Does GCS 3 mean brain dead?

A patient with GCS3 shows no eye opening, no verbal response, and no motor response to stimuli, representing the most critical level of unconsciousness, typically seen in patients with severe brain injury, deep coma, or those who are near brain death 1. GCS3 refers to a score of 3 on the Glasgow Coma Scale (GCS), which is used to assess the severity of brain injury 2, 3. A GCS score of 3 indicates a severe brain injury and is associated with a poor prognosis 2. Patients with a GCS score of 3 often have a high mortality rate, with one study reporting a mortality rate of 80.6% 2. However, some patients with a GCS score of 3 can still achieve a good outcome, with one study reporting that 14.5% of patients achieved a good outcome at 6 months 2.