In a 14-year-old patient with head trauma showing a GCS of 8 and Cushing response, what is the priority action?

For a 14-year-old patient with head trauma presenting a Glasgow Coma Scale (GCS) of 8 and exhibiting a Cushing response, the priority action is to ensure adequate oxygenation and maintain proper levels of carbon dioxide (etCO₂). The Cushing response signifies increased intracranial pressure (ICP) and can lead to profound neurological compromise. Maintaining a stable level of etCO₂ between 35-40 mmHg is crucial because fluctuations can further exacerbate ICP and potentially lead to herniation.

High-flow oxygen is essential in managing traumatic brain injuries, as hypoxemia can worsen brain injury and increase mortality. Administering high-flow oxygen ensures that the brain receives adequate oxygenation, which is vital for cerebral perfusion. While hyperventilation to a pCO₂ of 30 mmHg can temporarily reduce ICP by causing vasoconstriction, it is not the preferred method for managing this situation and may lead to further complications such as cerebral hypoxia if not closely monitored. Mannitol is an osmotic diuretic used to reduce ICP, but administering it should come after ensuring proper oxygenation. The Trendelenburg position is generally not recommended in head trauma cases, as it does not significantly affect ICP and can potentially