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  • Title: Evaluating and contextualizing the efficacy of portable HEPA filtration units in small exam rooms.
    Author: Pirkle S, Bozarth S, Robinson N, Hester W, Wagner L, Broome S, Allen K, Mannepalli S.
    Journal: Am J Infect Control; 2021 Dec; 49(12):1506-1510. PubMed ID: 34390799.
    Abstract:
    BACKGROUND: Ambulatory clinics attend to COVID-19 patients, often in spaces with less than ideal ventilation. Testing and treatments can often include aerosol-generating procedures. Portable high efficiency particulate air (HEPA) filtration units have been used to remove airborne contaminants in these areas. METHODS: A particle counter was used to evaluate the effectiveness of portable HEPA filtration units when a proxy airborne contaminant (powder) was actuated into the air. The Center for Disease Control and Prevention's (CDC) Airborne Contaminant Removal table served as a basis for initial particle readings at 6 minutes. RESULTS: Percent decrease was calculated post powder actuation at the 6-minute and 12-minute mark. There was a statistically significant decrease in smaller particles at the 6-minute and 12-minute mark when the HEPA filtration units were used. CONCLUSION: As an adjunct infection control intervention, portable HEPA filtration units can make outpatient exam rooms safer for patients and staff by decreasing cumulative airborne particles.
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