| Content Provider | Springer Nature : BioMed Central |
|---|---|
| Author | Myatt, Theodore A Minegishi, Taeko Allen, Joseph G MacIntosh, David L |
| Abstract | Background Reducing exposure to environmental agents indoors shown to increase asthma symptoms or lead to asthma exacerbations is an important component of a strategy to manage asthma for individuals. Numerous investigations have demonstrated that portable air cleaning devices can reduce concentrations of asthma triggers in indoor air; however, their benefits for breathing problems have not always been reproducible. The potential exposure benefits of whole house high efficiency in-duct air cleaners for sensitive subpopulations have yet to be evaluated. Methods We used an indoor air quality modeling system (CONTAM) developed by NIST to examine peak and time-integrated concentrations of common asthma triggers present in indoor air over a year as a function of natural ventilation, portable air cleaners, and forced air ventilation equipped with conventional and high efficiency filtration systems. Emission rates for asthma triggers were based on experimental studies published in the scientific literature. Results Forced air systems with high efficiency filtration were found to provide the best control of asthma triggers: 30–55% lower cat allergen levels, 90–99% lower risk of respiratory infection through the inhalation route of exposure, 90–98% lower environmental tobacco smoke (ETS) levels, and 50–75% lower fungal spore levels than the other ventilation/filtration systems considered. These results indicate that the use of high efficiency in-duct air cleaners provide an effective means of controlling allergen levels not only in a single room, like a portable air cleaner, but the whole house. Conclusion These findings are useful for evaluating potential benefits of high efficiency in-duct filtration systems for controlling exposure to asthma triggers indoors and for the design of trials of environmental interventions intended to evaluate their utility in practice. |
| Related Links | https://ehjournal.biomedcentral.com/counter/pdf/10.1186/1476-069X-7-43.pdf |
| Ending Page | 14 |
| Page Count | 14 |
| Starting Page | 1 |
| File Format | HTM / HTML |
| DOI | 10.1186/1476-069X-7-43 |
| Journal | Environmental Health |
| Issue Number | 1 |
| Volume Number | 7 |
| Language | English |
| Publisher | BioMed Central |
| Publisher Date | 2008-08-06 |
| Access Restriction | Open |
| Subject Keyword | Occupational Medicine Industrial Medicine Public Health Environmental Health Environmental Tobacco Smoke Test Home Asthma Trigger Residential Energy Consumption Survey Ventilation Configuration Occupational Medicine/Industrial Medicine |
| Content Type | Text |
| Resource Type | Article |
| Subject | Health, Toxicology and Mutagenesis Public Health, Environmental and Occupational Health |
| Journal Impact Factor | 5.4/2023 |
| 5-Year Journal Impact Factor | 6.7/2023 |
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