What does the term "return of spontaneous circulation" (ROSC) signify?

The term "return of spontaneous circulation" (ROSC) signifies that the patient has regained a pulse and effective blood circulation after experiencing a cardiac arrest. This is a crucial milestone during resuscitation efforts, as it indicates that the heart has resumed its ability to pump blood effectively on its own. Achieving ROSC is a primary objective during advanced cardiac life support (ACLS) because it can lead to the restoration of organ perfusion and the potential for recovery.

While regaining consciousness, having a normal heart rate, or normalizing respiratory function are important indicators of a patient’s overall recovery, they are not the specific definitions of ROSC. ROSC focuses strictly on the restoration of effective cardiac function and blood flow, which is essential for sustaining life until further medical care can be administered.