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Impact of three biological decontamination methods on filtering facepiece respirator fit, odor, comfort, and donning ease.
J Occup Environ Hyg. 2011 Jul; 8(7):426-36.JO

Abstract

The objective of this study was to determine if ultraviolet germicidal irradiation (UVGI), moist heat incubation (MHI), or microwave-generated steam (MGS) decontamination affects the fitting characteristics, odor, comfort, or donning ease of six N95 filtering facepiece respirator (FFR) models. For each model, 10 experienced test subjects qualified for the study by passing a standard OSHA quantitative fit test. Once qualified, each subject performed a series of fit tests to assess respirator fit and completed surveys to evaluate odor, comfort, and donning ease with FFRs that were not decontaminated (controls) and with FFRs of the same model that had been decontaminated. Respirator fit was quantitatively measured using a multidonning protocol with the TSI PORTACOUNT Plus and the N95 Companion accessory (designed to count only particles resulting from face to face-seal leakage). Participants' subjective appraisals of the respirator's odor, comfort, and donning ease were captured using a visual analog scale survey. Wilcoxon signed rank tests compared median values for fit, odor, comfort, and donning ease for each FFR and decontamination method against their respective controls for a given model. Two of the six FFRs demonstrated a statistically significant reduction (p < 0.05) in fit after MHI decontamination. However, for these two FFR models, post-decontamination mean fit factors were still ≥ 100. One of the other FFRs demonstrated a relatively small though statistically significant increase (p < 0.05) in median odor response after MHI decontamination. These data suggest that FFR users with characteristics similar to those in this study population would be unlikely to experience a clinically meaningful reduction in fit, increase in odor, increase in discomfort, or increased difficulty in donning with the six FFRs included in this study after UVGI, MHI, or MGS decontamination. Further research is needed before decontamination of N95 FFRs for purposes of reuse can be recommended.

Authors+Show Affiliations

National Institute for Occupational Safety and Health, National Personal Protective Technology Laboratory, Pittsburgh, Pennsylvania 15236, USA.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Evaluation Study
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

21732856

Citation

Viscusi, Dennis J., et al. "Impact of Three Biological Decontamination Methods On Filtering Facepiece Respirator Fit, Odor, Comfort, and Donning Ease." Journal of Occupational and Environmental Hygiene, vol. 8, no. 7, 2011, pp. 426-36.
Viscusi DJ, Bergman MS, Novak DA, et al. Impact of three biological decontamination methods on filtering facepiece respirator fit, odor, comfort, and donning ease. J Occup Environ Hyg. 2011;8(7):426-36.
Viscusi, D. J., Bergman, M. S., Novak, D. A., Faulkner, K. A., Palmiero, A., Powell, J., & Shaffer, R. E. (2011). Impact of three biological decontamination methods on filtering facepiece respirator fit, odor, comfort, and donning ease. Journal of Occupational and Environmental Hygiene, 8(7), 426-36. https://doi.org/10.1080/15459624.2011.585927
Viscusi DJ, et al. Impact of Three Biological Decontamination Methods On Filtering Facepiece Respirator Fit, Odor, Comfort, and Donning Ease. J Occup Environ Hyg. 2011;8(7):426-36. PubMed PMID: 21732856.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Impact of three biological decontamination methods on filtering facepiece respirator fit, odor, comfort, and donning ease. AU - Viscusi,Dennis J, AU - Bergman,Michael S, AU - Novak,Debra A, AU - Faulkner,Kimberly A, AU - Palmiero,Andrew, AU - Powell,Jeffrey, AU - Shaffer,Ronald E, PY - 2011/7/8/entrez PY - 2011/7/8/pubmed PY - 2011/11/4/medline SP - 426 EP - 36 JF - Journal of occupational and environmental hygiene JO - J Occup Environ Hyg VL - 8 IS - 7 N2 - The objective of this study was to determine if ultraviolet germicidal irradiation (UVGI), moist heat incubation (MHI), or microwave-generated steam (MGS) decontamination affects the fitting characteristics, odor, comfort, or donning ease of six N95 filtering facepiece respirator (FFR) models. For each model, 10 experienced test subjects qualified for the study by passing a standard OSHA quantitative fit test. Once qualified, each subject performed a series of fit tests to assess respirator fit and completed surveys to evaluate odor, comfort, and donning ease with FFRs that were not decontaminated (controls) and with FFRs of the same model that had been decontaminated. Respirator fit was quantitatively measured using a multidonning protocol with the TSI PORTACOUNT Plus and the N95 Companion accessory (designed to count only particles resulting from face to face-seal leakage). Participants' subjective appraisals of the respirator's odor, comfort, and donning ease were captured using a visual analog scale survey. Wilcoxon signed rank tests compared median values for fit, odor, comfort, and donning ease for each FFR and decontamination method against their respective controls for a given model. Two of the six FFRs demonstrated a statistically significant reduction (p < 0.05) in fit after MHI decontamination. However, for these two FFR models, post-decontamination mean fit factors were still ≥ 100. One of the other FFRs demonstrated a relatively small though statistically significant increase (p < 0.05) in median odor response after MHI decontamination. These data suggest that FFR users with characteristics similar to those in this study population would be unlikely to experience a clinically meaningful reduction in fit, increase in odor, increase in discomfort, or increased difficulty in donning with the six FFRs included in this study after UVGI, MHI, or MGS decontamination. Further research is needed before decontamination of N95 FFRs for purposes of reuse can be recommended. SN - 1545-9632 UR - https://www.unboundmedicine.com/medline/citation/21732856/Impact_of_three_biological_decontamination_methods_on_filtering_facepiece_respirator_fit_odor_comfort_and_donning_ease_ L2 - http://www.tandfonline.com/doi/full/10.1080/15459624.2011.585927 DB - PRIME DP - Unbound Medicine ER -