Survey on environmental prevalence of carbapenem-resistant Klebsiella pneumoniae in intensive care unit of a general hospital
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R181.3+2

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    Abstract:

    Objective To survey the enviromental contamination of carbapenem-resistant Klebsiella pneumoniae(CRKP) in intensive care unit (ICU) and carriage of drug resistance genes of CRKP. Methods Specimens collected from high-touch object surface, object surface in public area, wall and drain holes of sink in 5 surgical ICUs were performed microbial isolation by mSuper CARBA chromogenic medium, targeted strains were identified by MALDI-TOF mass spectrometry, carbapenemase phenotype of CRKP was identified by double-disk synergy method, KPC and NDM resistance genes were detected by polymerase chain reaction (PCR). Results The isolation proportion of CRKP from high-touch object surface (1/73), object surface in public area (1/89), attendants' clothing (1/24) were very low, but from drain hole of sink was higher (25/29). Identification of carbapenemase phenotype showed that 5 strains produced class A enzyme and 11 strains produced class B metalloenzyme; PCR results showed that 2 strains carried KPC resistance genes and 3 strains carried NDM resistance genes. Conclusion Colonization rate of CRKP on high-touch object surface in ICU is low, but contamination rate of drain hole of sink is high. The results of resis-tance phenotype enzyme identification and PCR revealed that cross transmission of CRKP in ICU may be low if environmental cleaning and disinfection measures are strictly implemented.

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史庆丰, 黄英男, 孙伟,等.某综合医院重症监护病房耐碳青霉烯类肺炎克雷伯菌环境流行调查[J].中国感染控制杂志英文版,2020,19(12):1093-1097. DOI:10.12138/j. issn.1671-9638.20206069.
SHI Qing-feng, HUANG Ying-nan, SUN Wei, et al. Survey on environmental prevalence of carbapenem-resistant Klebsiella pneumoniae in intensive care unit of a general hospital[J]. Chin J Infect Control, 2020,19(12):1093-1097. DOI:10.12138/j. issn.1671-9638.20206069.

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History
  • Received:December 13,2019
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  • Online: December 28,2020
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