B95: A new respirator for health care personnel

Gosch, Megan; Shaffer, Ronald E.; Eagan, Aaron; Roberge, Raymond J.; Davey, Victoria J.; Radonovich, Lewis J.

doi:10.1016/j.ajic.2013.03.293

Cited by 60 publications

(86 citation statements)

References 30 publications

(28 reference statements)

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“…Data for the current study were drawn from subjects in two separate Project BREATHE [11] reports (investigations a (not published) and b [12]) totaling 67 individuals. Investigation a subject demographic mean values (SD) for men (n = 12) were age 22.6 years (2.7), height 180.8 cm (7.9), weight 84.1 kg (16.5) and Body Mass Index (BMI) 25.7 kg/m 2 (4.8), and for women (n = 9) were age 23.7 years (3.3), height 166.4 cm (4.0), weight 65.6 kg (6.5) and BMI 23.7 kg/m 2 (2.6).…”

Section: Methodsmentioning

confidence: 99%

“…The N95 class of FFR (N95 FFR) is the most commonly used respirator in U.S. healthcare [9], but limited scientific data is available about its impact on TMT [10]. This investigation is part of the National Institute for Occupational Safety and Health’s (NIOSH) Project BREATHE (Better Respiratory Equipment using Advanced Technologies for Healthcare Employees), which is addressing respiratory protection needs of healthcare workers [11] and some of the results of which have previously been published [12, 13]. The current study was undertaken to assess the impact of wearing N95 FFRs on infrared TMT measurements.…”

Section: Introductionmentioning

confidence: 99%

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Effect of wearing an N95 respirator on infrared tympanic membrane temperature measurements

Kim

Roberge

Powell

2014

J Clin Monit Comput

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To determine the impact of wearing an N95 filtering facepiece respirator (N95 FFR) on tympanic temperature measurements. TMT measurements, with and without wearing an N95 filtering facepiece respirator (N95 FFR) were obtained at the onset and termination of 1 h of treadmill exercise in 21 subjects, and at staggered time intervals (0, 20, 40, 60 min) during combined sedentary activity and exercise of another 46 subjects, to determine any effect on TMT. A total of 877 TMT measurements were obtained that demonstrated a mean TMT increase of 0.05 °C in the first study group (p = 0.04) and a 0.19 °C decrease in the second study group (p < 0.001) with the wearing of an N95 FFR, both of which were lower than controls. Wearing an N95 FFR for 1 h, at different levels of activity, results in significantly lower TMT values than not wearing an N95 FFR, but the magnitude of the changes would likely have minimal clinical significance.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of wearing an N95 respirator on infrared tympanic membrane temperature measurements

Kim

Roberge

Powell

2014

J Clin Monit Comput

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“…Project BREATHE seeks to develop respirator test methods, respirator standards for a “B95” 1 respirator class, and invent novel design features, which together will lead to commercial products that are more comfortable and useable for HCWs (18) . Although a priority within Project BREATHE, the state of test methods for occupational interference (which includes SI) was recently deemed not practical for inclusion in a draft B95 standard (19) .…”

Section: Introductionmentioning

confidence: 99%

Speech intelligibility assessment of protective facemasks and air-purifying respirators

Palmiero

Symons²,

Morgan³

et al. 2016

Journal of Occupational and Environmental Hygiene

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102

104

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Speech Intelligibility (SI) is the perceived quality of sound transmission. In healthcare settings, the ability to communicate clearly with coworkers, patients, etc. is crucial to quality patient care and safety. The objectives of this study were to 1) assess the suitability of the Speech Transmission Index (STI) methods for testing reusable and disposable facial and respiratory personal protective equipment (protective facemasks [PF], N95 filtering facepiece respirators [N95 FFR], and elastomeric half-mask air-purifying respirators [EAPR]) commonly worn by healthcare workers, 2) quantify STI levels of these devices, and 3) contribute to the scientific body of knowledge in the area of SI. SI was assessed using the STI under two experimental conditions: 1) a modified version of the National Fire Protection Association 1981 Supplementary Voice Communications System Performance Test at a Signal to Noise Ratio (SNR) of −15 (66 dBA) and 2) STI measurements utilizing a range of modified pink noise levels (52.5 dBA (−2 SNR) − 72.5 dBA (+7 SNR)) in 5.0 dBA increments. The PF models (Kimberly Clark 49214 and 3M 1818) had the least effect on SI interference, typically deviating from the STI baseline (no-mask condition) by 3% and 4% STI, respectively. The N95FFR (3M 1870, 3M 1860) had more effect on SI interference, typically differing from baseline by 13% and 17%, respectively for models tested. The EAPR models (Scott Xcel and North 5500) had the most significant impact on SI, differing from baseline by 42% for models tested. This data offers insight into the performance of these apparatus with respect to STI and may serve as a reference point for future respirator design considerations, standards development, testing and certification activities.

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“…Part of that effort includes development of the B95 standard, which would include testing for comfort. 38 The development of standardized test methods assessing comfort and usability will likely spur additional research in this area, leading to increased publications for future trend analysis.…”

Section: Discussionmentioning

confidence: 99%

Selecting models for a respiratory protection program: What can we learn from the scientific literature?

Shaffer

Janssen

2015

American Journal of Infection Control

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Background An unbiased source of comparable respirator performance data would be helpful in setting up a hospital respiratory protection program. Methods The scientific literature was examined to assess the extent to which performance data (respirator fit, comfort and usability) from N95 filtering facepiece respirator (FFR) models are available to assist with FFR model selection and procurement decisions. Results Ten studies were identified that met the search criteria for fit, whereas 5 studies met the criteria for comfort and usability. Conclusion Analysis of these studies indicated that it is difficult to directly use the scientific literature to inform the FFR selection process because of differences in study populations, methodologies, and other factors. Although there does not appear to be a single best fitting FFR, studies demonstrate that fit testing programs can be designed to successfully fit nearly all workers with existing products. Comfort and usability are difficult to quantify. Among the studies found, no significant differences were noted.

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B95: A new respirator for health care personnel

Cited by 60 publications

References 30 publications

Effect of wearing an N95 respirator on infrared tympanic membrane temperature measurements

Effect of wearing an N95 respirator on infrared tympanic membrane temperature measurements

Speech intelligibility assessment of protective facemasks and air-purifying respirators

Selecting models for a respiratory protection program: What can we learn from the scientific literature?

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