Abstract: A disposable oxygenation apparatus used to apply an oxygen enriched, positive pressure to a patient's airway where a respiratory device is in situ or is to be used, to decrease the incidence of desaturation and with an LMA in situ to assist in maintaining the patient's vocal cords open during recovery after anaesthesia. The apparatus includes a passageway or passageways extending therethrough, an expiratory valve or valves located in or adjacent an outlet for controlling the passage of expired air from said patient during expiration, a primary inspiratory valve located in or adjacent a primary inlet, for controlling oxygen or oxygen rich air flowing through the passageway or passageways from a collapsible reservoir bag, and a secondary inspiratory valve located in or adjacent a secondary inlet for controlling entry of ambient air in from an exterior of the apparatus during inspiration when the collapsible reservoir bad has been substantially emptied.