Four methods are routinely used to monitor CO2 in patients. End tidal CO2 (EtCO2) is monitored through the endotracheal tube during general anesthesia. CO2 is also monitored in other healthcare settings transcutaneously (TCO2), via finger stick capillary CO2 (CapCO2), and arterial blood gas (ABG). The purpose of this study is to perform all four measurements simultaneously during general anesthesia to identify which measure provides the most accurate data with the least amount of patient risk.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
47
End tidal CO2 (EtCO2) is monitored through the endotracheal tube during general anesthesia.
Continuous and noninvasive real-time monitoring of transcutaneous CO2.
Capillary CO2 collected by finger stick and run on the i-STAT handheld blood analyzer.
Nationwide Children's Hospital
Columbus, Ohio, United States
Accuracy of CO2 Levels
Looking at the accuracy of CO2 levels assessed via end tidal CO2 (ETCO2), capillary CO2 (Cap-CO2), and transcutaneous CO2 (TCCO2) compared to arterial blood gas (ABG) which is the gold standard.
Time frame: Immediately following induction of anesthesia
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Arterial blood gas collected from the radial artery and run on the i-STAT handheld blood analyzer.