Waveform Capnography Compared to Colorimetric Carbon Dioxide Detection During Tracheal Intubation of Critically Ill Adults

Inclusion Criteria: 1. Patient is located in a participating unit (ED or ICU) 2. Patient is undergoing tracheal intubation. 3. The clinician intends to use an exhaled CO2 detection device to confirm tracheal placement of the tube. Exclusion Criteria: 1. Patient is known to be a prisoner 2. Patient is known to be \< 18 years old 3. A responsible clinician has determined that sole use of either waveform capnography or colorimetric testing is required for optimal care of the patient.