Table 1. Baseline characteristics of the patient cohort.

Characteristic	N (%) or median (IQR)
Total number	64
Male sex	49 (76.6%)
Age (years)	53 (37–64)
Height (cm)	175 (165–180)
Weight (kg)	78 (67–87)
Pathology
Traumatic brain injury	45 (70.3%)
Aneurysmal subarachnoid haemorrhage	15 (23.4%)
Intracranial haemorrhage	4 (6.3%)
Comorbidities
Hypertension	7 (10.9%)
Depression	12 (18.7%)
Asthma	6 (9.4%)
Alcohol abuse	23 (35.9%)
Smokers	21 (32.8%)
Previous myocardial infarction	1 (3.1%)
GCS at admission	7 (3–14)
GOS at discharge	3 (1–5)
Complications
Chest infection	12 (18.7%)
Sepsis	2 (3.1%)
Ventriculitis	1 (1.5%)
Post-traumatic ARDS	2 (3.1%)

ARDS, acute respiratory distress syndrome; GCS, Glasgow Coma Scale; GOS, Glasgow Outcome Scale; IQR, interquartile range.