This document provides methods and materials for treating hypocapnia. For example, methods and materials for delivering CO.sub.2 to a mammal to treat hypocapnia or compensate for a reduced level of CO.sub.2 are provided.

High flow therapy is used to treat Cheyne-Stokes respiration and other types of periodic respiration disorders by periodic application of high flow therapy, adjustment of high flow therapy flow rates and/or periodic additions of CO2 or O2 into the air flow provided to the patient.

Provided are methods and devices useful for treating a respiratory disease or disorder involving the central or upper airways. The methods and devices deliver to central or upper airways of a subject a vapor or aerosol comprising an effective amount of an active ingredient selected from the group consisting of menthol, menthone, neomenthol, isomenthol, and menthofuran. The methods are useful for treating conditions including cough, asthma, bronchitis, and allergic rhinitis.

Systems and methods are provided for detecting and sequestering waste anesthetic gases released by an anesthetic vaporizer. In one embodiment, a method for an anesthetic vaporizer installed in an anesthesia machine includes detecting an emission of waste anesthetic gases (WAGs) from the anesthetic vaporizer, and responsive to detecting the emission of WAGs, performing at least one of scavenging the WAGs and outputting an alert.

Disclosed is an apparatus for providing controlled flow of inhalation-air from at least an air-reservoir to a mask. The apparatus includes a control unit and a switch unit. The control unit controls the level of the inhalation-air flowing from the air-reservoir to the mask. The control unit includes a housing to receive the inhalation-air from the air-reservoir, plurality of ducts protruding from the housing to connect with the air-reservoir and with the mask and a valve configured to control the flow of inhalation-air from the plurality of ducts. The switch unit positions a valve to selectively open and close the plurality of ducts for regulating the flow of inhalation-air from the air-reservoir to the housing.

A device including a first flow channel, a second flow channel and a body part including an inner volume. A first space of the inner volume is adapted to be filled with liquid and a second space of the inner volume is arranged to receive steam. The device further includes means for conveying a gas flow from the steam space of the inner volume via the first flow channel to the outside of the device during inhalation and means for conveying the exhaled gas flow from the outside of the device via the second flow channel to the first space of the inner volume. The device further includes means for measuring a flow and a temperature of an airflow, and means for adjusting the flow of the airflow mechanically and/or automatically. The present disclosure further relates to a method and a system.

The present invention discloses a carbon dioxide inhalation treatment device for central sleep apnea comprising a blower, a gas cylinder filled with carbon dioxide (CO.sub.2), an airbag, a mask, and a detection mechanism for detecting the central apnea by measuring the electromyographic activity of the chest wall muscles. The mask is provided with multiple holes providing a communication between the inside and outside of the mask in order to prevent any sense of resistance of breathing and to provide greater control of inspired CO.sub.2. Inspired CO.sub.2 from a gas mixture containing also a minimum 20% O.sub.2 is driven by air using a blower into a mixing chamber. This carbon dioxide inhalation treatment device for central sleep apnea can provide a stable, mild level of carbon dioxide for patients with central sleep apnea, thus by preserving respiratory drive correcting central sleep apnea without increasing the arousal and microarousal frequency.

A method of delivering a substance, such as one or more of a triptan, a nasal steroid or carbon dioxide gas, to the nasal cavity of a subject, in particular for the treatment of headaches, for example, migraine, or rhinosinusitis, for example, chronic rhinosinusitis, optionally with polyps, the method comprising the steps of fitting a nosepiece to one nostril of the subject, delivering the substance through the nosepiece to the posterior region of the nasal cavity of the subject.

The present invention includes a device for hypoxia training comprising: one or more electrochemical cells each comprising: a cathode and an anode separated by a proton exchange membrane, each of the anode and cathode in communication with an input and an output, wherein the input of the cathode is in fluid communication with ambient air, and wherein the input of the anode is in fluid communication with a source of liquid water; a power supply connected to the one or more electrochemical cells; and a mask in fluid communication with the output from the cathode of the one or more electrochemical cells, wherein oxygen is removed from the ambient air during contact with the cathode when hydrogen ions separated from liquid water by a catalyst on the anode convert oxygen in the ambient air into water.

The subject matter of the application is a device for adjustment and/or regulation of the CO.sub.2, carbon dioxide content of the inhaled air. Device based on the invention where a CO.sub.2 vessel 30 is connected to the CO.sub.2 input aperture (22)—a measuring tool (15) determining the CO.sub.2 content of the exhaled air is connected to the exhaled air pipe (11),—the output aperture of the measuring tool (15) is connected to the input aperture of a control unit (50),—the output aperture of the control unit (50) is connected to the valve (28) adjusting the blending rate of blending vessel (20) and so adjusting the CO.sub.2 content of the inhaled air.