Data collection
TBI
SUBARACHNOID HEMORRHAGE
The clinical variables collected were demographics, previous comorbidities, final diagnosis, the Marshall tomographic score (in the case of TBI), the modified Fisher tomographic score (in case of subarachnoid hemorrhage), neurosurgical interventions (i.e., craniotomies or craniectomies), blood gas analyses before the 10-min session and concomitant administered sedatives.