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首页> 外文期刊>Journal of Thoracic Disease >New applications of a portable isolation hood for use in several settings and as a clean hood
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New applications of a portable isolation hood for use in several settings and as a clean hood

机译：用于多个设置和清洁罩的便携式隔离罩的新应用

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Background: We previously reported that we developed a compact and portable isolation hood that covers the top half of a patient sitting or lying in bed. The negative pressure inside the hood is generated by a fan-filter-unit (FFU) through which infectious aerosols from a patient are filtered. The outside area is kept clean which decreases the risk of nosocomial infections in hospital wards. We tried new applications of the hood. Methods: The negative pressure hood was newly applied in an intensive care unit (ICU) as a place where a staff performs the practice of suctioning that generates much aerosol from the patient, as well as a waiting space for patients. Furthermore, the possibility that the hood can be converted to a positive pressure hood as a clean hood by switching the airflow direction of FFU was assessed. The cleaning efficacy of the inside of the hood was tested using an aerosolized cultured influenza virus tracer and an optimal airflow rate was determined according to the test results. Results: The hood, named Barrihood, was found to be competent to be used (I) for tracheal suctioning in ICU, (II) as a waiting space for a child in a nursery who suddenly showed symptoms of the disease and waiting to be picked-up by the guardian, and (III) as a waiting space in a special outpatient clinic in a hospital for COVID-19 suspected cases to prevent dissemination of airborne pathogens. The positive pressure hood was also competent in keeping clean air quality that meets the standard class 100 of NASA’s bio-clean room category. Conclusions: The proposed new applications will broaden the range of the hood’s usage. The isolation hood could be useful in many settings to protect people outside the hood from a patient inside, or to protect an individual inside from air particles outside the hood, such as airborne pathogens, allergens, or hazardous particulate matter like PM2.5.
机译：背景：我们之前报道过，我们开发了一种紧凑型便携式隔离罩，覆盖患者的上半部分或躺在床上。引擎盖内的负压是由风扇过滤器单元（FFU）产生的，通过患者的传染性气溶胶过滤。外部区域保持清洁，这降低了医院病房中医院感染的风险。我们尝试了引擎盖的新应用。方法：将负压罩新应用于重症监护室（ICU），作为工作人员对从患者产生多种气溶胶的制作的行为的地方，以及患者的等待空间。此外，通过切换FFU的气流方向，可以通过切换FFU的气流方向作为清洁罩转换为正压罩的可能性。使用雾化培养的流感病毒示踪剂测试罩内部的清洁效果，并根据测试结果确定最佳气流速率。结果：发现引擎盖是有能力的（i）在ICU中使用（i）的用途（i），（ii）作为幼儿园中儿童的等候空间，他们突然出现疾病的症状并等待被挑选由监护人，（iii）作为Covid-19疑似病例的医院特殊门诊诊所的等候空间，以防止传播空气传播病原体。积极的压罩也称为保持清洁空气质量，满足美国宇航局的标准100级的美国宇航局的生物洁净室类别。结论：提出的新申请将扩大引擎盖的使用范围。隔离罩可以在许多设置中有用，以保护从内部的患者外面的罩外面的人，或保护在引擎盖外的空气颗粒内部的个体，例如空气传播的病原体，过敏原或危险颗粒物如pm2.5。

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