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Journal articles on the topic 'Respirator'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Bischoff, Werner E., JoLyn Turner, Gregory Russell, Maria Blevins, Engy Missaiel, and John Stehle. "How well do N95 respirators protect healthcare providers against aerosolized influenza virus?" Infection Control & Hospital Epidemiology 40, no. 2 (2018): 232–34. http://dx.doi.org/10.1017/ice.2018.326.

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AbstractN95 respirator masks are recommended for protection against respiratory viruses. Despite passing fit-testing 10% of N95 respirator users encountered breakthroughs with exposure to influenza virus compared to full protection provided by a powered air purifying respirator. The current recommendation of N95 respirators should be evaluated for endemic and emerging scenarios.

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Lam, Simon Ching, Joseph Kok Long Lee, Linda Yin King Lee, Ka Fai Wong, and Cathy Nga Yan Lee. "Respiratory Protection by Respirators: The Predictive Value of User Seal Check for the Fit Determination in Healthcare Settings." Infection Control & Hospital Epidemiology 32, no. 4 (2011): 402–3. http://dx.doi.org/10.1086/659151.

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The N95 respirator is one type that is recommended by the World Health Organization and the Centers for Disease Control and Prevention (CDC) to prevent inhalation of droplets that may act to transmit respiratory pathogens. However, the reliability of this respirator to prevent transmission is dependent on how well it is fitted to the wearer. For ill-fitting respirators, the average penetration by ambient aerosol was found to be 33%, compared with 4% for well-fitting respirators. Such penetration or leakage may be caused by the gap between the respirator and the wearer's face. Therefore, formal

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Fakherpour, Anahita, Mehdi Jahangiri, and Janis Jansz. "A systematic review of passing fit testing of the masks and respirators used during the COVID-19 pandemic: Part 1-quantitative fit test procedures." PLOS ONE 18, no. 10 (2023): e0293129. http://dx.doi.org/10.1371/journal.pone.0293129.

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Background During respiratory infection pandemics, masks and respirators are highly sought after, especially for frontline healthcare workers and patients carrying respiratory viruses. The objective of this study was to systematically review fit test pass rates and identify factors influencing the fitting characteristics. Methods Potentially relevant studies were identified using PubMed, Scopus, Web of Science, and Science Direct during the COVID-19 pandemic from February 5, 2020, to March 21, 2023. The search strategy using the following keywords was conducted: Quantitative Fit Test, Condensa

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Hines, Stella E., Clayton H. Brown, Marc Oliver, et al. "Cleaning and Disinfection Perceptions and Use Practices Among Elastomeric Respirator Users in Health care." Workplace Health & Safety 68, no. 12 (2020): 572–82. http://dx.doi.org/10.1177/2165079920938618.

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Background: Reusable elastomeric respirator use in health care may represent one solution to address N95 respirator shortages experienced during infectious disease outbreaks, but cleaning and disinfection requirements may limit their utility. Evidence of respirator cleaning and disinfection behaviors and practices by health care workers may inform guidance on reusable respirator use. Methods: Medical system elastomeric respirator users were surveyed about respirator cleaning and disinfection practices and perceptions via an electronic survey. Respondents were subsequently classified based on r

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Hines, Stella E., Joanna Gaitens, Nora M. Mueller, Diego Molina Ochoa, Eseosa Fernandes, and Melissa A. McDiarmid. "Respiratory Protection Perceptions among Malian Health Workers: Insights from the Health Belief Model." International Journal of Environmental Research and Public Health 19, no. 5 (2022): 3028. http://dx.doi.org/10.3390/ijerph19053028.

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Reusable respiratory protective devices called elastomeric respirators have demonstrated their effectiveness and acceptability in well-resourced healthcare settings. Using standard qualitative research methods, we explored the feasibility of elastomeric respirator use in low- and middle-income countries (LMIC). We conducted interviews and focus groups with a convenience sample of health workers at one clinical center in Mali. Participants were users of elastomeric and/or traditional N95 respirators, their supervisors, and program leaders. Interview transcripts of participants were analyzed usi

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Faisal, Haruyuki Dewi, and Agus Dwi Susanto. "Peran Masker/Respirator dalam Pencegahan Dampak Kesehatan Paru Akibat Polusi Udara." Jurnal Respirasi 3, no. 1 (2019): 18. http://dx.doi.org/10.20473/jr.v3-i.1.2017.18-25.

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Outdoor air pollution contributed harmful impact to public health. There are several respiratory disorders related to outdoor air pollution such as acute respiratory infection, lung cancer, asthma, chronic obstructive lung disease (COPD) and lung function disorder. Respirator is a personnel protective device which has role in the primary intervention step. Currently exist many types of respirators in industrial setting that have specific function to certain hazard exposure in work process. It is difficult to choose one type of respirator that can be implemented in population setting to protect

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Khumyrzakh, Bakhytbol, Yung-Chuan Cheng, Chuan-Yu Lai, Kai-Chih Chang, and Chun-Chieh Tseng. "Spreading a Durable Protective Layer of Quaternary Ammonium Agents on an N95 Respirator for Predecontamination of Airborne Mycobacterium tuberculosis and Viruses Using Mycobacterium smegmatis and Bacteriophage MS2 as Models." Indoor Air 2023 (November 22, 2023): 1–12. http://dx.doi.org/10.1155/2023/8484714.

