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J Hosp Infect. 2018 Jul;99(3):290-294. doi: 10.1016/j.jhin.2018.01.005. Epub 2018 Jan 11.

Persistent contamination of heater-cooler units for extracorporeal circulation cured by chlorhexidine-alcohol in water tanks.

Author information

1
Hydrosciences Montpellier, IRD, CNRS, Univ Montpellier, Département d'Hygiène Hospitalière, CHU Montpellier, Montpellier, France. Electronic address: sara.romano-bertrand@umontpellier.fr.
2
Département d'Hygiène Hospitalière, CHU Montpellier, Montpellier, France.
3
Hydrosciences Montpellier, IRD, CNRS, Univ Montpellier, Montpellier, France.
4
PhyMedExp, INSERM, CNRS, Univ Montpellier, Service de Chirurgie Thoracique et Cardiovasculaire, CHU Montpellier, Montpellier, France.
5
Hydrosciences Montpellier, IRD, CNRS, Univ Montpellier, Département d'Hygiène Hospitalière, CHU Montpellier, Montpellier, France.

Abstract

Recently, surgical site infections due to non-tuberculous mycobacteria (NTM) have been linked to heater-cooler unit contamination. The European Centre for Disease Prevention and Control and manufacturers now recommend the use of hydrogen peroxide in filtered water to fill heater-cooler unit tanks. After implementation of these measures in our hospital, heater-cooler units became heavily contaminated by opportunistic waterborne pathogens such as Pseudomonas aeruginosa and Stenotrophomonas maltophilia. No NTM were detected but fast-growing resistant bacteria could impair their detection. The efficiency of hydrogen peroxide and chlorhexidine-alcohol was compared in situ. Chlorhexidine-alcohol treatment stopped waterborne pathogen contamination and NTM were not cultured whereas their detection efficiency was probably improved.

KEYWORDS:

Chlorhexidine–alcohol; Heater–cooler units; Non-tuberculous mycobacteria; Pseudomonas aeruginosa; Stenotrophomonas maltophilia

PMID:
29331660
DOI:
10.1016/j.jhin.2018.01.005
[Indexed for MEDLINE]

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