A carbon dioxide airway adaptor can be attached to an oropharyngeal airway device or an oxygen facemask. The adaptor includes a dome-shaped body, an attachment mechanism at the edge of the body to attach the carbon dioxide airway adaptor to the oropharyngeal airway device or oxygen facemask, a port in the body to provide an airway and access for suctioning, a first docking sleeve in the body to provide oxygen supplementation, and a second docking sleeve in the body to provide end-tidal CO2 monitoring.