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Tuberculosis (TB) and coronavirus disease 2019 (COVID-19), caused by Mycobacterium tuberculosis (MTB) and severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), respectively, are serious public health issues. N95 respirators are commonly used to protect people from infections in high-risk environments. Consequently, we used Mycobacterium smegmatis and bacteriophage MS2 as MTB and SARS-CoV-2 surrogates to evaluate the ability of a quaternary ammonium agent (QAA) coating on the surface of new N95 respirators to reduce the microbial burden upon aerosol exposure. Regarding the burden (105 C

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8

Lee, Sanghyun, Hongjung Kim, Taeho Lim, et al. "Simulated workplace protection factors for respirators with N95 or higher filters for health care providers in an emergency medical centre: A randomized crossover study." Hong Kong Journal of Emergency Medicine 24, no. 6 (2017): 282–89. http://dx.doi.org/10.1177/1024907917735088.

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Introduction: Health care providers in emergency medical centres often encounter infected sources during medical procedures; these sources can generate droplets. Wearing respirators could help to protect against infection risk. However, to the best of our knowledge, no previous study has reported the efficacy of N95 or higher respirators for health care providers in emergency medical centres. Methods: A randomized, crossover study of 26 health care providers was conducted to examine the protective performance of respirators. Quantitative fit tests with three types of respirators (cup type, fol

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Howard, Brittany E. "High-Risk Aerosol-Generating Procedures in COVID-19: Respiratory Protective Equipment Considerations." Otolaryngology–Head and Neck Surgery 163, no. 1 (2020): 98–103. http://dx.doi.org/10.1177/0194599820927335.

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The correct selection and utilization of respiratory personal protective equipment is of the utmost importance in the current COVID-19 pandemic. This is especially true for health care workers exposed to high-risk aerosol-generating procedures, including otolaryngologists, ophthalmologists, neurosurgeons, maxillofacial surgeons, and laparoscopic surgeons. This communication provides a review of approved forms of respiratory protection and compares their characteristics, including surgical masks, N95 respirator, elastomeric respirators, powered air-purifying respirators, and controlled air-puri

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10

McKay, Roy T. "Respirator and Respiratory Protection." Journal of Occupational & Environmental Medicine 39, no. 8 (1997): 791. http://dx.doi.org/10.1097/00043764-199708000-00023.

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11

Burton, Christopher, Briana Coles, Anil Adisesh, et al. "Performance and impact of disposable and reusable respirators for healthcare workers during pandemic respiratory disease: a rapid evidence review." Occupational and Environmental Medicine 78, no. 9 (2021): 679–90. http://dx.doi.org/10.1136/oemed-2020-107058.

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ObjectivesTo synthesise evidence concerning the range of filtering respirators suitable for patient care and guide the selection and use of different respirator types.DesignComparative analysis of international standards for respirators and rapid review of their performance and impact in healthcare.Data sourcesWebsites of international standards organisations, Medline and Embase, hand-searching of references and citations.Study selectionStudies of healthcare workers (including students) using disposable or reusable respirators with a range of designs. We examined respirator performance, clinic

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Aqueveque, Pablo, Macarena Díaz, Britam Gomez, et al. "Embedded Electronic Sensor for Monitoring of Breathing Activity, Fitting and Filter Clogging in Reusable Industrial Respirators." Biosensors 12, no. 11 (2022): 991. http://dx.doi.org/10.3390/bios12110991.

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Millions of workers are required to wear reusable respirators in several industries worldwide. Reusable respirators include filters that protect workers against harmful dust, smoke, gases, and vapors. These hazards may cause cancer, lung impairment, and diseases. Respiratory protection is prone to failure or misuse, such as wearing respirators with filters out of service life and employees wearing respirators loosely. Currently, there are no commercial systems capable of reliably alerting of misuse of respiratory protective equipment during the workday shifts or provide early information about

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Bazaluk, Oleg, Alim Ennan, Serhii Cheberiachko, et al. "Research on Regularities of Cyclic Air Motion through a Respirator Filter." Applied Sciences 11, no. 7 (2021): 3157. http://dx.doi.org/10.3390/app11073157.

