Abstract: Objective To investigate the effects of ICP and cerebral oxygen saturation of severe traumatic brain injury (sTBI) patients on different head position. Methods The clinical data of 40 patients with severe craniocerebral injury admitted to Neurosurgical Intensive Care Unit (NSICU) of The People's Hospital of Inner Mongolia Autonomous Region from April 2019 to August 2021 were selected. Intracranial pressure monitoring and cerebral oxygen saturation monitoring were given to observe the changes of intracranial pressure and cerebral oxygen saturation when the head position was raised 0°, 30° and 60°. Results In our group of 40 patients who completed ICP and rScO₂ monitoring, intracranial pressure and cerebral oxygen saturation changed when the head of the bed was elevated at different degrees, with the highest intracranial pressure and lowest cerebral oxygen saturation when the head was elevated at 0°. When the patient's head was elevated at 30° and 60°, the intracranial pressure decreased significantly and the cerebral oxygen saturation increased significantly. The difference between the three groups was statistically significant（P<0.05）. Conclusion The application of ICP combined with rScO₂ monitoring in patients with severe traumatic brain injury can detect the changes of intracranial pressure and brain oxygen saturation in time, and head position elevation can reduce intracranial pressure and improve brain oxygen saturation.

Key words: severe traumatic brain injury, intracranial pressure, regional cerebral oxygen saturation, monitoring, head position