Antimicrobial resistance of bacteria isolated from urine specimens: surveillance report from Hunan Province Antimicrobial Resistance Surveillance System, 2012-2021
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1.Department of Laboratory Medicine, Changsha Central Hospital, Changsha 410004, China;2.Department of Laboratory Medicine, The Third Xiangya Hospital of Central South University, Changsha 410013, China;3.Department of Laboratory Medicine, Liuyang Traditional Chinese Medicine Hospital, Liuyang 410300, China;4.Department of Laboratory Medicine, Xiangya Hospital, Central South University, Changsha 410008, China;5.Department of Laboratory Medicine, Xiangtan Central Hospital, Xiangtan 411100, China;6.Medical Laboratory and Patho-logy Center, The First Hospital of Hunan University of Chinese Medicine, Changsha 410011, China;7.Department of Laboratory Medicine, The First Hospital of Changsha, Changsha 410005, China;8.Department of Laboratory Medicine, Zhangjiajie People's Hospital, Zhangjiajie 427000, China;9.Center for Laboratory Medicine, The First People's Hospital of Chenzhou, Chenzhou 423000, China;10.Center for Healthcare-associated Infection Control, Xiangya Hospital, Central South University, Changsha 410008, China;11.Hunan Province Antimicrobial Resistance Surveillance System Office, Changsha 410008, China;12.National Clinical Research Center for Geriatric Disorders [Xiangya Hospital], Changsha 410008, China;13.Hunan Provincial Healthcare-associated Infection Management Quality Control Center, Changsha 410008, China

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    Abstract:

    Objective To understand the distribution and antimicrobial resistance of bacteria from clinical urine specimens in Hunan Province, and provide scientific basis for anti-infection treatment of patients with urinary tract infection (UTI). Methods Bacterial resistance surveillance was carried out according to the technical scheme requirements of China Antimicrobial Resistance Surveillance System, antimicrobial susceptibility testing results were judged based on standard of American Clinical and Laboratory Standards Institute, data about strains and antimicrobial resistance of bacteria from urine specimens reported by member units of Hunan Province Antimicrobial Resistance Surveillance System in 2012-2021 were analyzed with WHONET 5.6 software. Results A total of 379 330 strains of bacteria were isolated from urine specimens in 2012-2021, Gram-negative and Gram-positive bacteria accounted for 75.3% (72.4%-76.0%) and 24.7% (24.0%-27.6%), respectively. The top 5 Gram-negative bacteria were Escherichia coli (48.3%), Klebsiella pneumoniae (8.4%), Proteus mirabilis (3.3%), Pseudomonas aeruginosa (3.0%) and Enterobacter cloacae (1.6%). The top 5 Gram-positive bacteria were Enterococcus faecium (8.1%), Enterococcus faecalis (6.6%), Staphylococcus epidermidis (1.9%), Staphylococcus aureus (1.9%) and Staphylococcus haemolyticus (1.4%). The constituent of bacteria isolated from urine specimens of patients in different gender and age groups were different. Escherichia coli ranked first, accounting for 34.8% and 57.2% in males and females, respectively, as well as 49.0% and 34.4% in adults and children, respectively. Escherichia coli maintained high susceptibility to carbapenems, amikacin, tigecycline, cefoperazone/sulbactam and furantoin, with resistance rate < 10%, while resistance to cefazolin, cefuroxime, ceftriaxone, cefotaxime and quinolones were relatively higher, with resistance rate >48%; resistance rates to ceftazidime, ceftriaxone, cefotaxime, cefepime and aztreonam presented decreased trend (all P < 0.001). Klebsiella pneumoniae maintained higher susceptibility to carbapenems, amikacin and tigecycline, with resistance rate < 11%, resistance rate to quinolones was much lower than that of Escherichia coli. Enterococcus faecium and Enterococcus faecalis maintained high susceptibility to vancomycin, teicoplanin and linezolid, with resistance rates < 5%; resistance rate of Enterococcus faecalis to ampicillin and furantoin was < 15%. Except for linezolid and minocycline, resistance rates of Enterococcus faecium to the other tested antimicrobial agents were all higher than Enterococcus faecalis. No Staphylococcus aureus was found to be resistant to vancomycin, linezolid and teicoplanin. Conclusion Escherichia coli is the main bacteria isolated from urine specimens from various member units of Hunan Province Antimicrobial Resistance Surveillance System. In early empirical treatment, clinical antimicrobial should be targetedly used as early as possible based on bacterial identification and antimicrobial susceptibility testing results, so as to improve treatment effectiveness and slow down the emergence of antimicrobial resistance.

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税剑,陈丽华,李晨,等.湖南省细菌耐药监测网2012—2021年尿标本分离细菌耐药监测报告[J].中国感染控制杂志英文版,2024,23(4):448-457. DOI:10.12138/j. issn.1671-9638.20245412.
Jian SHUI, Li-hua CHEN, Chen LI, et al. Antimicrobial resistance of bacteria isolated from urine specimens: surveillance report from Hunan Province Antimicrobial Resistance Surveillance System, 2012-2021[J]. Chin J Infect Control, 2024,23(4):448-457. DOI:10.12138/j. issn.1671-9638.20245412.

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  • Received:January 22,2024
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  • Online: June 24,2024
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