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In this paper, a solution to the problem of the change in the pressure drop in a respirator filter during cyclic air motion is suggested since the current theory of filtering is based on steady-flow processes. The theoretical dependence of the pressure drop in the respirator filter on air flow rate is determined, which is represented by the harmonic law, which characterizes the human respiration process during physical work. For the calculation, a filter model was used, which is represented by a system of parallel isolated cylinders with a length equal to the total length of the filter fibres

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Crow, Sue. "The Lone Ranger Rides Again, This Time Followed by a Federal Posse." Infection Control & Hospital Epidemiology 15, no. 10 (1994): 673–76. http://dx.doi.org/10.1086/646831.

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AbstractThe Centers for Disease Control and Prevention proposed guidelines regarding the high-efficiency particulate air-filtered respirator have raised many questions that the healthcare worker has found difficult to answer. This product commentary addresses questions related to material that the respiratory protection program should include; provides information related to the physical exam before the use of the respirator; and explains the types of respirators. Cost issues also are discussed.

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Cheberiachko, Serhii, Olena Yavorska, Oleh Deriuhin, and Andrii Yavorskyi. "Evaluation of the probability of miners’ protection while using filtering respirators." E3S Web of Conferences 201 (2020): 01021. http://dx.doi.org/10.1051/e3sconf/202020101021.

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Objective of the research is to evaluate the probability of deterioration of the protection of miners’ respiratory organs while using filtering respirators in terms of coal mines under the coal mine conditions and to elaborate recommendations for the reduction of possible occupational disease risks. A Markovian process theory has been applied to solve the formulated problem. It has been determined that the probability of deterioration of the protection of a worker wearing a filtering respirator is up to 50%, which is stipulated by the lack of corresponding training as for the correct filtering

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Esperanza, Peón Ceballos. "Nursing performance in non-invasive mechanical ventilation." Nuberos científica VOLUMEN 6, no. 38 (2023): 15. http://dx.doi.org/10.58798/nc.2023.15.58.004.

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La Ventilación Mecánica Invasiva se define como recurso de soporte vital que ha contribuido decisivamente en mejorar la vida de los pacientes en estado crítico, sobre todo aquellos que sufren insuficiencia respiratoria aguda (IRA). Se hace a través de un respirador. Invasive Mechanical Ventilation is defined as a life support resource that has contributed decisively to improving the lives of critically ill patients, especially those suffering from acute respiratory failure (ARI). It is done through a respirator.

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17

Johnson, Barbara, Douglas R. Winters, Thomas R. Shreeve, and Christopher C. Coffey. "Respirator Filter Reuse Test Using the Laboratory Simulant Mycobacterium Tuberculosis (H37RA Strain)." Journal of the American Biological Safety Association 3, no. 3 (1998): 105–16. http://dx.doi.org/10.1177/109135059800300306.

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All respirators certified under Title 42, Code of Federal Regulations, Part 84, can be used by healthcare workers for protection against Mycobacterium tuberculosis (Mtb). Questions have been raised regarding the possibility of the respirator becoming contaminated with Mtb or other organisms due to reuse, handling, and storage in plastic bags. This study was conducted to: (1) determine whether, and for how long, avirulent Mtb (strain H37Ra) survives on respirator material, and (2) measure levels of contamination (assess contamination by environmental bacteria and fungi due to storage in airtigh

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18

Adhikari, Atin, Aniruddha Mitra, Abbas Rashidi, Imaobong Ekpo, Jacob Schwartz, and Jefferson Doehling. "Field Evaluation of N95 Filtering Facepiece Respirators on Construction Jobsites for Protection against Airborne Ultrafine Particles." International Journal of Environmental Research and Public Health 15, no. 9 (2018): 1958. http://dx.doi.org/10.3390/ijerph15091958.

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Exposure to high concentrations of airborne ultrafine particles in construction jobsites may play an important role in the adverse health effects among construction workers, therefore adequate respiratory protection is required. The performance of particulate respirators has never been evaluated in field conditions against ultrafine particles on construction jobsites. In this study, respiratory protection levels against ultrafine particles of different size ranges were assessed during three common construction related jobs using a manikin-based set-up at 85 L/min air flow rate. Two NanoScan SM

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Chuang, Tzu-Ying, Tania Thomas, Vickie Garrison, Jonathon Schuch, Benjamin Kozower, and Joshua Eby. "1160. Infrequency of Respirator Change Following Annual Respiratory Fit Testing at an Academic Medical Center." Open Forum Infectious Diseases 5, suppl_1 (2018): S349. http://dx.doi.org/10.1093/ofid/ofy210.993.

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Abstract Background The Occupational Safety and Health Administration (OSHA) of the Department of Labor requires that healthcare employers perform annual respiratory fit testing (RFT) for respiratory protection of employees with patient exposure. The annual cost of RFT in the United States is greater than $8 million and each fit test requires approximately 20 minutes. Due to the high resource expenditure for RFT, we sought to identify factors associated with changing respirators. Methods During annual RFT at the University of Virginia, employees complete a questionnaire about interval clinical

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20

Redmann, Rachel K., Brandon J. Beddingfield, Skye Spencer, et al. "A Miniaturized Electrostatic Precipitator Respirator Effectively Removes Ambient SARS-CoV-2 Bioaerosols." Viruses 14, no. 4 (2022): 765. http://dx.doi.org/10.3390/v14040765.

