Question: is capnography and etco2 the same thing?
Answer: Waveform capnography represents the amount of carbon dioxide (CO2) in exhaled air, which assesses ventilation. ... This is end-tidal CO2 (ETCO2) which is normally 35-45 mm Hg. The capnograph is the waveform that shows how much CO2 is present at each phase of the respiratory cycle, and it normally has a rectangular shape.