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Both microbiological surveillance and audit of procedures improve reprocessing of flexible bronchoscopes and patient safety

Published online by Cambridge University Press:  10 September 2021

Philippe Saliou Open the ORCID record for Philippe Saliou [Opens in a new window] ,
Lila Calmettes ,
Hervé Le Bars ,
Christopher Payan ,
Valérie Narbonne ,
Geneviève Héry-Arnaud ,
Elodie Moalic ,
Christophe Gut-Gobert  and
Raoul Baron
Philippe Saliou*
Affiliation:
Infection Control Unit, Brest Teaching Hospital, Brest, France Univ Brest, Inserm, EFS, UMR 1078 GGB, F-29200 Brest, France Université de Bretagne Occidentale, Brest, France
Lila Calmettes
Affiliation:
Infection Control Unit, Brest Teaching Hospital, Brest, France Université de Bretagne Occidentale, Brest, France
Hervé Le Bars
Affiliation:
Department of microbiology, Brest Teaching Hospital, Brest, France
Christopher Payan
Affiliation:
Univ Brest, Inserm, EFS, UMR 1078 GGB, F-29200 Brest, France Université de Bretagne Occidentale, Brest, France Department of microbiology, Brest Teaching Hospital, Brest, France
Valérie Narbonne
Affiliation:
Department of microbiology, Brest Teaching Hospital, Brest, France
Geneviève Héry-Arnaud
Affiliation:
Univ Brest, Inserm, EFS, UMR 1078 GGB, F-29200 Brest, France Université de Bretagne Occidentale, Brest, France Department of microbiology, Brest Teaching Hospital, Brest, France
Elodie Moalic
Affiliation:
Department of microbiology, Brest Teaching Hospital, Brest, France
Christophe Gut-Gobert
Affiliation:
Department of pneumology, Brest Teaching Hospital, France
Raoul Baron
Affiliation:
Infection Control Unit, Brest Teaching Hospital, Brest, France
*
Author for correspondence: Philippe Saliou, E-mail: [email protected]
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Abstract

Background:

Microbiological surveillance of bronchoscopes and automatic endoscope reprocessors (AERs)/washer disinfectors as a quality control measure is controversial. Experts also are divided on the infection risks associated with bronchoscopic procedures.

Objective:

We evaluated the impact of routine microbiological surveillance and audits of cleaning/disinfection practices on contamination rates of reprocessed bronchoscopes.

Design:

Audits were conducted of reprocessing procedures and microbiological surveillance on all flexible bronchoscopes used from January 2007 to June 2020 at a teaching hospital in France. Contamination rates per year were calculated and analyzed using a Poisson regression model. The risk factors for microbiological contamination were analyzed using a multivariable logistical regression model.

Results:

In total, 478 microbiological tests were conducted on 91 different bronchoscopes and 57 on AERs. The rate of bronchoscope contamination significantly decreased between 2007 and 2020, varying from 30.2 to 0% (P < .0001). Multivariate analysis confirmed that retesting after a previous contaminated test was significantly associated with higher risk of bronchoscope contamination (OR, 2.58; P = .015). This finding was explained by the persistence of microorganisms in bronchoscopes despite repeated disinfections. However, the risk of persistent contamination was not associated with the age of the bronchoscope.

Conclusions:

Our results confirm that bronchoscopes can remain contaminated despite repeated reprocessing. Routine microbial testing of bronchoscopes for quality assurance and audit of decontamination and disinfection procedures can improve the reprocessing of bronchoscopes and minimize the rate of persistent contamination.

Type
Original Article
Information
Infection Control & Hospital Epidemiology , Volume 43 , Issue 10 , October 2022 , pp. 1466 - 1472
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Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of The Society for Healthcare Epidemiology of America

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