About: Reprocessing filtering facepiece respirators in primary care using medical autoclave: prospective, bench-to-bedside, single-centre study

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About: Reprocessing filtering facepiece respirators in primary care using medical autoclave: prospective, bench-to-bedside, single-centre study Goto Sponge NotDistinct Permalink

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Reprocessing filtering facepiece respirators in primary care using medical autoclave: prospective, bench-to-bedside, single-centre study
Creator	Bouman, Jonathan Harskamp, Ralf Horeman, Tim Van Den Dobbelsteen, John Van Straten, Bart Van Der Sijp, Joost Van Maltha -Van Santvoort, Bernadette
source	Medline; PMC
abstract	OBJECTIVE: There are widespread shortages of personal protective equipment as a result of the COVID-19 pandemic. Reprocessing filtering facepiece particle (FFP)-type respirators may provide an alternative solution in keeping healthcare professionals safe. DESIGN: Prospective, bench-to-bedside. SETTING: A primary care-based study using FFP-2 respirators without exhalation valve (3M Aura 1862+ (20 samples), Maco Pharma ZZM002 (14 samples)), FFP-2 respirators with valve (3M Aura 9322+ (six samples) and San Huei 2920V (16 samples)) and valved FFP type 3 respirators (Safe Worker 1016 (10 samples)). INTERVENTIONS: All masks were reprocessed using a medical autoclave (17 min at 121°C with 34 min total cycle time) and subsequently tested up to three times whether these respirators retained their integrity (seal check and pressure drop) and ability to filter small particles (0.3–5.0 µm) in the laboratory using a particle penetration test. RESULTS: We tested 33 respirators and 66 samples for filter capacity. All FFP-2 respirators retained their shape, whereas half of the decontaminated FFP-3 respirators showed deformities and failed the seal check. The filtering capacity of the 3M Aura 1862 was best retained after one, two and three decontamination cycles (0.3 µm: 99.3%±0.3% (new) vs 97.0±1.3, 94.2±1.3% or 94.4±1.6; p<0.001). Of the other FFP-2 respirators, the San Huei 2920 V had 95.5%±0.7% at baseline vs 92.3%±1.7% vs 90.0±0.7 after one-time and two-time decontaminations, respectively (p<0.001). The tested FFP-3 respirator (Safe Worker 1016) had a filter capacity of 96.5%±0.7% at baseline and 60.3%±5.7% after one-time decontamination (p<0.001). Breathing and pressure resistance tests indicated no relevant pressure changes between respirators that were used once, twice or thrice. CONCLUSION: This small single-centre study shows that selected FFP-2 respirators may be reprocessed for use in primary care, as the tested masks retain their shape, ability to retain particles and breathing comfort after decontamination using a medical autoclave.
has issue date	2020-08-04(xsd:dateTime)
bibo:doi	10.1136/bmjopen-2020-039454
bibo:pmid	32753454
has license	cc-by
sha1sum (hex)	76b663c72028b9e8883d2dc0cbe6fe2f5545f3a8
schema:url	https://doi.org/10.1136/bmjopen-2020-039454
resource representing a document's title	Reprocessing filtering facepiece respirators in primary care using medical autoclave: prospective, bench-to-bedside, single-centre study
has PubMed Central identifier	PMC7406112
has PubMed identifier	32753454
schema:publication	BMJ Open
resource representing a document's body	covid:76b663c72028b9e8883d2dc0cbe6fe2f5545f3a8#body_text
is schema:about of	named entity 'FFP-2' named entity 'autoclave' named entity 'Netherlands' named entity 'Italy' named entity 'NEN' named entity 'Amsterdam' named entity 'England' named entity 'FFP3' named entity 'COVID-19' named entity 'FFP-2' named entity 'Fremont, CA' named entity 'particle counter' named entity 'COVID-19' named entity 'harder to breathe' named entity 'ffp2' named entity 'FFP-2' named entity 'sample size' named entity 'pressure sensor' named entity 'viral load' named entity 'autoclave' named entity 'COVID-19 pandemic' named entity 'respirator' named entity 'SARS-CoV-2' named entity 'Cohort study' named entity 'autoclave' named entity 'autoclave' named entity 'NEN' named entity 'RIVM' named entity 'FFP-2' named entity 'CC-BY licence' named entity 'particle counter' named entity 'BMJ' named entity 'clinical investigator' named entity 'FFP-2' named entity 'Delft' named entity 'epub' named entity 'JASP' named entity 'COVID-19' named entity 'SARS-CoV-2' named entity 'SARS-CoV-2' named entity 'Volt' named entity 'Quattro Castella' named entity 'autoclave' named entity 'primary care' named entity 'COVID-19' named entity 'CDC' named entity 'aerosol' named entity 'saturated steam' named entity 'N95 respirators' named entity 'respirator' named entity 'health care facilities' named entity 'FFP-2' named entity 'aerosols' named entity 'Quattro Castella' named entity 'autoclave' named entity 'FFP2' named entity 'Case-control study' named entity 'autoclave' named entity 'COVID-19 pandemic' named entity 'Volt' named entity 'influenza virus' named entity 'respirator' named entity 'BMJ' named entity 'primary care' named entity 'standard deviation' named entity 'COVID-19 pandemic' named entity 'penetration test' named entity 'Delft University of Technology' named entity 'Cohort study' named entity 'FFP-2' named entity 'autoclave' named entity 'pressure sensor' named entity 'clinical evidence' named entity 'autoclave' named entity 'surgical masks'

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