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The inhalation of ambient SARS-CoV-2-containing bioaerosols leads to infection and pandemic airborne transmission in susceptible populations. Filter-based respirators effectively reduce exposure but complicate normal respiration through breathing zone pressure differentials; therefore, they are impractical for long-term use. Objectives: We tested the comparative effectiveness of a prototyped miniaturized electrostatic precipitator (mEP) on a filter-based respirator (N95) via the removal of viral bioaerosols from a simulated, inspired air stream. Methods: Each respirator was tested within a 16

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Bertges, Nicole, Sachiyo Shearman, Satomi Imai, Jo Anne G. Balanay, and Sinan Sousan. "Examination of factors that impact mask or respirator purchase and usage during the COVID-19 pandemic." PLOS ONE 19, no. 9 (2024): e0308841. http://dx.doi.org/10.1371/journal.pone.0308841.

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Understanding the motivations and barriers populations face in respiratory protection during a pandemic is key to effective primary prevention. The goal of this study was to identify the impact of various motivational factors on individual choice of masks or respirators during the COVID-19 pandemic. The survey study included a sample of 619 participants between the ages of 18 to 75 years old and English speaking, who were asked about factors that affected their choice of masks or respirators between the months of April 2020 and May 2021. Participants showed a positive association between choic

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Radchuk, Dmytro, Ruslan Khoma, Olena Yavorska, Yuriy Cheberyachko, Oleh Mukha, and Dmytro Shoshyn. "Improving of the filtering respirator development process." Naukovyi visnyk Donetskoho natsionalnoho tekhnichnoho universytetu 1, no. 14 (2025): 166–84. https://doi.org/10.31474/2415-7902-2025-1-14-166-184.

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Purpose. To improve the process of filtering respirators developing. Methodology. To achieve the goal, the dialectical method was used to discuss the component stages of design, the induction method to form a holistic approach based on the identified stages of design, and the systemic method to assess risks during the development of respiratory personal protective equipment. Results. The process of designing universal filtering respirators has been improved, which consists of the well-known five stages: design, preparation, production, conformity assessment and post-production (disposal), each

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Chan, Jun Keat, Kah Hong Yep, Sarah Magarey, Zoe Keon-Cohen, and Matt Acheson. "Fit Testing Disposable P2/N95 Respirators during COVID-19 in Victoria, Australia: Fit Check Evaluation, Failure Rates, and a Survey of Healthcare Workers." COVID 1, no. 1 (2021): 83–96. http://dx.doi.org/10.3390/covid1010007.

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Quantitative fit testing was utilised to evaluate the Department of Health and Human Services in Victoria (DHHS) recommended fit check and determine pass/fail rates for self-selected P2/N95 respirators. Survey experience and training related to P2/N95 respirators were also obtained. This was an observational study at a specialist tertiary referral centre, Melbourne, Australia, between 29 May 2020 and 5 June 2020. The primary outcome was quantitative fit test pass/fail results, with fit check reported against fit test as a 2 × 2 contingency table. The secondary outcomes were the number of adjus

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Chu, Jacqueline, Omkar Ghenand, Joy Collins, et al. "Thinking green: modelling respirator reuse strategies to reduce cost and waste." BMJ Open 11, no. 7 (2021): e048687. http://dx.doi.org/10.1136/bmjopen-2021-048687.

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ObjectivesTo compare the impact of respirator extended use and reuse strategies with regard to cost and sustainability during the COVID-19 pandemic.DesignCost analysis.SettingUSA.ParticipantsAll healthcare workers within the USA.InterventionsNot applicable.Main outcome measuresA model was developed to estimate usage, costs and waste incurred by several respirator usage strategies over the first 6 months of the pandemic in the USA. This model assumed universal masking of all healthcare workers. Estimates were taken from the literature, government databases and commercially available data from a

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Qüdrət qızı Orucova, Elza, Lalə İslah qızı Rüstəmova, Adilə Novruz qızı Ələsgərova, Gülnarə Aydın qızı Kərimova, and Fəridə Hafiz qızı Heydərova. "To study of antiviral activity of artemicia L. etheric oil in experimental model." SCIENTIFIC WORK 75, no. 2 (2022): 133–38. http://dx.doi.org/10.36719/2663-4619/75/133-138.

