Department Anaesthesia, Brighton and Sussex University Hospitals NHS Trust, Brighton, UK; Department of Microbiology and Infection, Brighton and Sussex University Hospitals NHS Trust, Sussex, Brighton, UK.
Department Anaesthesia, Brighton and Sussex University Hospitals NHS Trust, Brighton, UK.
Am J Infect Control. 2021 Jun;49(6):707-712. doi: 10.1016/j.ajic.2021.02.006. Epub 2021 Feb 13.
Powered air purifying respirators (PAPR) are an option for healthcare workers requiring respiratory protection during the current COVID-19 pandemic; they are shared between multiple people. PAPR hoods are intended for multiple uses by a single user and may pose an infection risk between wearers.
Internal components of PAPR hoods and corrugated air supply hoses were swabbed for evidence of bacterial, fungal, common respiratory viruses and severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) contamination.
Twenty-five PAPR hoods were swabbed; 10 (40%) returned positive results. Bacterial growth was detected on six PAPR; five of the PAPR tested positive for fungal growth; all tested negative for SARS-CoV-2 and common respiratory viruses.
Bacteria and fungi can remain on internal components of PAPR hoods and air supply hoses despite following recommended disinfection procedures. PAPR hoods have the potential to act as fomites, cross-infecting wearers, and patients. Current guidelines for disinfecting PAPR hoods may not be effective for use in high risk healthcare environments.
在当前的 COVID-19 大流行期间，动力送风式呼吸防护器（PAPR）是医疗工作者需要呼吸保护时的一种选择；它们在多人之间共享。PAPR 头罩旨在供单个用户多次使用，并且在使用者之间可能存在感染风险。
对 PAPR 头罩和波纹空气供应软管的内部部件进行拭子采样，以检测细菌、真菌、常见呼吸道病毒和严重急性呼吸综合征冠状病毒 2（SARS-CoV-2）污染的证据。
共拭子采样了 25 个 PAPR 头罩，其中 10 个（40%）呈阳性结果。六个 PAPR 上检测到细菌生长；五个 PAPR 检测到真菌生长；所有 PAPR 均未检测到 SARS-CoV-2 和常见呼吸道病毒。
尽管遵循了推荐的消毒程序，但 PAPR 头罩和空气供应软管的内部部件仍可能残留细菌和真菌。PAPR 头罩有可能成为传播媒介，交叉感染使用者和患者。目前用于消毒 PAPR 头罩的指南在高风险医疗环境中可能无效。
