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Contaminated sinks in intensive care units: an underestimated source of extended-spectrum beta-lactamase-producing Enterobacteriaceae in the patient environment.
J Hosp Infect 2013; 85(2):106-11JH

Abstract

BACKGROUND

Extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBLE) outbreaks in intensive care units (ICUs) associated with contaminated handwashing sinks have been reported.

AIM

To conduct a regional study to assess whether handwashing sinks in 135 ICU patient rooms are a potential source of contamination, and to identify factors associated with an increased risk of sink contamination.

METHODS

A multicentre study was conducted in 13 ICUs, including microbiological testing for ESBLE contamination at 185 sinks. The micro-organisms isolated were analysed using randomly amplified polymorphic DNA analysis to assess clonal spread in ICUs. Data were collected to document the use of each sink, factors that may contribute to contamination of clinical areas near to the sinks, and routine cleansing procedures for the sinks.

FINDINGS

Fifty-seven sinks were contaminated (31%) with ESBLE, mostly Klebsiella (N = 33) and Enterobacter (N = 18). In two ICUs, a high contamination rate was associated with clonal spread of an epidemic isolate. Risk factors for contamination of and by handwashing sinks were frequent: 81 sinks (44%) were used for handwashing as well as the disposal of body fluids; splash risk was identified for 67 sinks (36%), among which 23 were contaminated by ESBLE. Routine sink disinfection was frequent (85%), mostly daily (75%), and involved quaternary ammonium compounds (41%) or bleach (21%). A lower sink contamination rate was significantly associated with use of the sink being restricted to handwashing and to daily sink disinfection using bleach.

CONCLUSIONS

In ICUs, contaminated sinks are a potential source of ESBLE in the environment of the patient, a problem that may be underestimated by ICU teams. Relatively simple measures may result in a rapid improvement of the situation, and a significant decrease of the risk of exposure of ICU patients to multiresistant Enterobacteriaceae.

Authors+Show Affiliations

Réseau des Hygiénistes du Centre, Hôpital Trousseau, Centre Hospitalier Universitaire, Tours, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Multicenter Study
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24007719

Citation

Roux, D, et al. "Contaminated Sinks in Intensive Care Units: an Underestimated Source of Extended-spectrum Beta-lactamase-producing Enterobacteriaceae in the Patient Environment." The Journal of Hospital Infection, vol. 85, no. 2, 2013, pp. 106-11.
Roux D, Aubier B, Cochard H, et al. Contaminated sinks in intensive care units: an underestimated source of extended-spectrum beta-lactamase-producing Enterobacteriaceae in the patient environment. J Hosp Infect. 2013;85(2):106-11.
Roux, D., Aubier, B., Cochard, H., Quentin, R., & van der Mee-Marquet, N. (2013). Contaminated sinks in intensive care units: an underestimated source of extended-spectrum beta-lactamase-producing Enterobacteriaceae in the patient environment. The Journal of Hospital Infection, 85(2), pp. 106-11. doi:10.1016/j.jhin.2013.07.006.
Roux D, et al. Contaminated Sinks in Intensive Care Units: an Underestimated Source of Extended-spectrum Beta-lactamase-producing Enterobacteriaceae in the Patient Environment. J Hosp Infect. 2013;85(2):106-11. PubMed PMID: 24007719.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Contaminated sinks in intensive care units: an underestimated source of extended-spectrum beta-lactamase-producing Enterobacteriaceae in the patient environment. AU - Roux,D, AU - Aubier,B, AU - Cochard,H, AU - Quentin,R, AU - van der Mee-Marquet,N, AU - ,, Y1 - 2013/09/03/ PY - 2013/06/12/received PY - 2013/07/29/accepted PY - 2013/9/7/entrez PY - 2013/9/7/pubmed PY - 2014/4/3/medline KW - Contamination KW - Extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBLE) KW - Handwashing KW - Intensive care unit KW - Sink SP - 106 EP - 11 JF - The Journal of hospital infection JO - J. Hosp. Infect. VL - 85 IS - 2 N2 - BACKGROUND: Extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBLE) outbreaks in intensive care units (ICUs) associated with contaminated handwashing sinks have been reported. AIM: To conduct a regional study to assess whether handwashing sinks in 135 ICU patient rooms are a potential source of contamination, and to identify factors associated with an increased risk of sink contamination. METHODS: A multicentre study was conducted in 13 ICUs, including microbiological testing for ESBLE contamination at 185 sinks. The micro-organisms isolated were analysed using randomly amplified polymorphic DNA analysis to assess clonal spread in ICUs. Data were collected to document the use of each sink, factors that may contribute to contamination of clinical areas near to the sinks, and routine cleansing procedures for the sinks. FINDINGS: Fifty-seven sinks were contaminated (31%) with ESBLE, mostly Klebsiella (N = 33) and Enterobacter (N = 18). In two ICUs, a high contamination rate was associated with clonal spread of an epidemic isolate. Risk factors for contamination of and by handwashing sinks were frequent: 81 sinks (44%) were used for handwashing as well as the disposal of body fluids; splash risk was identified for 67 sinks (36%), among which 23 were contaminated by ESBLE. Routine sink disinfection was frequent (85%), mostly daily (75%), and involved quaternary ammonium compounds (41%) or bleach (21%). A lower sink contamination rate was significantly associated with use of the sink being restricted to handwashing and to daily sink disinfection using bleach. CONCLUSIONS: In ICUs, contaminated sinks are a potential source of ESBLE in the environment of the patient, a problem that may be underestimated by ICU teams. Relatively simple measures may result in a rapid improvement of the situation, and a significant decrease of the risk of exposure of ICU patients to multiresistant Enterobacteriaceae. SN - 1532-2939 UR - https://www.unboundmedicine.com/medline/citation/24007719/Contaminated_sinks_in_intensive_care_units:_an_underestimated_source_of_extended_spectrum_beta_lactamase_producing_Enterobacteriaceae_in_the_patient_environment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0195-6701(13)00257-0 DB - PRIME DP - Unbound Medicine ER -