An In Vivo  Evaluation of the Mycobacterial Filtration Efficacy of Three Breathing Filters Used in Anesthesia

Vézina, Daniel P.; Trépanier, Claude A.; Lessard, Martin; Gourdeau, Marie; Tremblay, Claude; Guidoin, Robert

doi:10.1097/00000542-200407000-00017

Cited by 11 publications

(9 citation statements)

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“…Our study confirmed previous findings from other authors that a HMEF effectively protects the BCS and from microbial contamination, thus allowing to use the BCS over 7 days on multiple patients [2], [4], [13], [14], [15], [16], [17]. All samples obtained from the ventilators and the condensation water yielded no growth.…”

Section: Discussionsupporting

confidence: 90%

Microbiological safety and cost-effectiveness of weekly breathing circuit changes in combination with heat moisture exchange filters: a prospective longitudinal clinical survey

Hübner

Daeschlein²,

Lehmann³

et al. 2011

GMS Krankenhaushygiene Interdisziplinär; 6(1):Doc15; ISSN 1863-5245

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Section: Discussionsupporting

confidence: 90%

Microbiological safety and cost-effectiveness of weekly breathing circuit changes in combination with heat moisture exchange filters: a prospective longitudinal clinical survey

Hübner

Daeschlein²,

Lehmann³

et al. 2011

GMS Krankenhaushygiene Interdisziplinär; 6(1):Doc15; ISSN 1863-5245

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“…Studies examining microbial growth on anaesthetic equipment [5–7] have used swabbing, incubation and analysis, but this takes time and expertise. Over the last decade adenosine triphosphate (ATP) bioluminescence has been increasingly adopted for monitoring surface cleanliness in the food industry [8].…”

mentioning

confidence: 99%

Assessing the efficacy of HME filters at preventing contamination of breathing systems*

Rees¹,

Sheraton²,

Modestini

et al. 2006

Anaesthesia

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SummaryBreathing system filters are intended to prevent cross-infection during anaesthesia. However, there is a lack of information on whether filters prevent contamination of the breathing system by the patient. We measured the contamination of 235 used filters of four different types obtained from operating theatres: two pleated hydrophobic (BB25M and BB22 ⁄ 15M, Pall Medical, Portsmouth, UK) used for adult patients and two electrostatic (355 ⁄ 5430 Hygroboy and 355 ⁄ 5427 Hygrobaby, Tyco Healthcare, Gosport, UK) used for paediatric patients. The filters were swabbed over their internal surfaces on both the patient and the machine sides and these were assessed with the use of adenosine triphosphate bioluminescence. Contamination was present on the machine side of 20 (9%) filters. Current standards for testing of filters has no set 'pass' level and is performed in the laboratory setting. Bioluminescence may be used in the clinical setting to elucidate factors that might increase the chance of cross-contamination between patients.

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“…The addition of a filter at the patient connection port has been shown to prevent contamination of breathing systems [62–65] and a filter does reduce the concentration of air‐borne microbes when tested in vitro [33, 48–52]. However, recent work using a bioluminescence technique has demonstrated that organic soiling of the machine side of filters and breathing systems can occur during anaesthesia [66, 67].…”

Section: Breathing System Filtersmentioning

confidence: 99%

Heat and moisture exchangers and breathing system filters: their use in anaesthesia and intensive care. Part 1 – history, principles and efficiency

Wilkes

2010

Anaesthesia

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SummaryHeat and moisture exchangers and breathing system filters are intended to replace the normal warming, humidifying and filtering functions of the upper airways when these structures are bypassed during anaesthesia and intensive care. Guidance on their use continues to evolve. The aim of this part of the review is to describe the principles of their action and efficiency and to summarise the findings from clinical and laboratory studies. Based on previous studies, an appropriate minimum target for moisture output is 30 and 20 g.m )3 for long-duration use in intensive care and short-duration use in anaesthesia, respectively. The practice of reusing a breathing system in anaesthesia, provided it is protected by a filter, assumes that the filter is effective. However, there is wide variation in the gas-borne filtration performance, and contaminated condensate can potentially pass through some filters under typical pressures encountered during mechanical ventilation.

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An In Vivo Evaluation of the Mycobacterial Filtration Efficacy of Three Breathing Filters Used in Anesthesia

Abstract: Among the three BFs studied, only the Pall BB25A completely prevented the passage of M. chelonae, thus protecting the anesthesia breathing circuit from mycobacterial contamination.

Cited by 11 publications

References 0 publications

Microbiological safety and cost-effectiveness of weekly breathing circuit changes in combination with heat moisture exchange filters: a prospective longitudinal clinical survey

Microbiological safety and cost-effectiveness of weekly breathing circuit changes in combination with heat moisture exchange filters: a prospective longitudinal clinical survey

Assessing the efficacy of HME filters at preventing contamination of breathing systems*

Heat and moisture exchangers and breathing system filters: their use in anaesthesia and intensive care. Part 1 – history, principles and efficiency

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