End-tidal carbon dioxide tension is a reliable surrogate of arterial carbon dioxide tension across different oxygen, carbon dioxide and barometric pressures.

Abstract

End-tidal CO2 tension provides an accurate estimation of P aCO2 in healthy awake individuals over an extensive range of CO2 pressures induced by 17 environmental conditions combining different O2, CO2 and barometric pressures https://bit.ly/3YuKPAY.