An oropharyngeal device positionable within an airway of a patient may include a hollow body having a proximal end positionable adjacent the patient's mouth and an opposite distal end positionable adjacent and spaced from the patient's epiglottis. The body includes a center channel extending from the proximal end to the distal end of the body. The oropharyngeal device may include a supply passage for delivering oxygen to the patient. The supply passage may include at least one of a discharge port fluidly connecting the supply passage to an exterior region of the oropharyngeal device and a discharge port fluidly connecting the supply passage to the center channel. The discharge ports may be positioned along a wall of the body between the distal and proximal ends. The oropharyngeal device may include a sensing passage for sampling a patient's respiratory composition positioned adjacent the distal end of the body.
