Capnography is the monitoring of the concentration or partial pressure of carbon dioxide (CO2) in respiratory gases. This can help clinicians determine when an NG/NE tube has taken an inadvertent course into the trachea during the insertion process.[1]

References:

Powers, J, Brown, B, Lyman, B, et al. Development of a competency model for placement and verification of nasogastric and nasoenteric feeding tubes for adult hospitalized patients. Nutr. Clin. Pract. 2021; 36: 517-533. https://doi.org/10.1002/ncp.10671

Capnography NG/NE tube insertion-Tuesday Tube Facts