非動力密閉淨氣式濾毒罐面罩與N95口罩在長時間使用後或溼熱環境下之生理負荷與主觀不適及其對配戴行為之影響評估

CMUR > College of Public Health > Department and Graduate of Occupational Safety and Health > Research reports > Item 310903500/11125

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Title:	非動力密閉淨氣式濾毒罐面罩與N95口罩在長時間使用後或溼熱環境下之生理負荷與主觀不適及其對配戴行為之影響評估
Authors:	許文信(Wen-Hsin Hsu)
Contributors:	公共衛生學院職業安全與衛生學系
Keywords:	呼吸防護具;呼吸阻力;呼吸生理;主觀不適;熱負荷;N95 口罩;Respirators;Breathing resistance;Respiratory physiology;Thermo stress;N95facemask
Date:	2009-07-31
Issue Date:	2009-09-01 15:03:06 (UTC+8)
Abstract:	本研究所針對之呼吸防護具係以一般工業最常用之濾毒罐式面罩與N95 口罩為主，此兩種面罩均屬非動力(non-powered)密閉淨氣式呼吸防護具，N95 口罩其面罩罩體本身即為淨氣單元，除了防塵之外，也可以作為醫護人員防護感染時使用。研究指出在被評估為需使用呼吸防護具之場所，僅有約20%至30%有提供呼吸防護具且被使用，造成使用者不願配戴呼吸防護具之原因可分為三大類，包括配戴時因為呼吸阻力、無效腔及防護具本身重量所增加之生理負荷、與使用者本身相關之心理因子（包含主觀不適）及因環境與防護具本身之所造成之熱負荷。有關配戴密閉淨氣式濾毒罐面罩所造成之生理負荷研究資料較多，但N95 口罩相關研究則相當缺乏，雖然其呼吸阻力較濾毒罐式防護具為低，但是在較長時間使用後，罩體本身會變得相當潮濕，呼吸阻力也會增加，值得加以評估。有關配戴呼吸防護具時之主觀不適缺乏系統性之研究，但相關研究均指出配戴呼吸防護具時之主觀不適對使用者之配戴行為具有關鍵性影響。台灣為一較濕熱之國家，因此在配戴防護具時其負荷會增加，尤其在無空調之工作場所中，因此在濕熱工作環境下之呼吸防護具使用之生理負荷與主觀不適是非常值得加以研究的。因此本研究以「非動力密閉淨氣式濾毒罐面罩與N95 口罩在長時間使用後或濕熱環境下之生理負荷與主觀不適及其對配戴行為之影響評估」為研究主軸，重點在於瞭解此一般職業上常用之兩種呼吸防護具在實際使用條件下之生理負荷情形與使用者感受到之主觀不適情況，藉以鑑認與評估主要影響使用者配戴意願與行為之因子來促進這些呼吸防護具正確使用。 This study aim to evaluate the most frequently used non-powered tight-fitting air-purifying respirators with canister and N95 facemasks. The N95 facemask which the facepiece itself is the purifying element is also used by medical personnel. Research results have indicated the respirators are available and in use in only 20-30% of the work phases evaluated as needing them. Failure to use a respirator is influenced by the physiological burden caused by such as additional respiratory resistance and dead space, by psychological factors such as subjective discomforts, and by thermo stress caused by the environment and respirator itself. There were lots of researches addressing the physiological effects of wearing respirators with canister. Only little research focused on N95 facemask which is associated with smaller breathing resistance when compared with respirator with canister. However, the N95 facemask is still need to be assessed because it may become wet and the breathing resistance may increase after prolonged use. The subjective discomfort associated with respirator wearing has not been studied systematically, but it is widely agreed that wearer discomfort represents a crucial issue to interfere with the use of respirators. The climate of Taiwan is humid and hot in some seasons. Working with respirators under non-temperate environments may induce additional work stress and should be investigated. Therefore the present study intend to assess the physiological loads and subjective discomforts and their effects on the wearing behaviour for non-powered tight-fitting air-purifying respirator with canister and N95 facemask under prolonged use and thermo condition. The identified factors will facilitate the appropriate use of these two types of respirators.
Appears in Collections:	[Department and Graduate of Occupational Safety and Health] Research reports

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