Introduction | 合法醫療器材資訊網

End-tidalcarbondioxide(ETCO2)isthelevelofcarbondioxidethatisreleasedattheendofanexhaledbreath.·Capnographydevicesareconfiguredaseither​ ...

End-tidal carbon dioxide (ETCO2) is the level of carbon dioxide that is released at the end of an exhaled breath. ETCO2 levels reflect the adequacy with which carbon dioxide (CO2) is carried in the blood back to the lungs and exhaled. Available evidence has established that ETCO2 measurement can provide an indication of cardiac output and pulmonary blood flow.2–4 Non-invasive methods for ETCO2 measurement include capnometry and capnography. Capnometry provides a numerical value for ETCO2. In contrast, capnography delivers a more comprehensive measurement that is displayed in both graphical (waveform) and numerical form. For this reason, capnography is currently the most widely recommended method for monitoring ETCO25–8.

Capnography devices are configured as either sidestream or mainstream. In a sidestream configuration, the CO2 sensor is located in the monitoring device, which is a...