My father had a serious head injury in a car accident and was sent to the county hospital, the doctor said it was inoperable, and now he can only rely on a ventilator to keep his heart beating, his blood pressure is normal, and occasionally...
As a physician in the ICU, I suggest that you do what you can with your treatment.
The ventilator costs almost three thousand a day.
Severe craniocerebral trauma, ventilator maintenance, followed by hypernatremia, pulmonary infection, hyperthermia, etc., will cost progressively more.
If there is spontaneous respiration and early de-ventilatorization, there may be hope.
If not, **very unlikely~~