铜绿假单胞菌爆发与水槽排水设计有关

Moi Lin Ling MBBS, FRCPA, CPHQ, MBA , Kue Bien How BSc(Nursing), CIC
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引用次数: 9

摘要

本文描述了2009年1月8日至3月24日在血液科病房发生的铜绿假单胞菌(PAE)暴发。4例患者因PAE引起的保健相关感染在腹股沟、血液和肛周组织中恢复。本报告强调了与使用汇相关的风险,并概述了用于管理疫情的方法。方法后续调查表明,受污染的水槽排水系统可能是传染源。在总共采集的21个环境样本中,来自水槽排水系统的两个样本显示出与暴发患者相似的易感模式。用不同的方式对水槽排水系统进行了四个周期的消毒。尽管使用了几种清洁方案,但在水槽排水管的多个凹槽处发现spae污染证明难以充分消毒。在将水槽排水系统改为无沟槽后,疫情最终终止,从而防止了PAE的进一步定植。结论:我们的经验表明,水槽排水系统的设计可能是免疫功能低下患者PAE污染的潜在来源。
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Pseudomonas aeruginosa outbreak linked to sink drainage design

Background

This paper describes an outbreak of Pseudomonas aeruginosa (PAE) that occurred in a haematology ward between 8 January and 24 March 2009. Four patients had healthcare-associated infections due to PAE which was recovered in the groin, blood and perianal tissue.

Aim

This report highlights the risks associated with the use of sinks and outlines the approach used to manage the outbreak.

Methods

Subsequent investigations showed that a contaminated sink drainage system represented the possible source of spread. Of a total of 21 environmental samples taken, two samples from the sink drainage system showed a similar susceptibility pattern as the patients involved in the outbreak. Four cycles of disinfection of the sink drainage systems were attempted with various modalities.

Findings

PAE contamination of the sink drains at the multiple grooves in the drains proved difficult to disinfect adequately, despite using several cleaning protocols. The outbreak was finally terminated following a change in the sink drainage system to one without grooves, hence preventing any further PAE colonisation.

Conclusion

Our experience demonstrated that the design of the sink drainage system may be a potential source of PAE contamination for an immunocompromised patient.

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