Table 1.
Patient characteristics
| Variablesa | Entire cohort (n = 341) |
|---|---|
| Male gender | 192 (56.30) |
| Age, years | 56.30 (42.53–68.30) |
| White race | 198 (58.06) |
| Glasgow Coma Score on admission | 6 (3–7) |
| Category/cause of brain injury | |
| Subarachnoid hemorrhage | 128 (37.54) |
| Intraparenchymal hemorrhage | 80 (23.46) |
| Traumatic brain injury | 70 (20.53) |
| Brain tumor | 23 (6.74) |
| Liver failure | 10 (2.93) |
| Intraventricular hemorrhage | 10 (2.93) |
| Otherb | 9 (2.64) |
| Cerebrovascular accident | 8 (2.35) |
| Subdural hemorrhage | 5 (1.47) |
| ICP monitor type* | |
| Bolt | 76 (22.29) |
| Ventricular | 266 (78.01) |
| Neurovent | 1 (0.29) |
| Invasive ventilation time, days | 3.23 (1.24–8.91) |
| ICU length of stay, days | 11.19 (6.23–17.05) |
| Hospital LOS, days | 16.00 (9.00–24.00) |
| In-hospital mortality | 103 (30.21) |
| Number of recorded ICP measurements (per patient) | 87 (48–120) |
ICP intracranial pressure, LOS length of stay
*
Two patients had both an intraparenchymal hemorrhage and subarachnoid hemorrhage during their admission. An additional two patients were documented as switching between ventricular and bolt monitors during their ICU stay
a
Variables are presented as N (%) or median (IQR) depending on the type
b
Other includes anoxic brain injury post cardiac arrest, chronic small vessel infarct, meningitis, posterior reversible encephalopathy syndrome related to methylprednisolone-induced hypertension, septic thromboemboli, and hydrocephalus