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Change Pattern of Species and Antimicrobial Susceptibility of Microorganisms Isolated from Blood Culture during 5 Years: 2008-2012  

Shin, Kyung-A (Department of Clinical Laboratory Science, Shinsung University)
Shin, Kyeong Seob (Department of Laboratory Medicine, Chungbuk National University, College of Medicine)
Hong, Seung Bok (Department of Clinical Laboratory Science, Chungbuk Health & Science University)
Publication Information
Biomedical Science Letters / v.19, no.3, 2013 , pp. 245-253 More about this Journal
Abstract
To provide reference data or guideline for empirical treatment of bloodstream infection, we studied a change pattern in causative microorganisms and antimicrobial susceptibility in a general hospital at Gyeonggi province during five years. We retrospectively reviewed the frequency of causative microorganisms and antimicrobial susceptibility results of 5,782 microorganisms isolated from blood culture in a general hospital during the period from January 2008 to December 2012. The most common pathogens were Escherichia coli (14.7%), Staphylococcus aureus (7.5%), Streptococcus viridans group (4.9%), and Klebsiella pneumoniae (4.1%). The multiple microorganisms were isolated in 4.3% of bloodstream infection patients. The average contamination rate of blood culture during five years was 3.0%. Methicillin-resistant S. aureus (MRSA), vancomycin-resistant Enterococcus faecium (VRE), and penicillin-resistant Streptococcus pneumoniae were isolated at 62%, 27% and 11%, respectively. Cefotaxime-resistant E. coli and K. pneumoniae was 20% and 18%, respectively. Imipenem-resistant Pseudomonas aeruginosa (IRPA) and Acinetobacter baumannii (IRAB) was 25% and 66%, respectively. E. coli and S. aureus were most common pathogens isolated from blood culture for five years. The increase of multidrug-resistant microorganisms, such as MRSA, VRE, ESBL, IRPA and IRAB, requires more strict control of antibiotics and causes the need of the more updated guideline for the treatment of blood stream infection.
Keywords
Blood culture; Frequency; Antimicrobial susceptibility;
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