After achieving ROSC, what is the reason for maintaining an SpO2 between 94-99% in the patient?

Maintaining an SpO2 between 94-99% after achieving return of spontaneous circulation (ROSC) is crucial for minimizing the production of free radicals. When oxygen levels in the blood are too high or too low, cellular metabolism can become dysfunctional, leading to oxidative stress and the generation of free radicals. These free radicals can damage cells, tissues, and organs, further complicating a patient's recovery and potentially leading to worse outcomes after cardiac arrest.

By ensuring that oxygen saturation falls within the specified range, you not only promote optimal oxygen delivery to vital organs but also help mitigate the risk of oxidative injury. This management is essential because after ROSC, the body is often in a state of vulnerability, and protecting it from further cellular damage can significantly impact the patient's prognosis and recovery trajectory.