Analysis of drug resistance of fungi and bacteria detected by using blood culture in 1 176 cases / 国际检验医学杂志

ABSTRACT

Objective To investigate the drug resistance of fungi and bacteria detected by using blood culture from 2010 to 2013. Methods BacT/Alert 3D blood culture system was used,Then VITEK microbiological analyzer was used to identify the bacteria and perform drug sensitivity test,the results were analyzed using WHONET5.4 software.Results There were 108 positive speci-mens among 1 176 samples,the detection rate was 9.18%.Among 123 isolates,60 strains were gram positive(48.78%),47 strains were gram negative(38.21%),16 strains was fungus(13.01%).The major five kinds of pathogenic bacteria were coagulase nega-tive staphylococcus(CNS,44 strains),Escherichia coli (18 strains),Klebsiella pneumoniae (15 strains),candida albicans (10 strains)and Staphylococcus aureus(7 strains).The detection rate of methicillin resistant coagulase negative staphylococci(MRCNS) and Staphylococcus aureus(MRSA)were 72.73%(32/44)in CNS strains and 57.14% (4/7)in Staphylococcus aureus strains,the antibiotic resistance rates of MRSA and MRCNS were significantly higher than that of MSSA and MSCNS,none of Staphylococcus aureus strain was resistant to vancomycin and linezolid.The sensitive rate of Candida albicans to fluconazole,ketoconazole and mi-conazole was high.50% of Escherichia coli strains and 40% percent of Klebsiella pneumoniae strains produced extended spectrum beta-lactamases(ESBLs).The sensitive rate of Enterobacteriaceae to imipenem and meropenem were both 100.00%.The sensitive rate of Pseudomonas aeruginosa to cefoperazone/shubatan,piperacillin/tazobactam were both high.Conclusion CNS is the major kind of bacteria in blood culture.The antibiotic resistance of bacteria is increasing and it is necessary to pay attention to blood cul-ture results in order to guide the clinical use of drugs.