Analysis of drug resistance on extended spectrum β-lactamases-producing Escherichia coli and Klebsiella pneumoniae / 国际检验医学杂志

ABSTRACT

Objective Analysis of clinical distribution and susceptibility to antimicrobial agents in producing extended spectrumβ-lactamases (ESBLs)of Escherichia coli(ECO)and Klebsiella pneumoniae (KPN).Methods The samples from 2013 April to 2014 December in Changji Prefecture People′s Hospital were cultured and identified,drug sensitivity test did by VITEK2compat au-tomatic bacteria analysis,phenotypic confirmatory test was did on producing ESBLs ECO and KPN,and the clinical distribution and drug resistance was analyzed.Results 1 576 strains of ECO and KPN isolated 306 strains of producing ESBLs strains and 343 strains of multi drug resistant bacteria,the isolation rates were 1 9.4% and 21.8% respectively.In 576 strains of ECO,there were 1 77 strains of producing ESBLs strains and 202 strains of multi drug resistant bacteria were isolated,the separation rates were 30.7% and 35.1% respectively,generic drug resistant strains were not found,and those producing ESBLs strains were isolated mainly from the urine specimens (39.5%),and mainly from the ICU (37.3%)and (29.9%)the surgical ward.There were 129 strains of producing ESBLs strains,141 strains of multi drug resistant bacteria and 4 generic drug resistant strains were isolated from 1 000 strains of KPN,the separation rates were 12.9%,14.1% and 0.4% respectively,and those producing ESBLs strains were isolated mainly from sputum specimens (83.7%),and mainly from the ICU (42.6%)and(29.5%)in the department of inter-nal medicine.Isolation of producing ESBLs ECO and multi drug resistant bacteria were higher than KPN,the difference were statis-tically significant (P <0.05).The sensitivities of ECO and KPN ESBLs strains to carbapenems imipenem andaminoglycosides ami-kacin and compound preparation piperacillin/tazobactam were good,the other antimicrobial drug resistance rates were more than 50.0%.Conclusion ESBLs ECO mainly causes urinary tract infections,KPN mainly causes respiratory tract infection.Detection rates of producing ESBLs ECO and KPN were high,and the multi drug resistance is serious,should strengthen the monitoring of drug resistance on producing ESBLs strains,and according to the results of drug susceptibility,standardize the rational use of anti-microbial agents,and to strengthen the management of antimicrobial agents,delay the occurrence of bacterial resistance.