-976
頁數8
期刊Journal of Microbiology, Immunology and Infection
49
發行號6
DOIs
出版狀態Published - 2016 十二月 1

All Science Journal Classification (ASJC) codes

  • 免疫學和過敏
  • 免疫學與微生物學 (全部)
  • 微生物學(醫學)
  • 傳染性疾病

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