End-Tidal PCO2: A Clinical Noninvasive Cardiac Output Monitor
End-tidal PCO2(PETCO2) has been used to monitor the adequacy of ventilation for many years. In the past, the value of PETCO2 was displayed on the monitor screen often without a wave form or a trend display. Recently, technological progress has provided us with the opportunity to observe the changes of PETCO2 along with the changes of other hemodynamic parameters. We have observed the PETCO2 changes along with the changes of hemodynamic parameters, and we hypothesize that PETCO2 reflect the changes of cardiac output (CO), when ventilation is kept constant.
KeywordsCardiac Output Dead Space Technological Progress Hemodynamic Parameter Minute Period
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