What ETCO2 level would indicate a potential issue with chest compressions?

In the context of monitoring end-tidal carbon dioxide (ETCO2) levels during cardiopulmonary resuscitation (CPR), an ETCO2 level of less than 10 mmHg is significant. This low level indicates that there is insufficient blood flow to the lungs, which is crucial for effective ventilation and ensures the return of spontaneous circulation during CPR.

When performing chest compressions, the goal is to maintain effective circulation to the heart and vital organs. An ETCO2 reading below 10 mmHg suggests that the compressions are not generating adequate blood flow and thereby may not be effective in maintaining perfusion. This level serves as a crucial indicator for healthcare providers to assess the quality of compressions being delivered. If the ETCO2 remains low, it may prompt a re-evaluation of the compressions' technique or the need for advanced interventions.

Higher ETCO2 levels, such as those approaching 20 mmHg or more, are generally considered a sign of effective compressions and improved circulation. Therefore, monitoring ETCO2 during resuscitation can provide valuable information about the efficacy of the chest compressions and the overall status of the patient’s circulation.