Evaluation of a Large-Scale Quantitative Respirator-Fit Testing Program for Healthcare Workers: Survey Results

Wilkinson, Irene J; Pisaniello, Dino; Ahmad, Junaid; Edwards, Suzanne

doi:10.1086/655460

Cited by 56 publications

(84 citation statements)

References 17 publications

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“…Our data indicate no statistically significant differences between FFR models passing the pre-exercise fit tests; the pass rates (FF !100) are in line with those of other reported studies. [10][11][12] The failures of both models on the initial fit tests reflect the recognition that there is high variability in obtaining a good fit with the FFR 13,14 as a result of numerous factors (facial anthropometrics, respirator style and features, material quality, training, experience, etc); therefore, no single FFR model is likely to obtain a passing score each time it is tested. However, of subjects passing the pre-exercise fit test, a significant number failed on the postexercise test with the N95 FFR, but not with the P100 FFR ( Table 2).…”

Section: Discussionmentioning

confidence: 99%

Physiologic and fit factor profiles of N95 and P100 filtering facepiece respirators for use in hot, humid environments

Kim

Powell

et al. 2016

American Journal of Infection Control

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Section: Discussionmentioning

confidence: 99%

Physiologic and fit factor profiles of N95 and P100 filtering facepiece respirators for use in hot, humid environments

Kim

Powell

et al. 2016

American Journal of Infection Control

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“…A fit testing programme is recommended for dental healthcare providers, in which the selection of the most suitable model should be made by an experienced fit tester who would determine the best fit based on facial dimensions, ethnicity and appearance of fit. These recommendations have proven to be useful in the past (McMahon et al 2008, Wilkinson et al 2010, Danyluk & Hon 2011.…”

Section: Which Model Should I Choose?mentioning

confidence: 99%

Role of respirators in controlling the spread of novel coronavirus (COVID‐19) amongst dental healthcare providers: a review

2020

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Umer F, Haji Z, Zafar K. Role of respirators in controlling the spread of novel coronavirus (COVID-19) amongst dental healthcare providers: a review. International Endodontic Journal.During the ongoing COVID-19 pandemic, healthcare professionals are at the forefront of managing the highly infectious coronavirus. As the most common route of transmission is via aerosols and droplet inhalation, it is critical for healthcare workers to have the correct personal protective equipment (PPE) including gowns, masks and goggles. Surgical masks are not effective in preventing the influenza and SARS, so they are unlikely to be able to resist contaminated aerosols from entering the respiratory system. Therefore, it is vital to use respirators which have been proven to offer better protection against droplets, aerosols and fluid penetration and which form a tight seal around the mouth and nose. Various types of respirators are used in healthcare settings, such as half-mask filtering facepiece respirators (FFRs) and powered air-purifying respirators (PAPRs). The most commonly used FFR is the N95 disposable respirator, which is tight fitting and has a 95% or above particle filtering efficiency for a median particle size of 0.3 µm. This review discusses respirators, their purpose, types, clinical efficiency and proper donning and doffing techniques.

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“…Wilkinson et al included the KC PFR95 (both regular and small sizes) and 3M 1870 in a large-scale fit-test study of healthcare workers (HCW). (37) Of the 2675 HCWs who tested the 3M 1870 60.9% passed the fit-test. The 3M 1870 was the best-fitting respirator for HCWs with a “triangular or heart-shaped face” having a passing rate of 99.4% (776/781 HCWs).…”

Section: Discussionmentioning

confidence: 98%

“…For subjects with a “round or oval” shaped face, the KC PFR95 small size was the best-fitting model with 162/163 HCWs passing. (37) McMahon found the 3M 1870 fit-test passing rate was 95.1% for men and 85.4% for women. (38) Lee et al found the 3M 1860 passing rate was 75%.…”

Section: Discussionmentioning

confidence: 99%

Development of an Advanced Respirator Fit-Test Headform

Bergman

Zhuang

Hanson³

et al. 2013

Journal of Occupational and Environmental Hygiene

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Improved respirator test headforms are needed to measure the fit of N95 filtering facepiece respirators (FFRs) for protection studies against viable airborne particles. A Static (i.e., non-moving, non-speaking) Advanced Headform (StAH) was developed for evaluating the fit of N95 FFRs. The StAH was developed based on the anthropometric dimensions of a digital headform reported by the National Institute for Occupational Safety and Health (NIOSH) and has a silicone polymer skin with defined local tissue thicknesses. Quantitative fit factor evaluations were performed on seven N95 FFR models of various sizes and designs. Donnings were performed with and without a pre-test leak checking method. For each method, four replicate FFR samples of each of the seven models were tested with two donnings per replicate, resulting in a total of 56 tests per donning method. Each fit factor evaluation was comprised of three 86-sec exercises: “Normal Breathing” (NB, 11.2 liters per min (lpm)), “Deep Breathing” (DB, 20.4 lpm), then NB again. A fit factor for each exercise and an overall test fit factor were obtained. Analysis of variance methods were used to identify statistical differences among fit factors (analyzed as logarithms) for different FFR models, exercises, and testing methods. For each FFR model and for each testing method, the NB and DB fit factor data were not significantly different (P > 0.05). Significant differences were seen in the overall exercise fit factor data for the two donning methods among all FFR models (pooled data) and in the overall exercise fit factor data for the two testing methods within certain models. Utilization of the leak checking method improved the rate of obtaining overall exercise fit factors ≥100. The FFR models, which are expected to achieve overall fit factors ≥ 100 on human subjects, achieved overall exercise fit factors ≥ 100 on the StAH. Further research is needed to evaluate the correlation of FFRs fitted on the StAH to FFRs fitted on people.

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Evaluation of a Large-Scale Quantitative Respirator-Fit Testing Program for Healthcare Workers: Survey Results

Cited by 56 publications

References 17 publications

Physiologic and fit factor profiles of N95 and P100 filtering facepiece respirators for use in hot, humid environments

Physiologic and fit factor profiles of N95 and P100 filtering facepiece respirators for use in hot, humid environments

Role of respirators in controlling the spread of novel coronavirus (COVID‐19) amongst dental healthcare providers: a review

Development of an Advanced Respirator Fit-Test Headform

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