J Lab Med Qual Assur.
2014 Sep;36(3):122-139. 10.15263/jlmqa.2014.36.3.122.
Annual Report on External Quality Assessment Scheme in Clinical Microbiology in Korea (2013)
- Affiliations
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- 1Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea. mnkim@amc.seoul.kr
- 2Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.
- 3Department of Laboratory Medicine, Chonnam National University Hospital, Chonnam National University, Gwangju, Korea.
- 4Department of Laboratory Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
- 5Department of Laboratory Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea.
- 6Department of Laboratory Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
- 7Department of Laboratory Medicine, Hallym University Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
- 8Department of Laboratory Medicine, Korean Institute of Tuberculosis, Cheongju, Korea.
- 9Department of Laboratory Medicine, Greencross Reference Laboratory, Wonju, Korea.
- 10Department of Laboratory Medicine, Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, Korea.
- 11Department of Laboratory Medicine, Korea University Ansan Hospital, Korea University College of Medicine, Ansan, Korea.
- KMID: 2200409
- DOI: http://doi.org/10.15263/jlmqa.2014.36.3.122
Abstract
- Annual external quality assessment was performed three times for clinical microbiology division of The Korean Association of Quality Assurance for Clinical Laboratory. For each trial, three sets composed of different combinations of four bacteria and one yeast were distributed for culture, identification, and antimicrobial susceptibility tests. A total of 340 laboratories were enrolled and 330 (97.0%), 331(97.4%), and 331(97.4%) returned the results on trial I, II, and III, respectively. For bacterial identification, the correct identification of gram-negative bacilli, Staphylococcus aureus, Staphylococcus epidermidis, Staphylococcus capitis, Streptococcus agalactiae, Listeria monocytogenes, and Candida species was greater than 95%. However, correct identification of Staphylococcus lugdunensis, Corynebacterium striatum, Vibrio vulnificus, Aeromonas hydrophila, Cryptococcus neoformans, and Malassezia pachydermatis was relatively less accurate, with values of 95.4%, 89.9%, 50.7%, 91.3%, 93.6%, and 93.9%, respectively. Surveillance cultures for vancomycin-resistant enterococci and methicillin-resistant S. aureus were correctly determined by 95.4% and 93.9% of the respondents, respectively. False carbapenem-resistance due to AmpC beta-lactamase, disk diffusion testing for vancomycin in Staphylococcus species, oxacillin and penicillin susceptibility testing in S. lugdunensis and false imipenem-resistance in Proteus species were common sources of inaccurate results. The accuracy of species identification for Corynebacterium species and Vibrio species requires improvement. Consistent problems occurred with antimicrobial susceptibility testing of vancomycin for Staphylococcus species using the disk diffusion method.
Keyword
MeSH Terms
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Aeromonas hydrophila
Bacteria
beta-Lactamases
Candida
Corynebacterium
Cryptococcus neoformans
Surveys and Questionnaires
Diffusion
Korea
Listeria monocytogenes
Malassezia
Methicillin Resistance
Oxacillin
Penicillins
Proteus
Staphylococcus
Staphylococcus aureus
Staphylococcus epidermidis
Staphylococcus lugdunensis
Streptococcus agalactiae
Vancomycin
Vibrio
Vibrio vulnificus
Yeasts
Oxacillin
Penicillins
Vancomycin
beta-Lactamases
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