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Pulmonary and heart rate responses to wearing N95 filtering facepiece respirators.

Abstract：

BACKGROUND:Filtering facepiece respirators are the most common respirator worn by US health care and industrial workers, yet little is known on the physiologic impact of wearing this protective equipment. METHODS:Twenty young, healthy subjects exercised on a treadmill at a low-moderate (5.6 km/h) work rate while wearing 4 different models of N95 filtering facepiece respirators for 1 hour each, 2 models of which were equipped with exhalation valves, while being monitored for physiologic variables. RESULTS:Compared with controls, respirator use was associated with mean 1 hour increases in heart rate (range, 5.7-10.6 beats per minute, P < .001), respiratory rate (range, 1.4-2.4 breaths per minute, P < .05), and transcutaneous carbon dioxide (range, 1.7-3.0 mm Hg, P < .001). No significant differences in oxygen saturation between controls and respirators were noted (P > .05). CONCLUSION:The pulmonary and heart rate responses to wearing a filtering facepiece respirator for 1 hour at a low-moderate work rate are relatively small and should generally be well tolerated by healthy persons.

journal_name

Am J Infect Control

journal_title

American journal of infection control

authors

Kim JH,Benson SM,Roberge RJ

doi

10.1016/j.ajic.2012.02.037

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

24-7

issue

1

eissn

0196-6553

issn

1527-3296

pii

S0196-6553(12)00717-1

journal_volume

41

pub_type

杂志文章

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