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Kəskin respirator virus infeksiyalarında terapevtik məqsədlər üçün bitki mənşəli yeni dərman vasitələrinin aparılması eksperimental təbabətin əsas istiqamətlərindən biridir. Bu tədqiqatın məqsədi eksperimental modeldə Artemicia L. efir yağının antiviral fəaliyyətini öyrənməkdir. Bu məqsədlə immunxromatoqrafiya üsulu ilə kəskin respirator infeksiya şübhəsi olan 202 xəstənin burun və burun-udlağın yaxmalarında bəzi respirator viruslar aşkar edilib. Tədqiqatların nəticələri göstərir ki, 2018-2019-cu illərdə Bakı şəhərində kəskin respirator virus infeksiyalarının törədicilərinin etioloji strukturl

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Neupane, Bhanu Bhakta, and Basant Giri. "Review of materials and testing methods for virus filtering performance of face mask and respirator." PeerJ Materials Science 3 (October 7, 2021): e17. http://dx.doi.org/10.7717/peerj-matsci.17.

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Respiratory protection devices such as face masks and respirators minimize the transmission of infectious diseases by providing a physical barrier to respiratory virus particles. The level of protection from a face mask and respirator depends on the nature of filter material, the size of infectious particle, breathing and environmental conditions, facial seal, and user compliance. The ongoing COVID‒19 pandemic has resulted in the global shortage of surgical face mask and respirator. In such a situation, significant global populations have either reused the single‒use face mask and respirator o

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Cheberiachko, Ivan, Yuriy Cheberiachko, and Andrii Yavorskyi. "On the Problem of Filter Respirator Selection." Advanced Engineering Forum 25 (November 2017): 136–42. http://dx.doi.org/10.4028/www.scientific.net/aef.25.136.

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Requirements concerning the selection of filtering respirators according to ЕN 529:2006 European standard have been analyzed; the requirements have been compared with the national recommendations given in the corresponding ДНАОП 0.00-1.04-07 normative act on labour protection. It has been determined that the protective efficiency of the respiratory protective devices is characterized by three various parameters characterizing the coefficient of protection – two of them are determined at the working place. However, adequate selection of a filtering respirator is tested in terms of nominal coeff

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Reponen, Tiina A., Zheng Wang, Klaus Willeke, and Sergey A. Grinshpun. "Survival of Mycobacteria on N95 Personal Respirators." Infection Control & Hospital Epidemiology 20, no. 4 (1999): 237–41. http://dx.doi.org/10.1086/501618.

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AbstractObjectives:The overall aim of this study was to investigate the survival and possible growth of Mycobacterium tuberculosis simulant bacteria on respirator filters.Methods:Mycobacterium smegmatis was used as a biochemical simulant for M tuberculosis. Bacterial survival was tested on National Institute for Occupational Safety and Health-certified N95 respirators from three manufacturers. The first experiments simulated one-time respirator use and subsequent storage for 1 to 9 days under ideal conditions for the growth of mycobacteria: 37°C and 85% relative humidity. The bacteria were loa

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Schumacher, Jan, James Arlidge, Declan Dudley, Jennifer Van Ross, Francesca Garnham, and Kate Prior. "First responder communication in CBRN environments: FIRCOM-CBRN study." Emergency Medicine Journal 36, no. 8 (2019): 456–58. http://dx.doi.org/10.1136/emermed-2019-208413.

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IntroductionRecent terror attacks and assassinations involving highly toxic chemical weapons have stressed the importance of sufficient respiratory protection of medical first responders and receivers. As full-face respirators cause perceptual-motor impairment, they not only impair vision but also significantly reduce speech intelligibility. The recent introduction of electronic voice projection units (VPUs), attached to a respirator, may improve communication while wearing personal respiratory protection.ObjectiveTo determine the influence of currently used respirators and VPUs on medical com

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Caggiari, Silvia, Bethany Keenan, Dan L. Bader, et al. "A combined imaging, deformation and registration methodology for predicting respirator fitting." PLOS ONE 17, no. 11 (2022): e0277570. http://dx.doi.org/10.1371/journal.pone.0277570.

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N95/FFP3 respirators have been critical to protect healthcare workers and their patients from the transmission of COVID-19. However, these respirators are characterised by a limited range of size and geometry, which are often associated with fitting issues in particular sub-groups of gender and ethnicities. This study describes a novel methodology which combines magnetic resonance imaging (MRI) of a cohort of individuals (n = 8), with and without a respirator in-situ, and 3D registration algorithm which predicted the goodness of fit of the respirator. Sensitivity analysis was used to optimise

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Yaman Kula, Aslı, Sultan Meşe, Vildan Güzel, et al. "Effect of surgical mask and N95 respirator mask use on cerebrovascular reactivity." Ideggyógyászati szemle 77, no. 7-8 (2024): 263–71. http://dx.doi.org/10.18071/isz.77.0263.

