ETCO2 is used to estimate what during CPR?

ETCO2 is used to estimate what during CPR?

• A. Determine heart rhythm
• B. Estimate tissue perfusion and the quality of chest compressions
• C. Measure blood glucose
• D. Assess oxygen saturation

Answer: (B)

End-tidal CO2 (ETCO2) during CPR acts as a real-time gauge of tissue perfusion and the effectiveness of chest compressions. The amount of CO2 expelled at the end of each breath reflects how well blood is delivering CO2 to the lungs. When chest compressions generate good forward blood flow, more CO2 reaches the lungs, and ETCO2 rises toward normal levels. If compressions are weak or ineffective, tissue perfusion drops, less CO2 is carried to the lungs, and ETCO2 falls. This makes ETCO2 a practical measure of how well CPR is working and helps signal return of spontaneous circulation, which typically causes a noticeable rise in ETCO2. So ETCO2 is used to estimate tissue perfusion and the quality of chest compressions. It doesn’t determine heart rhythm (that’s ECG), it isn’t a measure of blood glucose, and oxygen saturation is assessed with pulse oximetry—not capnography.

End-tidal CO2 (ETCO2) during CPR acts as a real-time gauge of tissue perfusion and the effectiveness of chest compressions. The amount of CO2 expelled at the end of each breath reflects how well blood is delivering CO2 to the lungs. When chest compressions generate good forward blood flow, more CO2 reaches the lungs, and ETCO2 rises toward normal levels. If compressions are weak or ineffective, tissue perfusion drops, less CO2 is carried to the lungs, and ETCO2 falls. This makes ETCO2 a practical measure of how well CPR is working and helps signal return of spontaneous circulation, which typically causes a noticeable rise in ETCO2. So ETCO2 is used to estimate tissue perfusion and the quality of chest compressions.

It doesn’t determine heart rhythm (that’s ECG), it isn’t a measure of blood glucose, and oxygen saturation is assessed with pulse oximetry—not capnography.