What is the purpose of continuous capnography post-cardiac arrest?

The purpose of continuous capnography post-cardiac arrest is to measure exhaled carbon dioxide. This provides crucial information regarding the patient's respiratory status and metabolic function. After a cardiac arrest, effective chest compressions generate blood flow to the lungs, allowing for the exchange of gases. Continuous monitoring of capnography can help assess the effectiveness of ventilation and ensure that adequate circulation is returning to the lungs.

Additionally, levels of exhaled carbon dioxide, often represented as end-tidal CO2 (ETCO2), give insights into perfusion and metabolic status. In a post-arrest scenario, an increasing trend in ETCO2 is associated with improved cardiac output and return of spontaneous circulation (ROSC), while low levels may indicate inadequate resuscitation efforts or ongoing shock. This information is vital for the medical team to make informed decisions about the patient's treatment and response to interventions.