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Background and purpose – Face masks are crucial parts of personal protective equipment (PPE) to reduce the risk of respiratory infections. The COVID-19 outbreak has increased healthcare workers’ use of face masks. This study aimed to evaluate changes in cerebrovascular response among healthcare workers using surgical and N95 respirator masks. Methods – 90 healthcare workers: 30 wearing surgical masks, 30 wearing N95 respirators, and 30 without masks were included. After two-hour of face mask use, the baseline mean flow velocity (MFV) and the mean breath-holding index (BHI) of the bilateral mid

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Paointr, Sirawit, Arpunna Suriyasathaporn, Kunkongrat Chitphiankha, Supisara Prompila, and Kampanat Wangsan. "P-072 ENHANCING N95 RESPIRATOR PROFICIENCY AMONG THAI MEDICAL STUDENTS: AN EXPERIMENTAL STUDY." Occupational Medicine 74, Supplement_1 (2024): 0. http://dx.doi.org/10.1093/occmed/kqae023.0541.

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Abstract Introduction Medical students face risks from biological hazards, particularly airborne pathogens. While N95 respirators are generally provided, a Respiratory Protection Program (RPP) is not commonly implemented for medical students in Thailand. This study aims to assess the N95 respirator-wearing proficiency of clinical-year Thai medical students before and after RPP training. Method In 2023, an experimental study was conducted among Thai clinical medical students (years 4 to 6). Data on participants’ characteristics, including sex, height, weight, history of facial surgery, braces,

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Lee, Shu-An, Sergey A. Grinshpun, and Tiina Reponen. "Respiratory Performance Offered by N95 Respirators and Surgical Masks: Human Subject Evaluation with NaCl Aerosol Representing Bacterial and Viral Particle Size Range." Annals of Occupational Hygiene 52, no. 3 (2008): 177–85. http://dx.doi.org/10.1093/annhyg/men005.

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Abstract Objectives: This study aimed at determining the protection factors (PFs) provided by N95 filtering facepiece respirators and surgical masks against particles representing bacterial and viral size ranges (aerodynamic size: 0.04–1.3 μm). Methods: The protection levels of N95 filtering facepiece respirators (four models) and surgical masks (three models) were investigated while they were donned by 12 subjects performing the OSHA (US Occupational Safety and Health Administration) fit-testing exercises in a test chamber. Results: About 29% of N95 respirators and ∼100% of surgical masks had

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Chen, Yumiao, Jianping Wang, and Zhongliang Yang. "The human factors/ergonomics studies for respirators: a review and future work." International Journal of Clothing Science and Technology 27, no. 5 (2015): 652–76. http://dx.doi.org/10.1108/ijcst-06-2014-0077.

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Purpose – The purpose of this paper is to provide an overview of the human factors/ergonomics (HFE) studies for respirator. Design/methodology/approach – This review paper describes and discusses the various factors and methodologies of HFE, for the purpose of better considering human factors, used in respirator studies and further human-centered product development. Findings – Many attempts have been made to study human factors for respirators mainly including fit, human performance, comfort, and mood. Physical, psychological, and physiological indices of people are extremely valuable to HFE

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Schneider, Celine Josianne, Christian Peter Both, Daniel Fries, et al. "The in-vitro performance of a modern portable respirator in different lung models and as an alternative intensive care respirator." European Journal of Anaesthesiology Intensive Care 4, no. 2 (2025): e0069. https://doi.org/10.1097/ea9.0000000000000069.

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BACKGROUND Transporting ventilated patients safely and without loss of efficacy is a challenge. Portable ventilators are generally used to transport critically ill patients, but their performance is often limited. OBJECTIVE This study aimed to compare the in-vitro performance of a modern portable respirator with a modern intensive care respirator for different lung settings. DESIGN An in-vitro testing of a portable and an intensive care respirator. SETTINGS Anaesthesia Department at the University Children's Hospital Zurich. MAIN OUTCOME MEASURES The portable respirator Hamilton T1 was compare

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Tretiakova, Larisa, Yurii Cheberyachko, Olena Sharovatova, et al. "THE INFLUENCE OF HEAD STRAP ELASTICITY ON THE PROTECTIVE PROPERTIES OF FILTERING FACEPIECE RESPIRATORS." Rudarsko-geološko-naftni zbornik 39, no. 1 (2024): 131–40. http://dx.doi.org/10.17794/rgn.2024.1.11.

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The level of occupational respiratory diseases among workers in the mining, machine-building and metallurgical industries remains high. The most common occupational respiratory disease is pneumoconiosis, which is the result of the long-term inhalation of dust. It is possible to minimize the impact of dust on the workers and eliminate such diseases in the future due to the use of filtering mask respirators designed to reduce dust infiltration into the space under the mask. For this purpose, the choice of the type of elastic bands of filtering mask respirators has been substantiated by the geome

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Yuen, John G., Amy C. Marshilok, Peter Todd Benziger, et al. "Dry heat sterilization as a method to recycle N95 respirator masks: The importance of fit." PLOS ONE 17, no. 1 (2022): e0257963. http://dx.doi.org/10.1371/journal.pone.0257963.

