JAMA Intern Med:N95口罩替代品的过滤效率研究

2020-08-12 MedSci原创 MedSci原创

研究认为,COVID-19大流行期间,面对N95口罩供应不足的情况,使用过期的完整N95口罩或对N95口罩进行二次消毒,可延长使用寿命,而其他替代品的过滤效果难以满足高风险医疗环境的要求

N95口罩是预防新冠肺炎传播的重要医疗物资,面对严重的疫情,人们不得不采用许多非标准方法,如使用过期口罩或对口罩进行二次消毒,以延长口罩的使用寿命。近日研究人员考察了COVID-19大流行期间使用N95口罩替代品的过滤效率(FFEs)。

研究人员于2020年4-6月间,根据职业安全与健康管理部门的适合性测试方案,对各种口罩的FFE进行评估。研究的主要终点为N95口罩替代品的过滤效率。

研究人员对29种不同类型的口罩替代品进行评估,发现弹性带完好的过期N95口罩和经过环氧乙烷和过氧化氢消毒的N95口罩,其FFE没有变化(>95%)。尺寸不合适的N95口罩的性能略有下降(FFE值90%-95%),其他方法均未能达到95%的FFE。美国疾病控制与预防中心授权使用的2种非NIOSH标准进口口罩,在本研究中均未达到95%的FFE,其滤过效率约为80%。外科手术口罩及面罩的过滤性能低于N95口罩,其中弹性耳环固定的口罩的效率最低(FFE为38.1%)。

研究认为,COVID-19大流行期间,面对N95口罩供应不足的情况,使用过期的完整N95口罩或对N95口罩进行二次消毒,可延长使用寿命,而其他替代品的过滤效果难以满足高风险医疗环境的要求。

原始出处:

Emily E. Sickbert-Bennett et al. Filtration Efficiency of Hospital Face Mask Alternatives Available for Use During the COVID-19 Pandemic. JAMA Intern Med. August 11, 2020.

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    2021-07-15 kcb069
  2. [GetPortalCommentsPageByObjectIdResponse(id=1887298, encodeId=a8c6188e2988e, content=<a href='/topic/show?id=dc6712465f4' target=_blank style='color:#2F92EE;'>#N95口罩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12465, encryptionId=dc6712465f4, topicName=N95口罩)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=87b1109, createdName=kcb069, createdTime=Thu Jul 15 01:42:15 CST 2021, time=2021-07-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1689243, encodeId=705f16892434f, content=<a href='/topic/show?id=3ef2124641b' target=_blank style='color:#2F92EE;'>#N95#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=12464, encryptionId=3ef2124641b, topicName=N95)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=845728772410, createdName=passed water, createdTime=Fri Apr 16 04:42:15 CST 2021, time=2021-04-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1307868, encodeId=7b79130e868f8, content=<a href='/topic/show?id=2be638263f4' target=_blank style='color:#2F92EE;'>#口罩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=38263, encryptionId=2be638263f4, topicName=口罩)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7f52347, createdName=soongzhihua, createdTime=Fri Aug 14 10:42:15 CST 2020, time=2020-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1610651, encodeId=01cd161065157, content=<a href='/topic/show?id=eb6b1145939' target=_blank style='color:#2F92EE;'>#Med#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=17, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=11459, encryptionId=eb6b1145939, topicName=Med)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=552a19396740, createdName=ms3994565386320060, createdTime=Fri Aug 14 10:42:15 CST 2020, time=2020-08-14, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1036220, encodeId=c7e71036220e0, content=顶刊就是顶刊,谢谢梅斯带来这么高水平的研究报道,我们科里同事经常看梅斯,分享梅斯上的信息, beContent=null, objectType=article, channel=null, level=null, likeNumber=38, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=旺医, createdTime=Wed Aug 12 22:42:15 CST 2020, time=2020-08-12, status=1, ipAttribution=)]
    2021-04-16 passed water
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    2020-08-12 旺医

    顶刊就是顶刊,谢谢梅斯带来这么高水平的研究报道,我们科里同事经常看梅斯,分享梅斯上的信息

    0

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