Traumatic brain injury is an extremely dangerous disease with complex developments at different levels, of which severe traumatic brain injury is the most dangerous. Therefore, the detection, initial emergency treatment and prompt, timely treatment of severe traumatic brain injury are very important in limiting future complications and reducing the mortality rate for patients.

Increased intracranial pressure is a potentially life-threatening condition. For patients with severe traumatic brain injury and intracranial pressure below 20mmHg, the mortality rate is approximately 20%. Intracranial pressure and cerebral perfusion pressure provide important information for physicians in the monitoring and treatment of traumatic brain injury.