2010—2012年万古霉素对耐甲氧西林金黄色葡萄球菌MIC值的变化
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彭俊

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R969.3

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Vancomycin MIC values in methicillinresistant Staphylococcus aureus clinical isolates from 2010 to 2012
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    摘要:

    目的了解万古霉素对不同标本来源的耐甲氧西林金黄色葡萄球菌(MRSA)最低抑菌浓度(MIC)值的变化。方法收集某院2010—2012年临床分离的MRSA菌株,测定MRSA万古霉素MIC值;并按不同标本来源,对菌株万古霉素MIC值进行分析。结果3年共收集金黄色葡萄球菌1 434株,其中分离自痰标本857株,血液标本239株,其他标本338株;2010—2012年MRSA检出率分别为41.12%(169/411)、44.96%(214/476)和48.08%(263/547)。2010—2012年血液标本分离的金黄色葡萄球菌MRSA检出率分别为29.03%、30.86%、30.21%,痰标本分离的金黄色葡萄球菌MRSA检出率分别为46.89%、51.03%、57.10%;3年间痰标本MRSA检出率均高于血液标本(χ2值分别为6.41、10.36、21.43,均P<0.05)。血液及痰标本分离的MRSA对万古霉素均敏感。2010—2012年血液标本分离的MRSA万古霉素MIC≥1.00 μg/mL菌株分别占38.89%(7株)、40.00%(10株)及37.93%(11株),3年间比较,差异无统计学意义(χ2=0.02,P=0.999);痰液分离的MRSA万古霉素MIC≥1.00 μg/mL菌株分别占36.28%(41株)、40.94%(61株)及49.73%(92株),3年比较,差异亦无统计学意义(χ2=5.72,P=0.057)。结论该院2010—2012年临床MRSA检出率呈增高趋势。痰标本的MRSA检出率及万古霉素MIC值有所增高;血液标本的MRSA检出率及万古霉素MIC变化不明显。

    Abstract:

    ObjectiveTo analyze vancomycin minimum inhibitory concentration (MIC) in methicillinresistant Staphylococcus aureus (MRSA) isolated from different clinical specimens.MethodsFrom 2010 to 2012, MRSA were identified and vancomycin MIC in MRSA was determined by VITEK 2 COMPACT; vancomycin MIC values were analyzed.ResultsA total of 1 434 isolates of Staphylococcus aureus were detected, including 857 sputum specimens, 239 blood specimens,and 338 other specimens; MRSA isolation rate of all specimens was 41.12% (169/411), 44.96% (214/476) and 48.08% (263/547) respectively. MRSA isolation rate of blood specimens was 29.03%,30.86% and 30.21% respectively, and sputum was 46.89%,51.03% and 57.10% respectively; MRSA isolation rate of sputum was higher than that of blood specimens (χ2= 6.41, 10.36, 21.43 respectively, all P<0.05). All strains were sensitive to vancomycin. The percentage of vancomycin MIC≥1.00 μg/mL in MRSA from blood specimens was 38.89%(7 isolates),40.00%(10 isolates)and 37.93%(11 isolates)in 2010-2012 respectively(χ2=0.02,P=0.999),and from sputum specimens was 36.28%(41 isolates), 40.94%(61 isolates) and 49.73% (92 isolates)respectively(χ2=5.72,P=0.057).ConclusionThe detection rate of MRSA clinical isolates has shown an increased trend from 2010 to 2012. Detection rate of MRSA from sputum was higher than that of blood specimens; detection rate and vancomycin MIC value of MRSA from sputum specimens increased a little; detection rate and vancomycin MIC value of blood specimens didn’t change obviously.

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彭俊,顾敏,蒋最明,等.2010—2012年万古霉素对耐甲氧西林金黄色葡萄球菌MIC值的变化[J]. 中国感染控制杂志,2013,12(5):344-346. DOI:10.3969/j. issn.1671-9638.2013.05.006.
PENG Jun, GU Min, JIANG Zuiming, et al. Vancomycin MIC values in methicillinresistant Staphylococcus aureus clinical isolates from 2010 to 2012[J]. Chin J Infect Control, 2013,12(5):344-346. DOI:10.3969/j. issn.1671-9638.2013.05.006.

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  • 收稿日期:2013-01-24
  • 最后修改日期:2013-05-22
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  • 在线发布日期: 2013-09-30
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