Correlation between intracranial pressure monitoring for severe traumatic brain injury with hospital length of stay and discharge disposition: a retrospective observational cohort study

OBJECTIVES: Intracranial pressure (ICP) monitoring is recommended for severe traumatic brain injuries (TBI) but some data suggests it may not improve outcomes. The objective was to investigate the effect of ICP monitoring among TBI. METHODS: This retrospective observational cohort study (1/1/2015–6/1/2020) included severe TBI patients. Outcomes [discharge destination, length of stay (LOS)] were compared by ICP monitoring and were stratified by GCS (3 vs. 4–8), α < 0.05. RESULTS: Of the123 patients who met inclusion criteria, 47% received ICP monitoring. There were baseline differences in the two groups characteristics, ICP monitored patients were younger (p = 0.02), had a subarachnoid hemorrhage less often (p = 0.04), and a subdural hematoma more often (p = 0.04) than those without ICP monitors. ICP monitored patients had a significantly longer median LOS (12 vs. 3, p < 0.01) than patients without monitoring. There was a trend towards more ICP monitored patients discharged home (40% vs. 23%, p = 0.06). Among patients with GCS = 3, ICP monitored patients had a longer LOS (p < 0.01) with no significant differences in discharge destinations. For those with a GCS of 4–8, ICP monitoring was associated with a longer LOS (p = 0.01), but fewer were discharged to a skilled nursing facility or long-term care (p = 0.01). CONCLUSIONS: For TBI patients, ICP monitoring was associated with an increased LOS, with no significant differences in discharge destinations when compared to those without ICP monitoring. However, among only those with a GCS of 4–8, ICP monitoring was associated with a decreased proportion of patients discharged to a skilled nursing facility or long-term acute care .