Final answer:
The main determinant of end-tidal carbon dioxide (ETCO2) measurement during CPR is the level of carbon dioxide in the blood. ETCO2 measurement during CPR is used to monitor the effectiveness of chest compressions and ventilation.
Step-by-step explanation:
The main determinant of end-tidal carbon dioxide (ETCO2) measurement during CPR is the level of carbon dioxide in the blood.
During CPR, the ETCO2 measurement is used to monitor the effectiveness of chest compressions and ventilation.
A decrease in ETCO2 levels during CPR may indicate inadequate blood flow or poor ventilation, while an increase may indicate improved perfusion and ventilation.