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Multicenter study of antimicrobial susceptibility of anaerobic bacteria in Korea in 2012

Authors
 Yangsoon Lee ; Yeon-Joon Park ; Kyungwon Lee ; Myung Sook Kim ; Young Uh ; Mi-Na Kim 
Citation
 Annals of Laboratory Medicine, Vol.35(5) : 479~486, 2015 
Journal Title
 Annals of Laboratory Medicine 
ISSN
 2234-3806 
Issue Date
2015
Abstract
BACKGROUND: Periodic monitoring of regional or institutional resistance trends of clinically important anaerobic bacteria is recommended, because the resistance of anaerobic pathogens to antimicrobial drugs and inappropriate therapy are associated with poor clinical outcomes. There has been no multicenter study of clinical anaerobic isolates in Korea. We aimed to determine the antimicrobial resistance patterns of clinically important anaerobes at multiple centers in Korea. METHODS: A total of 268 non-duplicated clinical isolates of anaerobic bacteria were collected from four large medical centers in Korea in 2012. Antimicrobial susceptibility was tested by the agar dilution method according to the CLSI guidelines. The following antimicrobials were tested: piperacillin, piperacillin-tazobactam, cefoxitin, cefotetan, imipenem, meropenem, clindamycin, moxifloxacin, chloramphenicol, metronidazole, and tigecycline. RESULTS: Organisms of the Bacteroides fragilis group were highly susceptible to piperacillin-tazobactam, imipenem, and meropenem, as their resistance rates to these three antimicrobials were lower than 6%. For B. fragilis group isolates and anaerobic gram-positive cocci, the resistance rates to moxifloxacin were 12-25% and 11-13%, respectively. Among B. fragilis group organisms, the resistance rates to tigecycline were 16-17%. Two isolates of Finegoldia magna were non-susceptible to chloramphenicol (minimum inhibitory concentrations of 16-32 mg/L). Resistance patterns were different among the different hospitals. CONCLUSIONS: Piperacillin-tazobactam, cefoxitin, and carbapemems are highly active beta-lactam agents against most of the anaerobes. The resistance rates to moxifloxacin and tigecycline are slightly higher than those in the previous study.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/140749
DOI
10.3343/alm.2015.35.5.479
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Laboratory Medicine
Yonsei Authors
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