SYSTEMS AND METHODS FOR MONITORING RESPIRATORY GASES

A device configured for monitoring a concentration of at least one volatile breathing compound. The device can include a gas interface having a mouthpiece to blow into. A connector can couple the interface to a conduit connected to a flow meter and a valve. The flow meter can measure a predefined first flux level of a patient respiratory gas flux. The gas conduit can also connect to an inlet into an intermediate gas storage. The intermediate gas storage can let patient respiratory gas exhaust in response to the flow meter sensing an expiration of the patient respiratory gas flux. A pump can draw the patient respiratory gas with a predefined second flux level in a reverse direction out of a sampling gas outlet and into a gas sampling line where exhaled concentrations of volatile breathing compound are by a detector.