The effect of subject characteristics and respirator features on respirator fit
The effect of subject characteristics and respirator features on respirator fit
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DOI：
10.1080/15459620500391668
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发表时间：
2005-12-01
影响因子：
2
通讯作者：
Ann, RB
中科院分区：
文献类型：
--
作者：
Zhuang, ZQ;Coffey, CC;Ann, RB
为筛选不适合佩戴的N95过滤面罩，对18种NIOSH认证的N95过滤面罩进行了模拟工作场所防护系数（SWPF）测试，比较了5种适合性测试方法。本配对研究的目的是调查受试者特征（性别和面部尺寸）和呼吸器特征对呼吸器贴合性的影响。所研究的呼吸器特征是设计风格（折叠式和杯式）和可用的尺寸数量（一种尺寸适合所有人，两种尺寸和三种尺寸）。三十三名受试者参加了本研究。每个测量12面尺寸使用传统的卡尺和磁带。从该组中，25名面部尺寸类别为I至10的受试者测试了每种呼吸器。SWPF测试方案需要使用PortaCount Plus来确定基于总渗透（面部密封泄漏加上过滤器渗透）的SWPF，同时受试者进行六次模拟工作场所运动。对每个受试者/呼吸器模型组合进行六次测试，在测试之间重新戴上。呼吸器的设计风格（折叠式和杯式）在本研究中对呼吸器的适合性没有显著影响。一个型号的呼吸器尺寸的数量对杯式呼吸器面板上的呼吸器贴合性有显著影响。在18种呼吸器型号中，有16种型号的几何平均适配系数在男性和女性受试者之间没有显著差异。在33种呼吸器型号/呼吸器尺寸组合中的16种中，发现1至6个面部尺寸的子集与SWPF显著相关（p < 0.05）。二次宽度。面宽、面长、鼻突在5 ~ 6个面部维度中出现最多，其多元线性回归系数与0有显著性差异（p < 0.05）。唇长仅在一个子集中发现。使用面长和唇长作为标准来定义当前的半面罩呼吸器适合性测试面板时，可能需要重新考虑修改面板。根据这项研究和以前的研究结果，建议使用脸长和脸宽作为半面罩面罩面罩的测量标准。
A recent study was conducted to compare five fit test methods for screening out poor-fitting N95 filtering-facepiece respirators.Eighteen models of NIOSH-certified,N95filtering facepiece respirators were used to assess the fit test methods by using a simulated workplace protection factor (SWPF) test. The purpose of this companion study was to investigate the effect of subject characteristics (gender and face dimensions) and respirator features on respirator fit. The respirator features studied were design style (folding and cup style) and number of sizes available (one size fits all, two sizes, and three sizes). Thirty-three subjects participated in this study. Each was measured for 12 face dimensions using traditional calipers and tape. From this group, 25 subjects with face size categories I to 10 tested each respirator The SWPF test protocol entailed using the PortaCount Plus to determine a SWPF based on total penetration (face-seal leakage plus filter penetration) while the subject performed six simulated workplace movements. Six tests were conducted for each subject/respirator model combination with redonning between tests. The respirator design style (folding style and cup style) did not have a significant effect on respirator fit in this study. The number of respirator sizes available for a model had significant impact on respirator fit on the panel for cup-style respirators With one and two sizes available. There was no significant difference in the geometric mean fit factor between male and female subjects for 16 of the 18 respirator models. Subsets of one to six face dimensions were found to be significantly correlated with SWPFs (p < 0.05) in 16 of the 33 respirator model/respirator Size combinations. Bigonial breadth. face width, face length, and nose protrusion appeared the most in subsets (five or six) of face dimensions and their multiple linear regression coefficients were significantly different from zero (p < 0.05). Lip length was found in only one subset. The use of face length and lip length as the criteria to define the current half-facepiece respirator fit test panel may need to be reconsidered when revising the panel. Based on the findings from this and previous studies, face length and face width are recommended measurements that should be used for defining the panel for half-facepiece respirators.