Abstract: A method of method of high flow oxygen therapy (HFOT) and carbon dioxide (CO2) monitoring includes delivering high flow oxygen therapy (HFOT) via a central lumen of a nasal cannula, the nasal cannula comprising a proximal end, a distal end positioned within a pharynx region of a patient's airway, and the central lumen and a sampling lumen formed within a wall of the nasal cannula. The method also includes receiving sampled exhaled breath of the patient via the sampling lumen at a CO2 monitor, wherein the sampling lumen is configured to sample the exhaled breath at the pharynx region through the CO2-permeable membrane and direct the sampled exhaled breath to a CO2 monitor fluidly coupled to the sampling lumen and determining a level of CO2 in the exhaled breath using the CO2 monitor.

Abstract: A position monitoring system is provided that includes a tracheal tube having a distal portion with a radiopaque indicator. The tracheal tube is configured to be positioned within an airway of a patient. The position monitoring system also includes an external sensor configured to be positioned on an external surface of the patient. The external sensor includes an emitter configured to transmit energy into the patient and toward the distal portion and a detector configured to receive a reflected portion of the energy to permit identification of a position of the distal portion. The position monitoring system, in certain embodiments, further includes a video laryngoscope communicatively coupled to the external sensor. The video laryngoscope includes a display and a processor, and the processor is configured to instruct the display to present an indication of the position of the distal portion based on feedback from the detector.

Abstract: A method of method of high flow oxygen therapy (HFOT) and carbon dioxide (CO2) monitoring includes delivering high flow oxygen therapy (HFOT) via a central lumen of a nasal cannula, the nasal cannula comprising a proximal end, a distal end positioned within a pharynx region of a patient's airway, and the central lumen and a sampling lumen formed within a wall of the nasal cannula. The method also includes receiving sampled exhaled breath of the patient via the sampling lumen at a CO2 monitor, wherein the sampling lumen is configured to sample the exhaled breath at the pharynx region through the CO2-permeable membrane and direct the sampled exhaled breath to a CO2 monitor fluidly coupled to the sampling lumen and determining a level of CO2 in the exhaled breath using the CO2 monitor.

Abstract: A connector for an airway tube for delivery of airway gases to a patient includes a male connector having an interior passage. In an embodiment, the connector includes a spigot having a tapered section at a distal end. The connector may include a locking nut encircling the tapered section and having a plurality of interior threads facing an exterior surface of the tapered section.