Comparative study of the effect of N95 facemask and Powered Air-purifying Respirator (2 fans, N95 filter) on cardiovascular parameters of healthy individuals during exercise.

IF 1.8 4区 医学 Q3 ENVIRONMENTAL SCIENCES Industrial Health Pub Date : 2023-04-01 DOI:10.2486/indhealth.2021-0279
Abhijith K Anil, Raihan Mannan, K Shanmugasundaram, Geetanjali Bade, Anjana Talwar, Kishore K Deepak
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引用次数: 1

Abstract

N95 masks filter 95% of the small particles and respiratory droplets (>0.3 µm diameter). Therefore, they are widely used both by general public and health workers during pandemic. When physical activity or exercise is performed wearing N95 mask, it induces hypercapnic environment. The heat burden is also increased leading to discomfort and reduced compliance. This study was done to compare physiological effects and subjective perceptions while wearing N95 mask and powered air-purifying respirator (PAPR) (2 fans, N95 filter) during incremental exercise. ECG, respiratory movement, SpO2, temperature inside the mask were recorded and perception of discomfort was also assessed. Heart rate variability (HRV) values during baseline were within normal limits in both the mask conditions signifying that cardiac autonomic tone is comparable. During incremental exercise, fall in SpO2 was significantly lesser in PAPR as compared to N95 mask at 60-70% and 70-80% of maximum achievable heart rate. The temperatures inside both the mask conditions were significantly higher than ambient temperature. The scores of humid, hot, breath resistance and fatigue were significantly lower in PAPR than N95 mask. In conditions where prolonged use of mask is required with strenuous physical exertion or exercise, PAPR could be preferred over N95 mask.

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N95口罩与电动空气净化呼吸器(2个风扇,N95过滤器)对运动中健康人心血管参数影响的比较研究
N95口罩可过滤95%的小颗粒和呼吸道飞沫(>0.3µm直径)。因此,在大流行期间,它们被公众和卫生工作者广泛使用。佩戴N95口罩进行体力活动或运动时,会诱发高碳酸血症环境。热负担也增加,导致不适和降低依从性。本研究比较了佩戴N95口罩和动力空气净化呼吸器(2个风扇,N95过滤器)进行增量运动时的生理效果和主观感受。记录心电图、呼吸运动、SpO2、口罩内体温,并评估患者的不适感。在两种情况下,心率变异性(HRV)值在基线期间都在正常范围内,这表明心脏自主张力是可比的。在增加运动期间,与N95面罩相比,在最大可达到心率的60-70%和70-80%时,PAPR中SpO2的下降明显小于N95面罩。两种掩模条件下的内部温度都明显高于环境温度。与N95口罩相比,PAPR的湿、热、呼吸阻力和疲劳评分显著降低。在需要长时间使用口罩并进行剧烈体力消耗或运动的情况下,PAPR口罩优于N95口罩。
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来源期刊
Industrial Health
Industrial Health 医学-毒理学
CiteScore
3.40
自引率
5.00%
发文量
64
审稿时长
6-12 weeks
期刊介绍: INDUSTRIAL HEALTH covers all aspects of occupational medicine, ergonomics, industrial hygiene, engineering, safety and policy sciences. The journal helps promote solutions for the control and improvement of working conditions, and for the application of valuable research findings to the actual working environment.
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