Multicenter Study of Antimicrobial Susceptibility of Anaerobic Bacteria in Korea in 2012

Title
Multicenter Study of Antimicrobial Susceptibility of Anaerobic Bacteria in Korea in 2012
Author
이양순
Keywords
Anaerobe; Multicenter; Imipenem; Moxifloxacin; Tigecycline
Issue Date
2015-09
Publisher
KOREAN SOC LABORATORY MEDICINE
Citation
ANNALS OF LABORATORY MEDICINE, v. 35, NO 5, Page. 479-486
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://www.annlabmed.org/journal/view.html?uid=2607&vmd=Fullhttp://hdl.handle.net/20.500.11754/27800
ISSN
2234-3806; 2234-3814
DOI
10.3343/alm.2015.35.5.479
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COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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