Hypersomnia following traumatic brain injury

Area of Science:

• Neuroscience
• Trauma Care
• Sleep Medicine

Background:

• Sleepiness is a frequent and persistent issue following traumatic brain injury (TBI).
• Understanding the prevalence and natural history of post-TBI sleepiness is crucial for patient management.
• The impact of injury severity on sleepiness requires further investigation.

Purpose of the Study:

• To determine the prevalence of sleepiness in individuals who have sustained a traumatic brain injury (TBI).
• To track the natural history of sleepiness over one year following TBI.
• To compare sleepiness levels between TBI patients, non-cranial trauma controls, and trauma-free controls.

Main Methods:

• A prospective cohort study involving 514 TBI subjects, 132 non-cranial trauma controls, and 102 trauma-free controls.
• Sleepiness was assessed using the Sickness Impact Profile at one month and one year post-injury.
• Traumatic brain injury (TBI) severity was categorized based on time to follow commands (TFC).

Main Results:

• Fifty-five percent of TBI subjects reported sleepiness at one month, compared to 41% of non-cranial trauma controls and 3% of trauma-free controls.
• At one year, 27% of TBI subjects and 23% of non-cranial trauma controls still experienced sleepiness.
• More severe TBI, indicated by longer TFC, correlated with higher initial sleepiness, though significant improvement was observed in most TBI groups.

Conclusions:

• Sleepiness is a prevalent outcome of traumatic injuries, particularly TBI, with severity correlating to initial sleepiness.
• While many TBI patients experience improvement in sleepiness, a notable proportion, along with non-TBI trauma survivors, remain affected one year post-injury.
• These findings highlight the need for continued monitoring and management of sleep disturbances following TBI.