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In times of crisis, including the current COVID-19 pandemic, the supply chain of filtering facepiece respirators, such as N95 respirators, are disrupted. To combat shortages of N95 respirators, many institutions were forced to decontaminate and reuse respirators. While several reports have evaluated the impact on filtration as a measurement of preservation of respirator function after decontamination, the equally important fact of maintaining proper fit to the users’ face has been understudied. In the current study, we demonstrate the complete inactivation of SARS-CoV-2 and preservation of fit

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Lim, Taeho, Sanghyun Lee, Jaehoon Oh, et al. "Endotracheal Intubation Using a Direct Laryngoscope and the Protective Performances of Respirators: A Randomized Trial." BioMed Research International 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/7565706.

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Purpose. Emergency physicians are at risk for infection during invasive procedures, and the respirators can reduce this risk. This study aimed to determine whether endotracheal intubation using direct laryngoscopes affected protection performances of respirators. Methods. A randomized crossover study of 24 emergency physicians was performed. We performed quantitative fit tests using respirators (cup type, fold type without a valve, and fold type with a valve) before and during intubation. The primary outcome was respirators’ fit factors (FF), and secondary outcomes were acceptable protection (

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Grinshpun, Sergey, Michael Yermakov, and Xinyi Niu. "328 Evaluation of a novel respirator fit testing apparatus (Sibata’s MT-11D): pilot study." Annals of Work Exposures and Health 68, Supplement_1 (2024): 1. http://dx.doi.org/10.1093/annweh/wxae035.129.

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Abstract Performance of a respiratory protective device largely depends on how well this device fits the wearer. Therefore, quantitative fit testing of particulate respirators is very important for achieving the intended protection level. Millions of fit tests are conducted by workers every year using a US OSHA-accepted standard protocol and a PortaCount instrument (TSI Inc, Shoreview, MN, USA) which measures a respirator fit factor. Several alternative fit testing instruments have been recently developed. Among them is an MT-11D (Sibata Scientific Technology Ltd, Tokyo, Japan), The novel inst

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Selmani, Abdelouahed, Bachir Benhala, Abi Soufiane, et al. "A portable artificial respirator with remote managing features." E3S Web of Conferences 469 (2023): 00100. http://dx.doi.org/10.1051/e3sconf/202346900100.

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COVID-19 is a disease that particularly attacks the respiratory system. As the situation worsens, the lungs function less effectively, requiring artificial respiration support to maintain adequate oxygen levels. Moreover, the remote supervision of the patient's conditions and remote control of the parameters of a portable breathing apparatus should help decongest hospitals. Such a concept will help healthcare professionals save considerable time by avoiding round trips among patients who do not represent acute respiratory failure. In this work, we describe the basic concepts of telemonitoring

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Patel, B., J. C. Hardman, W. Yang, et al. "Reusable respirators as personal protective equipment during ENT surgery." Journal of Laryngology & Otology 134, no. 8 (2020): 732–34. http://dx.doi.org/10.1017/s0022215120001346.

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AbstractBackgroundRobust personal protective equipment is essential in preventing the transmission of coronavirus disease 2019 to head and neck surgeons who are routinely involved in aerosol generating procedures.ObjectiveThis paper describes the collective experience, across 3 institutes, of using a reusable half-face respirator in 72 head and neck surgery cases.MethodCost analysis was performed to demonstrate the financial implications of using a reusable respirator compared to single-use filtering facepiece code 3 masks.ConclusionThe reusable respirator is a cost-effective alternative to di

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Lee, M. C., S. Takaya, R. Long, and A. M. Joffe. "Respirator-Fit Testing: Does It Ensure the Protection of Healthcare Workers Against Respirable Particles Carrying Pathogens?" Infection Control & Hospital Epidemiology 29, no. 12 (2008): 1149–56. http://dx.doi.org/10.1086/591860.

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Objective.Respiratory protection programs, including fit testing of respirators, have been inconsistently implemented; evidence of their long-term efficacy is lacking. We undertook a study to determine the short- and long-term efficacy of training for fit testing of N95 respirators in both untrained and trained healthcare workers (HCWs).Design.Prospective observational cohort study.Methods.A group of at-risk, consenting HCWs not previously fit-tested for a respirator were provided with a standard fit-test protocol. Participants were evaluated after each of 3 phases, and 3 and 14 months afterwa

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Chiumello, Davide, and Massimo Cressoni. "Respirator management of sepsis-related respiratory failure." Current Infectious Disease Reports 11, no. 5 (2009): 365–71. http://dx.doi.org/10.1007/s11908-009-0052-0.

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Schumm, Max A., Joseph E. Hadaya, Nisha Mody, Bethany A. Myers, and Melinda Maggard-Gibbons. "Filtering Facepiece Respirator (N95 Respirator) Reprocessing." JAMA 325, no. 13 (2021): 1296. http://dx.doi.org/10.1001/jama.2021.2531.

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Allison, Carrick, Mike Tennant, Peter Xiang, Jennifer Stephens, Oliver Ball, and Niall Wilton. "Navigating the shifting sands of filtering facepiece respirator provision during the COVID-19 pandemic: a system response for maximising staff safety." BMJ Open Quality 10, no. 3 (2021): e001163. http://dx.doi.org/10.1136/bmjoq-2020-001163.

