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Measuring CO2 in Exhaled Breath to Help Save Lives

Measuring CO2 in Exhaled Breath to Help Save Lives

Capnography is the measuring and monitoring of the carbon dioxide levels in exhaled breath. In healthy individuals, the difference between the CO2 exhaled and CO2 levels in arterial blood are proportional. Therefore, by monitoring the waveform of CO2 levels on a capnogram (an electronic capnography monitor) over time, medical personnel like anesthesiologists or paramedics can use the information to monitor a patient. Sudden changes in end-tidal CO2 (ETCO2, the level of carbon dioxide released at the end of expiration) may signify changes in a patient’s heart or lung functions. Non-dispersive infra-red (NDIR) CO2 sensors are at the heart of virtually...

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CO2 Sensor ABC Calibration Explained

The ABC - Automatic Background Calibration algorithm allows the CO2 sensor to dynamically shift its CO2 reading by a constant.

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