An oro/nasopharyngeal airway (30, 50, 70, 80) comprises an arcuately shaped tubular member (38, 52, 70, 80) adapted for insertion into a patient's pharynx (12), either through the mouth or nasal passage, to prevent obstruction during the administration of anesthesia. According to a preferred embodiment, an inhalant gas, typically oxygen (O2), is delivered to the airway (30, 50, 70, 80) via a gas line (32, 60, 78, 82) connected to the proximal end (80B) of the tubular member (38, 52, 70, 80), while expired carbon dioxide (CO2) is sampled in the patient's pharynx via a second gas line (34, 62, 79, 84) connected to the tubular member (38, 52, 70, 80) in the vicinity of its distal end (80A). Preferably, the respective inhalant and expired gas lines are positioned within the interior of the tubular member (38, 52, 70, 80) and are integral parts thereof. Also disclosed is a device adapted for use with a conventional oral or nasopharyngeal airway (30, 50, 70, 80) for delivering an inhalant gas to a proximal end (80B) of an mechanical airway and for sampling exhalant gas at a distal end (80A) of said airway (30, 50, 70, 80). IMAGE
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