Our previous post introduced you to the normal and abnormal capnogram and the end-tidal carbon dioxide (ETCO2). In this post, we will dive deeper into the ETCO2 and explore how this relates to the clinically significant arterial partial pressure of carbon dioxide (PaCO2). Current guidance encourages using the ETCO2 as a stand-in for the PaCO2. … Continue reading The PaCO2-ETCO2 Gradient