COVID-19: Face masks don't cause overexposure to CO2; study shows effect on gas exchange

A new study published in Annals of American Thoracic Society has found that face masks do t cause over exposure  to carbon dioxide. coronavirus pandemic has triggered wearing of face masks all over world to curb spre of disease but w it has been politicized with few individuals falsely claiming that wearing face masks may be putting people’s health at risk. 

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new study is titled as "Effect of Face Masks on Gas Exchange in Healthy Persons and Patients with COPD” with researchers assessing problems with gas exchange. As per study, y ted changes in oxygen level or carbon dioxide levels in healthy individuals as well as veterans with chronic obstructive pulmonary disease or COPD before and while using surgical masks. 

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Importance of wearing masks

According to scientists, people with COPD, "must work harder to brea, which can le to shortness of breath and/or feeling tired." "We show that effects are minimal at most even in people with very severe lung impairment," said study co-author Michael Campos from University of Miami.

Dr. Campos explained: "Dyspnea, feeling of shortness of breath, felt with masks by some is t synymous of alterations in gas exchange. It likely occurs from restriction of air flow with mask in particular when higher ventilation is needed (on exertion)."

findings in study stressed importance of wearing a face mask to prevent COVID-19 infection. If a surgical mask is t available, a cloth mask with at least two layers is recommended by CDC. Patients with lung disease, in particular, should avoid getting infected and should wear a face mask, which, along with handwashing and social distancing, is proven to reduce risk of COVID-19 infection.

study ded Dr Campos saying, "We ackwledge that our observations may be limited by sample size, however, our population offers a clear signal on nil effect of surgical masks on relevant physiological changes in gas exchange under routine circumstances (prolonged rest, brief walking)". "It is important to inform public that discomfort associated with mask use should t le to unsubstantiated safety concerns as this may attenuate application of a practice proven to improve public health." " public should t believe that masks kill," ded Dr. Campos.

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