One way ROSC is confirmed is by increasing concentrations of which parameter?

One way ROSC is confirmed is by increasing concentrations of which parameter?

• A. ETCO2
• B. Oxygen
• C. Blood Glucose
• D. pH

Answer: (A)

End-tidal CO2 is the real-time measure that reflects how well blood is perfusing the lungs during CPR. When the heart starts circulating effectively again, more CO2 from the tissues reaches the lungs, so the amount of CO2 expelled with each breath rises. A sudden, sustained rise in end-tidal CO2 is a strong indicator that spontaneous circulation has returned. Oxygen levels can be manipulated during resuscitation but don’t themselves confirm ROSC, and plasma glucose or blood pH aren’t immediate, reliable signs of restored circulation.

End-tidal CO2 is the real-time measure that reflects how well blood is perfusing the lungs during CPR. When the heart starts circulating effectively again, more CO2 from the tissues reaches the lungs, so the amount of CO2 expelled with each breath rises. A sudden, sustained rise in end-tidal CO2 is a strong indicator that spontaneous circulation has returned. Oxygen levels can be manipulated during resuscitation but don’t themselves confirm ROSC, and plasma glucose or blood pH aren’t immediate, reliable signs of restored circulation.