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IntroductionPersonal protective equipment is essential to protect health workers and patients and to ensure confidence when dealing with aerosolised disease transmission. We describe the process for ensuring adequate filtering facepiece respirator (FFR) qualitative fit testing at a local level during the COVID-19 pandemic.MethodsCascaded training is described, which allowed rapid spreading of the testing process, with supervision allowing quality assurance throughout. Testing consisted of subjective ‘fit checking’, checking for leaks, followed by qualitative hood testing.ResultsThe original re

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Farabi, Maududi, and Mila Tejamaya. "Respiratory Protection Programs (RPP) Implementation at Production Unit of A Tin Smelter at Bangka Belitung Islands Province." Jurnal Ilmu Kesehatan Masyarakat 11, no. 3 (2020): 248–63. http://dx.doi.org/10.26553/jikm.2020.11.3.248-263.

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The fume generated from the reaction of flux and molten tin produces tin compounds in the atmosphere which potentially lead to stanosis or also known as tin pneumoconiosis after chronic inhalation and prolonged exposure in the workplaces e.g. in smelter industries. The risk can be minimized by implementing Respiratory Protection Program (RPP). This study aimed to evaluate the implementation of RPP at one smelter industries in Bangka Belitung Province. This is a evaluation study that qualitatively evaluate the implementation of RPP. eigth RPP elements from National safety Council (NSC) Australi

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Cadnum, Jennifer, Basya Pearlmutter, Daniel Li, et al. "Evaluation of 2 Ultraviolet-C Light Boxes for Decontamination of N95 Respirators." Pathogens and Immunity 6, no. 1 (2021): 104–15. http://dx.doi.org/10.20411/pai.v6i1.432.

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Background: Ultraviolet-C (UV-C) light devices are effective in reducing contamination on N95 filtering facepiece respirators. However, limited information is available on whether UV-C devices meet the Food and Drug Administration’s (FDA) microbiological requirements for Emergency Use Authorization (EUA) for respirator bioburden reduction. Methods: We tested the ability of 2 UV-C light boxes to achieve the 3-log10 microorganism reductions required for EUA for reuse by single users. Whole 3M 1860 or Moldex 1513 respirators were inoculated on the exterior facepiece, interior facepiece, and inter

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Mitra, Aniruddha, Atin Adhikari, Clinton Martin, Gracia Dardano, Pascal Wagemaker, and Caleb Adeoye. "Evaluation of a Filtering Facepiece Respirator and a Pleated Particulate Respirator in Filtering Ultrafine Particles and Submicron Particles in Welding and Asphalt Plant Work Environments." International Journal of Environmental Research and Public Health 18, no. 12 (2021): 6437. http://dx.doi.org/10.3390/ijerph18126437.

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Manufacturing sites, such as welding, casting, and asphalt production (fumes), generate vast numbers of ultrafine particles of <0.1 µm in size and submicron particles close to the ultrafine range (0.1–0.5 µm). Although cumulative masses of these particles are negligible in comparison to the larger particles, the health effects are more severe due to the higher penetration in the human lower respiratory tract, other body parts crossing the respiratory epithelial layers, and the larger surface area. This research investigates the effectiveness of two common commercially available N95 filterin

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Bazaluk, Oleg, Serhii Cheberiachko, Yurii Cheberiachko, et al. "Development of a Dust Respirator by Improving the Half Mask Frame Design." International Journal of Environmental Research and Public Health 18, no. 10 (2021): 5482. http://dx.doi.org/10.3390/ijerph18105482.

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Protective efficiency of filtering dust respirators depends on the properties of filter materials from which filters are made and the structure of a half mask frame, which influences how tightly the respirator fits the face. The conducted studies on the “Lepestok 40” dust respirator revealed a large air leakage through the gaps occurring along the obturation strip. Therefore, the purpose of the study is to develop a dust respirator to provide high level of protection and usability by improving the half mask frame design. A scheme for designing a dust respirator: analysis of operating condition

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Gilgoff, Irene S., Donna M. Barras, Michelle Sellers Jones, and Hazel V. Adkins. "Neck Breathing: A Form of Voluntary Respiration for the Spine-Injured Ventilator-Dependent Quadriplegic Child." Pediatrics 82, no. 5 (1988): 741–45. http://dx.doi.org/10.1542/peds.82.5.741.

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Children with respirator-dependent quadriplegia because of C-2 spinal cord injuries are now surviving the acute stages of their injury. The major cause of mortality and morbidity in the chronic stage is due to respiratory complications. Surveillance, 24 h/d, is the best way to prevent accidental disconnection of respirator equipment from the patient and its inherent catastrophic consequences. The constant risk of disconnection adds tension to the home environment and takes away from the patient any degree of independence or privacy. Because of this, an alternative method of respiration using n

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