What do masks mask? A study on transdermal CO2 monitoring

K Iitani, J Tyson, S Rao, SS Ramamurthy, X Ge… - Medical Engineering & …, 2021 - Elsevier
Medical professionals have complained of extreme discomfort and fatigue from continuous
wearing of N95 respirators (N95) overlaid with surgical masks (SM) and face shields (FS)
during COVID-19 pandemic. However, there are no reports on the effect of face coverings on
transdermal CO 2 (TrCO 2) levels (a measure of blood CO 2) during moderate activity. In this
study, real-time monitoring of TrCO 2, heart rate and skin surface temperature was
conducted for six subjects aged 20–59 years with and without wearing personal protective …
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