Performance evaluation of a new mobile air-treatment technology at-rest and under normal work conditions in a convention
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ORIGINAL PAPER
Performance evaluation of a new mobile air-treatment technology at-rest and under normal work conditions in a conventional hematology room Anne Pouvaret 1 & Emmanuelle Tavernier 1 & Jérôme Cornillon 1 & Elisabeth Daguenet 1 & Hélène Raberin 2 & Florence Grattard 2,3 & Philippe Berthelot 2,3,4 & Denis Guyotat 1 Received: 18 February 2020 / Accepted: 2 September 2020 # IUPESM and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Invasive fungal infections incidence in patients with hematological malignancies is increasing. Air treatment remains an essential preventive measure. Guidelines state that high-risk patients should be housed in units equipped with High-Efficiency Particulate Air filtration. Mobile air-treatment devices may be considered as alternatives or as a complement to the ventilation system. We assessed the decontamination performances of a new mobile air-treatment device in a conventional hematology room. This device connected or not to a plenum combining Ultra-Low Particulate Air filtration and non-thermal catalysis process has been evaluated with or without healthcare activities (one sampling at-rest and triplicate samplings in activity). Environmental particulate, airborne and surface fungal and total mesophilic flora (TMF) samplings were performed with a total of 1800 min of particles counting, 144 air and 240 surface samplings. At-rest, both devices achieved a 2-log decrease of airborne particles, ISO 4 being the maximal particle class reached under the plenum. Whatever the healthcare activities and the location in the room, ISO 7 was the maximal particle class reached. TMF and fungal air contamination were lower during healthcare activities when the air portable cleaners were running. The bed was the area the least contaminated in the room. No differences were observed for surface contamination. This work provides arguments of the efficacy of a new mobile air-treatment device to decrease particle counts and airborne bioburden in real-life conditions. Studies have yet to be conducted to document the impact of these devices on the risk of invasive aspergillosis in immunocompromised patients. Keywords Mobile air- treatment unit . Hematology . Invasive aspergillosis . Environmental samplings
1 Introduction
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12553-020-00480-z) contains supplementary material, which is available to authorized users. * Philippe Berthelot [email protected] 1
Department of Clinical Hematology, Institut de Cancérologie Lucien Neuwirth, 42270 Saint-Priest-en-Jarez, France
2
Laboratory of Infectious Agents and Hygiene, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France
3
GIMAP EA3064 (Groupe Immunité des Muqueuses et Agents Pathogènes), COMUE of Lyon, 42023 Saint-Etienne, France
4
Infectious Diseases Department, University Hospital of Saint-Etienne, 42055 Saint-Etienne, France
Control of the bioburden in the air is essential to lower the nosocomial infec
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