Which statement best captures the role of capnography during CPR beyond confirming tube placement?

Which statement best captures the role of capnography during CPR beyond confirming tube placement?

• A. Provides ongoing ventilation feedback during CPR
• B. Capnography is only used to confirm tube placement
• C. Monitors blood pressure
• D. Tracks heart rate

Answer: (B)

Capnography during CPR provides ongoing feedback on how effectively CPR is moving blood through the lungs, not just confirming tube placement. End-tidal CO2 reflects pulmonary blood flow and therefore the perfusion generated by chest compressions. When chest compressions are effective, EtCO2 values are higher; if they drop, it signals poor perfusion and prompts you to adjust compression depth, rate, or ventilation. A sudden rise in EtCO2 can indicate return of spontaneous circulation. This real-time feedback helps gauge CPR quality and detect ROSC, making capnography useful throughout CPR, beyond its initial use for tube confirmation. It does not measure blood pressure or heart rate directly.

Capnography during CPR provides ongoing feedback on how effectively CPR is moving blood through the lungs, not just confirming tube placement. End-tidal CO2 reflects pulmonary blood flow and therefore the perfusion generated by chest compressions. When chest compressions are effective, EtCO2 values are higher; if they drop, it signals poor perfusion and prompts you to adjust compression depth, rate, or ventilation. A sudden rise in EtCO2 can indicate return of spontaneous circulation. This real-time feedback helps gauge CPR quality and detect ROSC, making capnography useful throughout CPR, beyond its initial use for tube confirmation. It does not measure blood pressure or heart rate directly.