Comparison of droplet spread in standard and laminar flow operating theatres: SPRAY study group
نویسندگان
چکیده
BackgroundReducing COVID-19 transmission relies on controlling droplet and aerosol spread. Fluorescein staining reveals microscopic droplets.AimTo compare the spread in non-laminar laminar air flow operating theatres.MethodsA ‘cough-generator’ was fixed to a theatre trolley at 45°. Fluorescein-stained ‘secretions’ were projected series of calibrated targets. These photographed under UV light ‘source detection’ software measured splatter size distance.FindingsThe smallest detected ∼120 μm largest ∼24,000 μm. An average 25,862 spots theatre, compared with 11,430 (56% reduction). The mainly affected smaller droplets (<1000 μm). surface area covered was: 6% 50 cm, 1% 2 m, 0.5% 3 m flow; 3%, 0.5%, 0.2% flow, respectively.ConclusionAccurate mapping clinical environments is possible using fluorescein image analysis. but had limited effect larger our ‘aerosol-generating procedure’ cough model. Our results indicate that requires similar post-surgery cleaning non-laminar, staff should consider full personal protective equipment for medium- high-risk patients. Reducing droplets. To theatres. A distance. respectively. Accurate
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Ensuring cleanliness in operating theatres.
High cleanliness of a hospital environment is necessary to ensure safe working conditions for the medical staff, a correct process of hospitalization and to protect hospital visitors, an aspect rarely mentioned. A supply of air cleaned in highly-effective air filters to hospital wards with air conditioning systems and exhaust of infected air will help in maintaining the required standards of cl...
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ژورنال
عنوان ژورنال: Journal of Hospital Infection
سال: 2021
ISSN: ['0195-6701', '1532-2939']
DOI: https://doi.org/10.1016/j.jhin.2021.01.026