THE EFFECTS OF POWERED AIR SUPPLY TO THE RESPIRATORY PROTECTIVE DEVICE ON RESPIRATION PARAMETERS DURING REST AND EXERCISE
THE EFFECTS OF POWERED AIR SUPPLY TO THE RESPIRATORY PROTECTIVE DEVICE ON RESPIRATION PARAMETERS DURING REST AND EXERCISE
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DOI：
10.1378/chest.102.6.1800
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发表时间：
1992-12-01
期刊：
影响因子：
9.6
通讯作者：
EPSTEIN, Y
中科院分区：
文献类型：
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作者：
ARAD, M;HERUTI, R;EPSTEIN, Y
常见的化学战防护口罩由于呼吸阻力增加和死区增加，对佩戴者施加了过大的呼吸负荷。对于患有严重呼吸道疾病的患者来说，过度的呼吸努力可能是无法忍受的。此外，在吸气过程中，口罩内产生的巨大负压可能会导致面罩面部适配有困难的人向内渗漏。本研究的目的是评估鼓风机在静息和适度运动时，以42+/-2 L/分钟的流量(平均+/-SD)，通过面罩过滤器主动驱动空气对呼吸参数的影响。10名健康的受试者，无论男女，都参加了两个实验阶段，分别戴着口罩和不带吹风机。每次训练包括坐着休息6分钟和在跑步机上行走6分钟(3.2英里/小时，等级为10%)。在9名受试者中，主动供气在静息状态下产生正吸气压(5+/-4vs-24+/-9 mm H2O峰值吸气压)，分别在有无鼓风机的情况下，p
The common chemical warfare protective masks impose an excessive respiratory load on the wearer due to elevated breathing resistance and increased dead space. For patients with severe respiratory disease, the excessive respiratory effort may be intolerable. Besides, the substantial negative pressure created within the mask during inspiration may result in an inward leakage in individuals having difficulties with proper facial fitting of the mask. The purpose of the current investigation was to evaluate the effects of a blower, actively driving air, through the mask's filter, at a flow (mean +/- SD) of 42 +/- 2 L/min, on respiratory parameters during rest and moderate exercise. Ten healthy subjects of either sex participated in two experimental sessions, wearing the mask with and without the blower. Each session included 6 min of sitting at rest and 6 min of walking on a treadmill (3.2 mph, and 10 percent grade). In nine of the subjects, the active air supply produced a positive inspiratory pressure at rest (5 +/- 4 vs -24 +/- 9 mm H2O peak inspiratory pressure with and without the blower, respectively, p