Volumetric Capnometry, more than end-tidal carbon dioxide

Mia Shokry, Kimiyo Yamasaki

DOI

https://doi.org/10.53097/JMV.10032 

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Shokry M, Yamasaki K. Volumetric capnometry, more than end-tidal carbon dioxide. J Mech Vent 2021; 2(3):112-113.

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Volumetric Capnometry, more than end-tidal carbon dioxide

Abstract

Volumetric capnography: x-axis is time in seconds, y-axis: exhaled CO2 in mmhg. I: Phase 1, II: phase 2, III: phase 3. PaCO2: partial pressure of carbon dioxide in blood, PeCO2: partial pressure of CO2 in exhaled volume.

FeCO2: fractional concentration of carbon dioxide, Valv: alveolar minute ventilation/minute, VDaw: dead space in ml, VDaw/VTE: ratio of dead space to alveolar tidal volume, VeCO2: carbon dioxide production per minute, Vtalv: alveolar tidal volume in mL.

References

1. Kreit JW. Volume capnography in the intensive care unit: physiological principles, measurements, and calculations. Ann Am Thorac Soc 2019; 16(3):291-300.
https://doi.org/10.1513/AnnalsATS.201807-501CME
PMid:306577002.

2. Volumetric capnography. E-book, Hamilton medical @ https://www.hamilton-medical.com/en_US/Solutions/Volumetric-capnography.html. Accessed August 2021.